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teensy40: refactor to remove unnecessary code and constants

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ardnew 2020-10-31 21:02:27 -05:00 • коммит произвёл Ron Evans
родитель 47410a4b54
коммит 19a0270303
9 изменённых файлов: 581 добавлений и 831 удалений
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442
src/device/nxp/clock_mimxrt1062.go → src/device/nxp/mimxrt1062_clock.go
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@ -11,75 +11,42 @@ import (
"unsafe" "unsafe"
) )
// Clock represents an individual peripheral clock that may be enabled/disabled
// at runtime. Clocks also have a method `Mux` for selecting the clock source
// and a method `Div` for selecting the hardware divisor. Note that many
// peripherals have an independent prescalar configuration applied to the output
// of this divisor.
type ( type (
Clock uint32 Clock uint32
Gate uint8
ClockMode uint8 ClockMode uint8
// PLL configuration for ARM
ClockConfigArmPll struct {
LoopDivider uint32 // PLL loop divider. Valid range for divider value: 54-108. Fout=Fin*LoopDivider/2.
Src uint8 // Pll clock source, reference _clock_pll_clk_src
}
// PLL configuration for System
ClockConfigSysPll struct {
LoopDivider uint8 // PLL loop divider. Intended to be 1 (528M): 0 - Fout=Fref*20, 1 - Fout=Fref*22
Numerator uint32 // 30 bit Numerator of fractional loop divider.
Denominator uint32 // 30 bit Denominator of fractional loop divider
Src uint8 // Pll clock source, reference _clock_pll_clk_src
SsStop uint16 // Stop value to get frequency change.
SsEnable uint8 // Enable spread spectrum modulation
SsStep uint16 // Step value to get frequency change step.
}
// PLL configuration for USB
ClockConfigUsbPll struct {
Instance uint8 // USB PLL number (1 or 2)
LoopDivider uint8 // PLL loop divider: 0 - Fout=Fref*20, 1 - Fout=Fref*22
Src uint8 // Pll clock source, reference _clock_pll_clk_src
}
// PLL configuration for AUDIO
ClockConfigAudioPll struct {
LoopDivider uint8 // PLL loop divider. Valid range for DIV_SELECT divider value: 27~54.
PostDivider uint8 // Divider after the PLL, should only be 1, 2, 4, 8, 16.
Numerator uint32 // 30 bit Numerator of fractional loop divider.
Denominator uint32 // 30 bit Denominator of fractional loop divider
Src uint8 // Pll clock source, reference _clock_pll_clk_src
}
// PLL configuration for VIDEO
ClockConfigVideoPll struct {
LoopDivider uint8 // PLL loop divider. Valid range for DIV_SELECT divider value: 27~54.
PostDivider uint8 // Divider after the PLL, should only be 1, 2, 4, 8, 16.
Numerator uint32 // 30 bit Numerator of fractional loop divider.
Denominator uint32 // 30 bit Denominator of fractional loop divider
Src uint8 // Pll clock source, reference _clock_pll_clk_src
}
// PLL configuration for ENET
ClockConfigEnetPll struct {
EnableClkOutput bool // Power on and enable PLL clock output for ENET0.
EnableClkOutput25M bool // Power on and enable PLL clock output for ENET2.
LoopDivider uint8 // Controls the frequency of the ENET0 reference clock: b00=25MHz, b01=50MHz, b10=100MHz (not 50% duty cycle), b11=125MHz
Src uint8 // Pll clock source, reference _clock_pll_clk_src
EnableClkOutput1 bool // Power on and enable PLL clock output for ENET1.
LoopDivider1 uint8 // Controls the frequency of the ENET1 reference clock: b00 25MHz, b01 50MHz, b10 100MHz (not 50% duty cycle), b11 125MHz
}
) )
// Enable activates or deactivates the clock gate of receiver Clock c.
func (c Clock) Enable(enable bool) {
if enable {
c.setGate(clockNeededRunWait)
} else {
c.setGate(clockNotNeeded)
}
}
// Mux selects a clock source for the mux of the receiver Clock c.
func (c Clock) Mux(mux uint32) { c.setCcm(mux) }
// Div configures the prescalar divisor of the receiver Clock c.
func (c Clock) Div(div uint32) { c.setCcm(div) }
const ( const (
ModeClkRun ClockMode = 0 // Remain in run mode ClockModeRun ClockMode = 0 // Remain in run mode
ModeClkWait ClockMode = 1 // Transfer to wait mode ClockModeWait ClockMode = 1 // Transfer to wait mode
ModeClkStop ClockMode = 2 // Transfer to stop mode ClockModeStop ClockMode = 2 // Transfer to stop mode
) )
const ( // Set configures the run mode of the MCU.
GateClkNotNeeded Gate = 0 // Clock is off during all modes func (m ClockMode) Set() {
GateClkNeededRun Gate = 1 // Clock is on in run mode, but off in WAIT and STOP modes CCM.CLPCR.Set((CCM.CLPCR.Get() & ^uint32(CCM_CLPCR_LPM_Msk)) |
GateClkNeededRunWait Gate = 3 // Clock is on during all modes, except STOP mode ((uint32(m) << CCM_CLPCR_LPM_Pos) & CCM_CLPCR_LPM_Msk))
) }
// Named oscillators // Named oscillators
const ( const (
@ -259,6 +226,7 @@ const (
ClockPfd3 Clock = 3 // PLL PFD3 ClockPfd3 Clock = 3 // PLL PFD3
) )
// Named clock muxes of integrated peripherals
const ( const (
MuxIpPll3Sw Clock = (offCCSR & 0xFF) | (CCM_CCSR_PLL3_SW_CLK_SEL_Pos << 8) | (((CCM_CCSR_PLL3_SW_CLK_SEL_Msk >> CCM_CCSR_PLL3_SW_CLK_SEL_Pos) & 0x1FFF) << 13) | (noBusyWait << 26) // pll3_sw_clk mux name MuxIpPll3Sw Clock = (offCCSR & 0xFF) | (CCM_CCSR_PLL3_SW_CLK_SEL_Pos << 8) | (((CCM_CCSR_PLL3_SW_CLK_SEL_Msk >> CCM_CCSR_PLL3_SW_CLK_SEL_Pos) & 0x1FFF) << 13) | (noBusyWait << 26) // pll3_sw_clk mux name
MuxIpPeriph Clock = (offCBCDR & 0xFF) | (CCM_CBCDR_PERIPH_CLK_SEL_Pos << 8) | (((CCM_CBCDR_PERIPH_CLK_SEL_Msk >> CCM_CBCDR_PERIPH_CLK_SEL_Pos) & 0x1FFF) << 13) | (CCM_CDHIPR_PERIPH_CLK_SEL_BUSY_Pos << 26) // periph mux name MuxIpPeriph Clock = (offCBCDR & 0xFF) | (CCM_CBCDR_PERIPH_CLK_SEL_Pos << 8) | (((CCM_CBCDR_PERIPH_CLK_SEL_Msk >> CCM_CBCDR_PERIPH_CLK_SEL_Pos) & 0x1FFF) << 13) | (CCM_CDHIPR_PERIPH_CLK_SEL_BUSY_Pos << 26) // periph mux name
@ -286,6 +254,7 @@ const (
MuxIpCsi Clock = (offCSCDR3 & 0xFF) | (CCM_CSCDR3_CSI_CLK_SEL_Pos << 8) | (((CCM_CSCDR3_CSI_CLK_SEL_Msk >> CCM_CSCDR3_CSI_CLK_SEL_Pos) & 0x1FFF) << 13) | (noBusyWait << 26) // csi mux name MuxIpCsi Clock = (offCSCDR3 & 0xFF) | (CCM_CSCDR3_CSI_CLK_SEL_Pos << 8) | (((CCM_CSCDR3_CSI_CLK_SEL_Msk >> CCM_CSCDR3_CSI_CLK_SEL_Pos) & 0x1FFF) << 13) | (noBusyWait << 26) // csi mux name
) )
// Named hardware clock divisors of integrated peripherals
const ( const (
DivIpArm Clock = (offCACRR & 0xFF) | (CCM_CACRR_ARM_PODF_Pos << 8) | (((CCM_CACRR_ARM_PODF_Msk >> CCM_CACRR_ARM_PODF_Pos) & 0x1FFF) << 13) | (CCM_CDHIPR_ARM_PODF_BUSY_Pos << 26) // core div name DivIpArm Clock = (offCACRR & 0xFF) | (CCM_CACRR_ARM_PODF_Pos << 8) | (((CCM_CACRR_ARM_PODF_Msk >> CCM_CACRR_ARM_PODF_Pos) & 0x1FFF) << 13) | (CCM_CDHIPR_ARM_PODF_BUSY_Pos << 26) // core div name
DivIpPeriphClk2 Clock = (offCBCDR & 0xFF) | (CCM_CBCDR_PERIPH_CLK2_PODF_Pos << 8) | (((CCM_CBCDR_PERIPH_CLK2_PODF_Msk >> CCM_CBCDR_PERIPH_CLK2_PODF_Pos) & 0x1FFF) << 13) | (noBusyWait << 26) // periph clock2 div name DivIpPeriphClk2 Clock = (offCBCDR & 0xFF) | (CCM_CBCDR_PERIPH_CLK2_PODF_Pos << 8) | (((CCM_CBCDR_PERIPH_CLK2_PODF_Msk >> CCM_CBCDR_PERIPH_CLK2_PODF_Pos) & 0x1FFF) << 13) | (noBusyWait << 26) // periph clock2 div name
@ -345,7 +314,7 @@ const (
noBusyWait = 0x20 noBusyWait = 0x20
) )
// analog pll definition // analog PLL definition
const ( const (
pllBypassPos = 16 pllBypassPos = 16
pllBypassClkSrcMsk = 0xC000 pllBypassClkSrcMsk = 0xC000
@ -358,29 +327,14 @@ const (
pllSrcClkPN = 1 // Pll clock source CLK1_P and CLK1_N pllSrcClkPN = 1 // Pll clock source CLK1_P and CLK1_N
) )
// Set configures the run mode of the MCU. const (
func (m ClockMode) Set() { clockNotNeeded uint32 = 0 // Clock is off during all modes
CCM.CLPCR.Set((CCM.CLPCR.Get() & ^uint32(CCM_CLPCR_LPM_Msk)) | clockNeededRun uint32 = 1 // Clock is on in run mode, but off in WAIT and STOP modes
((uint32(m) << CCM_CLPCR_LPM_Pos) & CCM_CLPCR_LPM_Msk)) clockNeededRunWait uint32 = 3 // Clock is on during all modes, except STOP mode
} )
// Enable activates or deactivates the clock gate of receiver Clock clk. // getGate returns the CCM clock gating register for the receiver clk.
func (clk Clock) Enable(enable bool) { func (clk Clock) getGate() *volatile.Register32 {
if enable {
clk.control(GateClkNeededRunWait)
} else {
clk.control(GateClkNotNeeded)
}
}
// Mux selects a clock source for the mux of the receiver Clock clk.
func (clk Clock) Mux(mux uint32) { clk.ccm(mux) }
// Div configures the prescalar divisor of the receiver Clock clk.
func (clk Clock) Div(div uint32) { clk.ccm(div) }
// getCCGR returns the CCM clock gating register for the receiver clk.
func (clk Clock) getCCGR() *volatile.Register32 {
switch clk >> 8 { switch clk >> 8 {
case 0: case 0:
return &CCM.CCGR0 return &CCM.CCGR0
@ -403,14 +357,14 @@ func (clk Clock) getCCGR() *volatile.Register32 {
} }
} }
// control enables or disables the receiver clk using its gating register. // setGate enables or disables the receiver clk using its gating register.
func (clk Clock) control(value Gate) { func (clk Clock) setGate(value uint32) {
reg := clk.getCCGR() reg := clk.getGate()
shift := clk & 0x1F shift := clk & 0x1F
reg.Set((reg.Get() & ^(3 << shift)) | (uint32(value) << shift)) reg.Set((reg.Get() & ^(3 << shift)) | (value << shift))
} }
func (clk Clock) ccm(value uint32) { func (clk Clock) setCcm(value uint32) {
const ccmBase = 0x400fc000 const ccmBase = 0x400fc000
reg := (*volatile.Register32)(unsafe.Pointer(uintptr(ccmBase + (uint32(clk) & 0xFF)))) reg := (*volatile.Register32)(unsafe.Pointer(uintptr(ccmBase + (uint32(clk) & 0xFF))))
msk := ((uint32(clk) >> 13) & 0x1FFF) << ((uint32(clk) >> 8) & 0x1F) msk := ((uint32(clk) >> 13) & 0x1FFF) << ((uint32(clk) >> 8) & 0x1F)
@ -423,260 +377,6 @@ func (clk Clock) ccm(value uint32) {
} }
} }
// GetFreq returns the calculated frequency of the receiver clock clk.
func (clk Clock) GetFreq() uint32 {
switch clk {
case ClockCpu, ClockAhb:
return getAhbFreq()
case ClockSemc:
return getSemcFreq()
case ClockIpg:
return getIpgFreq()
case ClockPer:
return getPerClkFreq()
case ClockOsc:
return getOscFreq()
case ClockRtc:
return getRtcFreq()
case ClockArmPll:
return ClockPllArm.getPllFreq()
case ClockUsb1Pll:
return ClockPllUsb1.getPllFreq()
case ClockUsb1PllPfd0:
return ClockPfd0.getUsb1PfdFreq()
case ClockUsb1PllPfd1:
return ClockPfd1.getUsb1PfdFreq()
case ClockUsb1PllPfd2:
return ClockPfd2.getUsb1PfdFreq()
case ClockUsb1PllPfd3:
return ClockPfd3.getUsb1PfdFreq()
case ClockUsb2Pll:
return ClockPllUsb2.getPllFreq()
case ClockSysPll:
return ClockPllSys.getPllFreq()
case ClockSysPllPfd0:
return ClockPfd0.getSysPfdFreq()
case ClockSysPllPfd1:
return ClockPfd1.getSysPfdFreq()
case ClockSysPllPfd2:
return ClockPfd2.getSysPfdFreq()
case ClockSysPllPfd3:
return ClockPfd3.getSysPfdFreq()
case ClockEnetPll0:
return ClockPllEnet.getPllFreq()
case ClockEnetPll1:
return ClockPllEnet2.getPllFreq()
case ClockEnetPll2:
return ClockPllEnet25M.getPllFreq()
case ClockAudioPll:
return ClockPllAudio.getPllFreq()
case ClockVideoPll:
return ClockPllVideo.getPllFreq()
default:
panic("nxp: invalid clock")
}
}
// getOscFreq returns the XTAL OSC clock frequency
func getOscFreq() uint32 {
return 24000000 // 24 MHz
}
// getRtcFreq returns the RTC clock frequency
func getRtcFreq() uint32 {
return 32768 // 32.768 kHz
}
func ccmCbcmrPeriphClk2Sel(n uint32) uint32 {
return (n << CCM_CBCMR_PERIPH_CLK2_SEL_Pos) & CCM_CBCMR_PERIPH_CLK2_SEL_Msk
}
func ccmCbcmrPrePeriphClkSel(n uint32) uint32 {
return (n << CCM_CBCMR_PRE_PERIPH_CLK_SEL_Pos) & CCM_CBCMR_PRE_PERIPH_CLK_SEL_Msk
}
// getPeriphClkFreq returns the PERIPH clock frequency
func getPeriphClkFreq() uint32 {
freq := uint32(0)
if CCM.CBCDR.HasBits(CCM_CBCDR_PERIPH_CLK_SEL_Msk) {
// Periph_clk2_clk -> Periph_clk
switch CCM.CBCMR.Get() & CCM_CBCMR_PERIPH_CLK2_SEL_Msk {
case ccmCbcmrPeriphClk2Sel(0):
// Pll3_sw_clk -> Periph_clk2_clk -> Periph_clk
freq = ClockPllUsb1.getPllFreq()
case ccmCbcmrPeriphClk2Sel(1):
// Osc_clk -> Periph_clk2_clk -> Periph_clk
freq = getOscFreq()
case ccmCbcmrPeriphClk2Sel(2):
freq = ClockPllSys.getPllFreq()
case ccmCbcmrPeriphClk2Sel(3):
freq = 0
}
freq /= ((CCM.CBCDR.Get() & CCM_CBCDR_PERIPH_CLK2_PODF_Msk) >> CCM_CBCDR_PERIPH_CLK2_PODF_Pos) + 1
} else {
// Pre_Periph_clk -> Periph_clk
switch CCM.CBCMR.Get() & CCM_CBCMR_PRE_PERIPH_CLK_SEL_Msk {
case ccmCbcmrPrePeriphClkSel(0):
// PLL2 -> Pre_Periph_clk -> Periph_clk
freq = ClockPllSys.getPllFreq()
case ccmCbcmrPrePeriphClkSel(1):
// PLL2 PFD2 -> Pre_Periph_clk -> Periph_clk
freq = ClockPfd2.getSysPfdFreq()
case ccmCbcmrPrePeriphClkSel(2):
// PLL2 PFD0 -> Pre_Periph_clk -> Periph_clk
freq = ClockPfd0.getSysPfdFreq()
case ccmCbcmrPrePeriphClkSel(3):
// PLL1 divided(/2) -> Pre_Periph_clk -> Periph_clk
freq = ClockPllArm.getPllFreq() / (((CCM.CACRR.Get() & CCM_CACRR_ARM_PODF_Msk) >> CCM_CACRR_ARM_PODF_Pos) + 1)
}
}
return freq
}
// getAhbFreq returns the AHB clock frequency
func getAhbFreq() uint32 {
return getPeriphClkFreq() / (((CCM.CBCDR.Get() & CCM_CBCDR_AHB_PODF_Msk) >> CCM_CBCDR_AHB_PODF_Pos) + 1)
}
// getSemcFreq returns the SEMC clock frequency
func getSemcFreq() uint32 {
freq := uint32(0)
if CCM.CBCDR.HasBits(CCM_CBCDR_SEMC_CLK_SEL_Msk) {
// SEMC alternative clock -> SEMC Clock
if CCM.CBCDR.HasBits(CCM_CBCDR_SEMC_ALT_CLK_SEL_Msk) {
// PLL3 PFD1 -> SEMC alternative clock -> SEMC Clock
freq = ClockPfd1.getUsb1PfdFreq()
} else {
// PLL2 PFD2 -> SEMC alternative clock -> SEMC Clock
freq = ClockPfd2.getSysPfdFreq()
}
} else {
// Periph_clk -> SEMC Clock
freq = getPeriphClkFreq()
}
freq /= ((CCM.CBCDR.Get() & CCM_CBCDR_SEMC_PODF_Msk) >> CCM_CBCDR_SEMC_PODF_Pos) + 1
return freq
}
// getIpgFreq returns the IPG clock frequency
func getIpgFreq() uint32 {
return getAhbFreq() / (((CCM.CBCDR.Get() & CCM_CBCDR_IPG_PODF_Msk) >> CCM_CBCDR_IPG_PODF_Pos) + 1)
}
// getPerClkFreq returns the PER clock frequency
func getPerClkFreq() uint32 {
freq := uint32(0)
if CCM.CSCMR1.HasBits(CCM_CSCMR1_PERCLK_CLK_SEL_Msk) {
// Osc_clk -> PER Cloc
freq = getOscFreq()
} else {
// Periph_clk -> AHB Clock -> IPG Clock -> PER Clock
freq = getIpgFreq()
}
return freq/((CCM.CSCMR1.Get()&CCM_CSCMR1_PERCLK_PODF_Msk)>>
CCM_CSCMR1_PERCLK_PODF_Pos) + 1
}
// getPllFreq returns the clock frequency of the receiver (PLL) clock clk
func (clk Clock) getPllFreq() uint32 {
enetRefClkFreq := []uint32{
25000000, // 25 MHz
50000000, // 50 MHz
100000000, // 100 MHz
125000000, // 125 MHz
}
// check if PLL is enabled
if !clk.isPllEnabled() {
return 0
}
// get pll reference clock
freq := clk.getBypassFreq()
// check if pll is bypassed
if clk.isPllBypassed() {
return freq
}
switch clk {
case ClockPllArm:
freq *= (CCM_ANALOG.PLL_ARM.Get() & CCM_ANALOG_PLL_ARM_DIV_SELECT_Msk) >> CCM_ANALOG_PLL_ARM_DIV_SELECT_Pos
freq >>= 1
case ClockPllSys:
// PLL output frequency = Fref * (DIV_SELECT + NUM/DENOM).
fFreq := float64(freq) * float64(CCM_ANALOG.PLL_SYS_NUM.Get())
fFreq /= float64(CCM_ANALOG.PLL_SYS_DENOM.Get())
if CCM_ANALOG.PLL_SYS.HasBits(CCM_ANALOG_PLL_SYS_DIV_SELECT_Msk) {
freq *= 22
} else {
freq *= 20
}
freq += uint32(fFreq)
case ClockPllUsb1:
if CCM_ANALOG.PLL_USB1.HasBits(CCM_ANALOG_PLL_USB1_DIV_SELECT_Msk) {
freq *= 22
} else {
freq *= 20
}
case ClockPllEnet:
divSelect := (CCM_ANALOG.PLL_ENET.Get() & CCM_ANALOG_PLL_ENET_DIV_SELECT_Msk) >> CCM_ANALOG_PLL_ENET_DIV_SELECT_Pos
freq = enetRefClkFreq[divSelect]
case ClockPllEnet2:
divSelect := (CCM_ANALOG.PLL_ENET.Get() & CCM_ANALOG_PLL_ENET_ENET2_DIV_SELECT_Msk) >> CCM_ANALOG_PLL_ENET_ENET2_DIV_SELECT_Pos
freq = enetRefClkFreq[divSelect]
case ClockPllEnet25M:
// ref_enetpll1 if fixed at 25MHz.
freq = 25000000
case ClockPllUsb2:
if CCM_ANALOG.PLL_USB2.HasBits(CCM_ANALOG_PLL_USB2_DIV_SELECT_Msk) {
freq *= 22
} else {
freq *= 20
}
default:
freq = 0
}
return freq
}
// getSysPfdFreq returns current system PLL PFD output frequency
func (clk Clock) getSysPfdFreq() uint32 {
freq := ClockPllSys.getPllFreq()
switch clk {
case ClockPfd0:
freq /= (CCM_ANALOG.PFD_528.Get() & CCM_ANALOG_PFD_528_PFD0_FRAC_Msk) >> CCM_ANALOG_PFD_528_PFD0_FRAC_Pos
case ClockPfd1:
freq /= (CCM_ANALOG.PFD_528.Get() & CCM_ANALOG_PFD_528_PFD1_FRAC_Msk) >> CCM_ANALOG_PFD_528_PFD1_FRAC_Pos
case ClockPfd2:
freq /= (CCM_ANALOG.PFD_528.Get() & CCM_ANALOG_PFD_528_PFD2_FRAC_Msk) >> CCM_ANALOG_PFD_528_PFD2_FRAC_Pos
case ClockPfd3:
freq /= (CCM_ANALOG.PFD_528.Get() & CCM_ANALOG_PFD_528_PFD3_FRAC_Msk) >> CCM_ANALOG_PFD_528_PFD3_FRAC_Pos
default:
freq = 0
}
return freq * 18
}
// getUsb1PfdFreq returns current USB1 PLL PFD output frequency
func (clk Clock) getUsb1PfdFreq() uint32 {
freq := ClockPllUsb1.getPllFreq()
switch clk {
case ClockPfd0:
freq /= (CCM_ANALOG.PFD_480.Get() & CCM_ANALOG_PFD_480_PFD0_FRAC_Msk) >> CCM_ANALOG_PFD_480_PFD0_FRAC_Pos
case ClockPfd1:
freq /= (CCM_ANALOG.PFD_480.Get() & CCM_ANALOG_PFD_480_PFD1_FRAC_Msk) >> CCM_ANALOG_PFD_480_PFD1_FRAC_Pos
case ClockPfd2:
freq /= (CCM_ANALOG.PFD_480.Get() & CCM_ANALOG_PFD_480_PFD2_FRAC_Msk) >> CCM_ANALOG_PFD_480_PFD2_FRAC_Pos
case ClockPfd3:
freq /= (CCM_ANALOG.PFD_480.Get() & CCM_ANALOG_PFD_480_PFD3_FRAC_Msk) >> CCM_ANALOG_PFD_480_PFD3_FRAC_Pos
default:
freq = 0
}
return freq * 18
}
func setSysPfd(value ...uint32) { func setSysPfd(value ...uint32) {
for i, val := range value { for i, val := range value {
pfd528 := CCM_ANALOG.PFD_528.Get() & pfd528 := CCM_ANALOG.PFD_528.Get() &
@ -701,40 +401,10 @@ func setUsb1Pfd(value ...uint32) {
} }
} }
func (clk Clock) isPllEnabled() bool { // PLL configuration for ARM
const ccmAnalogBase = 0x400d8000 type ClockConfigArmPll struct {
addr := ccmAnalogBase + ((uint32(clk) >> 16) & 0xFFF) LoopDivider uint32 // PLL loop divider. Valid range for divider value: 54-108. Fout=Fin*LoopDivider/2.
pos := uint32(1 << (uint32(clk) & 0x1F)) Src uint8 // Pll clock source, reference _clock_pll_clk_src
return ((*volatile.Register32)(unsafe.Pointer(uintptr(addr)))).HasBits(pos)
}
func (clk Clock) isPllBypassed() bool {
const ccmAnalogBase = 0x400d8000
addr := ccmAnalogBase + ((uint32(clk) >> 16) & 0xFFF)
pos := uint32(1 << pllBypassPos)
return ((*volatile.Register32)(unsafe.Pointer(uintptr(addr)))).HasBits(pos)
}
func (clk Clock) getBypassFreq() uint32 {
const ccmAnalogBase = 0x400d8000
addr := ccmAnalogBase + ((uint32(clk) >> 16) & 0xFFF)
src := (((*volatile.Register32)(unsafe.Pointer(uintptr(addr)))).Get() &
pllBypassClkSrcMsk) >> pllBypassClkSrcPos
if src == uint32(pllSrc24M) {
return getOscFreq()
}
return 0
}
func (clk Clock) bypass(bypass bool) {
const ccmAnalogBase = 0x400d8000
if bypass {
addr := ccmAnalogBase + ((uint32(clk) >> 16) & 0xFFF) + 4
((*volatile.Register32)(unsafe.Pointer(uintptr(addr)))).Set(1 << pllBypassPos)
} else {
addr := ccmAnalogBase + ((uint32(clk) >> 16) & 0xFFF) + 8
((*volatile.Register32)(unsafe.Pointer(uintptr(addr)))).Set(1 << pllBypassPos)
}
} }
func (cfg ClockConfigArmPll) Configure() { func (cfg ClockConfigArmPll) Configure() {
@ -757,6 +427,17 @@ func (cfg ClockConfigArmPll) Configure() {
CCM_ANALOG.PLL_ARM.ClearBits(CCM_ANALOG_PLL_ARM_BYPASS_Msk) CCM_ANALOG.PLL_ARM.ClearBits(CCM_ANALOG_PLL_ARM_BYPASS_Msk)
} }
// PLL configuration for System
type ClockConfigSysPll struct {
LoopDivider uint8 // PLL loop divider. Intended to be 1 (528M): 0 - Fout=Fref*20, 1 - Fout=Fref*22
Numerator uint32 // 30 bit Numerator of fractional loop divider.
Denominator uint32 // 30 bit Denominator of fractional loop divider
Src uint8 // Pll clock source, reference _clock_pll_clk_src
SsStop uint16 // Stop value to get frequency change.
SsEnable uint8 // Enable spread spectrum modulation
SsStep uint16 // Step value to get frequency change step.
}
func (cfg ClockConfigSysPll) Configure(pfd ...uint32) { func (cfg ClockConfigSysPll) Configure(pfd ...uint32) {
// bypass PLL first // bypass PLL first
@ -790,6 +471,13 @@ func (cfg ClockConfigSysPll) Configure(pfd ...uint32) {
setSysPfd(pfd...) setSysPfd(pfd...)
} }
// PLL configuration for USB
type ClockConfigUsbPll struct {
Instance uint8 // USB PLL number (1 or 2)
LoopDivider uint8 // PLL loop divider: 0 - Fout=Fref*20, 1 - Fout=Fref*22
Src uint8 // Pll clock source, reference _clock_pll_clk_src
}
func (cfg ClockConfigUsbPll) Configure(pfd ...uint32) { func (cfg ClockConfigUsbPll) Configure(pfd ...uint32) {
switch cfg.Instance { switch cfg.Instance {

0
src/device/nxp/hardfault_mimxrt1062.go → src/device/nxp/mimxrt1062_hardfault.go
Просмотреть файл

28
src/device/nxp/mpu_mimxrt1062.go → src/device/nxp/mimxrt1062_mpu.go
Просмотреть файл

@ -34,16 +34,6 @@ type (
Extension uint32 Extension uint32
) )
// MPU Type Register Definitions
const (
MPU_TYPE_IREGION_Pos = 16 // MPU TYPE: IREGION Position
MPU_TYPE_IREGION_Msk = 0xFF << MPU_TYPE_IREGION_Pos // MPU TYPE: IREGION Mask
MPU_TYPE_DREGION_Pos = 8 // MPU TYPE: DREGION Position
MPU_TYPE_DREGION_Msk = 0xFF << MPU_TYPE_DREGION_Pos // MPU TYPE: DREGION Mask
MPU_TYPE_SEPARATE_Pos = 0 // MPU TYPE: SEPARATE Position
MPU_TYPE_SEPARATE_Msk = 1 // MPU TYPE: SEPARATE Mask
)
// MPU Control Register Definitions // MPU Control Register Definitions
const ( const (
MPU_CTRL_PRIVDEFENA_Pos = 2 // MPU CTRL: PRIVDEFENA Position MPU_CTRL_PRIVDEFENA_Pos = 2 // MPU CTRL: PRIVDEFENA Position
@ -54,12 +44,6 @@ const (
MPU_CTRL_ENABLE_Msk = 1 // MPU CTRL: ENABLE Mask MPU_CTRL_ENABLE_Msk = 1 // MPU CTRL: ENABLE Mask
) )
// MPU Region Number Register Definitions
const (
MPU_RNR_REGION_Pos = 0 // MPU RNR: REGION Position
MPU_RNR_REGION_Msk = 0xFF // MPU RNR: REGION Mask
)
// MPU Region Base Address Register Definitions // MPU Region Base Address Register Definitions
const ( const (
MPU_RBAR_ADDR_Pos = 5 // MPU RBAR: ADDR Position MPU_RBAR_ADDR_Pos = 5 // MPU RBAR: ADDR Position
@ -161,11 +145,11 @@ func (mpu *MPU_Type) Enable(enable bool) {
dsb 0xF dsb 0xF
isb 0xF isb 0xF
`, nil) `, nil)
EnableDcache(true) enableDcache(true)
EnableIcache(true) enableIcache(true)
} else { } else {
EnableIcache(false) enableIcache(false)
EnableDcache(false) enableDcache(false)
arm.AsmFull(` arm.AsmFull(`
dmb 0xF dmb 0xF
`, nil) `, nil)
@ -200,7 +184,7 @@ func (mpu *MPU_Type) SetRASR(size RegionSize, access AccessPerms, ext Extension,
MPU_RASR_ENABLE_Msk) MPU_RASR_ENABLE_Msk)
} }
func EnableIcache(enable bool) { func enableIcache(enable bool) {
if enable != SystemControl.CCR.HasBits(SCB_CCR_IC_Msk) { if enable != SystemControl.CCR.HasBits(SCB_CCR_IC_Msk) {
if enable { if enable {
arm.AsmFull(` arm.AsmFull(`
@ -232,7 +216,7 @@ func EnableIcache(enable bool) {
} }
} }
func EnableDcache(enable bool) { func enableDcache(enable bool) {
if enable != SystemControl.CCR.HasBits(SCB_CCR_DC_Msk) { if enable != SystemControl.CCR.HasBits(SCB_CCR_DC_Msk) {
if enable { if enable {
SystemControl.CSSELR.Set(0) SystemControl.CSSELR.Set(0)

143
src/machine/board_teensy40.go
Просмотреть файл

@ -2,11 +2,6 @@
package machine package machine
const (
NUM_DIGITAL_IO_PINS = 40
NUM_ANALOG_IO_PINS = 14
)
// Digital pins // Digital pins
const ( const (
// = Pin // [Pad]: Alt Func 0 Alt Func 1 Alt Func 2 Alt Func 3 Alt Func 4 Alt Func 5 Alt Func 6 Alt Func 7 Alt Func 8 Alt Func 9 // = Pin // [Pad]: Alt Func 0 Alt Func 1 Alt Func 2 Alt Func 3 Alt Func 4 Alt Func 5 Alt Func 6 Alt Func 7 Alt Func 8 Alt Func 9
@ -55,57 +50,53 @@ const (
// Analog pins // Analog pins
const ( const (
// = Pin // Dig | [Pad] {Ch} // = Pin // Dig | [Pad] {ADC1/ADC2}
A0 = PA18 // D14 | [AD_B1_02] {7} A0 = PA18 // D14 | [AD_B1_02] { 7 / 7 }
A1 = PA19 // D15 | [AD_B1_03] {8} A1 = PA19 // D15 | [AD_B1_03] { 8 / 8 }
A2 = PA23 // D16 | [AD_B1_07] {12} A2 = PA23 // D16 | [AD_B1_07] { 12 / 12 }
A3 = PA22 // D17 | [AD_B1_06] {11} A3 = PA22 // D17 | [AD_B1_06] { 11 / 11 }
A4 = PA17 // D18 | [AD_B1_01] {6} A4 = PA17 // D18 | [AD_B1_01] { 6 / 6 }
A5 = PA16 // D19 | [AD_B1_00] {5} A5 = PA16 // D19 | [AD_B1_00] { 5 / 5 }
A6 = PA26 // D20 | [AD_B1_10] {15} A6 = PA26 // D20 | [AD_B1_10] { 15 / 15 }
A7 = PA27 // D21 | [AD_B1_11] {0} A7 = PA27 // D21 | [AD_B1_11] { 0 / 0 }
A8 = PA24 // D22 | [AD_B1_08] {13} A8 = PA24 // D22 | [AD_B1_08] { 13 / 13 }
A9 = PA25 // D23 | [AD_B1_09] {14} A9 = PA25 // D23 | [AD_B1_09] { 14 / 14 }
A10 = PA12 // D24 | [AD_B0_12] {1} A10 = PA12 // D24 | [AD_B0_12] { 1 / - }
A11 = PA13 // D25 | [AD_B0_13] {2} A11 = PA13 // D25 | [AD_B0_13] { 2 / - }
A12 = PA30 // D26 | [AD_B1_14] {128+3} A12 = PA30 // D26 | [AD_B1_14] { - / 3 }
A13 = PA31 // D27 | [AD_B1_15] {128+4} A13 = PA31 // D27 | [AD_B1_15] { - / 4 }
) )
func init() { // Default peripheral pins
initLED()
initUART()
initSPI()
initI2C()
}
// -- LEDs ---------------------------------------------------------------------
const ( const (
NUM_BOARD_LED = 1 LED = D13
LED_BUILTIN = D13 UART_RX_PIN = UART1_RX_PIN // D0
LED = LED_BUILTIN UART_TX_PIN = UART1_TX_PIN // D1
SPI_SDI_PIN = SPI1_SDI_PIN // D12
SPI_SDO_PIN = SPI1_SDO_PIN // D11
SPI_SCK_PIN = SPI1_SCK_PIN // D13
SPI_CS_PIN = SPI1_CS_PIN // D10
I2C_SDA_PIN = I2C1_SDA_PIN // D18/A4
I2C_SCL_PIN = I2C1_SCL_PIN // D19/A5
) )
func initLED() {} // #=====================================================#
// | UART |
// -- UART --------------------------------------------------------------------- // #===========#===========#=============#===============#
// | Interface | Hardware | Clock(Freq) | RX/TX : Alt |
// #===========#===========#=============#=========-=====#
// | UART1 | LPUART6 | OSC(24 MHz) | D0/D1 : 2/2 |
// | UART2 | LPUART4 | OSC(24 MHz) | D7/D8 : 2/2 |
// | UART3 | LPUART2 | OSC(24 MHz) | D15/D14 : 2/2 |
// | UART4 | LPUART3 | OSC(24 MHz) | D16/D17 : 2/2 |
// | UART5 | LPUART8 | OSC(24 MHz) | D21/D20 : 2/2 |
// | UART6 | LPUART1 | OSC(24 MHz) | D25/D24 : 2/2 |
// | UART7 | LPUART7 | OSC(24 MHz) | D28/D29 : 2/2 |
// #===========#===========#=============#=========-=====#
const ( const (
// #===========#===========#=============#===========#=============#
// | Interface | Hardware | Clock(Freq) | RX/TX Pin | RX/TX AltFn |
// #===========#===========#=============#===========#=============#
// | UART1 | LPUART6 | OSC(24 MHz) | D0/D1 | 2/2 |
// | UART2 | LPUART4 | OSC(24 MHz) | D7/D8 | 2/2 |
// | UART3 | LPUART2 | OSC(24 MHz) | D15/D14 | 2/2 |
// | UART4 | LPUART3 | OSC(24 MHz) | D16/D17 | 2/2 |
// | UART5 | LPUART8 | OSC(24 MHz) | D21/D20 | 2/2 |
// | UART6 | LPUART1 | OSC(24 MHz) | D25/D24 | 2/2 |
// | UART7 | LPUART7 | OSC(24 MHz) | D28/D29 | 2/2 |
// #===========#===========#=============#===========#=============#
NUM_UART_INTERFACES = 7
UART1_RX_PIN = D0 UART1_RX_PIN = D0
UART1_TX_PIN = D1 UART1_TX_PIN = D1
@ -126,25 +117,18 @@ const (
UART7_RX_PIN = D28 UART7_RX_PIN = D28
UART7_TX_PIN = D29 UART7_TX_PIN = D29
UART_RX_PIN = UART1_RX_PIN
UART_TX_PIN = UART1_TX_PIN
) )
func initUART() {} // #==================================================================#
// | SPI |
// -- SPI ---------------------------------------------------------------------- // #===========#==========#===============#===========================#
// | Interface | Hardware | Clock(Freq) | SDI/SDO/SCK/CS : Alt |
// #===========#==========#===============#=================-=========#
// | SPI1 | LPSPI4 | PLL2(132 MHz) | D12/D11/D13/D10 : 3/3/3/3 |
// | SPI2 | LPSPI3 | PLL2(132 MHz) | D1/D26/D27/D0 : 7/2/2/7 |
// | SPI3 | LPSPI1 | PLL2(132 MHz) | D34/D35/D37/D36 : 4/4/4/4 |
// #===========#==========#===============#=================-=========#
const ( const (
// #===========#==========#===================#===========================#
// | Interface | Hardware | Clock(Freq) | SDI/SDO/SCK/CS : Alt |
// #===========#==========#===================#=================-=========#
// | SPI1 | LPSPI4 | PLL3PFD1(130 MHz) | D12/D11/D13/D10 : 3/3/3/3 |
// | SPI2 | LPSPI3 | PLL3PFD1(130 MHz) | D1/D26/D27/D0 : 7/2/2/7 |
// | SPI3 | LPSPI1 | PLL3PFD1(130 MHz) | D34/D35/D37/D36 : 4/4/4/4 |
// #===========#==========#===================#=================-=========#
NUM_SPI_INTERFACES = 3
SPI1_SDI_PIN = D12 SPI1_SDI_PIN = D12
SPI1_SDO_PIN = D11 SPI1_SDO_PIN = D11
SPI1_SCK_PIN = D13 SPI1_SCK_PIN = D13
@ -159,19 +143,24 @@ const (
SPI3_SDO_PIN = D35 SPI3_SDO_PIN = D35
SPI3_SCK_PIN = D37 SPI3_SCK_PIN = D37
SPI3_CS_PIN = D36 SPI3_CS_PIN = D36
SPI_SDI_PIN = SPI1_SDI_PIN
SPI_SDO_PIN = SPI1_SDO_PIN
SPI_SCK_PIN = SPI1_SCK_PIN
SPI_CS_PIN = SPI1_CS_PIN
) )
func initSPI() {} // #====================================================#
// | I2C |
// -- I2C ---------------------------------------------------------------------- // #===========#==========#=============#===============#
// | Interface | Hardware | Clock(Freq) | SDA/SCL : Alt |
// #===========#==========#=============#=========-=====#
// | I2C1 | LPI2C1 | OSC(24 MHz) | D18/D19 : 3/3 |
// | I2C2 | LPI2C3 | OSC(24 MHz) | D17/D16 : 1/1 |
// | I2C3 | LPI2C4 | OSC(24 MHz) | D25/D24 : 0/0 |
// #===========#==========#=============#=========-=====#
const ( const (
NUM_I2C_INTERFACES = 3 I2C1_SDA_PIN = D18
) I2C1_SCL_PIN = D19
func initI2C() {} I2C2_SDA_PIN = D17
I2C2_SCL_PIN = D16
I2C3_SDA_PIN = D25
I2C3_SCL_PIN = D24
)

400
src/machine/machine_mimxrt1062.go
Просмотреть файл

@ -15,28 +15,6 @@ func CPUFrequency() uint32 {
type PinMode uint8 type PinMode uint8
// muxSelect is yet another level of indirection required to connect pins in an
// alternate function state to a desired peripheral (since more than one pin can
// provide a given alternate function).
//
// Once a pin is configured with a given alternate function mode, the IOMUXC
// device must then be configured to select which alternate function pin to
// route to the desired peripheral.
//
// The reference manual refers to this functionality as a "Daisy Chain". The
// associated docs are found in the i.MX RT1060 Processor Reference Manual:
// "Chapter 11.3.3 Daisy chain - multi pads driving same module input pin"
type muxSelect struct {
mux uint8 // AF mux selection (NOT a Pin type)
sel *volatile.Register32 // AF selection register
}
// connect configures the IOMUXC controller to route a given pin with alternate
// function to a desired peripheral (see godoc comments on type muxSelect).
func (s muxSelect) connect() {
s.sel.Set(uint32(s.mux))
}
const ( const (
// GPIO // GPIO
PinInput PinMode = iota PinInput PinMode = iota
@ -45,93 +23,25 @@ const (
PinOutput PinOutput
PinOutputOpenDrain PinOutputOpenDrain
PinDisable PinDisable
// ADC
PinInputAnalog
// UART
PinModeUARTTX
PinModeUARTRX
// SPI
PinModeSPISDI
PinModeSPISDO
PinModeSPICLK
PinModeSPICS
// I2C
PinModeI2CSDA
PinModeI2CSCL
) )
// Configure sets the GPIO pad and pin properties, and selects the appropriate
// alternate function, for a given Pin and PinConfig.
func (p Pin) Configure(config PinConfig) {
var (
// padSRE = uint32(0x01 << 0)
padDSE = func(n uint32) uint32 { return (n & 0x07) << 3 }
// padSPD = func(n uint32) uint32 { return (n & 0x03) << 6 }
padODE = uint32(0x01 << 11)
padPKE = uint32(0x01 << 12)
padPUE = uint32(0x01 << 13)
padPUP = func(n uint32) uint32 { return (n & 0x03) << 14 }
padHYS = uint32(0x01 << 16)
)
_, gpio := p.getGPIO() // use fast GPIO for all pins
pad, mux := p.getPad()
// first configure the pad characteristics
switch config.Mode {
case PinInput:
gpio.GDIR.ClearBits(p.getMask())
pad.Set(padDSE(7))
case PinInputPullUp:
gpio.GDIR.ClearBits(p.getMask())
pad.Set(padDSE(7) | padPKE | padPUE | padPUP(3) | padHYS)
case PinInputPullDown:
gpio.GDIR.ClearBits(p.getMask())
pad.Set(padDSE(7) | padPKE | padPUE | padHYS)
case PinOutput:
gpio.GDIR.SetBits(p.getMask())
pad.Set(padDSE(7))
case PinOutputOpenDrain:
gpio.GDIR.SetBits(p.getMask())
pad.Set(padDSE(7) | padODE)
case PinDisable:
gpio.GDIR.ClearBits(p.getMask())
pad.Set(padDSE(7) | padHYS)
}
// then configure the alternate function mux
mux.Set(p.getMuxMode(config))
}
// getMuxMode acts as a callback from the `(Pin).Configure(PinMode)` routine to
// determine the alternate function setting for a given Pin and PinConfig.
// This value is used in the IOMUXC device's SW_MUX_CTL_PAD_GPIO_* registers.
func (p Pin) getMuxMode(config PinConfig) uint32 {
const forcePath = true // TODO: should be input parameter?
switch config.Mode {
// GPIO
case PinInput, PinInputPullUp, PinInputPullDown,
PinOutput, PinOutputOpenDrain, PinDisable:
mode := uint32(0x5) // GPIO is always alternate function 5
if forcePath {
mode |= 0x10 // SION bit
}
return mode
default:
panic("machine: invalid pin mode")
}
}
// Set changes the value of the GPIO pin. The pin must be configured as output.
func (p Pin) Set(value bool) {
_, gpio := p.getGPIO() // use fast GPIO for all pins
if value {
gpio.DR_SET.Set(p.getMask())
} else {
gpio.DR_CLEAR.Set(p.getMask())
}
}
// Get returns the current value of a GPIO pin.
func (p Pin) Get() bool {
_, gpio := p.getGPIO() // use fast GPIO for all pins
return gpio.PSR.HasBits(p.getMask())
}
// From the i.MXRT1062 Processor Reference Manual (Chapter 12 - GPIO): // From the i.MXRT1062 Processor Reference Manual (Chapter 12 - GPIO):
// //
// | High-speed GPIOs exist in this device: // | High-speed GPIOs exist in this device:
@ -149,17 +59,13 @@ func (p Pin) Get() bool {
// We cannot declare 32 pins for all available ports (GPIO1-9) anyway, since Pin // We cannot declare 32 pins for all available ports (GPIO1-9) anyway, since Pin
// is only uint8, and 9*32=288 > 256, so something has to be sacrificed. // is only uint8, and 9*32=288 > 256, so something has to be sacrificed.
const numPorts, pinsPerPort = 4, 32
const ( const (
portA Pin = iota * pinsPerPort // GPIO1(6) portA Pin = iota * 32 // GPIO1(6)
portB // GPIO2(7) portB // GPIO2(7)
portC // GPIO3(8) portC // GPIO3(8)
portD // GPIO4(9) portD // GPIO4(9)
) )
const numPins = numPorts * pinsPerPort
const ( const (
// [Pad]: Alt Func 0 Alt Func 1 Alt Func 2 Alt Func 3 Alt Func 4 Alt Func 5 Alt Func 6 Alt Func 7 Alt Func 8 Alt Func 9 // [Pad]: Alt Func 0 Alt Func 1 Alt Func 2 Alt Func 3 Alt Func 4 Alt Func 5 Alt Func 6 Alt Func 7 Alt Func 8 Alt Func 9
// ---------- --------------- --------------- ------------------- -------------------- -------------------- ----------- -------------------- -------------------- --------------------- ---------------- // ---------- --------------- --------------- ------------------- -------------------- -------------------- ----------- -------------------- -------------------- --------------------- ----------------
@ -296,9 +202,104 @@ const (
PD31 = portD + 31 // [EMC_31]: SEMC_DATA09 FLEXPWM3_PWMA01 LPUART7_TX LPSPI1_PCS1 CSI_DATA22 GPIO4_IO31 ENET2_TDATA01 ~ ~ ~ PD31 = portD + 31 // [EMC_31]: SEMC_DATA09 FLEXPWM3_PWMA01 LPUART7_TX LPSPI1_PCS1 CSI_DATA22 GPIO4_IO31 ENET2_TDATA01 ~ ~ ~
) )
func (p Pin) getPos() uint8 { return uint8(p % pinsPerPort) } func (p Pin) getPos() uint8 { return uint8(p % 32) }
func (p Pin) getMask() uint32 { return uint32(1) << p.getPos() } func (p Pin) getMask() uint32 { return uint32(1) << p.getPos() }
func (p Pin) getPort() Pin { return Pin(p/pinsPerPort) * pinsPerPort } func (p Pin) getPort() Pin { return Pin(p/32) * 32 }
// Configure sets the GPIO pad and pin properties, and selects the appropriate
// alternate function, for a given Pin and PinConfig.
func (p Pin) Configure(config PinConfig) {
var (
sre = uint32(0x01 << 0)
dse = func(n uint32) uint32 { return (n & 0x07) << 3 }
spd = func(n uint32) uint32 { return (n & 0x03) << 6 }
ode = uint32(0x01 << 11)
pke = uint32(0x01 << 12)
pue = uint32(0x01 << 13)
pup = func(n uint32) uint32 { return (n & 0x03) << 14 }
hys = uint32(0x01 << 16)
)
_, gpio := p.getGPIO() // use fast GPIO for all pins
pad, mux := p.getPad()
// first configure the pad characteristics
switch config.Mode {
case PinInput:
gpio.GDIR.ClearBits(p.getMask())
pad.Set(dse(7))
case PinInputPullUp:
gpio.GDIR.ClearBits(p.getMask())
pad.Set(dse(7) | pke | pue | pup(3) | hys)
case PinInputPullDown:
gpio.GDIR.ClearBits(p.getMask())
pad.Set(dse(7) | pke | pue | hys)
case PinOutput:
gpio.GDIR.SetBits(p.getMask())
pad.Set(dse(7))
case PinOutputOpenDrain:
gpio.GDIR.SetBits(p.getMask())
pad.Set(dse(7) | ode)
case PinDisable:
gpio.GDIR.ClearBits(p.getMask())
pad.Set(dse(7) | hys)
case PinInputAnalog:
gpio.GDIR.ClearBits(p.getMask())
pad.Set(dse(7))
case PinModeUARTTX:
pad.Set(sre | dse(3) | spd(3))
case PinModeUARTRX:
pad.Set(dse(7) | pke | pue | pup(3) | hys)
case PinModeSPISDI:
pad.Set(dse(7) | spd(2))
case PinModeSPISDO:
pad.Set(dse(7) | spd(2))
case PinModeSPICLK:
pad.Set(dse(7) | spd(2))
case PinModeSPICS:
pad.Set(dse(7))
case PinModeI2CSDA, PinModeI2CSCL:
pad.Set(ode | sre | dse(4) | spd(1) | pke | pue | pup(3))
}
// then configure the alternate function mux
mux.Set(p.getMuxMode(config))
}
// Get returns the current value of a GPIO pin.
func (p Pin) Get() bool {
_, gpio := p.getGPIO() // use fast GPIO for all pins
return gpio.PSR.HasBits(p.getMask())
}
// Set changes the value of the GPIO pin. The pin must be configured as output.
func (p Pin) Set(value bool) {
_, gpio := p.getGPIO() // use fast GPIO for all pins
if value {
gpio.DR_SET.Set(p.getMask())
} else {
gpio.DR_CLEAR.Set(p.getMask())
}
}
// Toggle switches an output pin from low to high or from high to low.
func (p Pin) Toggle() {
_, gpio := p.getGPIO() // use fast GPIO for all pins
gpio.DR_TOGGLE.Set(p.getMask())
}
// getGPIO returns both the normal (IPG_CLK_ROOT) and high-speed (AHB_CLK_ROOT) // getGPIO returns both the normal (IPG_CLK_ROOT) and high-speed (AHB_CLK_ROOT)
// GPIO peripherals to which a given Pin is connected. // GPIO peripherals to which a given Pin is connected.
@ -589,3 +590,168 @@ func (p Pin) getPad() (pad *volatile.Register32, mux *volatile.Register32) {
} }
panic("machine: invalid pin") panic("machine: invalid pin")
} }
// muxSelect is yet another level of indirection required to connect pins in an
// alternate function state to a desired peripheral (since more than one pin can
// provide a given alternate function).
//
// Once a pin is configured with a given alternate function mode, the IOMUXC
// device must then be configured to select which alternate function pin to
// route to the desired peripheral.
//
// The reference manual refers to this functionality as a "Daisy Chain". The
// associated docs are found in the i.MX RT1060 Processor Reference Manual:
// "Chapter 11.3.3 Daisy chain - multi pads driving same module input pin"
type muxSelect struct {
mux uint8 // AF mux selection (NOT a Pin type)
sel *volatile.Register32 // AF selection register
}
// connect configures the IOMUXC controller to route a given pin with alternate
// function to a desired peripheral (see godoc comments on type muxSelect).
func (s muxSelect) connect() {
s.sel.Set(uint32(s.mux))
}
// getMuxMode acts as a callback from the `(Pin).Configure(PinMode)` routine to
// determine the alternate function setting for a given Pin and PinConfig.
// This value is used in the IOMUXC device's SW_MUX_CTL_PAD_GPIO_* registers.
func (p Pin) getMuxMode(config PinConfig) uint32 {
const forcePath = true // TODO: should be input parameter?
switch config.Mode {
// GPIO
case PinInput, PinInputPullUp, PinInputPullDown,
PinOutput, PinOutputOpenDrain, PinDisable:
mode := uint32(0x5) // GPIO is always alternate function 5
if forcePath {
mode |= 0x10 // SION bit
}
return mode
// ADC
case PinInputAnalog:
mode := uint32(0x5) // use alternate function 5 (GPIO)
if forcePath {
mode |= 0x10 // SION bit
}
return mode
// UART RX/TX
case PinModeUARTRX, PinModeUARTTX:
mode := uint32(0x2) // UART is always alternate function 2 on Teensy 4.0
// TODO: Teensy 4.1 has a UART (LPUART5) with alternate function 1
return mode
// SPI SDI
case PinModeSPISDI:
var mode uint32
switch p {
case PC15: // LPSPI1 SDI on PC15 alternate function 4
mode = uint32(0x4)
case PA2: // LPSPI3 SDI on PA2 alternate function 7
mode = uint32(0x7)
case PB1: // LPSPI4 SDI on PB1 alternate function 3
mode = uint32(0x3)
default:
panic("machine: invalid SPI SDI pin")
}
if forcePath {
mode |= 0x10 // SION bit
}
return mode
// SPI SDO
case PinModeSPISDO:
var mode uint32
switch p {
case PC14: // LPSPI1 SDO on PC14 alternate function 4
mode = uint32(0x4)
case PA30: // LPSPI3 SDO on PA30 alternate function 2
mode = uint32(0x2)
case PB2: // LPSPI4 SDO on PB2 alternate function 3
mode = uint32(0x3)
default:
panic("machine: invalid SPI SDO pin")
}
if forcePath {
mode |= 0x10 // SION bit
}
return mode
// SPI SCK
case PinModeSPICLK:
var mode uint32
switch p {
case PC12: // LPSPI1 SCK on PC12 alternate function 4
mode = uint32(0x4)
case PA31: // LPSPI3 SCK on PA31 alternate function 2
mode = uint32(0x2)
case PB3: // LPSPI4 SCK on PB3 alternate function 3
mode = uint32(0x3)
default:
panic("machine: invalid SPI CLK pin")
}
if forcePath {
mode |= 0x10 // SION bit
}
return mode
// SPI CS
case PinModeSPICS:
var mode uint32
switch p {
case PC13: // LPSPI1 CS on PC13 alternate function 4
mode = uint32(0x4)
case PA3: // LPSPI3 CS on PA3 alternate function 7
mode = uint32(0x7)
case PB0: // LPSPI4 CS on PB0 alternate function 3
mode = uint32(0x3)
default: // use alternate function 5 (GPIO) if non-CS pin selected
mode = uint32(0x5)
}
if forcePath {
mode |= 0x10 // SION bit
}
return mode
// I2C SDA
case PinModeI2CSDA:
var mode uint32
switch p {
case PA13: // LPI2C4 SDA on PA13 alternate function 0
mode = uint32(0)
case PA17: // LPI2C1 SDA on PA17 alternate function 3
mode = uint32(3)
case PA22: // LPI2C3 SDA on PA22 alternate function 1
mode = uint32(1)
default:
panic("machine: invalid I2C SDA pin")
}
if forcePath {
mode |= 0x10 // SION bit
}
return mode
// I2C SCL
case PinModeI2CSCL:
var mode uint32
switch p {
case PA12: // LPI2C4 SCL on PA12 alternate function 0
mode = uint32(0)
case PA16: // LPI2C1 SCL on PA16 alternate function 3
mode = uint32(3)
case PA23: // LPI2C3 SCL on PA23 alternate function 1
mode = uint32(1)
default:
panic("machine: invalid I2C SCL pin")
}
if forcePath {
mode |= 0x10 // SION bit
}
return mode
default:
panic("machine: invalid pin mode")
}
}

320
src/runtime/runtime_mimxrt1062_clock.go
Просмотреть файл

@ -6,66 +6,13 @@ import (
"device/nxp" "device/nxp"
) )
// Core, bus, and peripheral clock frequencies (Hz) // Core clock frequencies (Hz)
const ( const (
CORE_FREQ = 600000000 // 600 MHz CORE_FREQ = 600000000 // 600 MHz
SYSTICK_FREQ = 100000 // 100 kHz (see note below) OSC_FREQ = 24000000 // 24 MHz
_ // -----------
AHB_FREQ = 600000000 // 600 MHz
CAN_FREQ = 40000000 // 40 MHz
CKIL_SYNC_FREQ = 32768 // 32.768 kHz
CSI_FREQ = 12000000 // 12 MHz
FLEXIO1_FREQ = 30000000 // 30 MHz
FLEXIO2_FREQ = 30000000 // 30 MHz
FLEXSPI2_FREQ = 327724137 // 327.7 MHz
FLEXSPI_FREQ = 327724137 // 327.7 MHz
IPG_FREQ = 150000000 // 150 MHz
LCDIF_FREQ = 39272727 // 39.3 MHz
LPI2C_FREQ = 60000000 // 60 MHz
LPSPI_FREQ = 132000000 // 132 MHz
PERCLK_FREQ = 24000000 // 24 MHz
SAI1_FREQ = 63529411 // 63.5 MHz
SAI2_FREQ = 63529411 // 63.5 MHz
SAI3_FREQ = 63529411 // 63.5 MHz
SEMC_FREQ = 163862068 // 163.9 MHz
SPDIF0_FREQ = 30000000 // 30 MHz
TRACE_FREQ = 132000000 // 132 MHz
UART_FREQ = 24000000 // 24 MHz
USDHC1_FREQ = 198000000 // 198 MHz
USDHC2_FREQ = 198000000 // 198 MHz
) )
var ( // Note from Teensyduino (cores/teensy4/startup.c):
ArmPllConfig = nxp.ClockConfigArmPll{
LoopDivider: 100, // PLL loop divider, Fout = Fin * 50
Src: 0, // Bypass clock source, 0 - OSC 24M, 1 - CLK1_P and CLK1_N
}
SysPllConfig = nxp.ClockConfigSysPll{
LoopDivider: 1, // PLL loop divider, Fout = Fin * ( 20 + LoopDivider*2 + Numerator / Denominator )
Numerator: 0, // 30 bit Numerator of fractional loop divider
Denominator: 1, // 30 bit Denominator of fractional loop divider
Src: 0, // Bypass clock source, 0 - OSC 24M, 1 - CLK1_P and CLK1_N
}
Usb1PllConfig = nxp.ClockConfigUsbPll{
Instance: 1, // USB PLL Instance
LoopDivider: 0, // PLL loop divider, Fout = Fin * 20
Src: 0, // Bypass clock source, 0 - OSC 24M, 1 - CLK1_P and CLK1_N
}
Usb2PllConfig = nxp.ClockConfigUsbPll{
Instance: 2, // USB PLL Instance
LoopDivider: 0, // PLL loop divider, Fout = Fin * 20
Src: 0, // Bypass clock source, 0 - OSC 24M, 1 - CLK1_P and CLK1_N
}
VideoPllConfig = nxp.ClockConfigVideoPll{
LoopDivider: 31, // PLL loop divider, Fout = Fin * ( LoopDivider + Numerator / Denominator )
PostDivider: 8, // Divider after PLL
Numerator: 0, // 30 bit Numerator of fractional loop divider, Fout = Fin * ( LoopDivider + Numerator / Denominator )
Denominator: 1, // 30 bit Denominator of fractional loop divider, Fout = Fin * ( LoopDivider + Numerator / Denominator )
Src: 0, // Bypass clock source, 0 - OSC 24M, 1 - CLK1_P and CLK1_N
}
)
// Note about SYSTICK_FREQ from Teensyduino (cores/teensy4/startup.c):
// //
// | ARM SysTick is used for most Ardiuno timing functions, delay(), millis(), // | ARM SysTick is used for most Ardiuno timing functions, delay(), millis(),
// | micros(). SysTick can run from either the ARM core clock, or from an // | micros(). SysTick can run from either the ARM core clock, or from an
@ -75,6 +22,30 @@ var (
// | the external clock is really 100 kHz. We use this clock rather than the // | the external clock is really 100 kHz. We use this clock rather than the
// | ARM clock, to allow SysTick to maintain correct timing even when we change // | ARM clock, to allow SysTick to maintain correct timing even when we change
// | the ARM clock to run at different speeds. // | the ARM clock to run at different speeds.
const SYSTICK_FREQ = 100000 // 100 kHz
var (
ArmPllConfig = nxp.ClockConfigArmPll{
LoopDivider: 100, // PLL loop divider, Fout=Fin*50
Src: 0, // bypass clock source, 0=OSC24M, 1=CLK1_P & CLK1_N
}
SysPllConfig = nxp.ClockConfigSysPll{
LoopDivider: 1, // PLL loop divider, Fout=Fin*(20+LOOP*2+NUMER/DENOM)
Numerator: 0, // 30-bit NUMER of fractional loop divider
Denominator: 1, // 30-bit DENOM of fractional loop divider
Src: 0, // bypass clock source, 0=OSC24M, 1=CLK1_P & CLK1_N
}
Usb1PllConfig = nxp.ClockConfigUsbPll{
Instance: 1, // USB PLL instance
LoopDivider: 0, // PLL loop divider, Fout=Fin*20
Src: 0, // bypass clock source, 0=OSC24M, 1=CLK1_P & CLK1_N
}
Usb2PllConfig = nxp.ClockConfigUsbPll{
Instance: 2, // USB PLL instance
LoopDivider: 0, // PLL loop divider, Fout=Fin*20
Src: 0, // bypass clock source, 0=OSC24M, 1=CLK1_P & CLK1_N
}
)
// initClocks configures the core, buses, and all peripherals' clock source mux // initClocks configures the core, buses, and all peripherals' clock source mux
// and dividers for runtime. The clock gates for individual peripherals are all // and dividers for runtime. The clock gates for individual peripherals are all
@ -85,11 +56,10 @@ func initClocks() {
// disable low-power mode so that __WFI doesn't lock up at runtime. // disable low-power mode so that __WFI doesn't lock up at runtime.
// see: Using the MIMXRT1060/4-EVK with MCUXpresso IDE v10.3.x (v1.0.2, // see: Using the MIMXRT1060/4-EVK with MCUXpresso IDE v10.3.x (v1.0.2,
// 2019MAR01), chapter 14 // 2019MAR01), chapter 14
nxp.ModeClkRun.Set() nxp.ClockModeRun.Set()
// enable 1MHz clock output // enable and use 1MHz clock output
nxp.XTALOSC24M.OSC_CONFIG2.SetBits(nxp.XTALOSC24M_OSC_CONFIG2_ENABLE_1M_Msk) nxp.XTALOSC24M.OSC_CONFIG2.SetBits(nxp.XTALOSC24M_OSC_CONFIG2_ENABLE_1M_Msk)
// use free 1MHz clock output
nxp.XTALOSC24M.OSC_CONFIG2.ClearBits(nxp.XTALOSC24M_OSC_CONFIG2_MUX_1M_Msk) nxp.XTALOSC24M.OSC_CONFIG2.ClearBits(nxp.XTALOSC24M_OSC_CONFIG2_MUX_1M_Msk)
// initialize external 24 MHz clock // initialize external 24 MHz clock
@ -101,10 +71,8 @@ func initClocks() {
} }
nxp.CCM_ANALOG.MISC0_CLR.Set(nxp.CCM_ANALOG_MISC0_OSC_XTALOK_EN_Msk) nxp.CCM_ANALOG.MISC0_CLR.Set(nxp.CCM_ANALOG_MISC0_OSC_XTALOK_EN_Msk)
// initialize internal RC oscillator 24 MHz clock // initialize internal RC OSC 24 MHz, and switch clock source to external OSC
nxp.XTALOSC24M.LOWPWR_CTRL.SetBits(nxp.XTALOSC24M_LOWPWR_CTRL_RC_OSC_EN_Msk) nxp.XTALOSC24M.LOWPWR_CTRL.SetBits(nxp.XTALOSC24M_LOWPWR_CTRL_RC_OSC_EN_Msk)
// switch clock source to external oscillator
nxp.XTALOSC24M.LOWPWR_CTRL_CLR.Set(nxp.XTALOSC24M_LOWPWR_CTRL_CLR_OSC_SEL_Msk) nxp.XTALOSC24M.LOWPWR_CTRL_CLR.Set(nxp.XTALOSC24M_LOWPWR_CTRL_CLR_OSC_SEL_Msk)
// set oscillator ready counter value // set oscillator ready counter value
@ -123,142 +91,122 @@ func initClocks() {
for !nxp.DCDC.REG0.HasBits(nxp.DCDC_REG0_STS_DC_OK_Msk) { for !nxp.DCDC.REG0.HasBits(nxp.DCDC_REG0_STS_DC_OK_Msk) {
} }
// -------------------------------------------------------------------- AHB --
nxp.DivIpAhb.Div(0) // divide AHB_PODF (DIV1) nxp.DivIpAhb.Div(0) // divide AHB_PODF (DIV1)
// -------------------------------------------------------------------- ADC -- nxp.ClockIpAdc1.Enable(false) // disable ADC
nxp.ClockIpAdc1.Enable(false) // disable ADC clock gates nxp.ClockIpAdc2.Enable(false) //
nxp.ClockIpAdc2.Enable(false) // ~
// ------------------------------------------------------------------- XBAR -- nxp.ClockIpXbar1.Enable(false) // disable XBAR
nxp.ClockIpXbar1.Enable(false) // disable XBAR clock gates nxp.ClockIpXbar2.Enable(false) //
nxp.ClockIpXbar2.Enable(false) // ~ nxp.ClockIpXbar3.Enable(false) //
nxp.ClockIpXbar3.Enable(false) // ~
// ---------------------------------------------------------------- ARM/IPG --
nxp.DivIpIpg.Div(3) // divide IPG_PODF (DIV4) nxp.DivIpIpg.Div(3) // divide IPG_PODF (DIV4)
nxp.DivIpArm.Div(1) // divide ARM_PODF (DIV2) nxp.DivIpArm.Div(1) // divide ARM_PODF (DIV2)
nxp.DivIpPeriphClk2.Div(0) // divide PERIPH_CLK2_PODF (DIV1) nxp.DivIpPeriphClk2.Div(0) // divide PERIPH_CLK2_PODF (DIV1)
// ---------------------------------------------------------------- GPT/PIT -- nxp.ClockIpGpt1.Enable(false) // disable GPT/PIT
nxp.ClockIpGpt1.Enable(false) // disable GPT/PIT clock gates nxp.ClockIpGpt1S.Enable(false) //
nxp.ClockIpGpt1S.Enable(false) // ~ nxp.ClockIpGpt2.Enable(false) //
nxp.ClockIpGpt2.Enable(false) // ~ nxp.ClockIpGpt2S.Enable(false) //
nxp.ClockIpGpt2S.Enable(false) // ~ nxp.ClockIpPit.Enable(false) //
nxp.ClockIpPit.Enable(false) // ~
// -------------------------------------------------------------------- PER --
nxp.DivIpPerclk.Div(0) // divide PERCLK_PODF (DIV1) nxp.DivIpPerclk.Div(0) // divide PERCLK_PODF (DIV1)
// ------------------------------------------------------------------ USDHC -- nxp.ClockIpUsdhc1.Enable(false) // disable USDHC1
nxp.ClockIpUsdhc1.Enable(false) // disable USDHC1 clock gate
nxp.DivIpUsdhc1.Div(1) // divide USDHC1_PODF (DIV2) nxp.DivIpUsdhc1.Div(1) // divide USDHC1_PODF (DIV2)
nxp.MuxIpUsdhc1.Mux(1) // USDHC1 select PLL2_PFD0 nxp.MuxIpUsdhc1.Mux(1) // USDHC1 select PLL2_PFD0
nxp.ClockIpUsdhc2.Enable(false) // disable USDHC2 clock gate nxp.ClockIpUsdhc2.Enable(false) // disable USDHC2
nxp.DivIpUsdhc2.Div(1) // divide USDHC2_PODF (DIV2) nxp.DivIpUsdhc2.Div(1) // divide USDHC2_PODF (DIV2)
nxp.MuxIpUsdhc2.Mux(1) // USDHC2 select PLL2_PFD0 nxp.MuxIpUsdhc2.Mux(1) // USDHC2 select PLL2_PFD0
// ------------------------------------------------------------------- SEMC -- nxp.ClockIpSemc.Enable(false) // disable SEMC
nxp.ClockIpSemc.Enable(false) // disable SEMC clock gate
nxp.DivIpSemc.Div(1) // divide SEMC_PODF (DIV2) nxp.DivIpSemc.Div(1) // divide SEMC_PODF (DIV2)
nxp.MuxIpSemcAlt.Mux(0) // SEMC_ALT select PLL2_PFD2 nxp.MuxIpSemcAlt.Mux(0) // SEMC_ALT select PLL2_PFD2
nxp.MuxIpSemc.Mux(1) // SEMC select SEMC_ALT nxp.MuxIpSemc.Mux(1) // SEMC select SEMC_ALT
// ---------------------------------------------------------------- FLEXSPI --
if false { if false {
// TODO: external flash is on this bus, configured via DCD block // TODO: external flash is on this bus, configured via DCD block
nxp.ClockIpFlexSpi.Enable(false) // disable FLEXSPI clock gate nxp.ClockIpFlexSpi.Enable(false) // disable FLEXSPI
nxp.DivIpFlexSpi.Div(0) // divide FLEXSPI_PODF (DIV1) nxp.DivIpFlexSpi.Div(0) // divide FLEXSPI_PODF (DIV1)
nxp.MuxIpFlexSpi.Mux(2) // FLEXSPI select PLL2_PFD2 nxp.MuxIpFlexSpi.Mux(2) // FLEXSPI select PLL2_PFD2
} }
nxp.ClockIpFlexSpi2.Enable(false) // disable FLEXSPI2 clock gate nxp.ClockIpFlexSpi2.Enable(false) // disable FLEXSPI2
nxp.DivIpFlexSpi2.Div(0) // divide FLEXSPI2_PODF (DIV1) nxp.DivIpFlexSpi2.Div(0) // divide FLEXSPI2_PODF (DIV1)
nxp.MuxIpFlexSpi2.Mux(0) // FLEXSPI2 select PLL2_PFD2 nxp.MuxIpFlexSpi2.Mux(0) // FLEXSPI2 select PLL2_PFD2
// -------------------------------------------------------------------- CSI -- nxp.ClockIpCsi.Enable(false) // disable CSI
nxp.ClockIpCsi.Enable(false) // disable CSI clock gate
nxp.DivIpCsi.Div(1) // divide CSI_PODF (DIV2) nxp.DivIpCsi.Div(1) // divide CSI_PODF (DIV2)
nxp.MuxIpCsi.Mux(0) // CSI select OSC24M nxp.MuxIpCsi.Mux(0) // CSI select OSC24M
// ------------------------------------------------------------------ LPSPI -- nxp.ClockIpLpspi1.Enable(false) // disable LPSPI
nxp.ClockIpLpspi1.Enable(false) // disable LPSPI clock gate nxp.ClockIpLpspi2.Enable(false) //
nxp.ClockIpLpspi2.Enable(false) // ~ nxp.ClockIpLpspi3.Enable(false) //
nxp.ClockIpLpspi3.Enable(false) // ~ nxp.ClockIpLpspi4.Enable(false) //
nxp.ClockIpLpspi4.Enable(false) // ~
nxp.DivIpLpspi.Div(3) // divide LPSPI_PODF (DIV4) nxp.DivIpLpspi.Div(3) // divide LPSPI_PODF (DIV4)
nxp.MuxIpLpspi.Mux(2) // LPSPI select PLL2 nxp.MuxIpLpspi.Mux(2) // LPSPI select PLL2
// ------------------------------------------------------------------ TRACE -- nxp.ClockIpTrace.Enable(false) // disable TRACE
nxp.ClockIpTrace.Enable(false) // disable TRACE clock gate
nxp.DivIpTrace.Div(3) // divide TRACE_PODF (DIV4) nxp.DivIpTrace.Div(3) // divide TRACE_PODF (DIV4)
nxp.MuxIpTrace.Mux(0) // TRACE select PLL2_MAIN nxp.MuxIpTrace.Mux(0) // TRACE select PLL2_MAIN
// -------------------------------------------------------------------- SAI -- nxp.ClockIpSai1.Enable(false) // disable SAI1
nxp.ClockIpSai1.Enable(false) // disable SAI1 clock gate
nxp.DivIpSai1Pre.Div(3) // divide SAI1_CLK_PRED (DIV4) nxp.DivIpSai1Pre.Div(3) // divide SAI1_CLK_PRED (DIV4)
nxp.DivIpSai1.Div(1) // divide SAI1_CLK_PODF (DIV2) nxp.DivIpSai1.Div(1) // divide SAI1_CLK_PODF (DIV2)
nxp.MuxIpSai1.Mux(0) // SAI1 select PLL3_PFD2 nxp.MuxIpSai1.Mux(0) // SAI1 select PLL3_PFD2
nxp.ClockIpSai2.Enable(false) // disable SAI2 clock gate nxp.ClockIpSai2.Enable(false) // disable SAI2
nxp.DivIpSai2Pre.Div(3) // divide SAI2_CLK_PRED (DIV4) nxp.DivIpSai2Pre.Div(3) // divide SAI2_CLK_PRED (DIV4)
nxp.DivIpSai2.Div(1) // divide SAI2_CLK_PODF (DIV2) nxp.DivIpSai2.Div(1) // divide SAI2_CLK_PODF (DIV2)
nxp.MuxIpSai2.Mux(0) // SAI2 select PLL3_PFD2 nxp.MuxIpSai2.Mux(0) // SAI2 select PLL3_PFD2
nxp.ClockIpSai3.Enable(false) // disable SAI3 clock gate nxp.ClockIpSai3.Enable(false) // disable SAI3
nxp.DivIpSai3Pre.Div(3) // divide SAI3_CLK_PRED (DIV4) nxp.DivIpSai3Pre.Div(3) // divide SAI3_CLK_PRED (DIV4)
nxp.DivIpSai3.Div(1) // divide SAI3_CLK_PODF (DIV2) nxp.DivIpSai3.Div(1) // divide SAI3_CLK_PODF (DIV2)
nxp.MuxIpSai3.Mux(0) // SAI3 select PLL3_PFD2 nxp.MuxIpSai3.Mux(0) // SAI3 select PLL3_PFD2
// ------------------------------------------------------------------ LPI2C -- nxp.ClockIpLpi2c1.Enable(false) // disable LPI2C
nxp.ClockIpLpi2c1.Enable(false) // disable LPI2C clock gate nxp.ClockIpLpi2c2.Enable(false) //
nxp.ClockIpLpi2c2.Enable(false) // ~ nxp.ClockIpLpi2c3.Enable(false) //
nxp.ClockIpLpi2c3.Enable(false) // ~
nxp.DivIpLpi2c.Div(0) // divide LPI2C_CLK_PODF (DIV1) nxp.DivIpLpi2c.Div(0) // divide LPI2C_CLK_PODF (DIV1)
nxp.MuxIpLpi2c.Mux(0) // LPI2C select PLL3_SW_60M nxp.MuxIpLpi2c.Mux(0) // LPI2C select PLL3_SW_60M
// -------------------------------------------------------------------- CAN -- nxp.ClockIpCan1.Enable(false) // disable CAN
nxp.ClockIpCan1.Enable(false) // disable CAN clock gate nxp.ClockIpCan2.Enable(false) //
nxp.ClockIpCan2.Enable(false) // ~ nxp.ClockIpCan3.Enable(false) //
nxp.ClockIpCan3.Enable(false) // ~ nxp.ClockIpCan1S.Enable(false) //
nxp.ClockIpCan1S.Enable(false) // ~ nxp.ClockIpCan2S.Enable(false) //
nxp.ClockIpCan2S.Enable(false) // ~ nxp.ClockIpCan3S.Enable(false) //
nxp.ClockIpCan3S.Enable(false) // ~
nxp.DivIpCan.Div(1) // divide CAN_CLK_PODF (DIV2) nxp.DivIpCan.Div(1) // divide CAN_CLK_PODF (DIV2)
nxp.MuxIpCan.Mux(2) // CAN select PLL3_SW_80M nxp.MuxIpCan.Mux(2) // CAN select PLL3_SW_80M
// ------------------------------------------------------------------- UART -- nxp.ClockIpLpuart1.Enable(false) // disable UART
nxp.ClockIpLpuart1.Enable(false) // disable UART clock gate nxp.ClockIpLpuart2.Enable(false) //
nxp.ClockIpLpuart2.Enable(false) // ~ nxp.ClockIpLpuart3.Enable(false) //
nxp.ClockIpLpuart3.Enable(false) // ~ nxp.ClockIpLpuart4.Enable(false) //
nxp.ClockIpLpuart4.Enable(false) // ~ nxp.ClockIpLpuart5.Enable(false) //
nxp.ClockIpLpuart5.Enable(false) // ~ nxp.ClockIpLpuart6.Enable(false) //
nxp.ClockIpLpuart6.Enable(false) // ~ nxp.ClockIpLpuart7.Enable(false) //
nxp.ClockIpLpuart7.Enable(false) // ~ nxp.ClockIpLpuart8.Enable(false) //
nxp.ClockIpLpuart8.Enable(false) // ~
nxp.DivIpUart.Div(0) // divide UART_CLK_PODF (DIV1) nxp.DivIpUart.Div(0) // divide UART_CLK_PODF (DIV1)
nxp.MuxIpUart.Mux(1) // UART select OSC nxp.MuxIpUart.Mux(1) // UART select OSC
// -------------------------------------------------------------------- LCD -- nxp.ClockIpLcdPixel.Enable(false) // disable LCDIF
nxp.ClockIpLcdPixel.Enable(false) // disable LCDIF clock gate
nxp.DivIpLcdifPre.Div(1) // divide LCDIF_PRED (DIV2) nxp.DivIpLcdifPre.Div(1) // divide LCDIF_PRED (DIV2)
nxp.DivIpLcdif.Div(3) // divide LCDIF_CLK_PODF (DIV4) nxp.DivIpLcdif.Div(3) // divide LCDIF_CLK_PODF (DIV4)
nxp.MuxIpLcdifPre.Mux(5) // LCDIF_PRE select PLL3_PFD1 nxp.MuxIpLcdifPre.Mux(5) // LCDIF_PRE select PLL3_PFD1
// ------------------------------------------------------------------ SPDIF -- nxp.ClockIpSpdif.Enable(false) // disable SPDIF
nxp.ClockIpSpdif.Enable(false) // disable SPDIF clock gate
nxp.DivIpSpdif0Pre.Div(1) // divide SPDIF0_CLK_PRED (DIV2) nxp.DivIpSpdif0Pre.Div(1) // divide SPDIF0_CLK_PRED (DIV2)
nxp.DivIpSpdif0.Div(7) // divide SPDIF0_CLK_PODF (DIV8) nxp.DivIpSpdif0.Div(7) // divide SPDIF0_CLK_PODF (DIV8)
nxp.MuxIpSpdif.Mux(3) // SPDIF select PLL3_SW nxp.MuxIpSpdif.Mux(3) // SPDIF select PLL3_SW
// ----------------------------------------------------------------- FLEXIO -- nxp.ClockIpFlexio1.Enable(false) // disable FLEXIO1
nxp.ClockIpFlexio1.Enable(false) // disable FLEXIO1 clock gate
nxp.DivIpFlexio1Pre.Div(1) // divide FLEXIO1_CLK_PRED (DIV2) nxp.DivIpFlexio1Pre.Div(1) // divide FLEXIO1_CLK_PRED (DIV2)
nxp.DivIpFlexio1.Div(7) // divide FLEXIO1_CLK_PODF (DIV8) nxp.DivIpFlexio1.Div(7) // divide FLEXIO1_CLK_PODF (DIV8)
nxp.MuxIpFlexio1.Mux(3) // FLEXIO1 select PLL3_SW nxp.MuxIpFlexio1.Mux(3) // FLEXIO1 select PLL3_SW
nxp.ClockIpFlexio2.Enable(false) // enable FLEXIO2 clock gate nxp.ClockIpFlexio2.Enable(false) // disable FLEXIO2
nxp.DivIpFlexio2Pre.Div(1) // divide FLEXIO2_CLK_PRED (DIV2) nxp.DivIpFlexio2Pre.Div(1) // divide FLEXIO2_CLK_PRED (DIV2)
nxp.DivIpFlexio2.Div(7) // divide FLEXIO2_CLK_PODF (DIV8) nxp.DivIpFlexio2.Div(7) // divide FLEXIO2_CLK_PODF (DIV8)
nxp.MuxIpFlexio2.Mux(3) // FLEXIO2 select PLL3_SW nxp.MuxIpFlexio2.Mux(3) // FLEXIO2 select PLL3_SW
// ---------------------------------------------------------------- PLL/PFD --
nxp.MuxIpPll3Sw.Mux(0) // PLL3_SW select PLL3_MAIN nxp.MuxIpPll3Sw.Mux(0) // PLL3_SW select PLL3_MAIN
ArmPllConfig.Configure() // init ARM PLL ArmPllConfig.Configure() // init ARM PLL
@ -277,18 +225,15 @@ func initClocks() {
Usb1PllConfig.Configure() // init USB1 PLL and PFDs Usb1PllConfig.Configure() // init USB1 PLL and PFDs
Usb2PllConfig.Configure() // init USB2 PLL Usb2PllConfig.Configure() // init USB2 PLL
// --------------------------------------------------------------- ARM CORE --
nxp.MuxIpPrePeriph.Mux(3) // PRE_PERIPH select ARM_PLL nxp.MuxIpPrePeriph.Mux(3) // PRE_PERIPH select ARM_PLL
nxp.MuxIpPeriph.Mux(0) // PERIPH select PRE_PERIPH nxp.MuxIpPeriph.Mux(0) // PERIPH select PRE_PERIPH
nxp.MuxIpPeriphClk2.Mux(1) // PERIPH_CLK2 select OSC nxp.MuxIpPeriphClk2.Mux(1) // PERIPH_CLK2 select OSC
nxp.MuxIpPerclk.Mux(1) // PERCLK select OSC nxp.MuxIpPerclk.Mux(1) // PERCLK select OSC
// ------------------------------------------------------------------- LVDS --
// set LVDS1 clock source // set LVDS1 clock source
nxp.CCM_ANALOG.MISC1.Set((nxp.CCM_ANALOG.MISC1.Get() & ^uint32(nxp.CCM_ANALOG_MISC1_LVDS1_CLK_SEL_Msk)) | nxp.CCM_ANALOG.MISC1.Set((nxp.CCM_ANALOG.MISC1.Get() & ^uint32(nxp.CCM_ANALOG_MISC1_LVDS1_CLK_SEL_Msk)) |
((0 << nxp.CCM_ANALOG_MISC1_LVDS1_CLK_SEL_Pos) & nxp.CCM_ANALOG_MISC1_LVDS1_CLK_SEL_Msk)) ((0 << nxp.CCM_ANALOG_MISC1_LVDS1_CLK_SEL_Pos) & nxp.CCM_ANALOG_MISC1_LVDS1_CLK_SEL_Msk))
// ----------------------------------------------------------------- CLKOUT --
// set CLOCK_OUT1 divider // set CLOCK_OUT1 divider
nxp.CCM.CCOSR.Set((nxp.CCM.CCOSR.Get() & ^uint32(nxp.CCM_CCOSR_CLKO1_DIV_Msk)) | nxp.CCM.CCOSR.Set((nxp.CCM.CCOSR.Get() & ^uint32(nxp.CCM_CCOSR_CLKO1_DIV_Msk)) |
((0 << nxp.CCM_CCOSR_CLKO1_DIV_Pos) & nxp.CCM_CCOSR_CLKO1_DIV_Msk)) ((0 << nxp.CCM_CCOSR_CLKO1_DIV_Pos) & nxp.CCM_CCOSR_CLKO1_DIV_Msk))
@ -306,95 +251,80 @@ func initClocks() {
nxp.CCM.CCOSR.SetBits(nxp.CCM_CCOSR_CLKO1_EN_Msk) // enable CLK_OUT1 nxp.CCM.CCOSR.SetBits(nxp.CCM_CCOSR_CLKO1_EN_Msk) // enable CLK_OUT1
nxp.CCM.CCOSR.SetBits(nxp.CCM_CCOSR_CLKO2_EN_Msk) // enable CLK_OUT2 nxp.CCM.CCOSR.SetBits(nxp.CCM_CCOSR_CLKO2_EN_Msk) // enable CLK_OUT2
// ----------------------------------------------------------------- IOMUXC -- nxp.ClockIpIomuxcGpr.Enable(false) // disable IOMUXC_GPR
nxp.ClockIpIomuxcGpr.Enable(false) // disable IOMUXC_GPR clock gate nxp.ClockIpIomuxc.Enable(false) // disable IOMUXC
nxp.ClockIpIomuxc.Enable(false) // disable IOMUXC clock gate
// set GPT1 High frequency reference clock source // set GPT1 High frequency reference clock source
nxp.IOMUXC_GPR.GPR5.ClearBits(nxp.IOMUXC_GPR_GPR5_VREF_1M_CLK_GPT1_Msk) nxp.IOMUXC_GPR.GPR5.ClearBits(nxp.IOMUXC_GPR_GPR5_VREF_1M_CLK_GPT1_Msk)
// set GPT2 High frequency reference clock source // set GPT2 High frequency reference clock source
nxp.IOMUXC_GPR.GPR5.ClearBits(nxp.IOMUXC_GPR_GPR5_VREF_1M_CLK_GPT2_Msk) nxp.IOMUXC_GPR.GPR5.ClearBits(nxp.IOMUXC_GPR_GPR5_VREF_1M_CLK_GPT2_Msk)
// ------------------------------------------------------------------- GPIO -- nxp.ClockIpGpio1.Enable(false) // disable GPIO
nxp.ClockIpGpio1.Enable(false) // disable GPIO clock gates nxp.ClockIpGpio2.Enable(false) //
nxp.ClockIpGpio2.Enable(false) // ~ nxp.ClockIpGpio3.Enable(false) //
nxp.ClockIpGpio3.Enable(false) // ~ nxp.ClockIpGpio4.Enable(false) //
nxp.ClockIpGpio4.Enable(false) // ~
} }
func enableTimerClocks() { func enableTimerClocks() {
// ---------------------------------------------------------------- GPT/PIT -- nxp.ClockIpGpt1.Enable(true) // enable GPT/PIT
nxp.ClockIpGpt1.Enable(true) // enable GPT/PIT clock gates nxp.ClockIpGpt1S.Enable(true) //
nxp.ClockIpGpt1S.Enable(true) // ~ nxp.ClockIpGpt2.Enable(true) //
nxp.ClockIpGpt2.Enable(true) // ~ nxp.ClockIpGpt2S.Enable(true) //
nxp.ClockIpGpt2S.Enable(true) // ~ nxp.ClockIpPit.Enable(true) //
nxp.ClockIpPit.Enable(true) // ~
} }
func enablePinClocks() { func enablePinClocks() {
// ----------------------------------------------------------------- IOMUXC -- nxp.ClockIpIomuxcGpr.Enable(true) // enable IOMUXC
nxp.ClockIpIomuxcGpr.Enable(true) // enable IOMUXC clock gates nxp.ClockIpIomuxc.Enable(true) //
nxp.ClockIpIomuxc.Enable(true) // ~
// ------------------------------------------------------------------- GPIO -- nxp.ClockIpGpio1.Enable(true) // enable GPIO
nxp.ClockIpGpio1.Enable(true) // enable GPIO clock gates nxp.ClockIpGpio2.Enable(true) //
nxp.ClockIpGpio2.Enable(true) // ~ nxp.ClockIpGpio3.Enable(true) //
nxp.ClockIpGpio3.Enable(true) // ~ nxp.ClockIpGpio4.Enable(true) //
nxp.ClockIpGpio4.Enable(true) // ~
} }
func enablePeripheralClocks() { func enablePeripheralClocks() {
// -------------------------------------------------------------------- ADC -- nxp.ClockIpAdc1.Enable(true) // enable ADC
nxp.ClockIpAdc1.Enable(true) // enable ADC clock gates nxp.ClockIpAdc2.Enable(true) //
nxp.ClockIpAdc2.Enable(true) // ~
// ------------------------------------------------------------------- XBAR -- nxp.ClockIpXbar1.Enable(true) // enable XBAR
nxp.ClockIpXbar1.Enable(true) // enable XBAR clock gates nxp.ClockIpXbar2.Enable(true) //
nxp.ClockIpXbar2.Enable(true) // ~ nxp.ClockIpXbar3.Enable(true) //
nxp.ClockIpXbar3.Enable(true) // ~
// ------------------------------------------------------------------ USDHC -- nxp.ClockIpUsdhc1.Enable(true) // enable USDHC
nxp.ClockIpUsdhc1.Enable(true) // enable USDHC clock gates nxp.ClockIpUsdhc2.Enable(true) //
nxp.ClockIpUsdhc2.Enable(true) // ~
// ------------------------------------------------------------------- SEMC -- nxp.ClockIpSemc.Enable(true) // enable SEMC
nxp.ClockIpSemc.Enable(true) // enable SEMC clock gate
// ---------------------------------------------------------------- FLEXSPI -- nxp.ClockIpFlexSpi2.Enable(true) // enable FLEXSPI2
nxp.ClockIpFlexSpi2.Enable(true) // enable FLEXSPI2 clock gate
// ------------------------------------------------------------------ LPSPI -- nxp.ClockIpLpspi1.Enable(true) // enable LPSPI
nxp.ClockIpLpspi1.Enable(true) // enable LPSPI clock gate nxp.ClockIpLpspi2.Enable(true) //
nxp.ClockIpLpspi2.Enable(true) // ~ nxp.ClockIpLpspi3.Enable(true) //
nxp.ClockIpLpspi3.Enable(true) // ~ nxp.ClockIpLpspi4.Enable(true) //
nxp.ClockIpLpspi4.Enable(true) // ~
// ------------------------------------------------------------------ LPI2C -- nxp.ClockIpLpi2c1.Enable(true) // enable LPI2C
nxp.ClockIpLpi2c1.Enable(true) // enable LPI2C clock gate nxp.ClockIpLpi2c2.Enable(true) //
nxp.ClockIpLpi2c2.Enable(true) // ~ nxp.ClockIpLpi2c3.Enable(true) //
nxp.ClockIpLpi2c3.Enable(true) // ~
// -------------------------------------------------------------------- CAN -- nxp.ClockIpCan1.Enable(true) // enable CAN
nxp.ClockIpCan1.Enable(true) // enable CAN clock gate nxp.ClockIpCan2.Enable(true) //
nxp.ClockIpCan2.Enable(true) // ~ nxp.ClockIpCan3.Enable(true) //
nxp.ClockIpCan3.Enable(true) // ~ nxp.ClockIpCan1S.Enable(true) //
nxp.ClockIpCan1S.Enable(true) // ~ nxp.ClockIpCan2S.Enable(true) //
nxp.ClockIpCan2S.Enable(true) // ~ nxp.ClockIpCan3S.Enable(true) //
nxp.ClockIpCan3S.Enable(true) // ~
// ------------------------------------------------------------------- UART -- nxp.ClockIpLpuart1.Enable(true) // enable UART
nxp.ClockIpLpuart1.Enable(true) // enable UART clock gate nxp.ClockIpLpuart2.Enable(true) //
nxp.ClockIpLpuart2.Enable(true) // ~ nxp.ClockIpLpuart3.Enable(true) //
nxp.ClockIpLpuart3.Enable(true) // ~ nxp.ClockIpLpuart4.Enable(true) //
nxp.ClockIpLpuart4.Enable(true) // ~ nxp.ClockIpLpuart5.Enable(true) //
nxp.ClockIpLpuart5.Enable(true) // ~ nxp.ClockIpLpuart6.Enable(true) //
nxp.ClockIpLpuart6.Enable(true) // ~ nxp.ClockIpLpuart7.Enable(true) //
nxp.ClockIpLpuart7.Enable(true) // ~ nxp.ClockIpLpuart8.Enable(true) //
nxp.ClockIpLpuart8.Enable(true) // ~
// ----------------------------------------------------------------- FLEXIO -- nxp.ClockIpFlexio1.Enable(true) // enable FLEXIO
nxp.ClockIpFlexio1.Enable(true) // enable FLEXIO clock gates nxp.ClockIpFlexio2.Enable(true) //
nxp.ClockIpFlexio2.Enable(true) // ~
} }

28
src/runtime/runtime_mimxrt1062_mpu.go
Просмотреть файл

@ -10,50 +10,38 @@ func initCache() {
nxp.MPU.Enable(false) nxp.MPU.Enable(false)
// -------------------------------------------------------- OVERLAY REGIONS --
// add Default [0] region to deny access to whole address space to workaround // add Default [0] region to deny access to whole address space to workaround
// speculative prefetch. Refer to Arm errata 1013783-B for more details. // speculative prefetch. Refer to Arm errata 1013783-B for more details.
// [0] Default {OVERLAY}: // [0] Default {OVERLAY}: 4 GiB, -access, @device, -exec, -share, -cache, -buffer, -subregion
// 4 GiB, -access, @device, -exec, -share, -cache, -buffer, -subregion
nxp.MPU.SetRBAR(0, 0x00000000) nxp.MPU.SetRBAR(0, 0x00000000)
nxp.MPU.SetRASR(nxp.RGNSZ_4GB, nxp.PERM_NONE, nxp.EXTN_DEVICE, false, false, false, false, false) nxp.MPU.SetRASR(nxp.RGNSZ_4GB, nxp.PERM_NONE, nxp.EXTN_DEVICE, false, false, false, false, false)
// [1] Peripherals {OVERLAY}: // [1] Peripherals {OVERLAY}: 64 MiB, +ACCESS, @device, +EXEC, -share, -cache, -buffer, -subregion
// 64 MiB, +ACCESS, @device, +EXEC, -share, -cache, -buffer, -subregion
nxp.MPU.SetRBAR(1, 0x40000000) nxp.MPU.SetRBAR(1, 0x40000000)
nxp.MPU.SetRASR(nxp.RGNSZ_64MB, nxp.PERM_FULL, nxp.EXTN_DEVICE, true, false, false, false, false) nxp.MPU.SetRASR(nxp.RGNSZ_64MB, nxp.PERM_FULL, nxp.EXTN_DEVICE, true, false, false, false, false)
// [2] RAM {OVERLAY}: // [2] RAM {OVERLAY}: 1 GiB, +ACCESS, @device, +EXEC, -share, -cache, -buffer, -subregion
// 1 GiB, +ACCESS, @device, +EXEC, -share, -cache, -buffer, -subregion
nxp.MPU.SetRBAR(2, 0x00000000) nxp.MPU.SetRBAR(2, 0x00000000)
nxp.MPU.SetRASR(nxp.RGNSZ_1GB, nxp.PERM_FULL, nxp.EXTN_DEVICE, true, false, false, false, false) nxp.MPU.SetRASR(nxp.RGNSZ_1GB, nxp.PERM_FULL, nxp.EXTN_DEVICE, true, false, false, false, false)
// ----------------------------------------------------- PERIPHERAL REGIONS -- // [3] ITCM: 512 KiB, +ACCESS, #NORMAL, +EXEC, -share, -cache, -buffer, -subregion
// [3] ITCM:
// 512 KiB, +ACCESS, #NORMAL, +EXEC, -share, -cache, -buffer, -subregion
nxp.MPU.SetRBAR(3, 0x00000000) nxp.MPU.SetRBAR(3, 0x00000000)
nxp.MPU.SetRASR(nxp.RGNSZ_512KB, nxp.PERM_FULL, nxp.EXTN_NORMAL, true, false, false, false, false) nxp.MPU.SetRASR(nxp.RGNSZ_512KB, nxp.PERM_FULL, nxp.EXTN_NORMAL, true, false, false, false, false)
// [4] DTCM: // [4] DTCM: 512 KiB, +ACCESS, #NORMAL, +EXEC, -share, -cache, -buffer, -subregion
// 512 KiB, +ACCESS, #NORMAL, +EXEC, -share, -cache, -buffer, -subregion
nxp.MPU.SetRBAR(4, 0x20000000) nxp.MPU.SetRBAR(4, 0x20000000)
nxp.MPU.SetRASR(nxp.RGNSZ_512KB, nxp.PERM_FULL, nxp.EXTN_NORMAL, true, false, false, false, false) nxp.MPU.SetRASR(nxp.RGNSZ_512KB, nxp.PERM_FULL, nxp.EXTN_NORMAL, true, false, false, false, false)
// [5] RAM (AXI): // [5] RAM (AXI): 512 KiB, +ACCESS, #NORMAL, +EXEC, -share, +CACHE, +BUFFER, -subregion
// 512 KiB, +ACCESS, #NORMAL, +EXEC, -share, +CACHE, +BUFFER, -subregion
nxp.MPU.SetRBAR(5, 0x20200000) nxp.MPU.SetRBAR(5, 0x20200000)
nxp.MPU.SetRASR(nxp.RGNSZ_512KB, nxp.PERM_FULL, nxp.EXTN_NORMAL, true, false, true, true, false) nxp.MPU.SetRASR(nxp.RGNSZ_512KB, nxp.PERM_FULL, nxp.EXTN_NORMAL, true, false, true, true, false)
// [6] FlexSPI: // [6] FlexSPI: 512 MiB, +ACCESS, #NORMAL, +EXEC, -share, +CACHE, +BUFFER, -subregion
// 512 MiB, +ACCESS, #NORMAL, +EXEC, -share, +CACHE, +BUFFER, -subregion
nxp.MPU.SetRBAR(6, 0x70000000) nxp.MPU.SetRBAR(6, 0x70000000)
nxp.MPU.SetRASR(nxp.RGNSZ_512MB, nxp.PERM_FULL, nxp.EXTN_NORMAL, true, false, true, true, false) nxp.MPU.SetRASR(nxp.RGNSZ_512MB, nxp.PERM_FULL, nxp.EXTN_NORMAL, true, false, true, true, false)
// [7] QSPI flash: // [7] QSPI flash: 2 MiB, +ACCESS, #NORMAL, +EXEC, -share, +CACHE, +BUFFER, -subregion
// 2 MiB, +ACCESS, #NORMAL, +EXEC, -share, +CACHE, +BUFFER, -subregion
nxp.MPU.SetRBAR(7, 0x60000000) nxp.MPU.SetRBAR(7, 0x60000000)
nxp.MPU.SetRASR(nxp.RGNSZ_2MB, nxp.PERM_FULL, nxp.EXTN_NORMAL, true, false, true, true, false) nxp.MPU.SetRASR(nxp.RGNSZ_2MB, nxp.PERM_FULL, nxp.EXTN_NORMAL, true, false, true, true, false)

43
src/runtime/runtime_mimxrt1062_time.go
Просмотреть файл

@ -12,14 +12,14 @@ import (
type timeUnit int64 type timeUnit int64
const ( // HW divides 24 MHz XTALOSC down to 100 kHz const (
lastCycle = SYSTICK_FREQ/1000 - 1 lastCycle = SYSTICK_FREQ/1000 - 1
cyclesPerMicro = CORE_FREQ / 1000000 cyclesPerMicro = CORE_FREQ / 1000000
) )
const ( const (
PIT_FREQ = PERCLK_FREQ pitFreq = OSC_FREQ // PIT/GPT are muxed to 24 MHz OSC
pitCyclesPerMicro = PIT_FREQ / 1000000 pitCyclesPerMicro = pitFreq / 1000000
pitSleepTimer = 0 // x4 32-bit PIT timers [0..3] pitSleepTimer = 0 // x4 32-bit PIT timers [0..3]
) )
@ -32,16 +32,11 @@ var (
var ( var (
// debug exception and monitor control // debug exception and monitor control
DEMCR = (*volatile.Register32)(unsafe.Pointer(uintptr(0xe000edfc))) DEM_CR = (*volatile.Register32)(unsafe.Pointer(uintptr(0xe000edfc)))
DWT_CTRL = (*volatile.Register32)(unsafe.Pointer(uintptr(0xe0001000))) DWT_CR = (*volatile.Register32)(unsafe.Pointer(uintptr(0xe0001000)))
DWT_CYCCNT = (*volatile.Register32)(unsafe.Pointer(uintptr(0xe0001004))) DWT_CYCCNT = (*volatile.Register32)(unsafe.Pointer(uintptr(0xe0001004)))
) )
const (
DEMCR_TRCENA = 0x01000000 // enable debugging & monitoring blocks
DWT_CTRL_CYCCNTENA = 0x00000001 // cycle count register
)
func ticksToNanoseconds(ticks timeUnit) int64 { func ticksToNanoseconds(ticks timeUnit) int64 {
return int64(ticks) * 1000 return int64(ticks) * 1000
} }
@ -51,22 +46,30 @@ func nanosecondsToTicks(ns int64) timeUnit {
} }
func initSysTick() { func initSysTick() {
// disable if already running
const (
traceEnable = 0x01000000 // enable debugging & monitoring blocks
cycleCountEnable = 0x00000001 // cycle count register
)
// disable SysTick if already running
if arm.SYST.SYST_CSR.HasBits(arm.SYST_CSR_ENABLE_Msk) { if arm.SYST.SYST_CSR.HasBits(arm.SYST_CSR_ENABLE_Msk) {
arm.SYST.SYST_CSR.ClearBits(arm.SYST_CSR_ENABLE_Msk) arm.SYST.SYST_CSR.ClearBits(arm.SYST_CSR_ENABLE_Msk)
} }
// zeroize the counter // zeroize the counter
tickCount.Set(0) tickCount.Set(0)
arm.SYST.SYST_RVR.Set(lastCycle) arm.SYST.SYST_RVR.Set(lastCycle)
arm.SYST.SYST_CVR.Set(0) arm.SYST.SYST_CVR.Set(0)
arm.SYST.SYST_CSR.Set(arm.SYST_CSR_TICKINT | arm.SYST_CSR_ENABLE) arm.SYST.SYST_CSR.Set(arm.SYST_CSR_TICKINT | arm.SYST_CSR_ENABLE)
// set SysTick and PendSV priority to 32 // set SysTick and PendSV priority to 32
nxp.SystemControl.SHPR3.Set((0x20 << nxp.SCB_SHPR3_PRI_15_Pos) | nxp.SystemControl.SHPR3.Set((0x20 << nxp.SCB_SHPR3_PRI_15_Pos) |
(0x20 << nxp.SCB_SHPR3_PRI_14_Pos)) (0x20 << nxp.SCB_SHPR3_PRI_14_Pos))
// turn on cycle counter // turn on cycle counter
DEMCR.SetBits(DEMCR_TRCENA) DEM_CR.SetBits(traceEnable)
DWT_CTRL.SetBits(DWT_CTRL_CYCCNTENA) DWT_CR.SetBits(cycleCountEnable)
cycleCount.Set(DWT_CYCCNT.Get()) cycleCount.Set(DWT_CYCCNT.Get())
// enable PIT, disable counters // enable PIT, disable counters
@ -74,6 +77,7 @@ func initSysTick() {
for i := range nxp.PIT.TIMER { for i := range nxp.PIT.TIMER {
nxp.PIT.TIMER[i].TCTRL.Set(0) nxp.PIT.TIMER[i].TCTRL.Set(0)
} }
// register sleep timer interrupt // register sleep timer interrupt
pitTimeout = interrupt.New(nxp.IRQ_PIT, timerWake) pitTimeout = interrupt.New(nxp.IRQ_PIT, timerWake)
pitTimeout.SetPriority(0x21) pitTimeout.SetPriority(0x21)
@ -101,7 +105,13 @@ func ticks() timeUnit {
cycs := cycleCount.Get() cycs := cycleCount.Get()
curr := DWT_CYCCNT.Get() curr := DWT_CYCCNT.Get()
arm.EnableInterrupts(mask) arm.EnableInterrupts(mask)
frac := uint64((curr-cycs)*0xFFFFFFFF/cyclesPerMicro) >> 32 var diff uint32
if curr < cycs { // cycle counter overflow/rollover occurred
diff = (0xFFFFFFFF - cycs) + curr
} else {
diff = curr - cycs
}
frac := uint64(diff*0xFFFFFFFF/cyclesPerMicro) >> 32
if frac > 1000 { if frac > 1000 {
frac = 1000 frac = 1000
} }
@ -111,15 +121,14 @@ func ticks() timeUnit {
func sleepTicks(duration timeUnit) { func sleepTicks(duration timeUnit) {
if duration >= 0 { if duration >= 0 {
curr := ticks() curr := ticks()
last := curr + duration last := curr + duration // 64-bit overflow unlikely
for curr < last { for curr < last {
cycles := timeUnit((last - curr) / pitCyclesPerMicro) cycles := timeUnit((last - curr) / pitCyclesPerMicro)
if cycles > 0xFFFFFFFF { if cycles > 0xFFFFFFFF {
cycles = 0xFFFFFFFF cycles = 0xFFFFFFFF
} }
if !timerSleep(uint32(cycles)) { if !timerSleep(uint32(cycles)) {
// return early due to interrupt return // return early due to interrupt
return
} }
curr = ticks() curr = ticks()
} }

8
targets/teensy40.json
Просмотреть файл

@ -4,17 +4,13 @@
"cpu": "cortex-m7", "cpu": "cortex-m7",
"build-tags": ["teensy40", "teensy", "mimxrt1062", "nxp"], "build-tags": ["teensy40", "teensy", "mimxrt1062", "nxp"],
"automatic-stack-size": false, "automatic-stack-size": false,
"default-stack-size": 131072, "default-stack-size": 4096,
"cflags": [ "cflags": [
"--target=armv7em-none-eabi", "--target=armv7em-none-eabi",
"-Qunused-arguments", "-Qunused-arguments",
"-mfloat-abi=hard", "-mfloat-abi=soft",
"-mfpu=fpv5-d16" "-mfpu=fpv5-d16"
], ],
"ldflags": [
"--emit-relocs",
"--gc-sections"
],
"linkerscript": "targets/mimxrt1062-teensy40.ld", "linkerscript": "targets/mimxrt1062-teensy40.ld",
"extra-files": [ "extra-files": [
"src/device/nxp/mimxrt1062.s", "src/device/nxp/mimxrt1062.s",