Этот коммит содержится в:
Kenneth Bell 2021-05-06 20:45:11 -07:00 коммит произвёл Ron Evans
родитель 422ebeeec7
коммит ee167f15de
7 изменённых файлов: 689 добавлений и 3 удалений

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@ -381,6 +381,8 @@ ifneq ($(STM32), 0)
@$(MD5SUM) test.hex @$(MD5SUM) test.hex
$(TINYGO) build -size short -o test.hex -target=stm32f4disco-1 examples/blinky1 $(TINYGO) build -size short -o test.hex -target=stm32f4disco-1 examples/blinky1
@$(MD5SUM) test.hex @$(MD5SUM) test.hex
$(TINYGO) build -size short -o test.hex -target=stm32f4disco-1 examples/pwm
@$(MD5SUM) test.hex
endif endif
ifneq ($(AVR), 0) ifneq ($(AVR), 0)
$(TINYGO) build -size short -o test.hex -target=atmega1284p examples/serial $(TINYGO) build -size short -o test.hex -target=atmega1284p examples/serial

13
src/examples/pwm/stm32f4disco.go Обычный файл
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@ -0,0 +1,13 @@
// +build stm32f4disco
package main
import "machine"
var (
// These pins correspond to LEDs on the discovery
// board
pwm = &machine.TIM4
pinA = machine.PD12
pinB = machine.PD13
)

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@ -35,7 +35,7 @@ const (
PinInputAnalog PinMode = 11 PinInputAnalog PinMode = 11
// for PWM // for PWM
// TBD PinModePWMOutput PinMode = 12
) )
// Define several bitfields that have different names across chip families but // Define several bitfields that have different names across chip families but
@ -135,6 +135,13 @@ func (p Pin) ConfigureAltFunc(config PinConfig, altFunc uint8) {
port.OSPEEDR.ReplaceBits(gpioOutputSpeedLow, gpioOutputSpeedMask, pos) port.OSPEEDR.ReplaceBits(gpioOutputSpeedLow, gpioOutputSpeedMask, pos)
port.PUPDR.ReplaceBits(gpioPullFloating, gpioPullMask, pos) port.PUPDR.ReplaceBits(gpioPullFloating, gpioPullMask, pos)
p.SetAltFunc(altFunc) p.SetAltFunc(altFunc)
// PWM
case PinModePWMOutput:
port.MODER.ReplaceBits(gpioModeAlternate, gpioModeMask, pos)
port.OSPEEDR.ReplaceBits(gpioOutputSpeedHigh, gpioOutputSpeedMask, pos)
port.PUPDR.ReplaceBits(gpioPullFloating, gpioPullMask, pos)
p.SetAltFunc(altFunc)
} }
} }

334
src/machine/machine_stm32_tim.go Обычный файл
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@ -0,0 +1,334 @@
// +build stm32f4
package machine
import (
"device/stm32"
"runtime/interrupt"
"runtime/volatile"
)
type TimerCallback func()
type ChannelCallback func(channel uint8)
type PinFunction struct {
Pin Pin
AltFunc uint8
}
type TimerChannel struct {
Pins []PinFunction
}
type TIM struct {
EnableRegister *volatile.Register32
EnableFlag uint32
Device *stm32.TIM_Type
Channels [4]TimerChannel
UpInterrupt interrupt.Interrupt
OCInterrupt interrupt.Interrupt
wraparoundCallback TimerCallback
channelCallbacks [4]ChannelCallback
busFreq uint64
}
// Configure enables and configures this PWM.
func (t *TIM) Configure(config PWMConfig) error {
// Enable device
t.EnableRegister.SetBits(t.EnableFlag)
err := t.setPeriod(config.Period, true)
if err != nil {
return err
}
// Auto-repeat
t.Device.EGR.SetBits(stm32.TIM_EGR_UG)
// Enable the timer
t.Device.CR1.SetBits(stm32.TIM_CR1_CEN | stm32.TIM_CR1_ARPE)
return nil
}
func (t *TIM) Count() uint32 {
return uint32(t.Device.CNT.Get())
}
// SetWraparoundInterrupt configures a callback to be called each
// time the timer 'wraps-around'.
//
// For example, if `Configure(PWMConfig{Period:1000000})` is used,
// to set the timer period to 1ms, this callback will be called every
// 1ms.
func (t *TIM) SetWraparoundInterrupt(callback TimerCallback) error {
// Disable this interrupt to prevent race conditions
//t.UpInterrupt.Disable()
// Ensure the interrupt handler for Update events is registered
t.UpInterrupt = t.registerUPInterrupt()
// Clear update flag
t.Device.SR.ClearBits(stm32.TIM_SR_UIF)
t.wraparoundCallback = callback
t.UpInterrupt.SetPriority(0xc1)
t.UpInterrupt.Enable()
// Enable the hardware interrupt
t.Device.DIER.SetBits(stm32.TIM_DIER_UIE)
return nil
}
// Sets a callback to be called when a channel reaches it's set-point.
//
// For example, if `t.Set(ch, t.Top() / 4)` is used then the callback will
// be called every quarter-period of the timer's base Period.
func (t *TIM) SetMatchInterrupt(channel uint8, callback ChannelCallback) error {
t.channelCallbacks[channel] = callback
// Ensure the interrupt handler for Output Compare events is registered
t.OCInterrupt = t.registerOCInterrupt()
// Clear the interrupt flag
t.Device.SR.ClearBits(stm32.TIM_SR_CC1IF_Match << channel)
// Enable the interrupt
t.OCInterrupt.SetPriority(0xc1)
t.OCInterrupt.Enable()
// Enable the hardware interrupt
t.Device.DIER.SetBits(stm32.TIM_DIER_CC1IE << channel)
return nil
}
// SetPeriod updates the period of this PWM peripheral.
// To set a particular frequency, use the following formula:
//
// period = 1e9 / frequency
//
// If you use a period of 0, a period that works well for LEDs will be picked.
//
// SetPeriod will not change the prescaler, but also won't change the current
// value in any of the channels. This means that you may need to update the
// value for the particular channel.
//
// Note that you cannot pick any arbitrary period after the PWM peripheral has
// been configured. If you want to switch between frequencies, pick the lowest
// frequency (longest period) once when calling Configure and adjust the
// frequency here as needed.
func (t *TIM) SetPeriod(period uint64) error {
return t.setPeriod(period, false)
}
func (t *TIM) setPeriod(period uint64, updatePrescaler bool) error {
var top uint64
if period == 0 {
top = ARR_MAX
} else {
top = (period / 1000) * (t.busFreq / 1000) / 1000
}
var psc uint64
if updatePrescaler {
if top > ARR_MAX*PSC_MAX {
return ErrPWMPeriodTooLong
}
// Select the minimum PSC that scales the ARR value into
// range to maintain precision in ARR for changing frequencies
// later
psc = ceil(top, ARR_MAX)
top = top / psc
t.Device.PSC.Set(uint32(psc - 1))
} else {
psc = uint64(t.Device.PSC.Get()) + 1
top = top / psc
if top > ARR_MAX {
return ErrPWMPeriodTooLong
}
}
t.Device.ARR.Set(arrtype(top - 1))
return nil
}
// Top returns the current counter top, for use in duty cycle calculation. It
// will only change with a call to Configure or SetPeriod, otherwise it is
// constant.
//
// The value returned here is hardware dependent. In general, it's best to treat
// it as an opaque value that can be divided by some number and passed to
// pwm.Set (see pwm.Set for more information).
func (t *TIM) Top() uint32 {
return uint32(t.Device.ARR.Get()) + 1
}
// Channel returns a PWM channel for the given pin.
func (t *TIM) Channel(pin Pin) (uint8, error) {
for chi, ch := range t.Channels {
for _, p := range ch.Pins {
if p.Pin == pin {
p.Pin.ConfigureAltFunc(PinConfig{Mode: PinModePWMOutput}, p.AltFunc)
return uint8(chi), nil
}
}
}
return 0, ErrInvalidOutputPin
}
// Set updates the channel value. This is used to control the channel duty
// cycle. For example, to set it to a 25% duty cycle, use:
//
// t.Set(ch, t.Top() / 4)
//
// ch.Set(0) will set the output to low and ch.Set(ch.Top()) will set the output
// to high, assuming the output isn't inverted.
func (t *TIM) Set(channel uint8, value uint32) {
t.enableMainOutput()
ccr := t.channelCCR(channel)
ccmr, offset := t.channelCCMR(channel)
// Disable interrupts whilst programming to prevent spurious OC interrupts
mask := interrupt.Disable()
// Set the PWM to Mode 1 (active below set value, inactive above)
// Preload is disabled so we can change OC value within one update period.
var ccmrVal uint32
ccmrVal |= PWM_MODE1 << stm32.TIM_CCMR1_Output_OC1M_Pos
ccmr.ReplaceBits(ccmrVal, 0xFF, offset)
// Set the compare value
ccr.Set(arrtype(value))
// Enable the channel (if not already)
t.Device.CCER.ReplaceBits(stm32.TIM_CCER_CC1E, 0xD, channel*4)
// Force update
t.Device.EGR.SetBits(stm32.TIM_EGR_CC1G << channel)
// Reset Interrupt Flag
t.Device.SR.ClearBits(stm32.TIM_SR_CC1IF << channel)
// Restore interrupts
interrupt.Restore(mask)
}
// Unset disables a channel, including any configured interrupts.
func (t *TIM) Unset(channel uint8) {
// Disable interrupts whilst programming to prevent spurious OC interrupts
mask := interrupt.Disable()
// Disable the channel
t.Device.CCER.ReplaceBits(0, 0xD, channel*4)
// Reset to zero value
ccr := t.channelCCR(channel)
ccr.Set(0)
// Disable the hardware interrupt
t.Device.DIER.ClearBits(stm32.TIM_DIER_CC1IE << channel)
// Clear the interrupt flag
t.Device.SR.ClearBits(stm32.TIM_SR_CC1IF << channel)
// Restore interrupts
interrupt.Restore(mask)
}
// SetInverting sets whether to invert the output of this channel.
// Without inverting, a 25% duty cycle would mean the output is high for 25% of
// the time and low for the rest. Inverting flips the output as if a NOT gate
// was placed at the output, meaning that the output would be 25% low and 75%
// high with a duty cycle of 25%.
func (t *TIM) SetInverting(channel uint8, inverting bool) {
// Enable the channel (if not already)
var val = uint32(0)
if inverting {
val |= stm32.TIM_CCER_CC1P
}
t.Device.CCER.ReplaceBits(val, stm32.TIM_CCER_CC1P_Msk, channel*4)
}
func (t *TIM) handleUPInterrupt(interrupt.Interrupt) {
if t.Device.SR.HasBits(stm32.TIM_SR_UIF) {
// clear the update flag
t.Device.SR.ClearBits(stm32.TIM_SR_UIF)
if t.wraparoundCallback != nil {
t.wraparoundCallback()
}
}
}
func (t *TIM) handleOCInterrupt(interrupt.Interrupt) {
if t.Device.SR.HasBits(stm32.TIM_SR_CC1IF) {
if t.channelCallbacks[0] != nil {
t.channelCallbacks[0](0)
}
}
if t.Device.SR.HasBits(stm32.TIM_SR_CC2IF) {
if t.channelCallbacks[1] != nil {
t.channelCallbacks[1](1)
}
}
if t.Device.SR.HasBits(stm32.TIM_SR_CC3IF) {
if t.channelCallbacks[2] != nil {
t.channelCallbacks[2](2)
}
}
if t.Device.SR.HasBits(stm32.TIM_SR_CC4IF) {
if t.channelCallbacks[3] != nil {
t.channelCallbacks[3](3)
}
}
// Reset interrupt flags
t.Device.SR.ClearBits(stm32.TIM_SR_CC1IF | stm32.TIM_SR_CC2IF | stm32.TIM_SR_CC3IF | stm32.TIM_SR_CC4IF)
}
func (t *TIM) channelCCR(channel uint8) *arrRegType {
switch channel {
case 0:
return &t.Device.CCR1
case 1:
return &t.Device.CCR2
case 2:
return &t.Device.CCR3
case 3:
return &t.Device.CCR4
}
return nil
}
func (t *TIM) channelCCMR(channel uint8) (reg *volatile.Register32, offset uint8) {
switch channel {
case 0:
return &t.Device.CCMR1_Output, 0
case 1:
return &t.Device.CCMR1_Output, 8
case 2:
return &t.Device.CCMR2_Output, 0
case 3:
return &t.Device.CCMR2_Output, 8
}
return nil, 0
}
//go:inline
func ceil(num uint64, denom uint64) uint64 {
return (num + denom - 1) / denom
}

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@ -6,6 +6,8 @@ package machine
import ( import (
"device/stm32" "device/stm32"
"runtime/interrupt"
"runtime/volatile"
"unsafe" "unsafe"
) )
@ -95,8 +97,56 @@ const (
PE14 = portE + 14 PE14 = portE + 14
PE15 = portE + 15 PE15 = portE + 15
PF0 = portF + 0
PF1 = portF + 1
PF2 = portF + 2
PF3 = portF + 3
PF4 = portF + 4
PF5 = portF + 5
PF6 = portF + 6
PF7 = portF + 7
PF8 = portF + 8
PF9 = portF + 9
PF10 = portF + 10
PF11 = portF + 11
PF12 = portF + 12
PF13 = portF + 13
PF14 = portF + 14
PF15 = portF + 15
PH0 = portH + 0 PH0 = portH + 0
PH1 = portH + 1 PH1 = portH + 1
PH2 = portH + 2
PH3 = portH + 3
PH4 = portH + 4
PH5 = portH + 5
PH6 = portH + 6
PH7 = portH + 7
PH8 = portH + 8
PH9 = portH + 9
PH10 = portH + 10
PH11 = portH + 11
PH12 = portH + 12
PH13 = portH + 13
PH14 = portH + 14
PH15 = portH + 15
PI0 = portI + 0
PI1 = portI + 1
PI2 = portI + 2
PI3 = portI + 3
PI4 = portI + 4
PI5 = portI + 5
PI6 = portI + 6
PI7 = portI + 7
PI8 = portI + 8
PI9 = portI + 9
PI10 = portI + 10
PI11 = portI + 11
PI12 = portI + 12
PI13 = portI + 13
PI14 = portI + 14
PI15 = portI + 15
) )
func (p Pin) getPort() *stm32.GPIO_Type { func (p Pin) getPort() *stm32.GPIO_Type {
@ -227,3 +277,271 @@ func enableAltFuncClock(bus unsafe.Pointer) {
stm32.RCC.APB2ENR.SetBits(stm32.RCC_APB2ENR_TIM1EN) stm32.RCC.APB2ENR.SetBits(stm32.RCC_APB2ENR_TIM1EN)
} }
} }
//---------- Timer related code
var (
TIM1 = TIM{
EnableRegister: &stm32.RCC.APB2ENR,
EnableFlag: stm32.RCC_APB2ENR_TIM1EN,
Device: stm32.TIM1,
Channels: [4]TimerChannel{
TimerChannel{Pins: []PinFunction{{PA8, AF1_TIM1_2}, {PE9, AF1_TIM1_2}}},
TimerChannel{Pins: []PinFunction{{PA9, AF1_TIM1_2}, {PE11, AF1_TIM1_2}}},
TimerChannel{Pins: []PinFunction{{PA10, AF1_TIM1_2}, {PE13, AF1_TIM1_2}}},
TimerChannel{Pins: []PinFunction{{PA11, AF1_TIM1_2}, {PE14, AF1_TIM1_2}}},
},
busFreq: APB2_TIM_FREQ,
}
TIM2 = TIM{
EnableRegister: &stm32.RCC.APB1ENR,
EnableFlag: stm32.RCC_APB1ENR_TIM2EN,
Device: stm32.TIM2,
Channels: [4]TimerChannel{
TimerChannel{Pins: []PinFunction{{PA0, AF1_TIM1_2}, {PA5, AF1_TIM1_2}, {PA15, AF1_TIM1_2}}},
TimerChannel{Pins: []PinFunction{{PA1, AF1_TIM1_2}, {PB3, AF1_TIM1_2}}},
TimerChannel{Pins: []PinFunction{{PA2, AF1_TIM1_2}, {PB10, AF1_TIM1_2}}},
TimerChannel{Pins: []PinFunction{{PA3, AF1_TIM1_2}, {PB11, AF1_TIM1_2}}},
},
busFreq: APB1_TIM_FREQ,
}
TIM3 = TIM{
EnableRegister: &stm32.RCC.APB1ENR,
EnableFlag: stm32.RCC_APB1ENR_TIM3EN,
Device: stm32.TIM3,
Channels: [4]TimerChannel{
TimerChannel{Pins: []PinFunction{{PA6, AF2_TIM3_4_5}, {PB4, AF2_TIM3_4_5}, {PC6, AF2_TIM3_4_5}}},
TimerChannel{Pins: []PinFunction{{PA7, AF2_TIM3_4_5}, {PB5, AF2_TIM3_4_5}, {PC7, AF2_TIM3_4_5}}},
TimerChannel{Pins: []PinFunction{{PB0, AF2_TIM3_4_5}, {PC8, AF2_TIM3_4_5}}},
TimerChannel{Pins: []PinFunction{{PB1, AF2_TIM3_4_5}, {PC9, AF2_TIM3_4_5}}},
},
busFreq: APB1_TIM_FREQ,
}
TIM4 = TIM{
EnableRegister: &stm32.RCC.APB1ENR,
EnableFlag: stm32.RCC_APB1ENR_TIM4EN,
Device: stm32.TIM4,
Channels: [4]TimerChannel{
TimerChannel{Pins: []PinFunction{{PB6, AF2_TIM3_4_5}, {PD12, AF2_TIM3_4_5}}},
TimerChannel{Pins: []PinFunction{{PB7, AF2_TIM3_4_5}, {PD13, AF2_TIM3_4_5}}},
TimerChannel{Pins: []PinFunction{{PB8, AF2_TIM3_4_5}, {PD14, AF2_TIM3_4_5}}},
TimerChannel{Pins: []PinFunction{{PB9, AF2_TIM3_4_5}, {PD15, AF2_TIM3_4_5}}},
},
busFreq: APB1_TIM_FREQ,
}
TIM5 = TIM{
EnableRegister: &stm32.RCC.APB1ENR,
EnableFlag: stm32.RCC_APB1ENR_TIM5EN,
Device: stm32.TIM5,
Channels: [4]TimerChannel{
TimerChannel{Pins: []PinFunction{{PH10, AF2_TIM3_4_5}}},
TimerChannel{Pins: []PinFunction{{PH11, AF2_TIM3_4_5}}},
TimerChannel{Pins: []PinFunction{{PH12, AF2_TIM3_4_5}}},
TimerChannel{Pins: []PinFunction{{PI0, AF2_TIM3_4_5}}},
},
busFreq: APB1_TIM_FREQ,
}
TIM6 = TIM{
EnableRegister: &stm32.RCC.APB1ENR,
EnableFlag: stm32.RCC_APB1ENR_TIM6EN,
Device: stm32.TIM6,
Channels: [4]TimerChannel{
TimerChannel{Pins: []PinFunction{}},
TimerChannel{Pins: []PinFunction{}},
TimerChannel{Pins: []PinFunction{}},
TimerChannel{Pins: []PinFunction{}},
},
busFreq: APB1_TIM_FREQ,
}
TIM7 = TIM{
EnableRegister: &stm32.RCC.APB1ENR,
EnableFlag: stm32.RCC_APB1ENR_TIM7EN,
Device: stm32.TIM7,
Channels: [4]TimerChannel{
TimerChannel{Pins: []PinFunction{}},
TimerChannel{Pins: []PinFunction{}},
TimerChannel{Pins: []PinFunction{}},
TimerChannel{Pins: []PinFunction{}},
},
busFreq: APB1_TIM_FREQ,
}
TIM8 = TIM{
EnableRegister: &stm32.RCC.APB2ENR,
EnableFlag: stm32.RCC_APB2ENR_TIM8EN,
Device: stm32.TIM8,
Channels: [4]TimerChannel{
TimerChannel{Pins: []PinFunction{{PC6, AF3_TIM8_9_10_11}, {PI5, AF3_TIM8_9_10_11}}},
TimerChannel{Pins: []PinFunction{{PC7, AF3_TIM8_9_10_11}, {PI6, AF3_TIM8_9_10_11}}},
TimerChannel{Pins: []PinFunction{{PC8, AF3_TIM8_9_10_11}, {PI7, AF3_TIM8_9_10_11}}},
TimerChannel{Pins: []PinFunction{{PC9, AF3_TIM8_9_10_11}, {PI2, AF3_TIM8_9_10_11}}},
},
busFreq: APB2_TIM_FREQ,
}
TIM9 = TIM{
EnableRegister: &stm32.RCC.APB2ENR,
EnableFlag: stm32.RCC_APB2ENR_TIM9EN,
Device: stm32.TIM9,
Channels: [4]TimerChannel{
TimerChannel{Pins: []PinFunction{{PA2, AF3_TIM8_9_10_11}, {PE5, AF3_TIM8_9_10_11}}},
TimerChannel{Pins: []PinFunction{{PA3, AF3_TIM8_9_10_11}, {PE6, AF3_TIM8_9_10_11}}},
TimerChannel{Pins: []PinFunction{}},
TimerChannel{Pins: []PinFunction{}},
},
busFreq: APB2_TIM_FREQ,
}
TIM10 = TIM{
EnableRegister: &stm32.RCC.APB2ENR,
EnableFlag: stm32.RCC_APB2ENR_TIM10EN,
Device: stm32.TIM10,
Channels: [4]TimerChannel{
TimerChannel{Pins: []PinFunction{{PB8, AF3_TIM8_9_10_11}, {PF6, AF3_TIM8_9_10_11}}},
TimerChannel{Pins: []PinFunction{}},
TimerChannel{Pins: []PinFunction{}},
TimerChannel{Pins: []PinFunction{}},
},
busFreq: APB2_TIM_FREQ,
}
TIM11 = TIM{
EnableRegister: &stm32.RCC.APB2ENR,
EnableFlag: stm32.RCC_APB2ENR_TIM11EN,
Device: stm32.TIM11,
Channels: [4]TimerChannel{
TimerChannel{Pins: []PinFunction{{PB9, AF3_TIM8_9_10_11}, {PF7, AF3_TIM8_9_10_11}}},
TimerChannel{Pins: []PinFunction{}},
TimerChannel{Pins: []PinFunction{}},
TimerChannel{Pins: []PinFunction{}},
},
busFreq: APB2_TIM_FREQ,
}
TIM12 = TIM{
EnableRegister: &stm32.RCC.APB1ENR,
EnableFlag: stm32.RCC_APB1ENR_TIM12EN,
Device: stm32.TIM12,
Channels: [4]TimerChannel{
TimerChannel{Pins: []PinFunction{{PB14, AF9_CAN1_CAN2_TIM12_13_14}, {PH6, AF9_CAN1_CAN2_TIM12_13_14}}},
TimerChannel{Pins: []PinFunction{{PB15, AF9_CAN1_CAN2_TIM12_13_14}, {PH9, AF9_CAN1_CAN2_TIM12_13_14}}},
TimerChannel{Pins: []PinFunction{}},
TimerChannel{Pins: []PinFunction{}},
},
busFreq: APB1_TIM_FREQ,
}
TIM13 = TIM{
EnableRegister: &stm32.RCC.APB1ENR,
EnableFlag: stm32.RCC_APB1ENR_TIM13EN,
Device: stm32.TIM13,
Channels: [4]TimerChannel{
TimerChannel{Pins: []PinFunction{{PA6, AF9_CAN1_CAN2_TIM12_13_14}, {PF8, AF9_CAN1_CAN2_TIM12_13_14}}},
TimerChannel{Pins: []PinFunction{}},
TimerChannel{Pins: []PinFunction{}},
TimerChannel{Pins: []PinFunction{}},
},
busFreq: APB1_TIM_FREQ,
}
TIM14 = TIM{
EnableRegister: &stm32.RCC.APB1ENR,
EnableFlag: stm32.RCC_APB1ENR_TIM14EN,
Device: stm32.TIM14,
Channels: [4]TimerChannel{
TimerChannel{Pins: []PinFunction{{PA7, AF9_CAN1_CAN2_TIM12_13_14}, {PF9, AF9_CAN1_CAN2_TIM12_13_14}}},
TimerChannel{Pins: []PinFunction{}},
TimerChannel{Pins: []PinFunction{}},
TimerChannel{Pins: []PinFunction{}},
},
busFreq: APB1_TIM_FREQ,
}
)
func (t *TIM) registerUPInterrupt() interrupt.Interrupt {
switch t {
case &TIM1:
return interrupt.New(stm32.IRQ_TIM1_UP_TIM10, TIM1.handleUPInterrupt)
case &TIM2:
return interrupt.New(stm32.IRQ_TIM2, TIM2.handleUPInterrupt)
case &TIM3:
return interrupt.New(stm32.IRQ_TIM3, TIM3.handleUPInterrupt)
case &TIM4:
return interrupt.New(stm32.IRQ_TIM4, TIM4.handleUPInterrupt)
case &TIM5:
return interrupt.New(stm32.IRQ_TIM5, TIM5.handleUPInterrupt)
case &TIM6:
return interrupt.New(stm32.IRQ_TIM6_DAC, TIM6.handleUPInterrupt)
case &TIM7:
return interrupt.New(stm32.IRQ_TIM7, TIM7.handleUPInterrupt)
case &TIM8:
return interrupt.New(stm32.IRQ_TIM8_UP_TIM13, TIM8.handleUPInterrupt)
case &TIM9:
return interrupt.New(stm32.IRQ_TIM1_BRK_TIM9, TIM9.handleUPInterrupt)
case &TIM10:
return interrupt.New(stm32.IRQ_TIM1_UP_TIM10, TIM10.handleUPInterrupt)
case &TIM11:
return interrupt.New(stm32.IRQ_TIM1_TRG_COM_TIM11, TIM11.handleUPInterrupt)
case &TIM12:
return interrupt.New(stm32.IRQ_TIM8_BRK_TIM12, TIM12.handleUPInterrupt)
case &TIM13:
return interrupt.New(stm32.IRQ_TIM8_UP_TIM13, TIM13.handleUPInterrupt)
case &TIM14:
return interrupt.New(stm32.IRQ_TIM8_TRG_COM_TIM14, TIM14.handleUPInterrupt)
}
return interrupt.Interrupt{}
}
func (t *TIM) registerOCInterrupt() interrupt.Interrupt {
switch t {
case &TIM1:
return interrupt.New(stm32.IRQ_TIM1_CC, TIM1.handleOCInterrupt)
case &TIM2:
return interrupt.New(stm32.IRQ_TIM2, TIM2.handleOCInterrupt)
case &TIM3:
return interrupt.New(stm32.IRQ_TIM3, TIM3.handleOCInterrupt)
case &TIM4:
return interrupt.New(stm32.IRQ_TIM4, TIM4.handleOCInterrupt)
case &TIM5:
return interrupt.New(stm32.IRQ_TIM5, TIM5.handleOCInterrupt)
case &TIM6:
return interrupt.New(stm32.IRQ_TIM6_DAC, TIM6.handleOCInterrupt)
case &TIM7:
return interrupt.New(stm32.IRQ_TIM7, TIM7.handleOCInterrupt)
case &TIM8:
return interrupt.New(stm32.IRQ_TIM8_UP_TIM13, TIM8.handleOCInterrupt)
case &TIM9:
return interrupt.New(stm32.IRQ_TIM1_BRK_TIM9, TIM9.handleOCInterrupt)
case &TIM10:
return interrupt.New(stm32.IRQ_TIM1_UP_TIM10, TIM10.handleOCInterrupt)
case &TIM11:
return interrupt.New(stm32.IRQ_TIM1_TRG_COM_TIM11, TIM11.handleOCInterrupt)
case &TIM12:
return interrupt.New(stm32.IRQ_TIM8_BRK_TIM12, TIM12.handleOCInterrupt)
case &TIM13:
return interrupt.New(stm32.IRQ_TIM8_UP_TIM13, TIM13.handleOCInterrupt)
case &TIM14:
return interrupt.New(stm32.IRQ_TIM8_TRG_COM_TIM14, TIM14.handleOCInterrupt)
}
return interrupt.Interrupt{}
}
func (t *TIM) enableMainOutput() {
t.Device.BDTR.SetBits(stm32.TIM_BDTR_MOE)
}
type arrtype = uint32
type arrRegType = volatile.Register32
const (
ARR_MAX = 0x10000
PSC_MAX = 0x10000
)

Просмотреть файл

@ -13,6 +13,12 @@ func CPUFrequency() uint32 {
return 168000000 return 168000000
} }
// Internal use: configured speed of the APB1 and APB2 timers, this should be kept
// in sync with any changes to runtime package which configures the oscillators
// and clock frequencies
const APB1_TIM_FREQ = 42000000 * 2
const APB2_TIM_FREQ = 84000000 * 2
// Alternative peripheral pin functions // Alternative peripheral pin functions
const ( const (
AF0_SYSTEM = 0 AF0_SYSTEM = 0

Просмотреть файл

@ -12,6 +12,12 @@ func CPUFrequency() uint32 {
return 168000000 return 168000000
} }
// Internal use: configured speed of the APB1 and APB2 timers, this should be kept
// in sync with any changes to runtime package which configures the oscillators
// and clock frequencies
const APB1_TIM_FREQ = 42000000 * 2
const APB2_TIM_FREQ = 84000000 * 2
// Alternative peripheral pin functions // Alternative peripheral pin functions
const ( const (
AF0_SYSTEM = 0 AF0_SYSTEM = 0