stm32l4: add pwm
Этот коммит содержится в:
Kenneth Bell
Ron Evans
родитель
3145c2747e
коммит
c43a41165a
4 изменённых файлов: 212 добавлений и 1 удалений
11
src/examples/pwm/nucleo-l432kc.go
Обычный файл
11
src/examples/pwm/nucleo-l432kc.go
Обычный файл
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@ -0,0 +1,11 @@
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// +build stm32l4
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package main
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import "machine"
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var (
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pwm = &machine.TIM2
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pinA = machine.PA0
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pinB = machine.PB3
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)
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@ -1,4 +1,4 @@
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// +build stm32f4 stm32l5 stm32l0
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// +build stm32f4 stm32l5 stm32l0 stm32l4
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package machine
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@ -4,11 +4,31 @@ package machine
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import (
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"device/stm32"
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"runtime/interrupt"
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"runtime/volatile"
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"unsafe"
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)
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// Peripheral abstraction layer for the stm32l4
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const (
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AF0_SYSTEM = 0
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AF1_TIM1_2_LPTIM1 = 1
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AF2_TIM1_2 = 2
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AF3_USART2 = 3
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AF4_I2C1_2_3 = 4
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AF5_SPI1_2 = 5
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AF6_SPI3 = 6
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AF7_USART1_2_3 = 7
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AF8_LPUART1 = 8
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AF9_CAN1_TSC = 9
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AF10_USB_QUADSPI = 10
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AF12_COMP1_2_SWPMI1 = 12
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AF13_SAI1 = 13
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AF14_TIM2_15_16_LPTIM2 = 14
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AF15_EVENTOUT = 15
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)
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const (
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PA0 = portA + 0
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PA1 = portA + 1
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@ -246,3 +266,177 @@ func (spi SPI) configurePins(config SPIConfig) {
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config.SDO.ConfigureAltFunc(PinConfig{Mode: PinModeSPISDO}, spi.AltFuncSelector)
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config.SDI.ConfigureAltFunc(PinConfig{Mode: PinModeSPISDI}, spi.AltFuncSelector)
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}
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//---------- Timer related code
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var (
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TIM1 = TIM{
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EnableRegister: &stm32.RCC.APB2ENR,
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EnableFlag: stm32.RCC_APB2ENR_TIM1EN,
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Device: stm32.TIM1,
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Channels: [4]TimerChannel{
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TimerChannel{Pins: []PinFunction{
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{PA8, AF1_TIM1_2_LPTIM1},
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}},
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TimerChannel{Pins: []PinFunction{
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{PA9, AF1_TIM1_2_LPTIM1},
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}},
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TimerChannel{Pins: []PinFunction{
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{PA10, AF1_TIM1_2_LPTIM1},
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}},
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TimerChannel{Pins: []PinFunction{
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{PA11, AF1_TIM1_2_LPTIM1},
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}},
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},
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busFreq: APB2_TIM_FREQ,
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}
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TIM2 = TIM{
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EnableRegister: &stm32.RCC.APB1ENR1,
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EnableFlag: stm32.RCC_APB1ENR1_TIM2EN,
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Device: stm32.TIM2,
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Channels: [4]TimerChannel{
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TimerChannel{Pins: []PinFunction{
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{PA0, AF1_TIM1_2_LPTIM1},
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{PA5, AF1_TIM1_2_LPTIM1},
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{PA15, AF1_TIM1_2_LPTIM1},
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}},
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TimerChannel{Pins: []PinFunction{
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{PA1, AF1_TIM1_2_LPTIM1},
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{PB3, AF1_TIM1_2_LPTIM1},
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}},
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TimerChannel{Pins: []PinFunction{
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{PA2, AF1_TIM1_2_LPTIM1},
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}},
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TimerChannel{Pins: []PinFunction{
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{PA3, AF1_TIM1_2_LPTIM1},
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}},
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},
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busFreq: APB1_TIM_FREQ,
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}
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TIM3 = TIM{
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EnableRegister: &stm32.RCC.APB1ENR1,
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EnableFlag: stm32.RCC_APB1ENR1_TIM3EN,
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Device: stm32.TIM3,
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Channels: [4]TimerChannel{
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TimerChannel{Pins: []PinFunction{}},
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TimerChannel{Pins: []PinFunction{}},
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TimerChannel{Pins: []PinFunction{}},
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TimerChannel{Pins: []PinFunction{}},
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},
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busFreq: APB1_TIM_FREQ,
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}
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TIM6 = TIM{
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EnableRegister: &stm32.RCC.APB1ENR1,
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EnableFlag: stm32.RCC_APB1ENR1_TIM6EN,
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Device: stm32.TIM6,
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Channels: [4]TimerChannel{
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TimerChannel{Pins: []PinFunction{}},
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TimerChannel{Pins: []PinFunction{}},
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TimerChannel{Pins: []PinFunction{}},
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TimerChannel{Pins: []PinFunction{}},
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},
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busFreq: APB1_TIM_FREQ,
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}
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TIM7 = TIM{
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EnableRegister: &stm32.RCC.APB1ENR1,
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EnableFlag: stm32.RCC_APB1ENR1_TIM7EN,
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Device: stm32.TIM7,
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Channels: [4]TimerChannel{
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TimerChannel{Pins: []PinFunction{}},
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TimerChannel{Pins: []PinFunction{}},
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TimerChannel{Pins: []PinFunction{}},
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TimerChannel{Pins: []PinFunction{}},
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},
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busFreq: APB1_TIM_FREQ,
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}
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TIM15 = TIM{
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EnableRegister: &stm32.RCC.APB2ENR,
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EnableFlag: stm32.RCC_APB2ENR_TIM15EN,
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Device: stm32.TIM15,
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Channels: [4]TimerChannel{
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TimerChannel{Pins: []PinFunction{
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{PA2, AF14_TIM2_15_16_LPTIM2},
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}},
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TimerChannel{Pins: []PinFunction{
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{PA3, AF14_TIM2_15_16_LPTIM2},
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}},
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TimerChannel{Pins: []PinFunction{}},
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TimerChannel{Pins: []PinFunction{}},
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},
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busFreq: APB2_TIM_FREQ,
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}
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TIM16 = TIM{
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EnableRegister: &stm32.RCC.APB2ENR,
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EnableFlag: stm32.RCC_APB2ENR_TIM16EN,
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Device: stm32.TIM16,
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Channels: [4]TimerChannel{
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TimerChannel{Pins: []PinFunction{
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{PA6, AF14_TIM2_15_16_LPTIM2},
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}},
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TimerChannel{Pins: []PinFunction{}},
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TimerChannel{Pins: []PinFunction{}},
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TimerChannel{Pins: []PinFunction{}},
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},
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busFreq: APB2_TIM_FREQ,
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}
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)
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func (t *TIM) registerUPInterrupt() interrupt.Interrupt {
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switch t {
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case &TIM1:
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return interrupt.New(stm32.IRQ_TIM1_UP_TIM16, TIM1.handleUPInterrupt)
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case &TIM2:
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return interrupt.New(stm32.IRQ_TIM2, TIM2.handleUPInterrupt)
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case &TIM3:
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return interrupt.New(stm32.IRQ_TIM3, TIM3.handleUPInterrupt)
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case &TIM6:
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return interrupt.New(stm32.IRQ_TIM6_DACUNDER, TIM6.handleUPInterrupt)
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case &TIM7:
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return interrupt.New(stm32.IRQ_TIM7, TIM7.handleUPInterrupt)
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case &TIM15:
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return interrupt.New(stm32.IRQ_TIM1_BRK_TIM15, TIM15.handleUPInterrupt)
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case &TIM16:
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return interrupt.New(stm32.IRQ_TIM1_UP_TIM16, TIM16.handleUPInterrupt)
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}
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return interrupt.Interrupt{}
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}
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func (t *TIM) registerOCInterrupt() interrupt.Interrupt {
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switch t {
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case &TIM1:
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return interrupt.New(stm32.IRQ_TIM1_CC, TIM1.handleUPInterrupt)
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case &TIM2:
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return interrupt.New(stm32.IRQ_TIM2, TIM2.handleOCInterrupt)
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case &TIM3:
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return interrupt.New(stm32.IRQ_TIM3, TIM3.handleOCInterrupt)
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case &TIM6:
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return interrupt.New(stm32.IRQ_TIM6_DACUNDER, TIM6.handleOCInterrupt)
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case &TIM7:
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return interrupt.New(stm32.IRQ_TIM7, TIM7.handleOCInterrupt)
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case &TIM15:
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return interrupt.New(stm32.IRQ_TIM1_BRK_TIM15, TIM15.handleOCInterrupt)
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case &TIM16:
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return interrupt.New(stm32.IRQ_TIM1_UP_TIM16, TIM16.handleOCInterrupt)
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}
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return interrupt.Interrupt{}
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}
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func (t *TIM) enableMainOutput() {
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// nothing to do - no BDTR register
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}
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type arrtype = uint32
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type arrRegType = volatile.Register32
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const (
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ARR_MAX = 0x10000
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PSC_MAX = 0x10000
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)
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@ -12,6 +12,12 @@ func CPUFrequency() uint32 {
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return 80000000
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}
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// Internal use: configured speed of the APB1 and APB2 timers, this should be kept
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// in sync with any changes to runtime package which configures the oscillators
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// and clock frequencies
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const APB1_TIM_FREQ = 80e6 // 80MHz
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const APB2_TIM_FREQ = 80e6 // 80MHz
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//---------- UART related code
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// Configure the UART.
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