unleashed-firmware/firmware/targets/f7/furi_hal/furi_hal_pwm.c
MMX ee96e34767
Fix furi_hal_bus related crashes in plugins ()
* Fix furi_hal_bus issues in plugins
* Rework pwm is running check
* ApiSymbols: update and sync targets

Co-authored-by: あく <alleteam@gmail.com>
2023-06-28 18:25:07 +09:00

138 lines
4.5 KiB
C

#include <furi_hal_pwm.h>
#include <furi_hal_resources.h>
#include <furi_hal_bus.h>
#include <stm32wbxx_ll_tim.h>
#include <stm32wbxx_ll_lptim.h>
#include <stm32wbxx_ll_rcc.h>
#include <furi.h>
const uint32_t lptim_psc_table[] = {
LL_LPTIM_PRESCALER_DIV1,
LL_LPTIM_PRESCALER_DIV2,
LL_LPTIM_PRESCALER_DIV4,
LL_LPTIM_PRESCALER_DIV8,
LL_LPTIM_PRESCALER_DIV16,
LL_LPTIM_PRESCALER_DIV32,
LL_LPTIM_PRESCALER_DIV64,
LL_LPTIM_PRESCALER_DIV128,
};
void furi_hal_pwm_start(FuriHalPwmOutputId channel, uint32_t freq, uint8_t duty) {
if(channel == FuriHalPwmOutputIdTim1PA7) {
furi_hal_gpio_init_ex(
&gpio_ext_pa7,
GpioModeAltFunctionPushPull,
GpioPullNo,
GpioSpeedVeryHigh,
GpioAltFn1TIM1);
furi_hal_bus_enable(FuriHalBusTIM1);
LL_TIM_SetCounterMode(TIM1, LL_TIM_COUNTERMODE_UP);
LL_TIM_SetRepetitionCounter(TIM1, 0);
LL_TIM_SetClockDivision(TIM1, LL_TIM_CLOCKDIVISION_DIV1);
LL_TIM_SetClockSource(TIM1, LL_TIM_CLOCKSOURCE_INTERNAL);
LL_TIM_EnableARRPreload(TIM1);
LL_TIM_OC_EnablePreload(TIM1, LL_TIM_CHANNEL_CH1);
LL_TIM_OC_SetMode(TIM1, LL_TIM_CHANNEL_CH1, LL_TIM_OCMODE_PWM1);
LL_TIM_OC_SetPolarity(TIM1, LL_TIM_CHANNEL_CH1N, LL_TIM_OCPOLARITY_HIGH);
LL_TIM_OC_DisableFast(TIM1, LL_TIM_CHANNEL_CH1);
LL_TIM_CC_EnableChannel(TIM1, LL_TIM_CHANNEL_CH1N);
LL_TIM_EnableAllOutputs(TIM1);
furi_hal_pwm_set_params(channel, freq, duty);
LL_TIM_EnableCounter(TIM1);
} else if(channel == FuriHalPwmOutputIdLptim2PA4) {
furi_hal_gpio_init_ex(
&gpio_ext_pa4,
GpioModeAltFunctionPushPull,
GpioPullNo,
GpioSpeedVeryHigh,
GpioAltFn14LPTIM2);
furi_hal_bus_enable(FuriHalBusLPTIM2);
LL_LPTIM_SetUpdateMode(LPTIM2, LL_LPTIM_UPDATE_MODE_ENDOFPERIOD);
LL_RCC_SetLPTIMClockSource(LL_RCC_LPTIM2_CLKSOURCE_PCLK1);
LL_LPTIM_SetClockSource(LPTIM2, LL_LPTIM_CLK_SOURCE_INTERNAL);
LL_LPTIM_ConfigOutput(
LPTIM2, LL_LPTIM_OUTPUT_WAVEFORM_PWM, LL_LPTIM_OUTPUT_POLARITY_INVERSE);
LL_LPTIM_SetCounterMode(LPTIM2, LL_LPTIM_COUNTER_MODE_INTERNAL);
LL_LPTIM_Enable(LPTIM2);
furi_hal_pwm_set_params(channel, freq, duty);
LL_LPTIM_StartCounter(LPTIM2, LL_LPTIM_OPERATING_MODE_CONTINUOUS);
}
}
void furi_hal_pwm_stop(FuriHalPwmOutputId channel) {
if(channel == FuriHalPwmOutputIdTim1PA7) {
furi_hal_gpio_init_simple(&gpio_ext_pa7, GpioModeAnalog);
furi_hal_bus_disable(FuriHalBusTIM1);
} else if(channel == FuriHalPwmOutputIdLptim2PA4) {
furi_hal_gpio_init_simple(&gpio_ext_pa4, GpioModeAnalog);
furi_hal_bus_disable(FuriHalBusLPTIM2);
}
}
bool furi_hal_pwm_is_running(FuriHalPwmOutputId channel) {
if(channel == FuriHalPwmOutputIdTim1PA7) {
return furi_hal_bus_is_enabled(FuriHalBusTIM1);
} else if(channel == FuriHalPwmOutputIdLptim2PA4) {
return furi_hal_bus_is_enabled(FuriHalBusLPTIM2);
}
return false;
}
void furi_hal_pwm_set_params(FuriHalPwmOutputId channel, uint32_t freq, uint8_t duty) {
furi_assert(freq > 0);
uint32_t freq_div = 64000000LU / freq;
if(channel == FuriHalPwmOutputIdTim1PA7) {
uint32_t prescaler = freq_div / 0x10000LU;
uint32_t period = freq_div / (prescaler + 1);
uint32_t compare = period * duty / 100;
LL_TIM_SetPrescaler(TIM1, prescaler);
LL_TIM_SetAutoReload(TIM1, period - 1);
LL_TIM_OC_SetCompareCH1(TIM1, compare);
} else if(channel == FuriHalPwmOutputIdLptim2PA4) {
uint32_t prescaler = 0;
uint32_t period = 0;
bool clock_lse = false;
do {
period = freq_div / (1UL << prescaler);
if(period <= 0xFFFF) {
break;
}
prescaler++;
if(prescaler > 7) {
prescaler = 0;
clock_lse = true;
period = 32768LU / freq;
break;
}
} while(1);
uint32_t compare = period * duty / 100;
LL_LPTIM_SetPrescaler(LPTIM2, lptim_psc_table[prescaler]);
LL_LPTIM_SetAutoReload(LPTIM2, period);
LL_LPTIM_SetCompare(LPTIM2, compare);
if(clock_lse) {
LL_RCC_SetLPTIMClockSource(LL_RCC_LPTIM2_CLKSOURCE_LSE);
} else {
LL_RCC_SetLPTIMClockSource(LL_RCC_LPTIM2_CLKSOURCE_PCLK1);
}
}
}