37fc47a24f
* DWT-based microsecond delay * simple ir app (work only with NEC protocol and predefined address - command) * remove space from file name, add delay_us_init_DWT header * float-based delay us * init tim2 by CubeMX * fix simple pwm functions * simple pwm timer based ir nec protocol * ir gui test app Co-authored-by: aanper <mail@s3f.ru>
69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
/*
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Flipper devices inc.
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GPIO and HAL implementations
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*/
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#include "main.h"
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#include "flipper_hal.h"
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void app_gpio_init(GpioPin gpio, GpioMode mode) {
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if(gpio.pin != 0) {
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GPIO_InitTypeDef GPIO_InitStruct;
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GPIO_InitStruct.Pin = gpio.pin;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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switch(mode) {
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case GpioModeInput:
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GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
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break;
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case GpioModeOutput:
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GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_MEDIUM;
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break;
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case GpioModeOpenDrain:
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GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_OD;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_MEDIUM;
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break;
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}
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HAL_GPIO_Init(gpio.port, &GPIO_InitStruct);
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}
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}
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void delay_us_init_DWT(void) {
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CoreDebug->DEMCR |= CoreDebug_DEMCR_TRCENA_Msk;
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DWT->CTRL |= DWT_CTRL_CYCCNTENA_Msk;
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DWT->CYCCNT = 0U;
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}
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void delay_us(float time) {
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uint32_t start = DWT->CYCCNT;
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uint32_t time_ticks = time * (SystemCoreClock / 1000000);
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while((DWT->CYCCNT - start) < time_ticks) {
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};
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}
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void pwm_set(float value, float freq, TIM_HandleTypeDef* tim, uint32_t channel) {
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tim->Init.CounterMode = TIM_COUNTERMODE_UP;
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tim->Init.Period = (uint32_t)((SystemCoreClock / (tim->Init.Prescaler + 1)) / freq);
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tim->Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
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tim->Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
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HAL_TIM_PWM_Init(tim);
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TIM_OC_InitTypeDef sConfigOC;
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sConfigOC.OCMode = TIM_OCMODE_PWM1;
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sConfigOC.Pulse = (uint16_t)(tim->Init.Period * value);
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sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
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sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
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HAL_TIM_PWM_ConfigChannel(tim, &sConfigOC, channel);
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HAL_TIM_PWM_Start(tim, channel);
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}
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void pwm_stop(TIM_HandleTypeDef* tim, uint32_t channel) {
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HAL_TIM_PWM_Stop(tim, channel);
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} |