mirror of
https://github.com/IcedRooibos/py32f0-template.git
synced 2025-10-30 17:32:05 -07:00
98 lines
2.6 KiB
C
98 lines
2.6 KiB
C
/***
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* Demo: TIM1 PWM output
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*
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*/
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#include "main.h"
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#include "py32f0xx_bsp_printf.h"
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uint32_t TIM1ReloadCounter[9] = {900-1,800-1,700-1,600-1,500-1,400-1,300-1,200-1,100-1};
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static void APP_SystemClockConfig(void);
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static void APP_TIM1Config(void);
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static void APP_PWMChannelConfig(void);
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int main(void)
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{
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APP_SystemClockConfig();
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BSP_USART_Config(115200);
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printf("TIM1 PWM Demo\r\nClock: %ld\r\n", SystemCoreClock);
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APP_TIM1Config();
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APP_PWMChannelConfig();
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while (1);
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}
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static void APP_PWMChannelConfig(void)
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{
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LL_GPIO_InitTypeDef TIM1CH1MapInit = {0};
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LL_TIM_OC_InitTypeDef TIM_OC_Initstruct = {0};
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LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOA);
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/* PA8/PA9/PA10 -> TIM1_CH1N/TIM1_CH1/TIM1_CH2/TIM1_CH3 */
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TIM1CH1MapInit.Pin = LL_GPIO_PIN_8 | LL_GPIO_PIN_9 | LL_GPIO_PIN_10;
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TIM1CH1MapInit.Mode = LL_GPIO_MODE_ALTERNATE;
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TIM1CH1MapInit.Alternate = LL_GPIO_AF_2;
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LL_GPIO_Init(GPIOA, &TIM1CH1MapInit);
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TIM_OC_Initstruct.OCMode = LL_TIM_OCMODE_PWM2;
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TIM_OC_Initstruct.OCState = LL_TIM_OCSTATE_ENABLE;
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TIM_OC_Initstruct.OCPolarity = LL_TIM_OCPOLARITY_HIGH;
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TIM_OC_Initstruct.OCIdleState = LL_TIM_OCIDLESTATE_LOW;
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/* Set channel compare values */
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TIM_OC_Initstruct.CompareValue = 250;
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LL_TIM_OC_Init(TIM1, LL_TIM_CHANNEL_CH1, &TIM_OC_Initstruct);
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TIM_OC_Initstruct.CompareValue = 500;
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LL_TIM_OC_Init(TIM1, LL_TIM_CHANNEL_CH2, &TIM_OC_Initstruct);
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TIM_OC_Initstruct.CompareValue = 750;
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LL_TIM_OC_Init(TIM1, LL_TIM_CHANNEL_CH3, &TIM_OC_Initstruct);
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}
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static void APP_TIM1Config(void)
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{
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LL_TIM_InitTypeDef TIM1CountInit = {0};
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LL_APB1_GRP2_EnableClock(LL_APB1_GRP2_PERIPH_TIM1);
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TIM1CountInit.ClockDivision = LL_TIM_CLOCKDIVISION_DIV1;
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TIM1CountInit.CounterMode = LL_TIM_COUNTERMODE_UP;
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TIM1CountInit.Prescaler = 2400-1;
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/* PWM period = 1000 */
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TIM1CountInit.Autoreload = 1000-1;
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TIM1CountInit.RepetitionCounter = 0;
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LL_TIM_Init(TIM1,&TIM1CountInit);
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LL_TIM_EnableAllOutputs(TIM1);
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LL_TIM_EnableCounter(TIM1);
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}
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static void APP_SystemClockConfig(void)
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{
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LL_RCC_HSI_Enable();
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LL_RCC_HSI_SetCalibFreq(LL_RCC_HSICALIBRATION_24MHz);
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while (LL_RCC_HSI_IsReady() != 1);
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LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1);
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LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_1);
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LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_HSISYS);
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while (LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_HSISYS);
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LL_Init1msTick(24000000);
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LL_SetSystemCoreClock(24000000);
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}
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void APP_TIM1UpdateCallback(void)
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{
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LL_GPIO_TogglePin(GPIOB, LL_GPIO_PIN_5);
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}
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void APP_ErrorHandler(void)
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{
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while (1);
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}
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