呼吸灯

作者：陈广
日期：2022-1-20

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tim.c代码：

#include "tim.h"
void MX_TIM8_Init(void)
{
  LL_TIM_InitTypeDef TIM_InitStruct = {0};
  LL_TIM_OC_InitTypeDef TIM_OC_InitStruct = {0};
  LL_TIM_BDTR_InitTypeDef TIM_BDTRInitStruct = {0};

  LL_GPIO_InitTypeDef GPIO_InitStruct = {0};
  /* Peripheral clock enable */
  LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_TIM8);
  TIM_InitStruct.Prescaler = 1411;
  TIM_InitStruct.CounterMode = LL_TIM_COUNTERMODE_UP;
  TIM_InitStruct.Autoreload = 254;
  TIM_InitStruct.ClockDivision = LL_TIM_CLOCKDIVISION_DIV1;
  TIM_InitStruct.RepetitionCounter = 0;
  LL_TIM_Init(TIM8, &TIM_InitStruct);
  LL_TIM_DisableARRPreload(TIM8);
  LL_TIM_SetClockSource(TIM8, LL_TIM_CLOCKSOURCE_INTERNAL);
  LL_TIM_OC_EnablePreload(TIM8, LL_TIM_CHANNEL_CH1);
  TIM_OC_InitStruct.OCMode = LL_TIM_OCMODE_PWM1;
  TIM_OC_InitStruct.OCState = LL_TIM_OCSTATE_DISABLE;
  TIM_OC_InitStruct.OCNState = LL_TIM_OCSTATE_DISABLE;
  TIM_OC_InitStruct.CompareValue = 0;
  TIM_OC_InitStruct.OCPolarity = LL_TIM_OCPOLARITY_HIGH;
  TIM_OC_InitStruct.OCNPolarity = LL_TIM_OCPOLARITY_HIGH;
  TIM_OC_InitStruct.OCIdleState = LL_TIM_OCIDLESTATE_LOW;
  TIM_OC_InitStruct.OCNIdleState = LL_TIM_OCIDLESTATE_LOW;
  LL_TIM_OC_Init(TIM8, LL_TIM_CHANNEL_CH1, &TIM_OC_InitStruct);
  LL_TIM_OC_DisableFast(TIM8, LL_TIM_CHANNEL_CH1);
  LL_TIM_OC_EnablePreload(TIM8, LL_TIM_CHANNEL_CH2);
  LL_TIM_OC_Init(TIM8, LL_TIM_CHANNEL_CH2, &TIM_OC_InitStruct);
  LL_TIM_OC_DisableFast(TIM8, LL_TIM_CHANNEL_CH2);
  LL_TIM_OC_EnablePreload(TIM8, LL_TIM_CHANNEL_CH3);
  LL_TIM_OC_Init(TIM8, LL_TIM_CHANNEL_CH3, &TIM_OC_InitStruct);
  LL_TIM_OC_DisableFast(TIM8, LL_TIM_CHANNEL_CH3);
  LL_TIM_SetTriggerOutput(TIM8, LL_TIM_TRGO_RESET);
  LL_TIM_DisableMasterSlaveMode(TIM8);
  TIM_BDTRInitStruct.OSSRState = LL_TIM_OSSR_DISABLE;
  TIM_BDTRInitStruct.OSSIState = LL_TIM_OSSI_DISABLE;
  TIM_BDTRInitStruct.LockLevel = LL_TIM_LOCKLEVEL_OFF;
  TIM_BDTRInitStruct.DeadTime = 0;
  TIM_BDTRInitStruct.BreakState = LL_TIM_BREAK_DISABLE;
  TIM_BDTRInitStruct.BreakPolarity = LL_TIM_BREAK_POLARITY_HIGH;
  TIM_BDTRInitStruct.AutomaticOutput = LL_TIM_AUTOMATICOUTPUT_DISABLE;
  LL_TIM_BDTR_Init(TIM8, &TIM_BDTRInitStruct);
  /* USER CODE BEGIN TIM8_Init 2 */
  LL_TIM_CC_EnableChannel(TIM8, LL_TIM_CHANNEL_CH1);
  LL_TIM_CC_EnableChannel(TIM8, LL_TIM_CHANNEL_CH2);
  LL_TIM_CC_EnableChannel(TIM8, LL_TIM_CHANNEL_CH3);
  LL_TIM_EnableCounter(TIM8);
  LL_TIM_EnableAllOutputs(TIM8);
  /* USER CODE END TIM8_Init 2 */
  LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_GPIOC);
    /**TIM8 GPIO Configuration
    PC6     ------> TIM8_CH1
    PC7     ------> TIM8_CH2
    PC8     ------> TIM8_CH3
    */
  GPIO_InitStruct.Pin = LL_GPIO_PIN_6|LL_GPIO_PIN_7|LL_GPIO_PIN_8;
  GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
  GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_LOW;
  GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
  LL_GPIO_Init(GPIOC, &GPIO_InitStruct);
}

/* USER CODE BEGIN 1 */
void Set_Color(uint8_t red, uint8_t green, uint8_t blue)
{
    LL_TIM_OC_SetCompareCH1(TIM8, blue);
    LL_TIM_OC_SetCompareCH2(TIM8, red);
    LL_TIM_OC_SetCompareCH3(TIM8, green);
}
/* USER CODE END 1 */