PUYA TIM — TIM1_6Step

PUYA PY32F403_Firmware V1.4.5 TIM TIM1_6Step 示例教学

TIM — TIM1_6Step

固件库: PY32L020_Firmware V1.2.1
芯片: PUYA
源文件: PUYA/PY32L020_Firmware_V1.2.1/Projects/PY32L020-STK/Example/TIM/TIM1_6Step/Src/main.c


功能简介

本示例演示定时器 6 步换相功能。这是无刷直流电机(BLDC)驱动的核心技术,通过 6 个功率管按顺序导通实现电机旋转。

完整代码

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#include "main.h"

int main(void)
{
  /* Reset of all peripherals, Initializes the Systick. */ 
  HAL_Init();
      
  TimHandle.Instance = TIM1;                                                      /* TIM1 */
  TimHandle.Init.Period            = 100 - 1;                                     /* Period = 100 - 1 */
  TimHandle.Init.Prescaler         = 24 - 1;                                      /* Prescaler = 24 - 1 */
  TimHandle.Init.ClockDivision     = TIM_CLOCKDIVISION_DIV1;                      /* ClockDivision = 0 */
  TimHandle.Init.CounterMode       = TIM_COUNTERMODE_UP;                          /* Counter direction = Up */
  TimHandle.Init.RepetitionCounter = 1 - 1;                                       /* Repetition = 0 */
  TimHandle.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;              /* Auto-reload register not buffered */
  if (HAL_TIM_Base_Init(&TimHandle) != HAL_OK)                                    /* Initialize TIM1 */
  {
    APP_ErrorHandler();
  }

  /* PWM Config */
  sConfig1.OCMode       = TIM_OCMODE_TIMING;                                      /* Channel Mode: TIMING */
  sConfig1.OCPolarity   = TIM_OCPOLARITY_HIGH;                                    /* Channel effective polarity: high level */
  sConfig1.OCNPolarity  = TIM_OCNPOLARITY_HIGH;                                   /* Complementary channel effective polarity: high level */
  sConfig1.OCIdleState  = TIM_OCIDLESTATE_RESET;                                  /* Channel idle state: low level */
  sConfig1.OCNIdleState = TIM_OCNIDLESTATE_RESET;                                 /* Complementary channel idle state: low level */
  sConfig1.OCFastMode   = TIM_OCFAST_DISABLE;                                     /* Disable OC Fast Mode */
  /* Configure Channel 1 Comparison Value 50 */
  sConfig1.Pulse        = 50 - 1;
  /* Configure TIM1 Channel1 */
  if (HAL_TIM_PWM_ConfigChannel(&TimHandle, &sConfig1, TIM_CHANNEL_1) != HAL_OK)
  {
    APP_ErrorHandler();
  }
  
  sConfig2 = sConfig1;
  /* Configure Channel 2 Comparison Value 50 */
  sConfig2.Pulse        = 50 - 1;
  /* Configure TIM1 Channel2 */
  if (HAL_TIM_PWM_ConfigChannel(&TimHandle, &sConfig2, TIM_CHANNEL_2) != HAL_OK)
  {
    APP_ErrorHandler();
  }
  
  sConfig3 = sConfig1;
  /* Configure Channel 3 Comparison Value 50 */
  sConfig3.Pulse        = 50 - 1;
  /* Configure TIM1 Channel3 */
  if (HAL_TIM_PWM_ConfigChannel(&TimHandle, &sConfig3, TIM_CHANNEL_3) != HAL_OK)
  {
    APP_ErrorHandler();
  }
  
  /* Configuring commutation events: software mode */
  HAL_TIMEx_ConfigCommutEvent_IT(&TimHandle, TIM_TS_NONE, TIM_COMMUTATION_SOFTWARE);
  
  while (1)
  {

  }
}

代码讲解

板级初始化:初始化开发板上的 LED、按键等基础外设。

定时器配置:设置预分频器(PSC)和重装载值(ARR),定时时间 = (PSC+1) × (ARR+1) / 时钟频率。

PWM 配置:在定时器基础上设置比较值(CCR),占空比 = CCR / (ARR+1)。CCR 越大占空比越高。

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