三个PWM，相位相差10%

/**

  ******************************************************************************

  * 文件名程: bsp_EmulatorTIM.c 

  * 作    者: 硬石嵌入式开发团队

  * 版    本: V1.0

  * 编写日期: 2015-10-04

  * 功    能: 模拟输出编码器信号

  ******************************************************************************

  * 说明：

  * 本例程配套硬石stm32开发板YS-F1Pro使用。

  * 

  * 淘宝：

  * 论坛：http://www.ing10bbs.com

  * 版权归硬石嵌入式开发团队所有，请勿商用。

  ******************************************************************************

  */

/* 包含头文件 ----------------------------------------------------------------*/

#include "EmulatorTIM/bsp_EmulatorTIM.h"



/* 私有类型定义 --------------------------------------------------------------*/

/* 私有宏定义 ----------------------------------------------------------------*/

/* 私有变量 ------------------------------------------------------------------*/

TIM_HandleTypeDef htimx_emulator;

TIM_OC_InitTypeDef sConfigOC;



/* 扩展变量 ------------------------------------------------------------------*/

/* 私有函数原形 --------------------------------------------------------------*/

/* 函数体 --------------------------------------------------------------------*/

/**

  * 函数功能: 定时器硬件初始化配置

  * 输入参数: htim：定时器句柄类型指针

  * 返 回 值: 无

  * 说    明: 该函数被EMULATOR_TIMx_Init函数调用

  */

void HAL_TIM_MspPostInit(TIM_HandleTypeDef* htim)

{

  GPIO_InitTypeDef GPIO_InitStruct;

  if(htim->Instance==EMULATOR_TIMx)

  {  

    /* 定时器通道功能引脚端口时钟使能 */

    EMULATOR_TIM_GPIO_RCC_CLK_ENABLE();

    

    /* 定时器通道1功能引脚IO初始化 */

    GPIO_InitStruct.Pin = EMULATOR_TIM_CH2_PIN;

    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;

    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;

    HAL_GPIO_Init(EMULATOR_TIM_CH2_PORT, &GPIO_InitStruct);



    /* 定时器通道2功能引脚IO初始化 */

    GPIO_InitStruct.Pin = EMULATOR_TIM_CH3_PIN;

    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;

    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;

    HAL_GPIO_Init(EMULATOR_TIM_CH3_PORT, &GPIO_InitStruct);

    

    /* 定时器通道2功能引脚IO初始化 */

    GPIO_InitStruct.Pin = EMULATOR_TIM_CH4_PIN;

    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;

    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;

    HAL_GPIO_Init(EMULATOR_TIM_CH4_PORT, &GPIO_InitStruct);

  }

}



/**

  * 函数功能: 基本定时器初始化

  * 输入参数: 无

  * 返 回 值: 无

  * 说    明: 无

  */

void EMULATOR_TIMx_Init(void)

{

  TIM_ClockConfigTypeDef sClockSourceConfig;

  

  /* 定时器外设时钟使能 */

  EMULATOR_TIM_RCC_CLK_ENABLE();

  

  htimx_emulator.Instance = EMULATOR_TIMx;

  htimx_emulator.Init.Prescaler = EMULATOR_TIM_PRESCALER;

  htimx_emulator.Init.CounterMode = TIM_COUNTERMODE_UP;

  htimx_emulator.Init.Period = EMULATOR_TIM_PERIOD;

  htimx_emulator.Init.ClockDivision=TIM_CLOCKDIVISION_DIV1;

  HAL_TIM_Base_Init(&htimx_emulator);



  HAL_TIM_OC_Init(&htimx_emulator);  

  

  sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;

  HAL_TIM_ConfigClockSource(&htimx_emulator, &sClockSourceConfig);

  

  sConfigOC.OCMode = TIM_OCMODE_TOGGLE;

  sConfigOC.Pulse = EMULATOR_TIM_PERIOD*1/3;

  sConfigOC.OCPolarity = TIM_OCPOLARITY_LOW;

  sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;

  sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;

  sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;

  HAL_TIM_PWM_ConfigChannel(&htimx_emulator, &sConfigOC, TIM_CHANNEL_2);



  sConfigOC.Pulse = EMULATOR_TIM_PERIOD*3/3;

  HAL_TIM_PWM_ConfigChannel(&htimx_emulator, &sConfigOC, TIM_CHANNEL_3);



  sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;

  sConfigOC.Pulse = EMULATOR_TIM_PERIOD*2/3;

  HAL_TIM_PWM_ConfigChannel(&htimx_emulator, &sConfigOC, TIM_CHANNEL_4);

  

  HAL_TIM_MspPostInit(&htimx_emulator);



}





/**

  * [url=home.php?mod=space&uid=247401]@brief[/url]  Configures a Timer to emulate an encoder sensor outputs in Forward

  *         direction 

  * @param  htim : TIM handle

  * @retval None

  */

void Emulate_Forward_Direction(TIM_HandleTypeDef* htim)

{

  /*## -1- Re-Configure the Pulse  ########################################## */

  sConfigOC.OCPolarity = TIM_OCPOLARITY_LOW;  

  sConfigOC.Pulse = (EMULATOR_TIM_PERIOD * 1 )/3;

  HAL_TIM_OC_ConfigChannel(htim, &sConfigOC, TIM_CHANNEL_2);

  

  sConfigOC.Pulse = (EMULATOR_TIM_PERIOD * 3 )/3;

  HAL_TIM_OC_ConfigChannel(htim, &sConfigOC, TIM_CHANNEL_3);

  

  sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;

  sConfigOC.Pulse = (EMULATOR_TIM_PERIOD * 2 )/3;

  HAL_TIM_OC_ConfigChannel(htim, &sConfigOC, TIM_CHANNEL_4);

  /*## -2- Start signals generation ######################################### */ 

  HAL_TIM_OC_Start(htim, TIM_CHANNEL_2);

  

  HAL_TIM_OC_Start(htim, TIM_CHANNEL_3);

  

  HAL_TIM_OC_Start(htim, TIM_CHANNEL_4);

}



/**

  * @brief  Configures a Timer to emulate an encoder sensor outputs in Backward

  *         direction  

  * @param  htim : TIM handle

  * @retval None

  */

void Emulate_Backward_Direction(TIM_HandleTypeDef* htim)

{

  /*## -1- Re-Configure the Pulse  ########################################## */   

  sConfigOC.Pulse = (EMULATOR_TIM_PERIOD * 2 )/3;

  HAL_TIM_OC_ConfigChannel(htim, &sConfigOC, TIM_CHANNEL_2);

  

  sConfigOC.Pulse = (EMULATOR_TIM_PERIOD * 3 )/3;

  HAL_TIM_OC_ConfigChannel(htim, &sConfigOC, TIM_CHANNEL_3);

  

  sConfigOC.Pulse = (EMULATOR_TIM_PERIOD * 1 )/3;

  HAL_TIM_OC_ConfigChannel(htim, &sConfigOC, TIM_CHANNEL_4);

  /*## -2- Start signals generation ######################################### */ 

  HAL_TIM_OC_Start(htim, TIM_CHANNEL_2);

  

  HAL_TIM_OC_Start(htim, TIM_CHANNEL_3);

  

  HAL_TIM_OC_Start(htim, TIM_CHANNEL_4);

  

}

/******************* (C) COPYRIGHT 2015-2020 硬石嵌入式开发团队 *****END OF FILE****/