/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file    tim.c
  * @brief   This file provides code for the configuration
  *          of the TIM instances.
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2024 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "tim.h"

/* USER CODE BEGIN 0 */
#include "usart.h"
/* USER CODE END 0 */

/* TIM3 init function */
void MX_TIM3_Init(void)
{

  /* USER CODE BEGIN TIM3_Init 0 */

  /* USER CODE END TIM3_Init 0 */

  LL_TIM_InitTypeDef TIM_InitStruct = {0};

  /* Peripheral clock enable */
  LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_TIM3);

  /* TIM3 interrupt Init */
  NVIC_SetPriority(TIM3_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),0, 0));
  NVIC_EnableIRQ(TIM3_IRQn);

  /* USER CODE BEGIN TIM3_Init 1 */

  /* USER CODE END TIM3_Init 1 */
  TIM_InitStruct.Prescaler = 83;
  TIM_InitStruct.CounterMode = LL_TIM_COUNTERMODE_UP;
  TIM_InitStruct.Autoreload = 999;
  TIM_InitStruct.ClockDivision = LL_TIM_CLOCKDIVISION_DIV1;
  LL_TIM_Init(TIM3, &TIM_InitStruct);
  LL_TIM_EnableARRPreload(TIM3);
  LL_TIM_SetClockSource(TIM3, LL_TIM_CLOCKSOURCE_INTERNAL);
  LL_TIM_SetTriggerOutput(TIM3, LL_TIM_TRGO_RESET);
  LL_TIM_DisableMasterSlaveMode(TIM3);
  /* USER CODE BEGIN TIM3_Init 2 */

  /* USER CODE END TIM3_Init 2 */

}
/* TIM4 init function */
void MX_TIM4_Init(void)
{

  /* USER CODE BEGIN TIM4_Init 0 */

  /* USER CODE END TIM4_Init 0 */

  LL_TIM_InitTypeDef TIM_InitStruct = {0};

  LL_GPIO_InitTypeDef GPIO_InitStruct = {0};

  /* Peripheral clock enable */
  LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_TIM4);

  LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_GPIOB);
  /**TIM4 GPIO Configuration
  PB6   ------> TIM4_CH1
  PB7   ------> TIM4_CH2
  PB8   ------> TIM4_CH3
  */
  GPIO_InitStruct.Pin = ENCODER_A_Pin|ENCODER_B_Pin|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;
  GPIO_InitStruct.Pull = LL_GPIO_PULL_NO;
  GPIO_InitStruct.Alternate = LL_GPIO_AF_2;
  LL_GPIO_Init(GPIOB, &GPIO_InitStruct);

  /* USER CODE BEGIN TIM4_Init 1 */

  /* USER CODE END TIM4_Init 1 */
  TIM_InitStruct.Prescaler = 0;
  TIM_InitStruct.CounterMode = LL_TIM_COUNTERMODE_UP;
  TIM_InitStruct.Autoreload = 65535;
  TIM_InitStruct.ClockDivision = LL_TIM_CLOCKDIVISION_DIV1;
  LL_TIM_Init(TIM4, &TIM_InitStruct);
  LL_TIM_DisableARRPreload(TIM4);
  LL_TIM_SetEncoderMode(TIM4, LL_TIM_ENCODERMODE_X4_TI12);
  LL_TIM_IC_SetActiveInput(TIM4, LL_TIM_CHANNEL_CH1, LL_TIM_ACTIVEINPUT_DIRECTTI);
  LL_TIM_IC_SetPrescaler(TIM4, LL_TIM_CHANNEL_CH1, LL_TIM_ICPSC_DIV1);
  LL_TIM_IC_SetFilter(TIM4, LL_TIM_CHANNEL_CH1, LL_TIM_IC_FILTER_FDIV1);
  LL_TIM_IC_SetPolarity(TIM4, LL_TIM_CHANNEL_CH1, LL_TIM_IC_POLARITY_RISING);
  LL_TIM_IC_SetActiveInput(TIM4, LL_TIM_CHANNEL_CH2, LL_TIM_ACTIVEINPUT_DIRECTTI);
  LL_TIM_IC_SetPrescaler(TIM4, LL_TIM_CHANNEL_CH2, LL_TIM_ICPSC_DIV1);
  LL_TIM_IC_SetFilter(TIM4, LL_TIM_CHANNEL_CH2, LL_TIM_IC_FILTER_FDIV1);
  LL_TIM_IC_SetPolarity(TIM4, LL_TIM_CHANNEL_CH2, LL_TIM_IC_POLARITY_RISING);
  LL_TIM_SetTriggerOutput(TIM4, LL_TIM_TRGO_RESET);
  LL_TIM_DisableMasterSlaveMode(TIM4);
  LL_TIM_IC_SetActiveInput(TIM4, LL_TIM_CHANNEL_CH3, LL_TIM_ACTIVEINPUT_DIRECTTI);
  LL_TIM_IC_SetPrescaler(TIM4, LL_TIM_CHANNEL_CH3, LL_TIM_ICPSC_DIV1);
  LL_TIM_IC_SetFilter(TIM4, LL_TIM_CHANNEL_CH3, LL_TIM_IC_FILTER_FDIV1);
  LL_TIM_IC_SetPolarity(TIM4, LL_TIM_CHANNEL_CH3, LL_TIM_IC_POLARITY_RISING);
  /* USER CODE BEGIN TIM4_Init 2 */

  /* USER CODE END TIM4_Init 2 */

}
/* TIM7 init function */
void MX_TIM7_Init(void)
{

  /* USER CODE BEGIN TIM7_Init 0 */

  /* USER CODE END TIM7_Init 0 */

  LL_TIM_InitTypeDef TIM_InitStruct = {0};

  /* Peripheral clock enable */
  LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_TIM7);

  /* TIM7 interrupt Init */
  NVIC_SetPriority(TIM7_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),2, 1));
  NVIC_EnableIRQ(TIM7_IRQn);

  /* USER CODE BEGIN TIM7_Init 1 */

  /* USER CODE END TIM7_Init 1 */
  TIM_InitStruct.Prescaler = 16799;
  TIM_InitStruct.CounterMode = LL_TIM_COUNTERMODE_UP;
  TIM_InitStruct.Autoreload = 39;
  LL_TIM_Init(TIM7, &TIM_InitStruct);
  LL_TIM_EnableARRPreload(TIM7);
  LL_TIM_SetTriggerOutput(TIM7, LL_TIM_TRGO_RESET);
  LL_TIM_DisableMasterSlaveMode(TIM7);
  /* USER CODE BEGIN TIM7_Init 2 */

  /* USER CODE END TIM7_Init 2 */

}

/* USER CODE BEGIN 1 */

void encode_init(void)
{
	LL_TIM_CC_EnableChannel(TIM4,LL_TIM_CHANNEL_CH1);
	LL_TIM_CC_EnableChannel(TIM4,LL_TIM_CHANNEL_CH2);
	
	LL_TIM_EnableCounter(TIM4);
}


/*****************************重写时间回调函数**********************/
void modbus_tim_init(void)
{
	LL_TIM_EnableIT_UPDATE(TIM7);//TIM6更新使能
	LL_TIM_EnableCounter(TIM7);//TIM6计数使能
 
}

void modbus_tim_callback(void)
{
	LL_TIM_ClearFlag_UPDATE(TIM7);	//产生中断证明超过4ms没有接收到数据了，一帧接收完成
	LL_TIM_DisableCounter(TIM7);		//中断之后停止定时器，开启在下一次接收到数据开始
	usart3.rx_size = usart3.rx_buf_cnt;	//将接收到数据数量赋值
	usart3.rx_buf_cnt = 0;				//清零
	usart3.rx_flag = 1;					//接收完成，置1
	//485通信
	if(usart3.rx_flag == 1)	//如果一帧数据接收完成，其在tim7的回调函数置位
	{
		Modbus_Process();
		usart3.rx_flag=0;		//接收完成标志位清零
	}
}

/* USER CODE END 1 */