#include "main.h"
#include "stm32f1xx_it.h"


/* USER CODE BEGIN EV */
extern UART_HandleTypeDef huart1;
uint8_t END_MSG[50] = "Overflow Reached!! Counter Reset!!\n\r";
/* USER CODE END EV */

/**
  * @brief This function handles TIM1 update interrupt.
  */
void TIM1_UP_IRQHandler(void)
{
  /* USER CODE BEGIN TIM1_UP_IRQn 0 */
HAL_UART_Transmit(&huart1, END_MSG, sizeof(END_MSG), 100);
  /* USER CODE END TIM1_UP_IRQn 0 */
  HAL_TIM_IRQHandler(&htim1);
  /* USER CODE BEGIN TIM1_UP_IRQn 1 */

  /* USER CODE END TIM1_UP_IRQn 1 */
}

/**
  * @brief This function handles TIM3 global interrupt.
  */
void TIM3_IRQHandler(void)
{
  /* USER CODE BEGIN TIM3_IRQn 0 */
  HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_3);
  /* USER CODE END TIM3_IRQn 0 */
  HAL_TIM_IRQHandler(&htim3);
  /* USER CODE BEGIN TIM3_IRQn 1 */

  /* USER CODE END TIM3_IRQn 1 */
}

/* USER CODE BEGIN 1 */

#include "main.h"
#include"stdio.h"

int main(void)
{
uint8_t MSG[10] = {'\0'};
uint8_t CounterTicks;

  HAL_Init();
  SystemClock_Config();
  MX_GPIO_Init();
  MX_TIM1_Init();
  MX_TIM2_Init();
  MX_TIM3_Init();
  MX_USART1_UART_Init();

  while (1)
  { 
//Timer Periodic Interrupt Mode
 if(HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_0)== GPIO_PIN_SET)
    {
      HAL_TIM_Base_Start_IT(&htim3);
    }
    //Timer Counter Mode
    else if(HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_1)==GPIO_PIN_SET)
    {
      HAL_TIM_Base_Start_IT(&htim1);
      CounterTicks = TIM1->CNT;
      sprintf(&MSG,"Ticks = %d  ",CounterTicks);
      HAL_UART_Transmit(&huart1, MSG, sizeof(MSG), 100);
      HAL_UART_Transmit(&huart1, (uint8_t*)&"\n\r", 2, 2);
      HAL_Delay(200);
    }
    else if (HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_2)==GPIO_PIN_SET)
    {
      HAL_TIM_OC_Start(&htim2, TIM_CHANNEL_2);
      HAL_TIM_OC_Start(&htim2, TIM_CHANNEL_4);
    }
    else
    {
      HAL_TIM_Base_Stop(&htim3);
      HAL_TIM_Base_Stop(&htim1);
      HAL_TIM_OC_Stop(&htim2, TIM_CHANNEL_2);
      HAL_TIM_OC_Stop(&htim2, TIM_CHANNEL_4);
    }
  }
}