/**
  ******************************************************************************
  * @file    main.c
  * @author  MCU Application Team
  * @brief   Main program body
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2023 Puya Semiconductor Co.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by Puya under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */
/* Includes ------------------------------------------------------------------*/
#include "main.h"

/* Private define ------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
ADC_HandleTypeDef             AdcHandle;
ADC_ChannelConfTypeDef        sConfig;
uint32_t                      aADCxConvertedData = 0;
TIM_HandleTypeDef             TimHandle;
TIM_MasterConfigTypeDef       sMasterConfig;

/* Private user code ---------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
static void APP_TimerInit(void);
static void APP_AdcConfig(void);

/**
  * @brief  Main program.
  * @retval int
  */
int main(void)
{
  /* Reset of all peripherals, Initializes the Systick */
  HAL_Init();                                                                     
  
  /* Initialize LED */
  BSP_LED_Init(LED_GREEN); 
  
  /* Initialize UART */
  DEBUG_USART_Config();                                                           
  
  /* InitializeTimer */
  APP_TimerInit();      
  
  /* Configure ADC */
  APP_AdcConfig();                                                                
  
  while (1)
  {
    /* DMA channel 1 transfer completed */
    if (__HAL_DMA_GET_FLAG(DMA1, DMA_ISR_TCIF1))                                  
    {
      /* Clear DMA channel 1 transfer complete flag */
      __HAL_DMA_CLEAR_FLAG(DMA1, DMA_IFCR_CTCIF1);                                
      printf("ADC: %u \r\n", (unsigned int)aADCxConvertedData);
    }
  }
}

/**
  * @brief  ADC configuration function
  * @param  None
  * @retval None
  */
static void APP_AdcConfig(void)
{
  __HAL_RCC_ADC_FORCE_RESET();
  __HAL_RCC_ADC_RELEASE_RESET();                                                  /* Reset ADC */
  __HAL_RCC_ADC_CLK_ENABLE();                                                     /* Enable ADC clock */

  AdcHandle.Instance = ADC1;

  /* ADC calibration */
  if (HAL_ADCEx_Calibration_Start(&AdcHandle) != HAL_OK)                          
  {
    APP_ErrorHandler();
  }
  
  AdcHandle.Instance                   = ADC1;                                    /* ADC1 */
  AdcHandle.Init.ClockPrescaler        = ADC_CLOCK_SYNC_PCLK_DIV4;                /* Set ADC clock */
  AdcHandle.Init.Resolution            = ADC_RESOLUTION_12B;                      /* 12-bit resolution for converted data */
  AdcHandle.Init.DataAlign             = ADC_DATAALIGN_RIGHT;                     /* Right-alignment for converted data */
  AdcHandle.Init.ScanConvMode          = ADC_SCAN_DIRECTION_BACKWARD;             /* Scan sequence direction: backward */
  AdcHandle.Init.LowPowerAutoWait      = ENABLE;                                  /* Enable wait for conversion mode */
  AdcHandle.Init.ContinuousConvMode    = DISABLE;                                 /* Single conversion mode */
  AdcHandle.Init.DiscontinuousConvMode = DISABLE;                                 /* Disable discontinuous mode */
  AdcHandle.Init.ExternalTrigConv      = ADC_EXTERNALTRIGCONV_T1_TRGO;            /* Set the external trigger for conversion start event to TIM1_TRGO */
  AdcHandle.Init.ExternalTrigConvEdge  = ADC_EXTERNALTRIGCONVEDGE_RISING;         /* Trigger on rising edges */
  AdcHandle.Init.DMAContinuousRequests = ENABLE;                                  /* DMA continuous mode selection */
  AdcHandle.Init.Overrun               = ADC_OVR_DATA_OVERWRITTEN;                /* When an overload occurs, overwrite the previous value */
  AdcHandle.Init.SamplingTimeCommon    = ADC_SAMPLETIME_239CYCLES_5;              /* The channel sampling time is 239.5 ADC clock cycles */
  /* ADC initialization */
  if (HAL_ADC_Init(&AdcHandle) != HAL_OK)
  {
    APP_ErrorHandler();
  }

  sConfig.Rank         = ADC_RANK_CHANNEL_NUMBER;
  sConfig.Channel      = ADC_CHANNEL_0;
  /* Channel 0 configuration */
  if (HAL_ADC_ConfigChannel(&AdcHandle, &sConfig) != HAL_OK)                     
  {
    APP_ErrorHandler();
  }
  /* Start ADC */
  if (HAL_ADC_Start_DMA(&AdcHandle, &aADCxConvertedData, 1) != HAL_OK)            
  {
    APP_ErrorHandler();
  }
}

/**
  * @brief  TIM configuration function
  * @param  None
  * @retval None
  */
static void APP_TimerInit(void)
{
  __HAL_RCC_TIM1_CLK_ENABLE();                                        /* Enable TIM1 clock */
  TimHandle.Instance = TIM1;                                          /* TIM1 */
  TimHandle.Init.Period            = 8000 - 1;                        /* TIM1 reload value */
  TimHandle.Init.Prescaler         = 1000 - 1;                        /* Prescaler value */
  TimHandle.Init.ClockDivision     = TIM_CLOCKDIVISION_DIV1;          /* No clock division */
  TimHandle.Init.CounterMode       = TIM_COUNTERMODE_UP;              /* Up-counting mode */
  TimHandle.Init.RepetitionCounter = 0;                               /* No repetition */
  TimHandle.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;  /* Auto-reload register not buffered */
  /* Initialize TIM1 */
  if (HAL_TIM_Base_Init(&TimHandle) != HAL_OK)                        
  {
    APP_ErrorHandler();
  }

  sMasterConfig.MasterOutputTrigger = TIM_TRGO_UPDATE;                /* Select update event as trigger source */
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;        /* No effect in master/slave mode */
  HAL_TIMEx_MasterConfigSynchronization(&TimHandle, &sMasterConfig);  /* Configure TIM1 */
  /* Start TIM1 clock */
  if (HAL_TIM_Base_Start(&TimHandle) != HAL_OK)                       
  {
    APP_ErrorHandler();
  }
}

/**
  * @brief  This function is executed in case of error occurrence.
  * @param  None
  * @retval None
  */
void APP_ErrorHandler(void)
{
  while (1)
  {
  }
}
#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* User can add his own implementation to report the file name and line number,
     for example: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* Infinite loop */
  while (1)
  {
  }
}
#endif /* USE_FULL_ASSERT */

/************************ (C) COPYRIGHT Puya *****END OF FILE******************/
