/**
  ******************************************************************************
  * @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        hADC1;
uint16_t                 uhADCxConvertedData[2];

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

/**
  * @brief  Main program.
  * @retval int
  */
int main(void)
{
  /* Reset of all peripherals, Initializes the Systick. */
  HAL_Init();
  
  /* Configure system clock */
  APP_SystemClockConfig(); 

  /* Initialize LED */
  BSP_LED_Init(LED_GREEN);
  
  /* Initialize UART */
  BSP_UART_Config();

  /* Configure ADC */
  APP_AdcConfig();
   
  /* ADC Calibrate */   
  if (HAL_ADCEx_Calibration_Start(&hADC1, ADC_CALIBRATION_NUMBER_1) != HAL_OK)
  {
    APP_ErrorHandler();
  }
  
  /* Infinite loop */
  while (1)
  {
    HAL_ADC_Start_DMA(&hADC1, (uint32_t*)uhADCxConvertedData, 2);
    BSP_LED_Toggle(LED_GREEN);
    while(HAL_DMA_GetState(hADC1.DMA_Handle) != HAL_DMA_STATE_READY);
    
    HAL_Delay(1000);
  }
}

/**
  * @brief  Conversion complete callback in non-blocking mode.
  * @param  hadc ADC handle
  * @retval None
  */
void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef *hadc)
{
  printf("Ch10(PA5): %umV   Ch11(PA6): %umV \r\n", 
        (unsigned int)uhADCxConvertedData[0] * 3300 / 4096, 
        (unsigned int)uhADCxConvertedData[1] * 3300 / 4096);
}

/**
  * @brief  ADC Configuration
  * @param  None
  * @retval None
  */
static void APP_AdcConfig(void)
{
  ADC_ChannelConfTypeDef   sConfig = {0};
  
  hADC1.Instance = ADC1;
  
  hADC1.Init.Resolution            = ADC_RESOLUTION_12B;               /* 12-bit resolution for converted data  */
  hADC1.Init.DataAlign             = ADC_DATAALIGN_RIGHT;              /* Right-alignment for converted data */
  hADC1.Init.GainCompensation      = 0;                                /* Gain compensation disabled */
  hADC1.Init.ScanConvMode          = ADC_SCAN_ENABLE;                  /* Scan Mode enable */
  hADC1.Init.EOCSelection          = ADC_EOC_SEQ_CONV;                 /* End of sequence conversions flag */ 
  hADC1.Init.LowPowerAutoWait      = DISABLE;                          /* Low power mode disable */
  hADC1.Init.ContinuousConvMode    = DISABLE;                          /* Single Conversion  */
  hADC1.Init.NbrOfConversion       = 2;                                /* Conversion Number */
  hADC1.Init.DiscontinuousConvMode = DISABLE;                          /* Discontinuous Mode Disable */
  /* hADC1.Init.NbrOfDiscConversion   = 1; */                          /* Discontinuous Conversion Number */
  hADC1.Init.ExternalTrigConv      = ADC_SOFTWARE_START;               /* SW Trigger */
  /* hADC1.Init.ExternalTrigConvEdge  = ADC_EXTERNALTRIGCONVEDGE_RISING; */  /* Rising edge trigger */
  hADC1.Init.OversamplingMode      = DISABLE;                          /* Oversampling disable */
  /* hADC1.Init.Oversampling.Ratio    = ADC_OVERSAMPLING_RATIO_16;                     */
  /* hADC1.Init.Oversampling.RightBitShift = ADC_RIGHTBITSHIFT_4;                      */
  /* hADC1.Init.Oversampling.TriggeredMode = ADC_TRIGGEREDMODE_MULTI_TRIGGER;          */
  /* hADC1.Init.Oversampling.OversamplingStopReset = ADC_REGOVERSAMPLING_RESUMED_MODE; */
  
  if (HAL_ADC_Init(&hADC1) != HAL_OK)
  {
    APP_ErrorHandler();
  }
  
  sConfig.Channel      = ADC_CHANNEL_10;             
  sConfig.Rank         = ADC_REGULAR_RANK_1;        
  sConfig.SamplingTime = ADC_SAMPLETIME_247CYCLES_5;
  sConfig.SingleDiff   = ADC_SINGLE_ENDED;          
  sConfig.OffsetNumber = ADC_OFFSET_NONE;           
  /* sConfig.Offset       = 0;                         */
  /* sConfig.OffsetSign   = ADC_OFFSET_SIGN_POSITIVE;  */
  /* sConfig.OffsetSaturation = DISABLE;               */
  if (HAL_ADC_ConfigChannel(&hADC1, &sConfig) != HAL_OK)
  {
    APP_ErrorHandler();
  }
  
  sConfig.Channel      = ADC_CHANNEL_11;             
  sConfig.Rank         = ADC_REGULAR_RANK_2;        
  sConfig.SamplingTime = ADC_SAMPLETIME_247CYCLES_5; 
  sConfig.SingleDiff   = ADC_SINGLE_ENDED;          
  sConfig.OffsetNumber = ADC_OFFSET_NONE;
  if (HAL_ADC_ConfigChannel(&hADC1, &sConfig) != HAL_OK)
  {
    APP_ErrorHandler();
  }
}

/**
  * @brief  System Clock Configuration
  * @param  None
  * @retval None
  */
static void APP_SystemClockConfig(void)
{
  RCC_OscInitTypeDef  OscInitstruct = {0};
  RCC_ClkInitTypeDef  ClkInitstruct = {0};
  
  OscInitstruct.OscillatorType      = RCC_OSCILLATORTYPE_HSE | RCC_OSCILLATORTYPE_HSI | RCC_OSCILLATORTYPE_LSE | 
                                      RCC_OSCILLATORTYPE_LSI;
  OscInitstruct.HSIState            = RCC_HSI_ON;                               /* Enable HSI */
  OscInitstruct.HSIDiv              = RCC_HSI_DIV1;                             /* HSI 1 frequency division */
  OscInitstruct.HSICalibrationValue = RCC_HSICALIBRATION_8MHz;                  /* Configure HSI clock 8MHz */
  OscInitstruct.HSEState            = RCC_HSE_OFF;                              /* Close HSE */
/* OscInitstruct.HSEFreq             = RCC_HSE_24_32MHz; */                     /* Choose HSE frequency of 24-32MHz */
  OscInitstruct.LSEState            = RCC_LSE_OFF;                              /* Close LSE */
/* OscInitstruct.LSEDriver           = RCC_LSEDRIVE_HIGH; */                    /* Drive capability level: high */
  OscInitstruct.LSIState            = RCC_LSI_OFF;                              /* Close LSI */
  OscInitstruct.PLL.PLLState        = RCC_PLL_OFF;                              /* Close PLL */
/* OscInitstruct.PLL.PLLSource       = RCC_PLLSOURCE_HSI; */                    /* PLL clock source selection HSI */
/* OscInitstruct.PLL.PLLMUL          = RCC_PLL_MUL16; */                        /* PLL clock source 16-fold frequency */
  /* Configure oscillator */
  if(HAL_RCC_OscConfig(&OscInitstruct) != HAL_OK)
  {
    APP_ErrorHandler();
  }
  
  ClkInitstruct.ClockType       = RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
  ClkInitstruct.SYSCLKSource    = RCC_SYSCLKSOURCE_HSISYS;              /* System clock selection HSISYS */
  ClkInitstruct.AHBCLKDivider   = RCC_SYSCLK_DIV1;                      /* AHB clock 1 division */
  ClkInitstruct.APB1CLKDivider  = RCC_HCLK_DIV1;                        /* APB1 clock 1 division */
  ClkInitstruct.APB2CLKDivider  = RCC_HCLK_DIV2;                        /* APB2 clock 2 division */
  /* Configure Clock */
  if(HAL_RCC_ClockConfig(&ClkInitstruct, FLASH_LATENCY_0) != HAL_OK)
  {
    APP_ErrorHandler();
  }
}

/**
  * @brief  This function is executed in case of error occurrence.
  * @param  None
  * @retval None
  */
void APP_ErrorHandler(void)
{
  /* Infinite loop */
  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******************/
