/**
  ******************************************************************************
  * @file    main.c
  * @author  MCU Application Team
  * @brief   Main program body
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) Puya Semiconductor Co.
  * All rights reserved.</center></h2>
  *
  * <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 "py32f0xx_hal.h"
#include "py32f0xx_bsp_printf.h"

/* Private define ------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private user code ---------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
void APP_ErrorHandler(void);

/* Private define ------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
ADC_HandleTypeDef             AdcHandle;
ADC_ChannelConfTypeDef        sConfig;
volatile uint16_t             aADCxConvertedData;
TIM_HandleTypeDef             TimHandle;
TIM_MasterConfigTypeDef       sMasterConfig;

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

int main(void)
{
  HAL_Init();   
  
  BSP_USART_Config();

  APP_TimerInit();  

  APP_AdcConfig();
  
  while (1);
}

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;
  if (HAL_ADCEx_Calibration_Start(&AdcHandle) != HAL_OK)                         
  {
    APP_ErrorHandler();
  }
  AdcHandle.Init.ClockPrescaler        = ADC_CLOCK_SYNC_PCLK_DIV1;                /* ADC clock no division */
  AdcHandle.Init.Resolution            = ADC_RESOLUTION_12B;                      /* 12bit */
  AdcHandle.Init.DataAlign             = ADC_DATAALIGN_RIGHT;                     /* Right alignment */
  AdcHandle.Init.ScanConvMode          = ADC_SCAN_DIRECTION_BACKWARD;             /* Backward */
  AdcHandle.Init.EOCSelection          = ADC_EOC_SINGLE_CONV;                     /* End flag */
  AdcHandle.Init.LowPowerAutoWait      = ENABLE;
  AdcHandle.Init.ContinuousConvMode    = DISABLE;
  AdcHandle.Init.DiscontinuousConvMode = ENABLE;
  AdcHandle.Init.ExternalTrigConv      = ADC_EXTERNALTRIGCONV_T1_TRGO;            /* External trigger: TIM1_TRGO */
  AdcHandle.Init.ExternalTrigConvEdge  = ADC_EXTERNALTRIGCONVEDGE_RISINGFALLING;  /* Triggered by both edges */
  AdcHandle.Init.DMAContinuousRequests = DISABLE;                                 /* No DMA */
  AdcHandle.Init.Overrun               = ADC_OVR_DATA_OVERWRITTEN;
  AdcHandle.Init.SamplingTimeCommon    = ADC_SAMPLETIME_239CYCLES_5;
  if (HAL_ADC_Init(&AdcHandle) != HAL_OK)
  {
    APP_ErrorHandler();
  }

  sConfig.Rank         = ADC_RANK_CHANNEL_NUMBER;
  sConfig.Channel      = ADC_CHANNEL_0;
  if (HAL_ADC_ConfigChannel(&AdcHandle, &sConfig) != HAL_OK)                      
  {
    APP_ErrorHandler();
  }
  /* Start ADC with Interrupt */
  if (HAL_ADC_Start_IT(&AdcHandle) != HAL_OK)                                     
  {
    APP_ErrorHandler();
  }
}

static void APP_TimerInit(void)
{

  __HAL_RCC_TIM1_CLK_ENABLE();
  TimHandle.Instance = TIM1;
  TimHandle.Init.Period            = 8000 - 1;
  TimHandle.Init.Prescaler         = 1000 - 1;
  TimHandle.Init.ClockDivision     = TIM_CLOCKDIVISION_DIV1;
  TimHandle.Init.CounterMode       = TIM_COUNTERMODE_UP;
  TimHandle.Init.RepetitionCounter = 0;
  TimHandle.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
  if (HAL_TIM_Base_Init(&TimHandle) != HAL_OK)
  {
    APP_ErrorHandler();
  }

  sMasterConfig.MasterOutputTrigger = TIM_TRGO_UPDATE;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  HAL_TIMEx_MasterConfigSynchronization(&TimHandle, &sMasterConfig);
  if (HAL_TIM_Base_Start(&TimHandle) != HAL_OK)
  {
    APP_ErrorHandler();
  }
}

void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef *hadc)
{
  aADCxConvertedData = hadc->Instance->DR;
  printf("ADC: %d\r\n", aADCxConvertedData);
}

void APP_ErrorHandler(void)
{
  while (1);
}

#ifdef  USE_FULL_ASSERT
/**
  * @brief  Export assert error source and line number
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  while (1)
  {
  }
}
#endif /* USE_FULL_ASSERT */

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