#include "main.h"

//#define  APP_TX_DATA_SIZE  64

ADC_HandleTypeDef hadc;
DMA_HandleTypeDef hdma_adc;

PCD_HandleTypeDef hpcd_USB_FS;
PCD_HandleTypeDef USBD_Device;

void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_DMA_Init(void);
static void MX_ADC_Init(void);
static void MX_USB_PCD_Init(void);

uint16_t ADCval[8];

extern uint8_t UserTxBuffer[APP_TX_DATA_SIZE];

int main(void)
{
  HAL_Init();

  SystemClock_Config();

  MX_GPIO_Init();
  MX_DMA_Init();
  MX_ADC_Init();

  HAL_ADC_Start_DMA(&hadc, ADCval, 8);

  USBD_Init(&USBD_Device, &VCP_Desc, 0);
  USBD_RegisterClass(&USBD_Device, &USBD_CDC);
  USBD_CDC_RegisterInterface(&USBD_Device, &USBD_CDC_fops);
  USBD_Start(&USBD_Device);

  while (1)
  {
    HAL_GPIO_WritePin(GPIOB,GPIO_PIN_13,1);
    HAL_Delay(50);
    HAL_GPIO_WritePin(GPIOB,GPIO_PIN_13,0);
    HAL_Delay(50);
    memset(UserTxBuffer, 0, APP_TX_DATA_SIZE);
    sprintf(UserTxBuffer, "%d \t %d \t %d \t %d \t %d \t %d \t %d \t %d \r\n", ADCval[0], ADCval[1], ADCval[2], ADCval[3], ADCval[4], ADCval[5], ADCval[6], ADCval[7]);
    USBD_CDC_SetTxBuffer(&USBD_Device, (uint8_t*)&UserTxBuffer[0], APP_TX_DATA_SIZE);
    USBD_CDC_TransmitPacket(&USBD_Device);
  }
}

void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
  RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};

  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI14|RCC_OSCILLATORTYPE_HSI48;
  RCC_OscInitStruct.HSI48State = RCC_HSI48_ON;
  RCC_OscInitStruct.HSI14State = RCC_HSI14_ON;
  RCC_OscInitStruct.HSI14CalibrationValue = 16;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
  HAL_RCC_OscConfig(&RCC_OscInitStruct);

  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI48;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
  HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1);

  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USB;
  PeriphClkInit.UsbClockSelection = RCC_USBCLKSOURCE_HSI48;
  HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit);

}

static void MX_ADC_Init(void)
{

  ADC_ChannelConfTypeDef sConfig = {0};

  hadc.Instance = ADC1;
  hadc.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV1;
  hadc.Init.Resolution = ADC_RESOLUTION_12B;
  hadc.Init.DataAlign = ADC_DATAALIGN_RIGHT;
  hadc.Init.ScanConvMode = ADC_SCAN_DIRECTION_FORWARD;
  hadc.Init.EOCSelection = ADC_EOC_SEQ_CONV;
  hadc.Init.LowPowerAutoWait = DISABLE;
  hadc.Init.LowPowerAutoPowerOff = DISABLE;
  hadc.Init.ContinuousConvMode = ENABLE;
  hadc.Init.DiscontinuousConvMode = DISABLE;
  hadc.Init.ExternalTrigConv = ADC_SOFTWARE_START;
  hadc.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
  hadc.Init.DMAContinuousRequests = ENABLE;
  hadc.Init.Overrun = ADC_OVR_DATA_PRESERVED;
  HAL_ADC_Init(&hadc);

  sConfig.Rank = ADC_RANK_CHANNEL_NUMBER;
  sConfig.SamplingTime = ADC_SAMPLETIME_239CYCLES_5;
  sConfig.Channel = ADC_CHANNEL_1;
  HAL_ADC_ConfigChannel(&hadc, &sConfig);

  sConfig.Channel = ADC_CHANNEL_2;
  HAL_ADC_ConfigChannel(&hadc, &sConfig);

  sConfig.Channel = ADC_CHANNEL_3;
  HAL_ADC_ConfigChannel(&hadc, &sConfig);

  sConfig.Channel = ADC_CHANNEL_4;
  HAL_ADC_ConfigChannel(&hadc, &sConfig);

  sConfig.Channel = ADC_CHANNEL_5;
  HAL_ADC_ConfigChannel(&hadc, &sConfig);

  sConfig.Channel = ADC_CHANNEL_6;
  HAL_ADC_ConfigChannel(&hadc, &sConfig);

  sConfig.Channel = ADC_CHANNEL_7;
  HAL_ADC_ConfigChannel(&hadc, &sConfig);

  sConfig.Channel = ADC_CHANNEL_8;
  HAL_ADC_ConfigChannel(&hadc, &sConfig);
}


static void MX_USB_PCD_Init(void)
{

  hpcd_USB_FS.Instance = USB;
  hpcd_USB_FS.Init.dev_endpoints = 8;
  hpcd_USB_FS.Init.speed = PCD_SPEED_FULL;
  hpcd_USB_FS.Init.phy_itface = PCD_PHY_EMBEDDED;
  hpcd_USB_FS.Init.low_power_enable = DISABLE;
  hpcd_USB_FS.Init.lpm_enable = DISABLE;
  hpcd_USB_FS.Init.battery_charging_enable = DISABLE;
  HAL_PCD_Init(&hpcd_USB_FS);
}


static void MX_DMA_Init(void)
{
  __HAL_RCC_DMA1_CLK_ENABLE();

  HAL_NVIC_SetPriority(DMA1_Channel1_IRQn, 0, 0);
  HAL_NVIC_EnableIRQ(DMA1_Channel1_IRQn);
}


static void MX_GPIO_Init(void)
{

  GPIO_InitTypeDef GPIO_InitStruct = {0};

  __HAL_RCC_GPIOB_CLK_ENABLE();
  __HAL_RCC_GPIOA_CLK_ENABLE();

  HAL_GPIO_WritePin(GPIOB, GPIO_PIN_13, GPIO_PIN_RESET);

  GPIO_InitStruct.Pin = GPIO_PIN_13;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
}

void Error_Handler(void)
{
  while(1){
    HAL_GPIO_WritePin(GPIOB,GPIO_PIN_13,1);
    HAL_Delay(100);
    HAL_GPIO_WritePin(GPIOB,GPIO_PIN_13,0);
    HAL_Delay(100);
  }
}