#include "./BSP/ADS1278/ADS1278.h"

void ADS1278_Init(void){

	GPIO_InitTypeDef GPIO_InitStruct;
	ADS1278_DRDY_GPIO_CLK_ENABLE();		/*DRDY引脚时钟使能*/
	ADS1278_FORMAT_GPIO_CLK_ENABLE();	/*FORMAT引脚时钟使能*/
	ADS1278_SYNC_GPIO_CLK_ENABLE();		/*SYNC引脚时钟使能*/
	
	/*DRDY引脚设置为下降沿中断*/
	GPIO_InitStruct.Pin = ADS1278_DRDY_Pin;
	GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING;
	GPIO_InitStruct.Pull = GPIO_PULLUP;
	HAL_GPIO_Init(ADS1278_DRDY_GPIO_Port, &GPIO_InitStruct);
	
	HAL_NVIC_SetPriority(EXTI15_10_IRQn, 0, 1);
	HAL_NVIC_EnableIRQ(EXTI15_10_IRQn);	
	
	/*FORMAT设置为高电平输出*/
	GPIO_InitStruct.Pin = ADS1278_FORMAT_Pin;
	GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
	GPIO_InitStruct.Pull = GPIO_PULLUP;
	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
	HAL_GPIO_Init(ADS1278_FORMAT_GPIO_Port, &GPIO_InitStruct);
	
	HAL_GPIO_WritePin(ADS1278_FORMAT_GPIO_Port, ADS1278_FORMAT_Pin, GPIO_PIN_SET);
	
	/*SYNC设置为普通输出，初始为高电平*/
	GPIO_InitStruct.Pin = ADS1278_SYNC_Pin;
	GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
	GPIO_InitStruct.Pull = GPIO_PULLUP;
	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
	HAL_GPIO_Init(ADS1278_SYNC_GPIO_Port, &GPIO_InitStruct);
	
	HAL_GPIO_WritePin(ADS1278_SYNC_GPIO_Port, ADS1278_SYNC_Pin, GPIO_PIN_SET);
	
}

void ADS1278_Reset(void){
	
	/*SYNC拉低至少1个CLK周期*/
	HAL_GPIO_WritePin(ADS1278_SYNC_GPIO_Port, ADS1278_SYNC_Pin, GPIO_PIN_RESET);
	delay_ms(1);
	HAL_GPIO_WritePin(ADS1278_SYNC_GPIO_Port, ADS1278_SYNC_Pin, GPIO_PIN_SET);
	
}

uint8_t DataBuffer[300];
int num = 0; 
void ADS1278_Read_Data(void){
	uint8_t ReceiveDataArrary[24];	/*接收数据数组*/
	HAL_SPI_Receive(&g_spi1_handler, ReceiveDataArrary, 24, 1000);	/*接收数据*/	
	DataBuffer[num+0]= ReceiveDataArrary[21];
	DataBuffer[num+1]= ReceiveDataArrary[22];
	DataBuffer[num+2]= ReceiveDataArrary[23];
	num += 3;
	if(num >= 240){
		/* 暂停采集 */
		HAL_GPIO_WritePin(ADS1278_SYNC_GPIO_Port, ADS1278_SYNC_Pin, GPIO_PIN_RESET);
		printf("\r\n开始\r\n");
		for(int i=0; i<240;i++){
		
			printf("%d\r\n",DataBuffer[i]);
		}
		printf("\r\n结束\r\n");
		/* 继续采集 */
		HAL_GPIO_WritePin(ADS1278_SYNC_GPIO_Port, ADS1278_SYNC_Pin, GPIO_PIN_SET);
		num = 0;
	}
}

uint8_t SYNC_Flag = 0;
/*DRDY下降沿中断函数*/
void EXTI15_10_IRQHandler(void)
{
    if(__HAL_GPIO_EXTI_GET_IT(ADS1278_DRDY_Pin) != RESET)
    {
		
        //清除中断标志位
        __HAL_GPIO_EXTI_CLEAR_IT(ADS1278_DRDY_Pin);
		
		if(SYNC_Flag == 0){
			/* 上电第一次出现数据，复位ADS1278，重新计数 */
			ADS1278_Reset();
			SYNC_Flag = 1;
		}
		else{
			/* 开始接收数据 */
			ADS1278_Read_Data();
		}
    }
}