93 lines
2.5 KiB
C
93 lines
2.5 KiB
C
#include "./BSP/ADS1278/ADS1278.h"
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void ADS1278_Init(void){
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GPIO_InitTypeDef GPIO_InitStruct;
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ADS1278_DRDY_GPIO_CLK_ENABLE(); /*DRDY引脚时钟使能*/
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ADS1278_FORMAT_GPIO_CLK_ENABLE(); /*FORMAT引脚时钟使能*/
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ADS1278_SYNC_GPIO_CLK_ENABLE(); /*SYNC引脚时钟使能*/
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/*DRDY引脚设置为下降沿中断*/
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GPIO_InitStruct.Pin = ADS1278_DRDY_Pin;
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GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING;
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GPIO_InitStruct.Pull = GPIO_PULLUP;
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HAL_GPIO_Init(ADS1278_DRDY_GPIO_Port, &GPIO_InitStruct);
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HAL_NVIC_SetPriority(EXTI15_10_IRQn, 0, 1);
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HAL_NVIC_EnableIRQ(EXTI15_10_IRQn);
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/*FORMAT设置为高电平输出*/
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GPIO_InitStruct.Pin = ADS1278_FORMAT_Pin;
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GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStruct.Pull = GPIO_PULLUP;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
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HAL_GPIO_Init(ADS1278_FORMAT_GPIO_Port, &GPIO_InitStruct);
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HAL_GPIO_WritePin(ADS1278_FORMAT_GPIO_Port, ADS1278_FORMAT_Pin, GPIO_PIN_SET);
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/*SYNC设置为普通输出，初始为高电平*/
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GPIO_InitStruct.Pin = ADS1278_SYNC_Pin;
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GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStruct.Pull = GPIO_PULLUP;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
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HAL_GPIO_Init(ADS1278_SYNC_GPIO_Port, &GPIO_InitStruct);
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HAL_GPIO_WritePin(ADS1278_SYNC_GPIO_Port, ADS1278_SYNC_Pin, GPIO_PIN_SET);
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}
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void ADS1278_Reset(void){
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/*SYNC拉低至少1个CLK周期*/
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HAL_GPIO_WritePin(ADS1278_SYNC_GPIO_Port, ADS1278_SYNC_Pin, GPIO_PIN_RESET);
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delay_ms(1);
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HAL_GPIO_WritePin(ADS1278_SYNC_GPIO_Port, ADS1278_SYNC_Pin, GPIO_PIN_SET);
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}
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uint8_t DataBuffer[300];
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int num = 0;
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void ADS1278_Read_Data(void){
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uint8_t ReceiveDataArrary[24]; /*接收数据数组*/
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HAL_SPI_Receive(&g_spi1_handler, ReceiveDataArrary, 24, 1000); /*接收数据*/
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DataBuffer[num+0]= ReceiveDataArrary[21];
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DataBuffer[num+1]= ReceiveDataArrary[22];
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DataBuffer[num+2]= ReceiveDataArrary[23];
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num += 3;
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if(num >= 240){
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/* 暂停采集 */
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HAL_GPIO_WritePin(ADS1278_SYNC_GPIO_Port, ADS1278_SYNC_Pin, GPIO_PIN_RESET);
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printf("\r\n开始\r\n");
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for(int i=0; i<240;i++){
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printf("%d\r\n",DataBuffer[i]);
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}
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printf("\r\n结束\r\n");
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/* 继续采集 */
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HAL_GPIO_WritePin(ADS1278_SYNC_GPIO_Port, ADS1278_SYNC_Pin, GPIO_PIN_SET);
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num = 0;
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}
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}
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uint8_t SYNC_Flag = 0;
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/*DRDY下降沿中断函数*/
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void EXTI15_10_IRQHandler(void)
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{
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if(__HAL_GPIO_EXTI_GET_IT(ADS1278_DRDY_Pin) != RESET)
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{
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//清除中断标志位
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__HAL_GPIO_EXTI_CLEAR_IT(ADS1278_DRDY_Pin);
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if(SYNC_Flag == 0){
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/* 上电第一次出现数据，复位ADS1278，重新计数 */
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ADS1278_Reset();
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SYNC_Flag = 1;
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}
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else{
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/* 开始接收数据 */
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ADS1278_Read_Data();
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}
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}
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}
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