ADS1292R驱动

#include "ads1292r.h" #include "spi.h" #include "delay.h" uint8_t ads1292r_data_buff[9] = {0}; void ADS1292R_Init(void) { GPIO_InitTypeDef GPIO_Initure = { .Mode = GPIO_MODE_OUTPUT_PP, //推挽输出 .Pull = GPIO_NOPULL, //无 .Speed = GPIO_SPEED_FREQ_LOW, }; GPIO_Initure.Pin = ADS1292R_PWDN_PIN; HAL_GPIO_Init(ADS1292R_PWDN_PORT,&GPIO_Initure); GPIO_Initure.Pin = ADS1292R_START_PIN; HAL_GPIO_Init(ADS1292R_START_PORT,&GPIO_Initure); GPIO_Initure.Pin = ADS1292R_CS_PIN; GPIO_Initure.Pull = GPIO_PULLUP, //上拉 GPIO_Initure.Speed = GPIO_SPEED_HIGH, //高速 HAL_GPIO_Init(ADS1292R_CS_PORT,&GPIO_Initure); GPIO_Initure.Pull = GPIO_NOPULL; GPIO_Initure.Mode = GPIO_MODE_IT_FALLING; //下降沿输入 GPIO_Initure.Pin = ADS1292R_ADC_RDY_PIN; HAL_GPIO_Init(ADS1292R_ADC_RDY_PORT,&GPIO_Initure); ADS1292R_CS_H; ADS1292R_START_L; ADS1292R_PWDN_H; filter_bp17_init(); //DSP滤波器初始化 } uint8_t ADS1292R_SPI_RW(uint8_t data) { uint8_t rx_data = 0; HAL_SPI_TransmitReceive(&SPI1_Handler, &data, &rx_data, 1, 10); return rx_data; } /**ADS1292R上电复位 **/ void ADS1292R_PowerOnInit(void) { uint8_t device_id ; ADS1292R_START_H; ADS1292R_CS_H; ADS1292R_PWDN_L;//进入掉电模式 delay_ms(10); ADS1292R_PWDN_H;//退出掉电模式 delay_ms(10);//等待稳定 ADS1292R_PWDN_L;//发出复位脉冲 delay_us(10); ADS1292R_PWDN_H; delay_ms(100);//等待稳定，可以开始使用ADS1292R ADS1292R_START_L; ADS1292R_CMD(ADS1292R_SDATAC);//发送停止连续读取数据命令 delay_ms(1); while(device_id!=0x73) //识别芯片型号，1292r为0x73 { device_id = ADS1292R_REG(ADS1292R_RREG|ADS1292R_ID,0X00); delay_ms(200); } OLED_PrintfString(0,2,"ADS1292R Detected"); ADS1292R_REG(ADS1292R_WREG|ADS1292R_CONFIG2, 0XE0); //使用内部参考电压 delay_ms(10);//等待内部参考电压稳定 ADS1292R_REG(ADS1292R_WREG|ADS1292R_CONFIG1, 0X02); //设置转换速率为500SPS //ADS1292R_REG(ADS1292R_WREG|ADS1292R_CONFIG1, 0X00); //设置转换速率为125SPS ADS1292R_REG(ADS1292R_WREG|ADS1292R_LOFF, 0XF0); ADS1292R_REG(ADS1292R_WREG|ADS1292R_CH1SET, 0X00); ADS1292R_REG(ADS1292R_WREG|ADS1292R_CH2SET, 0x00); ADS1292R_REG(ADS1292R_WREG|ADS1292R_RLD_SENS, 0x30); // ADS1292R_REG(ADS1292R_WREG|ADS1292R_RLD_SENS, 0x3C); //使用通道2提取共模电压 ADS1292R_REG(ADS1292R_WREG|ADS1292R_LOFF_SENS, 0x3F); // ADS1292R_REG(ADS1292R_WREG|LOFF_STAT, 0X00); ADS1292R_REG(ADS1292R_WREG|ADS1292R_RESP1, 0xDE); ADS1292R_REG(ADS1292R_WREG|ADS1292R_RESP2, 0x07); ADS1292R_REG(ADS1292R_WREG|ADS1292R_GPIO, 0x0C); } void ADS1292R_Work(void) { OLED_PrintfString(0,2,"ADS1292R Working"); ADS1292R_CMD(ADS1292R_RDATAC);//回到连续读取数据模式，检测噪声数据 ADS1292R_START_H;//启动转换 //中断线1-PB1 HAL_NVIC_SetPriority(EXTI1_IRQn,1,1); //抢占优先级为1，子优先级为1 HAL_NVIC_EnableIRQ(EXTI1_IRQn); //使能中断线1 } void ADS1292R_Halt(void) { OLED_PrintfString(0,2,"ADS1292R Halt"); ADS1292R_START_L;//启动转换 ADS1292R_CMD(ADS1292R_SDATAC);//发送停止连续读取数据命令 HAL_NVIC_DisableIRQ(EXTI1_IRQn); //关闭中断线1 } //对ADS1292R写入指令 void ADS1292R_CMD(uint8_t cmd) { ADS1292R_CS_L; delay_us(1); ADS1292R_SPI_RW(cmd); delay_us(1); ADS1292R_CS_H; } //对ADS1292R内部寄存器进行操作 uint8_t ADS1292R_REG(uint8_t cmd, uint8_t data) //只读一个数据 { uint8_t rx_data = 0; ADS1292R_CS_L; delay_us(1); ADS1292R_SPI_RW(cmd); //读写指令 ADS1292R_SPI_RW(0X00); //需要写几个数据（n+1个） if((cmd&0x20)==0x20) //判断是否为读寄存器指令 rx_data = ADS1292R_SPI_RW(0X00); //返回寄存器值 else rx_data = ADS1292R_SPI_RW(data); //写入数值 delay_us(1); ADS1292R_CS_H; return rx_data; } static uint8_t temp1292r[9] = {0}; //并没有什么卵用 /*读取72位的数据1100+LOFF_STAT[4:0]+GPIO[1:0]+13个0+2CHx24位，共9字节*/ void ADS1292R_ReadData(void) { ADS1292R_CS_L; HAL_SPI_TransmitReceive(&SPI1_Handler, temp1292r, ads1292r_data_buff, 9, 10); ADS1292R_CS_H; }