64kSPS、低功耗、多通道同步、24 位ADC生物电势测量的模拟前端AFE9XX

文章目录

前言

AFE94X多通道同步采集，64KSPS,24bit SD_ADC AFE94X
验证驱动，阻塞等待DRDY(仅验证驱动使用),兼容-类比芯片STM32HAL库SPI
https://blog.csdn.net/hhhhwdnmd/article/details/135774192?spm=1001.2014.3001.5501

一、AFE94X是什么？

AFE94X是多通道同步采样 24 位 Δ-Σ 模数转换器(ADC)系列，内置有可编程增益放大器(PGA)、内部基准以及板载振荡器。AFE94x 包含医疗心电图(ECG)和脑电图(EEG)应用中通
常所需的全部功能。凭借高集成度和出色性能，AFE94x能够以大幅缩小的尺寸、显著降低的功耗和整体成本开发可扩展的医疗仪器系统。

二、使用步骤

1.AFE94X.h

/*    Analogysemi xutong    2023/02/15*/#ifndef __AFE94X_H#define __AFE94X_H #include "bsp_lpspi.h"#include "stm32f4xx.h" #define AFE94x_START_GPIO_CLK_ENABLE()       __HAL_RCC_GPIOA_CLK_ENABLE()#define AFE94x_PWDN_GPIO_CLK_ENABLE()        __HAL_RCC_GPIOA_CLK_ENABLE()#define AFE94x_DRDY_GPIO_CLK_ENABLE()        __HAL_RCC_GPIOA_CLK_ENABLE()#define AFE94x_REST_GPIO_CLK_ENABLE()        __HAL_RCC_GPIOB_CLK_ENABLE() /* Definition for AFE94x Pins */#define AFE94x_START_PIN                     GPIO_PIN_8#define AFE94x_START_GPIO_PORT               GPIOA#define AFE94x_DRDY_PIN                     GPIO_PIN_12#define AFE94x_DRDY_GPIO_PORT                GPIOA#define AFE94x_PWDN_PIN                      GPIO_PIN_11#define AFE94x_PWDN_GPIO_PORT                GPIOA#define AFE94x_REST_PIN                      GPIO_PIN_1#define AFE94x_REST_GPIO_PORT                GPIOB /*command define*/ #define AFE94X_WAKEUP  0x02#define AFE94X_STANDBY 0x04#define AFE94X_RESET   0x06#define AFE94X_START   0x08#define AFE94X_STOP    0x0A#define AFE94X_RDATAC  0x10#define AFE94X_SDATAC  0x11#define AFE94X_RDATA   0x12#define AFE94X_OFFSETCAL  0x1A#define AFE94X_RREG    0X20#define AFE94X_WREG    0X40#define AFE94X_RREGX   0xE4#define AFE94X_WREGX   0xE8//RREG Read n nnnn registers starting at address r rrrr //First Byte 001r rrrr (2xh)//Second Byte 000n nnnn //n nnnn = number of registers to be read or written – 1. For example, to read or write three registers, set n nnnn = 0 (0010). r rrrr = the//starting register address for read and write commands//WREG 同上//WREG First Byte (4xh)/*    寄存器地址*/#define AFE94X_ID           0x00#define AFE94X_CONFIG1      0x01#define AFE94X_CONFIG2      0x02#define AFE94X_CONFIG3      0x03#define AFE94X_LOFF         0x04#define AFE94X_CH1SET      0X05#define AFE94X_CH2SET      0X06#define AFE94X_CH3SET      0X07#define AFE94X_CH4SET      0X08#define AFE94X_CH5SET      0X09#define AFE94X_CH6SET      0X0A#define AFE94X_CH7SET      0X0B#define AFE94X_CH8SET      0X0C#define AFE94X_RLD_SENSP   0X0D#define AFE94X_RLD_SENSN   0X0E#define AFE94X_LOFF_SENSP  0X0F#define AFE94X_LOFF_SENSN  0X10#define AFE94X_LOFF_FLIP   0X11#define LOFF_STATP_Status   0X12#define LOFF_STATN_Status   0X13#define AFE94X_GPIO        0X14 #define AFE94X_PACE        0X15#define AFE94X_RESV        0X16#define AFE94X_CONFIG4     0X17#define AFE94X_WCT1        0X18#define AFE94X_WCT2        0X19#define AFE94X_WCT3        0X1A#define AFE94X_CONFIG5     0X1C#define AFE94X_CONFIG6     0X1D#define AFE94X_CONFIG7     0X1E#define AFE94X_CONFIG8     0X1F#define AFE94X_CONFIG9     0X20#define AFE94X_LOFF_CFCG1  0X21#define AFE94X_LOFF_CFCG2  0X22#define AFE94X_LOFF_ACLO1  0X23#define AFE94X_LOFF_ACLO2  0X24#define AFE94X_REDR2P      0X25#define AFE94X_CHMUX_MSB   0X26#define AFE94X_LOFF_CMP_FLIP 0X27#define AFE94X_LOFF_SENSN1 0X28#define AFE94X_LOFF_SENSP1 0X29#define AFE94X_SRB1_COFIG  0X2A#define AFE94X_BIAS_DAC    0X2B#define AFE94X_XOSC_CFG    0X2C#define AFE94X_LOW_NOISE   0X2E#define AFE94X_MISC_ANA    0X34#define AFE94X_MOD_STAT    0X35#define AFE94X_CMD_STAT    0X36#define AFE94X_PGAP_OOR    0X37#define AFE94X_PGAN_OOR    0X28/*    寄存器设置*///CONFIG2#defineEXT_TEST_ON       0X00//关闭内部测试信号,外部（默认）#defineINT_TEST_ON   0X10//CONFIG3#define INT_REF_EN         0X80   //内部基准(default)#define EXT_REF_EN         0X00   //外部基准#define AFE94X_REF_2_4V    0X00   //default#define AFE94X_REF_4V      0X20#define RLD_REF_PD_EN      0X04   //default#define RLD_REF_PD_DIS     0X00#define AFE94X_RLDREF_INT  0X08#define AFE94X_RLDREF_EXT  0X00   //default#define AFE94X_RLD_BUF_EN  0X04#define AFE94X_RLD_BUF_DIS 0X00   //default#define RLD_LOFF_SENS_EN   0X02#define RLD_LOFF_SENS_DIS  0X00   //default #define RLD_STAT_EN        0X00   //default#define RLD_STAT_DIS       0X01//LOFF#define AFE94X_COMP_95_5   0X00#define AFE94X_COMP_92_7   0X20#define AFE94X_COMP_90_8   0X40#define AFE94X_COMP_87_12  0X60#define AFE94X_COMP_85_15  0X80#define AFE94X_COMP_80_20  0XA0#define AFE94X_COMP_75_25  0XC0#define AFE94X_COMP_70_30  0XE0#define LEAD_CURRENT_9NA   0X00#define LEAD_CURRENT_18NA  0X03#define LEAD_CURRENT_27NA  0X04#define LEAD_CURRENT_40NA  0X0C#define FLEAD_AC_LEAD      0X01#define FLEAD_DC_LEAD      0X03//CHXSET#define AFE94X_CH_PD       0X80  //Channel power-down#define AFE94X_CH_EN       0X00  //Normal operation#define AFE94X_PGA_1       0X10#define AFE94X_PGA_2       0X20#define AFE94X_PGA_3       0X30#define AFE94X_PGA_4       0X40#define AFE94X_PGA_6       0X00 //default#define AFE94X_PGA_8       0X40#define AFE94X_PGA_12      0X60#define AFE94X_PGA_24      0X70#defineMUX_Normal_input   0X00//普通电极输入（默认）#defineMUX_Input_shorted  0X01//输入短路#define MUX_RLD_Test       0x02#defineMUX_Test_signal    0X05//测试信号输入#defineMUX_RLD_DRP   0X06#defineMUX_RLD_DRN   0X07#defineMUX_RLD_DRPM   0X00//CHX_MUX_MSB must setCHX_MUX_MSB|MUXn = 1000#defineMUX_RSP_RESP       0X01 //CHX_MUX_MSB must set  CHX_MUX_MSB|MUXn = 1001#define MUX_AFE_BYPASS     0X02 //CHX_MUX_MSB must set  CHX_MUX_MSB|MUXn = 1010//CONFIG4#define AFE94X_SHOT_MODE   0X20#define AFE94X_CONT_MODE   0X00 //default#define AFE94X_COMP_PDEN   0X02 #define AFE94X_COMP_PDDIS  0X00 //default#define WCT_RLD_CONNECT    0X01 //WCT1#define PD_WCTA_DIS        0X00 //default#define PD_WCTA_EN         0X08#define WCTA_AIN1P_Amp     0X00#define WCTA_AIN1N_Amp     0X01#define WCTA_AIN2P_Amp     0X02#define WCTA_AIN2N_Amp     0X03#define WCTA_AIN3P_Amp     0X04#define WCTA_AIN3N_Amp     0X05#define WCTA_AIN4P_Amp     0X06#define WCTA_AIN4N_Amp     0X07//WCT2#define PD_WCTC_DIS        0X00 //default#define PD_WCTC_EN         0X80#define PD_WCTB_DIS        0X00#define PD_WCTB_EN         0X40 //default#define WCTB_AIN1P_Amp     0X00#define WCTB_AIN1N_Amp     0X08#define WCTB_AIN2P_Amp     0X10#define WCTB_AIN2N_Amp     0X18#define WCTB_AIN3P_Amp     0X20#define WCTB_AIN3N_Amp     0X28#define WCTB_AIN4P_Amp     0X30#define WCTB_AIN4N_Amp     0X38#define WCTC_AIN1P_Amp     0X00#define WCTC_AIN1N_Amp     0X01#define WCTC_AIN2P_Amp     0X02#define WCTC_AIN2N_Amp     0X03#define WCTC_AIN3P_Amp     0X04#define WCTC_AIN3N_Amp     0X05#define WCTC_AIN4P_Amp     0X06#define WCTC_AIN4N_Amp     0X07//WCT3#define WCT_SW7_OFF        0X00 //default#define WCT_SW7_ON         0X80#define WCT_SW6_OFF        0X00 //default#define WCT_SW6_ON         0X40 #define WCT_SW5_OFF        0X00 //default#define WCT_SW5_ON         0X20#define WCT_SW4_OFF        0X00 //default#define WCT_SW4_ON         0X10#define WCT_SW4_EN         0X08#define WCT_SW4_DIS        0X00 //default#define WCT_BUF_LOW        0X04 //default#define WCT_BUF_HIGH       0X00#define WCT_BYPASS_BUF     0X01//CONFIG5#define INT_OSC_2M         0X00 //default Internal OSC frequency 2M#define INT_OSC_1M         0X40 //Internal OSC frequency 1M#define INT_OSC_0_5M       0X80 //Internal OSC frequency 512K#define INT_OSC_0_2M       0XC0 //Internal OSC frequency 216K#define AFE94X_HS_MODE     0X02#define AFE94X_LP_MODE     0X01//L0FF_CGF2#define RLD_COMP_95_5      0X00 //default#define RLD_COMP_92_7      0X04#define RLD_COMP_90_8      0X08#define RLD_COMP_87_12     0X0C#define RLD_COMP_85_15     0X10#define RLD_COMP_80_20     0X14#define RLD_COMP_75_25     0X18#define RLD_COMP_70_30     0X38#define LEAD_Debounce_DIS  0X00 //default#define LEDA_Debounce_117  0x01//CHMUX_MSB#define CH8_MUX_MSB        0X80#define CH7_MUX_MSB      0X40#define CH6_MUX_MSB      0X20#define CH5_MUX_MSB        0X10#define CH4_MUX_MSB       0X08#define CH3_MUX_MSB        0X04#define CH2_MUX_MSB        0X02#define CH1_MUX_MSB        0X01//GPIO#define GPIOD_GPIO1        0X10#define GPIOD_GPIO2        0X20#define GPIOD_GPIO3        0X40#define GPIOD_GPIO4        0X80#define GPIO_IN_GPIO1      0X01#define GPIO_IN_GPIO2      0X02#define GPIO_IN_GPIO3      0X04#define GPIO_IN_GPIO4      0X08#define GPIO_OUT_GPIO1     0X00#define GPIO_OUT_GPIO2     0X00#define GPIO_OUT_GPIO3     0X00#define GPIO_OUT_GPIO4     0X00//LOFF_CFG1#define RLD_COMP_EN#define CUR_LEVEL//RLD_DAC#define RLD_DAC_EN         0X80#define RLD_DAC_DIS        0X00#define RLD_REF_AVDD       0X00#define RLD_REF_AREEP      0X40/*  通道选择  channel select*/#define AFE94X_AIN1        0#define AFE94X_AIN2        1#define AFE94X_AIN3        2#define AFE94X_AIN4        3#define AFE94X_AIN5        4#define AFE94X_AIN6        5#define AFE94X_AIN7        6#define AFE94X_AIN8        7//写命令void AFE9XX_Command(uint8_t Com);//获取芯片的ID号uint8_t AFE9XX_GetChipID(void); //获取寄存器值uint8_t AFE9XX_GetReg(uint8_t Rreg);//获取多个寄存器值void AFE9XX_ReadMultiReg(uint8_t StartReg,uint8_t RegNum,uint8_t *Data);//写入寄存器值void AFE9XX_WriteReg(uint8_t Wreg,uint8_t Data);//写多个寄存器的值void AFE9XX_WriteMultiReg(uint8_t StartReg,uint8_t RegNum,uint8_t *Data);//获取所有寄存器值void AFE9XX_GetAllReg(void);//设定通道并且获取ADC的值// CH设置为 0或者设通道0/1void AFE9XX_GetADC_Value(uint8_t AIN_P,uint8_t AIN_N,uint8_t *Rxdata);//初始化AFE9XXvoid AFE9XX_Init(void);//获取通道ADC值float AFE9xx_GetValue(uint8_t AIN_CH,uint8_t AFE94X_REF,uint8_t *Rxdata);//获取所有通道ADC值void AFE94X_GetAllValue(uint8_t AFE94X_REF,uint8_t *Rxdata,float *Voltage);//获取内部温度传感器值float AFE9XX_GetTempture(uint8_t *Rxdata);//获取设备噪声值float AFE9XX_Noise_Test(uint8_t *Rxdata);//电源测试float AFE9XX_PWR_Test(uint8_t *Rxdata);//直流导联脱落void AFE9XX_DCLEAD_OFF(uint8_t *Rxdata);//内部信号测试void AFE9XX_SINGLE_TEST(uint8_t *Rxdata);void TEST_RLD_SINGLE(uint8_t *Rxdata);#endif

2.AFE94X.c

代码如下（示例）：

#include "AFE94X.h"//初始化AF94Xvoid AFE9XX_Init(void){  //拉PWDN和RSTGPIO_InitTypeDef GPIO_Initure;    AFE94x_START_GPIO_CLK_ENABLE();           //开启START时钟AFE94x_PWDN_GPIO_CLK_ENABLE();            //开启PWDN时钟AFE94x_DRDY_GPIO_CLK_ENABLE();            //开启DRDY时钟AFE94x_REST_GPIO_CLK_ENABLE();            //开启REST时钟    GPIO_Initure.Pin=AFE94x_DRDY_PIN;         //DRDY    GPIO_Initure.Mode=GPIO_MODE_INPUT;      GPIO_Initure.Pull=GPIO_PULLUP;              GPIO_Initure.Speed=GPIO_SPEED_HIGH;         HAL_GPIO_Init(AFE94x_DRDY_GPIO_PORT,&GPIO_Initure);GPIO_Initure.Pin=AFE94x_PWDN_PIN;          //PWDN    GPIO_Initure.Mode=GPIO_MODE_OUTPUT_PP;      GPIO_Initure.Pull=GPIO_PULLUP;              GPIO_Initure.Speed=GPIO_SPEED_HIGH;         HAL_GPIO_Init(AFE94x_PWDN_GPIO_PORT,&GPIO_Initure);GPIO_Initure.Pin=AFE94x_START_PIN;         //START    GPIO_Initure.Mode=GPIO_MODE_OUTPUT_PP;      GPIO_Initure.Pull=GPIO_PULLUP;              GPIO_Initure.Speed=GPIO_SPEED_HIGH;         HAL_GPIO_Init(AFE94x_START_GPIO_PORT,&GPIO_Initure);    GPIO_Initure.Pin=AFE94x_REST_PIN;           //REST    GPIO_Initure.Mode=GPIO_MODE_OUTPUT_PP;      GPIO_Initure.Pull=GPIO_PULLUP;              GPIO_Initure.Speed=GPIO_SPEED_HIGH;         HAL_GPIO_Init(AFE94x_REST_GPIO_PORT,&GPIO_Initure);HAL_GPIO_WritePin(AFE94x_PWDN_GPIO_PORT,AFE94x_PWDN_PIN,1);  //拉高PWDNHAL_GPIO_WritePin(AFE94x_REST_GPIO_PORT,AFE94x_REST_PIN,0);  //拉低RESTHAL_Delay(1);HAL_GPIO_WritePin(AFE94x_REST_GPIO_PORT,AFE94x_REST_PIN,1);  //拉低RESTHAL_GPIO_WritePin(AFE94x_START_GPIO_PORT,AFE94x_START_PIN,0);//STARTAFE9XX_Command(AFE94X_RESET);}//获取芯片的ID号uint8_t AFE9XX_GetChipID(void){    uint8_t ID;    ID=AFE9XX_GetReg(AFE94X_ID);    return ID;}//获取芯片寄存器值uint8_t AFE9XX_GetReg(uint8_t Rreg){   uint8_t TxData[3];   uint8_t RxData[3];   uint8_t Reg_Val=0;//寄存器地址小于0X1F   if(Rreg <= 0X1F)   {//读取命令，选择要读取的寄存器TxData[0]=AFE94X_RREG|Rreg;//读取单个寄存器TxData[1]=0x00;Lpspi_Read(3,TxData,RxData);//返回寄存器值   }   //寄存器地址大于0X1F   else   {   //获取CONFIG8寄存器ValueReg_Val=AFE9XX_GetReg(AFE94X_CONFIG8);//写入CONFIG8寄存器地址偏移命令，TxData[0]=AFE94X_WREG|AFE94X_CONFIG8;//选择要写入的的寄存器TxData[1]=0x00;//读取写入寄存器TxData[2]=Reg_Val|0x80;  //SET ADDR_OFFSETLpspi_Write(3,TxData);      //读取命令，TxData[0]=AFE94X_RREG|Rreg;//选择要读取的寄存器TxData[1]=0x00;//开始读取Lpspi_Read(3,TxData,RxData);//返回寄存器值      //清除CONFIG8寄存器地址偏移位，TxData[0]=AFE94X_WREG|AFE94X_CONFIG8;//选择要写入的的寄存器TxData[1]=0x00;//读取写入寄存器TxData[2]=Reg_Val&0X7F;  //Clear ADDR_OFFSETLpspi_Write(3,TxData);     }    return RxData[2];}//写单个芯片寄存器值void AFE9XX_WriteReg(uint8_t Wreg,uint8_t Data){    uint8_t TxData[3];uint8_t Reg_Val=0;//寄存器地址小于0X1Fif(Wreg<=0x1F){//写入命令，TxData[0]=AFE94X_WREG|Wreg;//选择要写入的的寄存器TxData[1]=0x00;//读取写入寄存器TxData[2]=Data;Lpspi_Write(3,TxData);}//寄存器地址大于0X1Felse{//获取CONFIG8寄存器ValueReg_Val=AFE9XX_GetReg(AFE94X_CONFIG8);//写入CONFIG8寄存器地址偏移命令，TxData[0]=AFE94X_WREG|AFE94X_CONFIG8;//选择要写入的的寄存器TxData[1]=0x00;//读取写入寄存器TxData[2]=Reg_Val|0x80;  //SET ADDR_OFFSETLpspi_Write(3,TxData);//写入命令，TxData[0]=AFE94X_WREG|Wreg;//选择要写入的的寄存器TxData[1]=0x00;//读取写入寄存器TxData[2]=Data;Lpspi_Write(3,TxData);//清除MISC_ANA寄存器地址偏移位，TxData[0]=AFE94X_WREG|AFE94X_CONFIG8;//选择要写入的的寄存器TxData[1]=0x00;//读取写入寄存器TxData[2]=Reg_Val&0X7F;  //Clear ADDR_OFFSETLpspi_Write(3,TxData);}    }//写多个芯片寄存器值//StartReg 起始寄存器地址//RegNum 要写的寄存器数量//*Data  寄存器参数传入void AFE9XX_WriteMultiReg(uint8_t StartReg,uint8_t RegNum,uint8_t *Data){    uint8_t TxData[52];    uint8_t i;    //写入命令，    TxData[0]=AFE94X_WREGX;TxData[1]=StartReg;    //选择要写入的的寄存器    TxData[2]=RegNum-1;    for(i=1;i<=RegNum;i++)    {       //将指针数据赋值给Txdata       TxData[2+i]=*Data;       //指向下个数据地址       Data++;    }    //最终发送多少个数据    Lpspi_Write(3+RegNum,TxData);}//读多个芯片寄存器值//StartReg 起始寄存器地址//RegNum 要写的寄存器数量//*Data  寄存器参数传出void AFE9XX_ReadMultiReg(uint8_t StartReg,uint8_t RegNum,uint8_t *Data){    //读取寄存器    uint8_t TxData[24]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};    //读取命令，    TxData[0]=AFE94X_RREGX;TxData[1]=StartReg;    //选择要写入的的寄存器    TxData[2]=RegNum-1;    //最终接收多少个数据    Lpspi_Read(3+RegNum,TxData,Data);}//发送AFE9XX 数据指令 如SDATAC或者RDATAC//详情见头文件command define部分void AFE9XX_Command(uint8_t Com){    uint8_t TxData[1];TxData[0]=Com;    Lpspi_Write(1,TxData);}//测量固有噪声//返回噪声值float AFE9XX_Noise_Test(uint8_t *Rxdata){//set->pga=1 and Input shorted (for offset or noise measurements) uint8_t Chset[]={0X11,0X11,0X11,0X11,0X11,0X11,0X11,0X11,0X11,0X11};uint8_t Txdata[]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};uint32_t AD_Value=0;float Voltage;//停止连续读数据AFE9XX_Command(AFE94X_SDATAC);//PGA_Gain set 1AFE9XX_WriteMultiReg(AFE94X_CH1SET,8,Chset);//singel shot modeAFE9XX_WriteReg(AFE94X_CONFIG4,AFE94X_SHOT_MODE);//SET 250SPSAFE9XX_WriteReg(AFE94X_CONFIG1,0x06);AFE9XX_WriteReg(AFE94X_CONFIG2,0x00);//设置内部基准默认基准2.4VAFE9XX_WriteReg(AFE94X_CONFIG3,INT_REF_EN);//启动转换AFE9XX_Command(AFE94X_START);//连续读数据AFE9XX_Command(AFE94X_RDATAC);while(HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_12));Lpspi_Read(27,Txdata,Rxdata);//select single Channel ValueAD_Value = (Rxdata[3]<<16|Rxdata[4]<<8|Rxdata[5]);//MSB=1->采集数据为负数if((AD_Value>>16)&0X80)        {AD_Value = ~AD_Value;AD_Value = AD_Value&0X7FFFFF;}Voltage = (AD_Value*(2.4/8388607))*1000;return Voltage;}//测量内部测试信号1mv(VREF->2.4V)void AFE9XX_SINGLE_TEST(uint8_t *Rxdata){//Select Test sigleuint8_t Chset[]={0X05,0X05,0015,0X05,0X05,0X05,0X05,0X05,0X05,0X05};uint8_t Txdata[]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};//停止连续数据传输AFE9XX_Command(AFE94X_SDATAC);AFE9XX_WriteMultiReg(AFE94X_CH1SET,8,Chset);AFE9XX_WriteReg(AFE94X_CONFIG2,0x10);//设置内部基准AFE9XX_WriteReg(AFE94X_CONFIG3,INT_REF_EN|AFE94X_REF_2_4V);//启动转换AFE9XX_Command(AFE94X_START);//连续读数据AFE9XX_Command(AFE94X_RDATAC);while(HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_12));Lpspi_Read(27,Txdata,Rxdata);}//电源测量float AFE9XX_PWR_Test(uint8_t *Rxdata){//SET PGA=1 AND uint8_t CHSET[]={0X13,0X13,0X13,0X13,0X13,0X13,0X13,0X13};uint8_t Txdata[]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};uint32_t AD_Value=0;float Voltage;//停止连续读数据AFE9XX_Command(AFE94X_SDATAC);//PGA_Gain set 1AFE9XX_WriteMultiReg(AFE94X_CH1SET,8,CHSET);AFE9XX_WriteReg(AFE94X_CONFIG4,AFE94X_SHOT_MODE);AFE9XX_WriteReg(AFE94X_CONFIG1,0x06);AFE9XX_WriteReg(AFE94X_CONFIG2,0x00);//设置内部基准4VAFE9XX_WriteReg(AFE94X_CONFIG3,INT_REF_EN|AFE94X_REF_4V);//启动转换AFE9XX_Command(AFE94X_START);//连续读数据AFE9XX_Command(AFE94X_RDATAC);while(HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_12));Lpspi_Read(27,Txdata,Rxdata);//select single Channel ValueAD_Value = (Rxdata[3]<<16|Rxdata[4]<<8|Rxdata[5]);if((AD_Value>>16)&0X80)        //MSB=1->采集数据为负数{AD_Value = ~AD_Value;AD_Value = AD_Value&0X7FFFFF;}Voltage = (AD_Value*(4.0/8388607))*1000;return Voltage;}void AFE9XX_DCLEAD_OFF(uint8_t *Rxdata){//Select loff channeluint8_t PGA_Gain[]={0X10,0X10,0X10,0X10,0X10,0X10,0X10,0X10};uint8_t Txdata[]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};//停止连续数据传输AFE9XX_Command(AFE94X_SDATAC);//使能直流导联脱落,设置比较阈值AFE9XX_WriteReg(AFE94X_LOFF,AFE94X_COMP_70_30|FLEAD_DC_LEAD);//内部比较器上电AFE9XX_WriteReg(AFE94X_CONFIG4,AFE94X_COMP_PDEN);//选择使能导联脱离通道AFE9XX_WriteReg(AFE94X_LOFF_SENSN,0XFF);AFE9XX_WriteReg(AFE94X_LOFF_SENSP,0XFF);//设置内部基准AFE9XX_WriteReg(AFE94X_CONFIG3,INT_REF_EN|AFE94X_REF_4V);//启动转换AFE9XX_Command(AFE94X_START);//连续读数据AFE9XX_Command(AFE94X_RDATAC);while(HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_12));Lpspi_Read(27,Txdata,Rxdata);}//读温度传感器//返回温度值℃float AFE9XX_GetTempture(uint8_t *Rxdata){uint8_t PGA_Gain[]={0X14,0X14,0X14,0X14,0X14,0X14,0X14,0X14};uint8_t Txdata[]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};uint32_t AD_Value=0;float Temp_Value;//停止连续读数据AFE9XX_Command(AFE94X_SDATAC);//PGA_Gain set 1AFE9XX_WriteMultiReg(AFE94X_CH1SET,8,PGA_Gain);AFE9XX_WriteReg(AFE94X_CONFIG4,AFE94X_SHOT_MODE);AFE9XX_WriteReg(AFE94X_CONFIG1,0x06);AFE9XX_WriteReg(AFE94X_CONFIG2,0x00);//设置内部基准AFE9XX_WriteReg(AFE94X_CONFIG3,INT_REF_EN|AFE94X_REF_2_4V);//启动转换AFE9XX_Command(AFE94X_START);//连续读数据AFE9XX_Command(AFE94X_RDATAC);while(HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_12));Lpspi_Read(27,Txdata,Rxdata);//select single Channel ValueAD_Value = (Rxdata[3]<<16|Rxdata[4]<<8|Rxdata[5]);if((AD_Value>>16)&0X80)        //MSB=1->采集数据为负数{AD_Value = ~AD_Value;AD_Value = AD_Value&0X7FFFFF;}Temp_Value = (((AD_Value*(2.4/8388607))*1000000-143200)/481)+25;return Temp_Value;}//读单个ADC通道电压值(PGA=1)//AIN_Channel 要读ADC通道//AFE94X_REF 内部基准选择//返回单通道ADC电压值（mv）float AFE9xx_GetValue(uint8_t AIN_CH,uint8_t AFE94X_REF,uint8_t *Rxdata){uint8_t PGA_Gain[]={0X10,0X10,0X10,0X10,0X10,0X10,0X10,0X10};uint8_t Txdata[]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};uint32_t AD_Value=0;float Voltage;//停止连续读数据AFE9XX_Command(AFE94X_SDATAC);//PGA_Gain set 1AFE9XX_WriteMultiReg(AFE94X_CH1SET,8,PGA_Gain);AFE9XX_WriteReg(AFE94X_CONFIG4,AFE94X_SHOT_MODE);AFE9XX_WriteReg(AFE94X_CONFIG1,0x06);AFE9XX_WriteReg(AFE94X_CONFIG2,0x00);//设置内部基准4VAFE9XX_WriteReg(AFE94X_CONFIG3,INT_REF_EN|AFE94X_REF);//启动转换AFE9XX_Command(AFE94X_START);//连续读数据AFE9XX_Command(AFE94X_RDATAC);while(HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_12));Lpspi_Read(27,Txdata,Rxdata);//select single Channel ValueAD_Value = (Rxdata[3+(AIN_CH*3)]<<16|Rxdata[4+(AIN_CH*3)]<<8|Rxdata[5+(AIN_CH*3)]);//MSB=1->采集数据为负数if((AD_Value>>16)&0X80)        {AD_Value = ~AD_Value;AD_Value = AD_Value&0X7FFFFF;}//内部基准选择2.4Vif(AFE94X_REF==AFE94X_REF_2_4V){Voltage = (AD_Value*(2.4/8388607))*1000;}//内部基准选择4Velse if(AFE94X_REF==AFE94X_REF_4V){Voltage = (AD_Value*(4.0/8388607))*1000;}//外部基准else if(AFE94X_REF == EXT_REF_EN){//Voltage = (AD_Value*(LSB)*1000;}return Voltage;}//读多通道ADC电压值（PGA=1）//AFE94X_REF 基准选择// * AFE94X_REF_2_4V // * AFE94X_REF_4V // * AFE94X_EXT_REF//Voltage 返回多通道ADC电压值（mv）void AFE94X_GetAllValue(uint8_t AFE94X_REF,uint8_t *Rxdata,float *Voltage){uint8_t PGA_Gain[]={0X10,0X10,0X10,0X10,0X10,0X10,0X10,0X10};uint8_t Txdata[]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};uint32_t AD_Value=0;//停止连续读数据AFE9XX_Command(AFE94X_SDATAC);//PGA_Gain set 1,MUX Normal inputAFE9XX_WriteMultiReg(AFE94X_CH1SET,8,PGA_Gain);//单次模式AFE9XX_WriteReg(AFE94X_CONFIG4,AFE94X_SHOT_MODE);//设置采样率AFE9XX_WriteReg(AFE94X_CONFIG1,0x06);//设置内部基准AFE9XX_WriteReg(AFE94X_CONFIG3,INT_REF_EN|AFE94X_REF);//启动转换AFE9XX_Command(AFE94X_START);//连续读数据AFE9XX_Command(AFE94X_RDATAC);while(HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_12));Lpspi_Read(27,Txdata,Rxdata);for(int i=0;i<8;i++){AD_Value = (Rxdata[3+(i*3)]<<16|Rxdata[4+(i*3)]<<8|Rxdata[5+(i*3)]); //MSB=1->采集数据为负数if((AD_Value>>16)&0X80)       {AD_Value = ~AD_Value;AD_Value = AD_Value&0X7FFFFF;}//内部基准选择2.4Vif(AFE94X_REF==AFE94X_REF_2_4V){Voltage[i] = (AD_Value*(2.4/8388607))*1000;}//内部基准选择4Velse if(AFE94X_REF==AFE94X_REF_4V){Voltage[i] = (AD_Value*(4.0/8388607))*1000;}//外部基准else if(AFE94X_REF==EXT_REF_EN){//Voltage[i] = (AD_Value*(LSB)*1000;}}}//右腿驱动void TEST_RLD_SINGLE(uint8_t *Rxdata){uint8_t Txdata[]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};uint32_t AD_Value=0;//停止连续读数据AFE9XX_Command(AFE94X_SDATAC);//channel 1-3 PGA_Gain set 1,MUX Normal inputAFE9XX_WriteReg(AFE94X_CH1SET,AFE94X_PGA_1|MUX_Normal_input);AFE9XX_WriteReg(AFE94X_CH2SET,AFE94X_PGA_1|MUX_Normal_input);AFE9XX_WriteReg(AFE94X_CH3SET,AFE94X_PGA_1|MUX_Normal_input);//channel 1-3 connect RLDAFE9XX_WriteReg(AFE94X_RLD_SENSP,0X07);AFE9XX_WriteReg(AFE94X_RLD_SENSN,0X07);AFE9XX_WriteReg(AFE94X_CONFIG3,0X1C);//set channel 4-5AFE9XX_WriteReg(AFE94X_CH4SET,AFE94X_CH_PD|AFE94X_PGA_1|MUX_RLD_DRN);AFE9XX_WriteReg(AFE94X_CH5SET,AFE94X_CH_PD|AFE94X_PGA_1|MUX_RLD_Test);//单次模式AFE9XX_WriteReg(AFE94X_CONFIG4,AFE94X_SHOT_MODE);//设置采样率AFE9XX_WriteReg(AFE94X_CONFIG1,0x06);//设置内部基准AFE9XX_WriteReg(AFE94X_CONFIG3,INT_REF_EN|AFE94X_REF_2_4V );//启动转换AFE9XX_Command(AFE94X_START);//连续读数据AFE9XX_Command(AFE94X_RDATAC);//等待DRDYwhile(HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_12));Lpspi_Read(27,Txdata,Rxdata);}