STM32L151控制ADS1262实现电压采集程序 -

//读寄存器
void ADS1262ReadRegister(int StartAddress, int NumRegs, unsigned char *pdata)
{
int i;
DACNCSS(0);
SPI_DAC_SendByte(0x20 + StartAddress);
SPI_DAC_SendByte(NumRegs - 1);
for( i=0;i<NumRegs;i++)
{
pdata[i] = SPI_DAC_SendByte(0x00);
}
DACNCSS(1);
}
//写寄存器
void ADS1262WriteRegister(int StartAddress, int NumRegs, unsigned char * pdata)
{
int i;
DACNCSS(0);
SPI_DAC_SendByte(0x40+StartAddress);
SPI_DAC_SendByte(NumRegs-1);
for( i=0;i<NumRegs;i++){
// GPIO_SetBits(GPIOE,GPIO_Pin_13);
SPI_DAC_SendByte(pdata[i]);
// GPIO_ResetBits(GPIOE,GPIO_Pin_13);
}
DACNCSS(1);
}
//读数据
int32_t ADS1262ReadData(uint8_t NumBytes, uint8_t DataByteStartNum)
{
// assert((4 == NumBytes) || (5 == NumBytes) || (6 == NumBytes)); //Aborts program if FALSE
// assert((0 == DataByteStartNum) || (1 == DataByteStartNum)); //Aborts program if FALSE
uint8_t ADC_Bytes[6]; //Holds
int32_t ADC_Data_Only;
int i;
DACNCSS(0);
for( i = 0; i < NumBytes; ++i)
ADC_Bytes[i] = SPI_DAC_SendByte(0);
ADC_Data_Only = ((int32_t)ADC_Bytes[DataByteStartNum + 0] << 24) | //Data MSB
((int32_t)ADC_Bytes[DataByteStartNum + 1] << 16) |
((int32_t)ADC_Bytes[DataByteStartNum + 2] << 8) |
((int32_t)ADC_Bytes[DataByteStartNum + 3] << 0); //Data LSB
DACNCSS(1);
return ADC_Data_Only;
}
/* Configure Register Settings */
//配置AD寄存器
void LoadInitRegSettings(void)
{
uint8_t AdcRegData[ADS126x_NUM_REG]; //Stores the register read values
uint8_t WriteRegData[ADS126x_NUM_REG]; //Stores the register write values
ADS1262ReadRegister(ID, ADS126x_NUM_REG, AdcRegData); //Read ALL registers
/* Configure Register Settings */
WriteRegData[ID] = AdcRegData[ID]; //ID
WriteRegData[POWER] = 0x11; //POWER (RESET = 0, INTREF = 1)
WriteRegData[INTERFACE] = INTERFACE_DEFAULT_VALUE; //INTERFACE (STATUS & CRC bytes ON)
WriteRegData[MODE0] = 0x13; //MODE0 (0x14 chop on;0x04 chop off)
WriteRegData[MODE1] = 0x00; //MODE1
WriteRegData[MODE2] = 0x84; //MODE2 (0x04 PGA on;0x84 PGA off )
WriteRegData[INPMUX] = 0x01; //INPMUX (AINP1 = AIN1, AINN1 = AIN2)
WriteRegData[OFCAL0] = 0x00; //OFCAL0 (reset to default)
WriteRegData[OFCAL1] = 0x00; //OFCAL1 (reset to default)
WriteRegData[OFCAL2] = 0x00; //OFCAL2 (reset to default)
WriteRegData[FSCAL0] = 0x00; //FSCAL0 (reset to default)
WriteRegData[FSCAL1] = 0x00; //FSCAL1 (reset to default)
WriteRegData[FSCAL2] = 0x40; //FSCAL2 (reset to default)
WriteRegData[IDACMUX] = MUX2_NO_CONM | MUX1_AINCOM; //IDACMUX (IDAC1MUX = AINCOM)
WriteRegData[IDACMAG] = IDACMAG_DEFAULT_VALUE; //IDACMAG (IDAC1MAG = 500 uA)
WriteRegData[REFMUX] = REFMUX_DEFAULT_VALUE; //REFMUX (REFP = AIN0, REFN = AIN3)
WriteRegData[TDACP] = TDACP_DEFAULT_VALUE; //TDACP (reset to default)
WriteRegData[TDACN] = TDACN_DEFAULT_VALUE; //TDACN (reset to default)
WriteRegData[GPIOCON] = GPIOCON_DEFAULT_VALUE; //GPIOCON (Enable GPIOs on AIN8 & AIN9)
WriteRegData[GPIODIR] = GPIODIR_DEFAULT_VALUE; //GPIODIR (reset to default)
WriteRegData[GPIODAT] = GPIODAT_DEFAULT_VALUE; //GPIODAT (Biases bridge with + polarity)
#ifdef ADS1263
WriteRegData[ADC2CFG] = REF2_AIN4_AIN5 | GAIN2_2; //ADC2CFG (REF2 = AIN4/AIN5, GAIN2 = 2 V/V)
WriteRegData[ADC2MUX] = MUXP2_AIN6 | MUXN2_AIN7; //ADC2MUX (AINP2 = AIN6, AINN2 = AIN7)
WriteRegData[ADC2OFC0] = ADC2OFC0_DEFAULT_VALUE; //ADC2OFC0 (reset to default)
WriteRegData[ADC2OFC1] = ADC2OFC1_DEFAULT_VALUE; //ADC2OFC1 (reset to default)
WriteRegData[ADC2FSC0] = ADC2FSC0_DEFAULT_VALUE; //ADC2FSC0 (reset to default)
WriteRegData[ADC2FSC1] = ADC2FSC1_DEFAULT_VALUE; //ADC2FSC1 (reset to default)
#endif
ADS1262WriteRegister(ID, ADS126x_NUM_REG, &WriteRegData[0]); //Write ALL registers
//#ifdef CONSOLE_OUTPUT
// show_parms('0'); //read back registers and output to console
//#endif
}

复制代码