def ADS1256_Read_data(self, reg):
config.digital_write(self.cs_pin, GPIO.LOW) #cs 0
config.spi_writebyte([CMD['CMD_RREG'] | reg, 0x00])
data = config.spi_readbytes(1)
config.digital_write(self.cs_pin, GPIO.HIGH) #cs 1
return data
def ADS1256_ConfigADC(self, gain, drate):
self.ADS1256_WaitDRDY()
buf = [0, 0, 0, 0]
buf[0] = (0 << 3) | (1 << 2) | (0 << 1)
buf[1] = 0x08
buf[2] = (0 << 5) | (0 << 3) | (gain << 0)
buf[3] = drate
config.digital_write(self.cs_pin, GPIO.LOW) #cs 0
config.spi_writebyte([CMD['CMD_WREG'] | 0, 0x03])
config.spi_writebyte(buf)
config.digital_write(self.cs_pin, GPIO.HIGH) #cs 1
config.delay_ms(1)
def ADS1256_Read_ADC_Data(self):
self.ADS1256_WaitDRDY()
config.digital_write(self.cs_pin, GPIO.LOW) #cs 0
config.spi_writebyte([CMD['CMD_RDATA']])
buf = config.spi_readbytes(3)
read = 0
read = (buf[0] << 16) & 0xff0000
read |= (buf[1] << 8) & 0xff00
read |= (buf[2]) & 0xff
config.digital_write(self.cs_pin, GPIO.HIGH) #cs 1
if (read & 0x800000):
read |= 0xFF000000
return read
def ADS1256_WriteReg(self, reg, data):
config.digital_write(self.cs_pin, GPIO.LOW) #cs 0
config.spi_writebyte([CMD['CMD_WREG'] | reg, 0x00, data])
config.digital_write(self.cs_pin, GPIO.HIGH) #cs 1
def ADS1256_WriteCmd(self, reg):
config.digital_write(self.cs_pin, GPIO.LOW) #cs 0
config.spi_writebyte([reg])
config.digital_write(self.cs_pin, GPIO.HIGH) #cs 1
def ADS1256_reset(self):
config.digital_write(self.rst_pin, GPIO.HIGH)
config.delay_ms(200)
config.digital_write(self.rst_pin, GPIO.LOW)
config.delay_ms(200)
config.digital_write(self.rst_pin, GPIO.HIGH)