ADC Differential Pi Library for C++

C++ Library to use with ADC Differential Pi Raspberry Pi development board.

The example CPP files can be found in /ABElectronics_CPP_Libraries/ADCDifferentialPi/demos

Downloading and Installing the library

To download to your Raspberry Pi type in the terminal:

git clone https://github.com/abelectronicsuk/ABElectronics_CPP_Libraries.git

Classes:

ADCDifferentialPi(uint8_t address1, uint8_t address2, uint8_t rate)

Parameter: address1 - I2C address of ADC chip 1. 0x68 to 0x6F
Parameter: address2 - I2C address of ADC chip 2. 0x68 to 0x6F
Parameter: rate - Bit rate for ADC sampling. 12, 14, 16 or 18

Methods:

read_voltage(uint8_t channel) 

Read the voltage from the selected channel
Parameter: channel - 1 to 8
Returns: (double) number between -2.048 and +2.048

read_raw(uint8_t channel) 

Read the raw value from the selected channel
Parameter: channel - 1 to 8
Returns: (uint32_t) raw number

set_pga(uint8_t gain)

Set the gain of the PGA on the chip
Parameter: gain - 1, 2, 4, 8
Returns: null

set_bit_rate(uint8_t rate)

Set the sample bit rate of the ADC
Parameter: rate - 12, 14, 16, 18
12 = 12 bit (240SPS max)
14 = 14 bit (60SPS max)
16 = 16 bit (15SPS max)
18 = 18 bit (3.75SPS max)
Returns: null

set_conversion_mode(uint8_t mode)

Set the conversion mode for the ADC
Parameter: mode - 0 = One-shot conversion, 1 = Continuous conversion
Returns: null