Sensirion Differential Pressure Sensor SDP8x Digital Driver

Getting Started

Create an sdp8x_handler_t instance in main. Implement the *sdp8x_transmit, *sdp8x_receive, and *delay functions in main. Call sdp8x_init().

Put this in your super loop in main. i2c_xfer_done should be a flag set to true in your I2C event handler.

if(i2c_xfer_done) {
    sdp8x_read_data(&sdp8x); // sdp8x is your sdp8x_handler_t instance
    i2c_xfer_done = false;
}

Communicating With The Sensor

The SDP8x Digital sensor uses an I2C interface, the address is 0x25. The *sdp8x_transmit and *sdp8x_receive functions should use I2C. The functions for retrieving data from the sensor are defined in the sdp8x_digital.h file. Use pullups on the SCL and SDA lines.

Debug Output

A precompiler directive is used to turn debug output on and off. Currently all of the outputs are using NRF_LOG_INFO which is a Nordic nRF5 SDK specific function, change these to printf or whatever your micro environment uses.