I recently acquired a CN0540 board and want to use it in my project to measure sensor data from PCB's 393A03 and 393B12 accelerometers. However, I'm using ESP32-S3 microcontrollers, which are not compatible with the board.
The thing is, I don't require much configuration of the board itself, I only wish to measure acceleration with a 200Hz maximum sampling frequency, convert using a 24 bit ADC and store the measurement values in an SD card, so I believe the default settings should do it, but I could be wrong.
Currently, I'm only connecting the ESP32 to the following pins on top of the board:
-3.3V and GROUND
-SPI interface (CS_ADC, DOUT, SDI and SCLK);
All the remaining pins, including the ones at the bottom of the board, are disconnected.
I am capable of reading and writing register values from the AD7768-1, but attempting to read the 24 bit data register only results in the value 128.00, even after connecting the sensor via SMA to the CN0540 board, which indicates that it isn't working. Moreover, in the board itself, only two LEDs light up, the FAULT LED (red) and the CC LED (blue). I know that the POWER LED (green) should also be on, but it isn't.
With this in mind, my question is: can I use this method to interface with the CN0540 board and obtain sensor data with 24 bits resolution? If yes, what connections am I missing? If not, is my only alternative buying one of the supported boards?
I hope someone can help me out!