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ADS1256: ADS1256 Design Verification

sagar m
Prodigy 125 points
Part Number: ADS1256

Hi Team,

Can you please help us to verify the ADS1256 interface. Attached ADS1256 Circuit.

I have interfaced the Waveshare ADS1256 Development kit with Raspberry Pi, I can Able to read the ADC values.

But with my custom board am facing SPI communication issues, can't able to read the ADC.I have followed Waveshare DK schematics as a reference. 

Refernce: https://www.waveshare.com/w/upload/2/29/High-Precision-AD-DA-board.pdf

Thanks

Sagar

  • 0
    Prodigy 125 points

    Part Number: ADS1256

    Hello guys,

    In my project i am using ADS1256 with RPI , i can able to read the adc values with ADS1256 development board with RPI CM4 but i couldn't read the adc values with custom board which is designed from our team. it shows me ID read failed. i have used the source code which is provided from the Waveshare, in the code ID used is 3 but when i run the code iID printed as 15 and ID read is failed. the hardware design and all is done with  the reference of :   https://www.waveshare.com/w/upload/2/29/High-Precision-AD-DA-board.pdf   .

    so please help me to resolve this problem.

    regards,

    sagar m 

  • 0 in reply to sagar m
    TI__Mastermind 46131 points

    Hi Sagar,

    What are the differences between your board and the board that worked? If the firmware worked on one board it is likely that there is a hardware issue.

    -Bryan

  • 0 in reply to Bryan Lizon86
    Prodigy 125 points

    hello bryan,

    thanks for your reply actually in ADS1256 kit i have used waveshare source code itself  but it worked for on board potentiometer and LDR with chip select pin what they mentioned and i changed CS,RESET and DRDY pin number to other RPI gpio pins then it showed me ID read failed .

    i don't know what to do any hints to resolve this issue??.

  • +1 in reply to sagar m
    TI__Mastermind 46131 points

    Hi Sagar,

    Have you reached out to Waveshare customer support for help on this issue? It sounds like the ADS1256 is working fine, but there is some issue with the new board (compared to the Waveshare board) and the firmware (which belongs to Waveshare). So I am not sure how I can help you here.

    -Bryan