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ADS1298: No ECG data

Bogdan-Mihail Dumitrescu
Prodigy 20 points
Part Number: ADS1298


Tool/software:

Hi,

I am trying to read ECG data with an STM32 NUCLEO 767ZI sent by an Contec MS400 patient simulator. 

I can confirm that the ADS1298 developer board we have is functional by receiving the correct ID, and I know it has worked before in a different setup. However, at the beginning of the SPI transaction I also see the CONFIG1 register, whose address is right after the address of the ID. I was previously advised to ignore it but I can't figure out if it is part of the reason why I am not reading ECG data

I am trying to read ECG data but there is no data coming from the ADS1298 on the MISO line. I could send the code over email if necessary.

  • 0
    TI__Guru 66906 points

    Hi Bogdan,

    Please excuse our delay. Do you still need help with this issue?

    The first thing I would check is whether you are seeing the /DRDY output signal toggling at the configured data rate. This would require an active master clock input, and that the START pin be high or START SPI command be sent to the device.

    Regards,

    Ryan