Hello TI community,
We are evaluating the ADS1298 converter for our product. We've managed to establish the connection with the board using SPI interface driven by AVR32 microcontroller.
It took a while before we could read the test signals - it was not possible to use the default settings and only change the channels input type.
Shortly, if I set the registers with the following values:
CONFIG1 (0x01): 0x85 or 0x06 (default)
CONFIG2 (0x02): 0x10 (default is 0x0)
CONFIG3 (0x03): 0xDC (default is 0x40)
LOFF (0x04): 0x03 (default is 0x0)
and all the channels to test signal (0x05) - I get nice test signal. If I now switch the channels back to the normal input (0x0), I don't see the signals I am feeding the ADS1298 with. We are using the LionHeart 2 patient simulator that can generate ECG-like signals with the real-life amplitudes.
My question is - which registers should I change to enable the ECG reading? If we use the ADS1298/8R EVM evaluation software, the ECG traces are read. Using the same registers settings in our software gives no results.
We've also checked the SPI communication with an oscilloscope - everything looks well, only the ADS1298 is not sending reasonable data back.
Any help will be greatly appreciated.
Best regards,
Mike