Hello,
Our hardware team accidentally forgot to actually connect DRDY to our MCU. We are wondering if we can work around this, for example by using a timer and the RDATA command (or RDATAC command) to just get the data?
I have tried the obvious of just setting up the timer, configuring the chip, sending START and then sending the RDATAC command and reading data every timer interrupt. I have also tried using the RDATA command.
I unfortunately dont seem to ever get any EEG data. My first byte is 192 (0xC) so I know the chip is working and answering, but I dont get any actual EEG data.
Here are my register configs:
ADS_WREG(CONFIG1, 0x46); //No daisy, low power, no clock output, 250Samples/s
ADS_WREG(CONFIG2, 0x00); //not using test signal
ADS_WREG(CONFIG3, 0xEC); //internal reference, no RLD
ADS_WREG(LOFF, 0x02);
for (int i = 0 ; i < NUMBER_OF_CHANNELS ; i++)
{
ADS_WREG(CH1SET + i, 0x60); //Gain of 12, normal operation
}
ADS_WREG(BIAS_SENSP, 0xFF);
ADS_WREG(BIAS_SENSN, 0xFF);
//skip LOFF_SENSP
//skip LOFF_SENSN
//skip LOFF_FLIP
ADS_WREG(GPIO,0xF0); //led on
ADS_WREG(MISC1,0x00);
Do you have any suggestions, is this even possible? Perhaps I need to put the chip into single-shot mode? Thanks!