Not as on-topic as I would like, but I suspect that some of you here might know something useful.
I am trying to interface an ADS1256 board to an Arduino. https://www.ebay.co.uk/itm/19242863594 Sometimes it almost works... It will often sit there reading all-zeros then suddenly appear to work, to an extent. But I don't seem to be able to configure it for single-ended so suspect that the programming instructions are not getting through. The fact that the data output comes and goes makes me suspect that the SPI comms is iffy. The connection runs via the IO pins of an Arduino Nano,rather than using the ICSP connector. If I touch the ICSP connector on the Nano with my finger then the data switches to 0xFFFFFF So, I am wondering if the SPI bus needs to be terminated or something? Also, the board has 100 Ohm resistors in series with all digital IO, but the ADS1256 data sheet only shows 100R resisitors on the input channels. Is this likely to be worth changing? I have used other SPI devices with the Nano, and have not had these problems. I have also tried with a full-size Arduino, with equally limited success. Any tips for robustification of SPI comms? -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1916 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
