RE: nrf5340 SDK1.80 Unable to read Registers on Controller IC Over SPI Bus

Øivind — Thu, 07 Apr 2022 12:16:27 GMT

Could I get a logic trace focused on just the command, it's a little hard to see the command is relation to the clock pulses.
But from what I can see the command isn't being sent correctly, and maybe that the hold time on the command bits is too long.

I also am not sure about the nrf_gpio_pin_clear() and nrf_gpio_pin_set() calls in ads124s08_reg_read() in ads124s08_spi.c.
I haven't seen that done before. The transceive function should be able to handle the CS itself.
Is there a reason you added those?

RE: nrf5340 SDK1.80 Unable to read Registers on Controller IC Over SPI Bus

Øivind — Thu, 07 Apr 2022 10:10:57 GMT

Hi,

In situations like this it's usually one of

1. That the command being sent isn't correct

2. That the peripheral isn't wired correctly to the board

3. That the peripheral isn't functioning properly.

I'll take a look at the logic trace and datasheet, and let you know what I find out.