Hi,
Im trying to connect MCP25625 via SPI on nrf52. I checked with the scope that CS, MOSI and SCK are correct, but I get no reply on MISO line whatsoever. I perform a very easy operation:
- Reset - send 1 byte data
- Read register - send 3 bytes.
Any ideas what to check? i have 2 custom boards and they both have the same issue.
OSC2 waveform
3-byte command bitbanging SCK and MOSI lines