Could SPI issues be raised as IOErrors?

[dannystaple]

When there are SPI failures (which I think are mostly down to underpowering the device or needing more ballast capacitors), the system raises a RuntimeError. Just so these can be handled differently (ie got wrong message back, or failed to get acknowledgment), could they be raised as an IOError?

Example:

Adafruit_CircuitPython_ESP32SPI/adafruit_esp32spi/adafruit_esp32spi.py

Line 239 in ef26881

raise RuntimeError("ESP32 timed out on SPI select")

This is so they are distinctly different from the socket type errors, like failed to connect to host (less hardware, more wrong hostname/ip):

Adafruit_CircuitPython_ESP32SPI/adafruit_esp32spi/adafruit_esp32spi_socket.py

Line 77 in ef26881

raise RuntimeError("Failed to connect to host", host)

[tannewt]

IOError is deprecated in CPython. It is now replaced by OSError. I'd be ok switching to it though.

[dhalbert]

Fixed by #164, I would say, right, @dannystaple ? :)