Need a "board sanity check" sketch

[terrillmoore]

Many experimenters are using the LMIC for prototyping with new hardware.

It would make sense to add a diagnostic sketch that tests the hardware interface in a simple way, and reports errors in a more intelligible way. The requirements for such a sketch are:

• Check the SPI interface to the radio, by reading the ID register (and by writing something and reading it back).
• Possibly do a stress test on the SPI interface by writing and reading a lot of data.
• Check that the reset pin resets the radio
• If NSS pin is given, confirm that running the SPI without NSS asserted doesn't get a radio response.
• Confirm that interrupt pin is defined and that it's toggling in a sensible way
• Confirm that DIO1 pin is defined, and that it's toggling in a sensible way.
• Do a test transmit
• Do a test receive with timeout (and confirm that we get a timeout)

This will probably give people a much better basis for debugging things.

[delhiryder]

+100 for this enhancement. We've just started playing with the Arduino Feather M0, and I would have been spared a few hours of head scratching if this sketch existed (turns out one or maybe both of the edges of my DIO1 to GPIO6 patch had to re-soldered...).

We would like to have this sketch available to quickly QA check any new hardware we are preparing in our warehouse.

[delhiryder]

Additionally, if there was a starting point for creating such a sketch, we would be happy to contribute it back to the community