SAMD51 SPI Slave Mode

[gingle]

I would like to use the Metro M4 as a remote controller run by a master microcontroller. I need to read A/D results and send D/A levels as well as set logic pins. I am worried that the I2C and RX/TX lines are not fast enough and perhaps not as free from errors.

[tannewt]

@gingle It's not a high priority for us but we'd love a PR if you implement it yourself. We're also happy answering questions to get you started on it. I'd suggest looking at I2CSlave as a model for it.

[gingle]

Can you point me to the I2CSlave code?

[tannewt]

https://github.com/adafruit/circuitpython/tree/master/ports/atmel-samd/common-hal/i2cslave
https://github.com/adafruit/circuitpython/tree/master/shared-bindings/i2cslave

Want me to reopen? It's still ok to leave open for the long term.

[gingle]

I would leave it open for the long term. I have a lot on my plate so my work on this will be intermittent. Thanks for the links.

[tannewt]

Ok, reopened! No worries if it takes time. Please reach out if you have questions! Thanks!

[wallarug]

@gingle have you made any progress on this? I'm very interested in getting this going.

[gingle]

@gingle have you made any progress on this? I'm very interested in getting this going.

Not for now. I have been sidetracked for awhile.

[Meschmid23]

I also would like to use the SAMD51 (Adafruit feather M4) as a SPI slave. Please let us know once progress has been made.