Multiple SPI Devices with Flutter

[andrewsc4]

The Flutter code appears to use an SPI interface internally for the radio. Is it possible to use the same interface with other devices and not conflict with Flutter's use? The Atmel chip supports multiple instances of SPI with different CS pins, but they appear to be in use for other purposes.

Finally, there is SPI code in the Flutter library. Is it modified from the SPI code that is normal with Arduino?

I would like to hook up both an SDHC card and a network connection, both of which are frequently interfaced via SPI.

[mjs513]

Know this is old but did you ever get this working

[andrewsc4]

I got it working using the Software SPI, although I believe that the hardware could be made to work. The biggest problem that I ran into was that many SDHC card readers are poorly behaved and the MISO line doesn't tri-state, which keeps it from behaving well with anything.

[mjs513]

Thanks for getting back to me on this, thought I was alone.

I kind of gave up using the hardware SPI. The only way I got my BME280 and MPU9250 sensor working was with software SPI. Never did my SDHC card reader to work. Will try that next. What library are you using for that, SDfat?

I found a library that does software SPI and works as well. It can get modified so it has all the same functions as SPI, then all you would have to do in any libraries you are working on is to change SPI to spi. Minimal effort

Thanks
Mike