One SPI for LoRa and SD?

ComNets-Bremen / WUSN

MoleNet: A Wireless Underground Sensor Network platform

https://www.molenet.org

GNU General Public License v3.0

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Open jdede opened 4 months ago

jdede commented 4 months ago

Right now, we use two SPI for the SD and the LoRa. Is it possible to use a shared SPI? Please evaluate:

Maybe we can combine MOSI, MISO, SCK of both and get three additional pins for the next board?

B00mb0x commented 4 months ago

Other restrictions? The builtin SDCard library doesn't return the SPI object. So in order to use SD and LoRa on the same SPI you have to either sideload an old SDCard library written in micropython or terminate the SPI connection after each usage.