RA8875 question

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loucrem
 
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RA8875 question

Post by loucrem »

Im using an Adafruit RA8875. When I connect it to an Arduino Pro Mini, it works. When I connect it to a Feather M0, it says "RA8875 not found" on the serial monitor. The connections in both instances are correct, Ive checked and rechecked many times. Sck ,MISO, and MOSI are all connected properly as are the CS, Reset, and Interrupt.
Both boards, the code compiled and no errors were shown.
Does the library only work properly with AVR boards?
Any help would be appreciated.

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loucrem
 
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Re: RA8875 question

Post by loucrem »

I forgot to add, I'm using the RA8875 build test sketch example

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MakerMelissa
 
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Re: RA8875 question

Post by MakerMelissa »

It's supposed to work on a Feather M0. It's possible some recent updates have broken it. See if lowering the clock speed helps at all. It's possible the code isn't compensating the correct clock speed for that specific processor and I'm wondering if that's the issue.

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loucrem
 
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Re: RA8875 question

Post by loucrem »

So I had no luck with the feather but I was able to get it to work with an itsy bitsy M0. When I said I was using a feather M0, I was actually using a Feather M0 Radio with RFM69 Packet Radio. I know the RA8875 does not tri-state the MISO pin without a 74HC125. I never thought to think that the radio on the feather would conflict with it. Could that be what's going on? Does the packet radio use the same MISO as the RA8875?

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MakerMelissa
 
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Re: RA8875 question

Post by MakerMelissa »

Yes, they use the same SCK and MISO pins, so that's definitely possible.

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