Bluefruit LE SPI friend not working with ItsyBitsy 32u4

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Zacatzon
 
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Joined: Sat Jun 19, 2021 4:46 pm

Bluefruit LE SPI friend not working with ItsyBitsy 32u4

Post by Zacatzon »

I have been trying to get the Bluefruit LE SPI friend to work with my ItsyBitsy 32u4, however none of the AT commands seem to work, despite the initialization being successful. The wiring is as follows:
Bluefruit -> ItsyBitsy
SCK -> SCK
MISO -> MISO
MOSI -> MOSI
CS -> 8
IRQ -> 7
DFU -> -
RST -> 4
GND -> GND
VIN -> 3V

which is pretty much the wiring suggested.

However trying to run any of the example codes will result in the following output, where the result of the AT commands are repeated backwards question marks:
Output of code
Output of code
Screen Shot 2021-06-19 at 21.43.14.png (28.56 KiB) Viewed 340 times
I have tried disabling the factory reset to see if that was the problem and have found that the issue is with any of the AT commands. I have also tried switching to software SPI, which did not change anything.

The code I used for testing is the example atcommand code, provided in the Bluefruit library.

What is the problem here? Any help is useful.

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adafruit_support_carter
 
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Joined: Tue Nov 29, 2016 2:45 pm

Re: Bluefruit LE SPI friend not working with ItsyBitsy 32u4

Post by adafruit_support_carter »

Just to verify - Do you have the 5V version of the Itsy?
https://www.adafruit.com/product/3677
Or the 3V version?
https://www.adafruit.com/product/3675

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Zacatzon
 
Posts: 2
Joined: Sat Jun 19, 2021 4:46 pm

Re: Bluefruit LE SPI friend not working with ItsyBitsy 32u4

Post by Zacatzon »

I have the 3V version

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