Radxa Zero 3W - MRAA "No Pins"

#1

Hi

I have just received delivery of a couple Zero 3W’s which I believe have the most recent version of the Wi-Fi/BT chip (Wi-Fi 6).

I have downloaded and installed the latest available version of the OS for use on this board and Wi-Fi chip.

OS Version – radxa-zero3_debian_bullseye_xfce_b6.img
Build - Linux radxa-zero3 5.10.160-26-rk356x

Everything seems to work well with the exception of the GPIO pins.

From a fresh install and after doing the following as per the instructions MRAA installs but has no access to the GPIO pins.

sudo apt-get update
sudo apt-get install libmraa2 libmraa-dev libmraa-java python3-mraa mraa-tools
sudo mraa-gpio version returns “Version v2.2.0 on Unknown platform”
sudo mraa-gpio list returns “No Pins”

Doing the exact same procedure on a Radxa 4C+ works as expected (also on Bullseye and MRAA v2.2.0).

I have also tried OS version – radxa-zero3_debian_bullseye_xfce_b4.img but this gives the same results.

Is there an issue with the OS or is it MRAA as it doesn’t even recognise the platform?

I would greatly appreciate some advice to help me resolve this problem?

Kind regards

Bob

#2

The Zero3 is “too new”, your version of mraa seems doesn’t supports it (“Unknown platform”). However, there seems to be support in nascs fork:

Hence, either wait until it is merged into radxa’s official version, or build libmraa yourself from this fork.

Problem of synchronized miraa lib with radxa zero 3w
#3

Thank you XT3, that has done the trick.

I compiled the fork you suggested on OS version ‘radxa-zero3_debian_bullseye_xfce_b6.img’ and I have access to the GPIO pins now. Tested GPIO, PWM and I2C.

Also thanks to nascs for updating the library.

Kind regards

#4

please can i give me more detail about process and description of instruction for solved problem (MRAA “No Pins”) i work in the some os and card radxa zero 3w