Hello, how is this community Radxa?
I am developing on a Radxa E25 V.1.4. But I’m having a few problems with using the GPIO pins to communicate with other devices. The OS I’m using is ubuntu server 20.04 LTE.
I’m enabling the UARTs in the path file /boot/config.txt by adding the uarts with “overlays=” to the device tree.I am guiding myself with the tutorial: https://wiki.radxa.com/Device-tree-overlays
dtoverlay=rk3568-fiq-debugger-uart2m0
dtoverlay=rk3568-disable-npu
dtoverlay=rk3568-uart3-m0
dtoverlay=rk3568-uart5-m1
dtoverlay=rk3568-uart7-m1
The problem is that I save the configuration and restart the device, but the uarts are not activated. To verify that the uarts are active, I go to the /dev path and check all the available devices.
I am using minicom to be able to communicate with other devices and it does not recognize the ttyS3 or the ones that have been activated.
How can I use the uart pins on the E25 and also the other communication pins such as CAN, SPI and I2C.