portentax8-m4-proxy

How-to-use

• Compile and upload PortentaX8_EchoServer

arduino-cli compile -b arduino:mbed_portenta:portenta_x8 -v libraries/RPC/examples/PortentaX8_EchoServer -u

• Build the Go example application and upload to Portenta X8

cd example
GOOS=linux GOARCH=arm64 go build
adb push example /home/fio

• Login your Portenta X8 and execute the example application

adb shell
./example

• On your PC open a terminal via the Portenta X8's tty/ACMx serial interface and interact with the M4 sketch

ll /dev/serial/by-id/*
lrwxrwxrwx 1 root root 13 Jän 19 07:43 /dev/serial/by-id/usb-Arduino_Portenta_X8_2D16BA09DAB6FAD9-if02 -> ../../ttyACM0
minicom -D /dev/ttyACM0
...

How-to-debug

Note: the proxy is built into the Yocto image via this recipe. Should it become necessary to debug and build a custom version you can also build it on your PC and then push and execute it on the Portenta X8.

cd proxy
GOOS=linux GOARCH=arm64 go build
adb push proxy /home/fio

Before starting the locally built proxy make sure that the one automatically started as a service is disabled.

ps -A | grep m4_proxy             
   3159 pts/0    00:05:17 m4_proxy
sudo killall m4_proxy
sudo ./proxy