Picon provides a command shell to Pi Pico which allows user to access most of its peripherals through shell commands.
Picon is built using Pico SDK, and FreeRTOS with SMP support
See Getting Started with the Raspberry Pi Pico for information on how to setup the Pico SDK and your hardware. Once it's done, simply follow these commands:
$ git clone https://github.com/efzedvi/picon --recursive
$ cd picon
$ mkdir build
$ cd build
$ cmake ..
$ make
At this point the image file picon.uf2 is ready be installed on the Pico.
With this current build image two independent consoles are available, one runs on the USB port (available on linux using /dev/ttyACM0), and the other one on the UART port (/dev/ttyUSB0).
Both are configured as 115200 baudrate, 8N1, with no HW or SW flow control.
Enter '?' or 'help' to get a list of available commands.
Current console commands at the moment are:
clear : Clears the terminal screen
date : Displays and sets date and time
free : Shows amount of unused heap memory
lsdev : Lists device files
mem : Peeks/Pokes into memory devices
ps : Lists current tasks
reboot : Reboots the system or goes into BOOTSEL mode
uname : Unit name ; displayes build info
uptime : Shows uptime
echo : Echos its arguments on console
expr : A very simple calculator
primes : Test command ; displays prime numbers for testing the terminal
log : Log command used for debugging
gpio : GPIO handling command
i2c : Command to scan and xfer data to/from I2C devices
env : sets/gets/lists environment variables
pwm : PWM command
adc : ADC comman
More commands and features will be added in future.