Pza Emulator for hanmatek/hm310t power supply

The main goals of this emulator are:

• to provide the exact same USB interface that the hanmatek/hm310t power supply.
• to run on a RaspberryPi Pico H to be cheap and easily integrated on a test bench.

Why not virtual USB interfaces ?

To have a solution independent from OS and their implementation specificities

Firmware logic

Build and run project

This project has a github actions workflow that build the Pico firmware. The firmware can be download and copy on the Pico in bootsel mode.

Otherwise, the project can be build with the following commmand :

mkdir build
cd build
cmake ..
make
cp file_name.uf2 /media/<user>/RPI-RP2/

Run test

Method 1. With Modbus (No Panduza)

Get the tty port of the pico in /dev.

Modify the port in tests/rsc/Client.py file

self.master = ModbusSerialClient(framer=ModbusRtuFramer, port = '/dev/<pico_tty_port>', stopbits=1, bytesize=8, parity='N', baudrate=115200)

Execute :

cd tests/robot
sudo chmod 777 /dev/<pico_tty_port>
robot psu.robot

Method 2. With Panduza plateform

Start Panduza plateform (panduza-py)

Run :

python3 client.py