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2-Channel RS232 Module For Raspberry Pi Pico, SP3232EEN Transceiver, UART To RS232.
When connecting PICO, please pay attention not to connect in the opposite direction. The direction can be judged by observing the USB screen printing end of the module and the USB interface of the Pico (also can be judged by the pin label of the platoon master on the module and the pin label of the Pico).
You can also wire it according to the table below:
RS485 | Pico | Description |
VCC | VSYS | Power input |
GND | GND | Ground |
TX_CH0 | GP0 | UART transmit pin |
RX_CH0 | GP1 | UART receive pin |
TX_CH1 | GP4 | UART transmit pin |
RX_CH1 | GP5 | UART receive pin |
The connection of the RS485 board is the same as the Pico-2CH-RS232.
To setup the Pico for working, please refer to the official guide: https://www.raspberrypi.org/documentation/pico/getting-started/
Open a terminal and run the follow command
sudo apt-get install p7zip-full cd ~ sudo wget https://www.waveshare.com/w/upload/6/6a/Pico_2CH_RS232_Code.7z 7z x Pico_2CH_RS232_Code.7z -o. cd ~/Pico_2CH_RS232_Code cd C/build/
To compile, make sure you are in the c directory:
cd ~/Pico_2CH_RS232/C/
Create the build folder and add the SDK path to it:
By default, the ../../pico-sdk is the path of SDK.
We have created the build folder in examples, you can just enter it.
Note: If the actual path of your Pi is different, you need to write the correct path.
cd build export PICO_SDK_PATH=../../pico-sdk
Run the cmake to generate Makefile file.
cmake ..
Run the make command to build the codes and generate an executable file.
make -j9
After building, an uf2 file is generated. Press and hold the key on the Pico board to connect the Pico to the Raspberry Pi's USB port via the Micro USB cable, then release the key. Once connected, Raspberry will automatically recognize a removable disk (RPI-RP2). Copy the file main.uf2 in the corresponding folder to the recognized removable disk (RPI-RP2).
cp main.uf2 /media/pi/RPI-RP2/
This demo provides a simple program...
If your Thonny doesn't support Pico, you can update it with the following command:
sudo apt upgrade thonny