Pico-PMOD-ExtBoard

Introduction
Feature
How to Use
- Serial
- SWD
How to Compile
Product Link
Reference

Pico PMOD ExtBoard Introduction

Pico PMOD ExtBoard is a user-friendly expansion board for Pico launched by MuseLab. The ExtBoard leads all GPIOs of Pico with PMOD standard, and the pico is connected with SWD download interface and serial port provided by onboard debugger DAPLink, which can be easily used for program & test of Pico.

Feature

Standard PMOD interface
USB CDC Serial port
SWD
TYPE-C for power & debug

How to Use

Serial

DAPLink	Pico
GND	GND
PA9/UART1_TX	GP17/UART0_RX
PA10/UART1_RX	GP16/UART0_TX

under Linux, you can use the minicom or picocom to open the serial port, for example：

$sudo apt install minicom
$minicom -b 115200 -o -D /dev/ttyACM0

$sudo apt install picocom
$picocom -b 115200 /dev/ttyACM0

SWD

Pico's onchiprom program implements a USB disk with drag-and-drop burning function, However, in some development scenarios, if you need to frequently modify the code and test, you need to repeatedly power down Pico, hold down the button and power up again, and wait for the USB enumeration to complete before you can drag and drop, which is a slightly tedious process. In fact, the Pico can be programmed & debugged through the SWD interface with the openocd, no need to re-power the Pico, just enter a command to complete, the detail is described as follows

install openocd

$ cd ~/pico
$ sudo apt install automake autoconf build-essential texinfo libtool libftdi-dev libusb-1.0-0-
dev
$ git clone https://github.com/raspberrypi/openocd.git --recursive --branch rp2040 --depth=1
$ cd openocd
$ ./bootstrap
$ ./configure --enable-cmsis-dap
$ make -j4
$ sudo make install

This repository has wrapped the command into scripts, after importing the environments variables, you can call the script in any path, note that the format of the burn suffix is hex or bin, not the drag and drop uf2 file
```
$cd pico-lab/tools
$. ./env.sh
$dfw xxx.hex/xxx.bin
```

How to Compile

$cd tools && source env.sh && cd -
$cd software/infones
$mkdir -p build && cd build
$cmake ..
$make -j
$dfw infones/pico_infones.bin
$dreset

Product Link

Pico-PMOD-ExtBoard

Reference

wuxx / pico-lab

readme