3-IN-1 fast USB ARM/ESP32 JTAG, USB-to-RS232 virtual port and power supply 5-9-12VDC device (supported by OpenOCD ARM debugger software). Official reference can be found here.
You can configure debugging tool using debug_tool option in “platformio.ini” (Project Configuration File):
[env:myenv]
platform = ...
board = ...
debug_tool = olimex-arm-usb-ocd
If you would like to use this tool for firmware uploading, please change upload protocol:
[env:myenv]
platform = ...
board = ...
debug_tool = olimex-arm-usb-ocd
upload_protocol = olimex-arm-usb-ocd
More options:
macOS contains default FTDIUSBSerialDriver driver which conflicts with debug tools which are based on this chip. FTDI Chip company recommends removing this default driver from a system. Everything should work after system rebooting. See detailed instruction in official application note (Page 16, Section 4: Uninstalling FTDI Drivers on OS X) AN134: FTDI Drivers Installation guide for MAC OS X
Please install “udev” rules 99-platformio-udev.rules. If you already installed them before, please check that your rules are up-to-date or repeat steps.
Olimex ARM-USB-OCD JTAG 20-Pin Connector  | 
Board JTAG Pin  | 
Description  | 
|---|---|---|
1  | 
VCC  | 
Positive Supply Voltage — Power supply for JTAG interface drivers  | 
4  | 
GND  | 
Digital ground  | 
5  | 
TDI  | 
Test Data In pin  | 
7  | 
TMS  | 
Test Mode State pin  | 
9  | 
TCK  | 
JTAG Return Test Clock  | 
13  | 
TDO  | 
Test Data Out pin  | 
3  | 
RESET  | 
Connect this pin to the (active low) reset input of the target CPU (EN for ESP32)  | 
Name  | 
Description  | 
|---|---|
The CHIPS Alliance develops high-quality, open source hardware designs relevant to silicon devices and FPGAs.  | 
|
Espressif Systems is a privately held fabless semiconductor company. They provide wireless communications and Wi-Fi chips which are widely used in mobile devices and the Internet of Things applications.  | 
|
Kendryte K210 is an AI capable RISCV64 dual core SoC.  | 
|
SiFive brings the power of open source and software automation to the semiconductor industry, making it possible to develop new hardware faster and more affordably than ever before.  | 
Name  | 
Description  | 
|---|---|
Arduino Wiring-based Framework allows writing cross-platform software to control devices attached to a wide range of Arduino boards to create all kinds of creative coding, interactive objects, spaces or physical experiences  | 
|
ESP-IDF is the official development framework for the ESP32 and ESP32-S Series SoCs.  | 
|
FreeRTOS is a real-time operating system kernel for embedded devices that has been ported to 40 microcontroller platforms  | 
|
Open Source Software for Developing on the SiFive Freedom E Platform  | 
|
Kendryte SDK with FreeRTOS support  | 
|
Kendryte Standalone SDK without OS support  | 
|
Simba is an RTOS and build framework with aims to make embedded programming easy and portable  | 
|
The WD Firmware package contains firmware applications and Processor Support Package (PSP) for various cores, alongside demos which support all features  | 
|
The Zephyr Project is a scalable real-time operating system (RTOS) supporting multiple hardware architectures, optimized for resource constrained devices, and built with safety and security in mind  | 
Note
For more detailed board information please scroll tables below by horizontal.
Name  | 
Platform  | 
Debug  | 
MCU  | 
Frequency  | 
Flash  | 
RAM  | 
|---|---|---|---|---|---|---|
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
16MB  | 
520KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32S2  | 
240MHz  | 
4MB  | 
320KB  | 
||
On-board  | 
FE310  | 
450MHz  | 
16MB  | 
256MB  | 
||
External  | 
ESP32  | 
240MHz  | 
3.25MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
3.25MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
On-board  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32S2  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32S2  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
8MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
8MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
1.25MB  | 
||
On-board  | 
320MHz  | 
16MB  | 
1.16MB  | 
|||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
K210  | 
400MHz  | 
16MB  | 
6MB  | 
||
External  | 
K210  | 
400MHz  | 
16MB  | 
6MB  | 
||
External  | 
K210  | 
400MHz  | 
16MB  | 
6MB  | 
||
External  | 
K210  | 
400MHz  | 
16MB  | 
6MB  | 
||
External  | 
K210  | 
400MHz  | 
16MB  | 
6MB  | 
||
External  | 
K210  | 
400MHz  | 
16MB  | 
6MB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
16MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
1.25MB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
1.25MB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  | 
||
External  | 
ESP32  | 
240MHz  | 
4MB  | 
320KB  |