Olimex ARM-USB-OCD¶

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.

Configuration ¶

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:

Drivers ¶

Windows:: See https://community.platformio.org/t/esp32-pio-unified-debugger/4541/20
Mac:: 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
Linux:: 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.

Wiring Connections ¶

../../../_images/generic_jtag_swd_connector.jpg

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)

Platforms ¶

Name	Description
Espressif 32	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.
SiFive	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.

Frameworks ¶

Name	Description
Arduino	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	Espressif IoT Development Framework. Official development framework for ESP32.
Freedom E SDK	Open Source Software for Developing on the SiFive Freedom E Platform
Simba	Simba is an RTOS and build framework. It aims to make embedded programming easy and portable.

Boards ¶

Note

For more detailed board information please scroll tables below by horizontal.

Name	Platform	Debug	MCU	Frequency	Flash	RAM
ALKS ESP32	Espressif 32	External	ESP32	240MHz	4MB	320KB
Adafruit ESP32 Feather	Espressif 32	External	ESP32	240MHz	4MB	320KB
Arty FPGA Dev Kit	SiFive	On-board	FE310	450MHz	16MB	256MB
D-duino-32	Espressif 32	External	ESP32	240MHz	4MB	320KB
DOIT ESP32 DEVKIT V1	Espressif 32	External	ESP32	240MHz	4MB	320KB
Dongsen Tech Pocket 32	Espressif 32	External	ESP32	240MHz	4MB	320KB
ESP32 FM DevKit	Espressif 32	External	ESP32	240MHz	4MB	320KB
ESP32vn IoT Uno	Espressif 32	External	ESP32	240MHz	4MB	320KB
ESPectro32	Espressif 32	External	ESP32	240MHz	4MB	320KB
ESPino32	Espressif 32	External	ESP32	240MHz	4MB	320KB
Espressif ESP-WROVER-KIT	Espressif 32	On-board	ESP32	240MHz	4MB	320KB
Espressif ESP32 Dev Module	Espressif 32	External	ESP32	240MHz	4MB	320KB
FireBeetle-ESP32	Espressif 32	External	ESP32	240MHz	4MB	320KB
Frog Board ESP32	Espressif 32	External	ESP32	240MHz	4MB	320KB
Heltec WiFi LoRa 32	Espressif 32	External	ESP32	240MHz	4MB	320KB
Heltec WiFi LoRa 32 (V2)	Espressif 32	External	ESP32	240MHz	8MB	320KB
Heltec Wireless Stick	Espressif 32	External	ESP32	240MHz	8MB	320KB
Hornbill ESP32 Dev	Espressif 32	External	ESP32	240MHz	4MB	320KB
Hornbill ESP32 Minima	Espressif 32	External	ESP32	240MHz	4MB	320KB
MH ET LIVE ESP32DevKIT	Espressif 32	External	ESP32	240MHz	4MB	320KB
MH ET LIVE ESP32MiniKit	Espressif 32	External	ESP32	240MHz	4MB	320KB
Node32s	Espressif 32	External	ESP32	240MHz	4MB	320KB
NodeMCU-32S	Espressif 32	External	ESP32	240MHz	4MB	320KB
OLIMEX ESP32-EVB	Espressif 32	External	ESP32	240MHz	4MB	320KB
OLIMEX ESP32-GATEWAY	Espressif 32	External	ESP32	240MHz	4MB	320KB
Pycom LoPy	Espressif 32	External	ESP32	240MHz	4MB	320KB
Pycom LoPy4	Espressif 32	External	ESP32	240MHz	4MB	1.25MB
Silicognition wESP32	Espressif 32	External	ESP32	240MHz	4MB	320KB
SparkFun ESP32 Thing	Espressif 32	External	ESP32	240MHz	4MB	320KB
SparkFun LoRa Gateway 1-Channel	Espressif 32	External	ESP32	240MHz	4MB	320KB
TTGO LoRa32-OLED V1	Espressif 32	External	ESP32	240MHz	4MB	320KB
TTGO T-Beam	Espressif 32	External	ESP32	240MHz	4MB	1.25MB
WEMOS LOLIN D32	Espressif 32	External	ESP32	240MHz	4MB	320KB
WEMOS LOLIN D32 PRO	Espressif 32	External	ESP32	240MHz	4MB	320KB
WEMOS LOLIN32	Espressif 32	External	ESP32	240MHz	4MB	320KB
WeMos WiFi and Bluetooth Battery	Espressif 32	External	ESP32	240MHz	4MB	320KB
XinaBox CW02	Espressif 32	External	ESP32	240MHz	4MB	320KB
oddWires IoT-Bus Io	Espressif 32	External	ESP32	240MHz	4MB	320KB
oddWires IoT-Bus Proteus	Espressif 32	External	ESP32	240MHz	4MB	320KB

Olimex ARM-USB-OCD¶

Configuration¶

Drivers¶

Wiring Connections¶

Platforms¶

Frameworks¶

Boards¶

Configuration ¶

Drivers ¶

Wiring Connections ¶

Platforms ¶

Frameworks ¶

Boards ¶