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:

• Debugging options

• Upload options

Drivers

Windows:

• Step-by-step guide: Drivers, Zadig, Wiring

• Video tutorial

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

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
CHIPS Alliance	The CHIPS Alliance develops high-quality, open source hardware designs relevant to silicon devices and FPGAs.
Espressif 32	ESP32 is a series of low-cost, low-power system on a chip microcontrollers with integrated Wi-Fi and Bluetooth. ESP32 integrates an antenna switch, RF balun, power amplifier, low-noise receive amplifier, filters, and power management modules.
OpenHW Group	OpenHW Group is a not-for-profit, global organization that provides an infrastructure for hosting high quality open-source HW developments in line with industry best practices. The OpenHW CV32E40P RISC-V core is the first open-source core for high-volume chips verified with the state-of-the-art process required for high-integrity, commercial SoCs.
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.
Espressif IoT Development Framework	Espressif IoT Development Framework. Official development framework for ESP32 chip
Freedom E SDK	Open Source Software for Developing on the SiFive Freedom E Platform
FreeRTOS	FreeRTOS is a real-time operating system kernel for embedded devices that has been ported to 40 microcontroller platforms.
PULP Runtime Environment	Runtime Environment for Parallel Ultra Low Power platform
PULP SDK	Software Development Kit for Parallel Ultra Low Power platform
WD-Firmware	The WD Firmware package contains Firmware applications and Processor Support Package (PSP) for various cores, alongside demos which support all features.
Zephyr	Zephyr is a new generation, scalable, optimized, secure RTOS for multiple hardware architectures

Boards

Note

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

Name	Platform	Debug	MCU	Frequency	Flash	RAM
4D Systems GEN4-ESP32 16MB (ESP32S3-R8N16)	Espressif 32	External	ESP32S3	240MHz	16MB	320KB
AI Thinker ESP32-CAM	Espressif 32	External	ESP32	240MHz	4MB	320KB
ALKS ESP32	Espressif 32	External	ESP32	240MHz	4MB	320KB
AZ-Delivery ESP-32 Dev Kit C V4	Espressif 32	External	ESP32	240MHz	4MB	520KB
Adafruit ESP32 Feather	Espressif 32	External	ESP32	240MHz	4MB	320KB
Adafruit ESP32-S2 Feather Development Board	Espressif 32	External	ESP32S2	240MHz	4MB	320KB
Adafruit Feather ESP32 V2	Espressif 32	External	ESP32	240MHz	8MB	320KB
Adafruit Feather ESP32-S2	Espressif 32	External	ESP32S2	240MHz	4MB	320KB
Adafruit Feather ESP32-S2 Reverse TFT	Espressif 32	External	ESP32S2	240MHz	4MB	320KB
Adafruit Feather ESP32-S2 TFT	Espressif 32	External	ESP32S2	240MHz	4MB	320KB
Adafruit Feather ESP32-S3 2MB PSRAM	Espressif 32	External	ESP32S3	240MHz	4MB	320KB
Adafruit Feather ESP32-S3 No PSRAM	Espressif 32	External	ESP32S3	240MHz	8MB	320KB
Adafruit Feather ESP32-S3 Reverse TFT	Espressif 32	External	ESP32S3	240MHz	4MB	320KB
Adafruit Feather ESP32-S3 TFT	Espressif 32	External	ESP32S3	240MHz	4MB	320KB
Adafruit FunHouse	Espressif 32	External	ESP32S2	240MHz	4MB	320KB
Adafruit ItsyBitsy ESP32	Espressif 32	External	ESP32	240MHz	8MB	320KB
Adafruit MagTag 2.9	Espressif 32	External	ESP32S2	240MHz	4MB	320KB
Adafruit MatrixPortal ESP32-S3	Espressif 32	External	ESP32S3	240MHz	8MB	320KB
Adafruit Metro ESP32-S2	Espressif 32	External	ESP32S2	240MHz	4MB	320KB
Adafruit Metro ESP32-S3	Espressif 32	External	ESP32S3	240MHz	16MB	320KB
Adafruit QT Py ESP32	Espressif 32	External	ESP32	240MHz	8MB	320KB
Adafruit QT Py ESP32-C3	Espressif 32	External	ESP32C3	160MHz	4MB	320KB
Adafruit QT Py ESP32-S2	Espressif 32	External	ESP32S2	240MHz	4MB	320KB
Adafruit QT Py ESP32-S3 (4M Flash 2M PSRAM)	Espressif 32	External	ESP32S3	240MHz	4MB	320KB
Adafruit QT Py ESP32-S3 No PSRAM	Espressif 32	External	ESP32S3	240MHz	8MB	320KB
Adafruit Qualia ESP32-S3 RGB666	Espressif 32	External	ESP32S3	240MHz	16MB	320KB
Adafruit pyCamera S3	Espressif 32	External	ESP32S3	240MHz	4MB	320KB
Ai-Thinker ESP-C3-M1-I-Kit	Espressif 32	External	ESP32C3	160MHz	4MB	320KB
Ai-Thinker NodeMCU-32S2 (ESP-12K)	Espressif 32	External	ESP32S2	240MHz	4MB	320KB
AirM2M CORE ESP32C3	Espressif 32	External	ESP32C3	160MHz	4MB	320KB
Arduino Nano ESP32	Espressif 32	External	ESP32S3	240MHz	16MB	320KB
ArtronShop ATD1.47-S3	Espressif 32	External	ESP32S3	240MHz	8MB	320KB
ArtronShop IOXESP32	Espressif 32	External	ESP32	240MHz	4MB	320KB
ArtronShop IOXESP32PS	Espressif 32	External	ESP32	240MHz	4MB	320KB
Arty FPGA Dev Kit	SiFive	On-board	FE310	450MHz	16MB	256MB
Aventen S3 Sync	Espressif 32	External	ESP32S3	240MHz	16MB	320KB
BPI-Leaf-S3	Espressif 32	External	ESP32S3	240MHz	8MB	320KB
Blinker WiFiduino32S3	Espressif 32	External	ESP32S3	240MHz	8MB	320KB
Blinker WiFiduinoV2 (ESP32-C3)	Espressif 32	External	ESP32C3	160MHz	4MB	320KB
Connaxio’s Espoir	Espressif 32	External	ESP32	240MHz	4MB	320KB
Cytron Maker Feather AIoT S3	Espressif 32	External	ESP32S3	240MHz	8MB	320KB
D-duino-32	Espressif 32	External	ESP32	240MHz	4MB	320KB
DFRobot Beetle ESP32-C3	Espressif 32	External	ESP32C3	160MHz	4MB	320KB
DFRobot Firebeetle 2 ESP32-E	Espressif 32	External	ESP32	240MHz	4MB	320KB
DFRobot Firebeetle 2 ESP32-S3	Espressif 32	External	ESP32S3	240MHz	4MB	320KB
DFRobot Romeo ESP32-S3	Espressif 32	External	ESP32S3	240MHz	16MB	320KB
DOIT ESP32 DEVKIT V1	Espressif 32	External	ESP32	240MHz	4MB	320KB
DOIT ESPduino32	Espressif 32	External	ESP32	240MHz	4MB	320KB
Deneyap Kart	Espressif 32	External	ESP32	240MHz	4MB	320KB
Deneyap Kart 1A	Espressif 32	External	ESP32	240MHz	4MB	320KB
Deneyap Kart 1A v2	Espressif 32	External	ESP32S3	240MHz	4MB	320KB
Deneyap Kart G	Espressif 32	External	ESP32C3	160MHz	4MB	320KB
Deneyap Mini	Espressif 32	External	ESP32S2	240MHz	4MB	320KB
Deneyap Mini v2	Espressif 32	External	ESP32S2	240MHz	4MB	320KB
Deparment of Alchemy MiniMain ESP32-S2	Espressif 32	External	ESP32S2	240MHz	4MB	320KB
Digilent Nexys A7	OpenHW Group	On-board		320MHz	16MB	1.16MB
Dongsen Tech Pocket 32	Espressif 32	External	ESP32	240MHz	4MB	320KB
ESP32 FM DevKit	Espressif 32	External	ESP32	240MHz	4MB	320KB
ESP32 Pico Kit	Espressif 32	External	ESP32	240MHz	4MB	320KB
ESP32-S3 PowerFeather	Espressif 32	External	ESP32S3	240MHz	8MB	320KB
ESP32S3 CAM LCD	Espressif 32	External	ESP32S3	240MHz	8MB	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
EspinalLab ATMegaZero ESP32-S2	Espressif 32	External	ESP32S2	240MHz	16MB	320KB
Espressif ESP-WROVER-KIT	Espressif 32	On-board	ESP32	240MHz	4MB	320KB
Espressif ESP32 Dev Module	Espressif 32	External	ESP32	240MHz	4MB	320KB
Espressif ESP32-C3-DevKitC-02	Espressif 32	External	ESP32C3	160MHz	4MB	320KB
Espressif ESP32-C3-DevKitM-1	Espressif 32	External	ESP32C3	160MHz	4MB	320KB
Espressif ESP32-C6-DevKitM-1	Espressif 32	External	ESP32C6	160MHz	4MB	320KB
Espressif ESP32-S2-Kaluga-1 Kit	Espressif 32	On-board	ESP32S2	240MHz	4MB	320KB
Espressif ESP32-S2-Saola-1	Espressif 32	External	ESP32S2	240MHz	4MB	320KB
Espressif ESP32-S3-Box	Espressif 32	External	ESP32S3	240MHz	16MB	320KB
Espressif ESP32-S3-DevKitC-1-N8 (8 MB QD, No PSRAM)	Espressif 32	On-board	ESP32S3	240MHz	8MB	320KB
Espressif ESP32-S3-DevKitM-1	Espressif 32	On-board	ESP32S3	240MHz	8MB	320KB
Espressif ESP32-S3-USB-OTG	Espressif 32	On-board	ESP32S3	240MHz	8MB	320KB
FireBeetle-ESP32	Espressif 32	External	ESP32	240MHz	16MB	520KB
Franzininho WiFi	Espressif 32	External	ESP32S2	240MHz	4MB	320KB
Franzininho WiFi Board	Espressif 32	External	ESP32S2	240MHz	4MB	320KB
Franzininho WiFi MSC	Espressif 32	External	ESP32S2	240MHz	4MB	320KB
Frog Board ESP32	Espressif 32	External	ESP32	240MHz	4MB	320KB
HONEYLemon	Espressif 32	External	ESP32	240MHz	4MB	320KB
Heltec WiFi Kit 32 (V3)	Espressif 32	External	ESP32S3	240MHz	8MB	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 WiFi LoRa 32 (V3)	Espressif 32	External	ESP32S3	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
IoTaaP Magnolia	Espressif 32	External	ESP32	240MHz	4MB	320KB
Kinetic Dynamics Nebula S3	Espressif 32	External	ESP32S3	240MHz	4MB	320KB
LOGISENSES Senses Weizen	Espressif 32	External	ESP32	240MHz	4MB	320KB
Lilka v2	Espressif 32	External	ESP32S3	240MHz	16MB	320KB
LilyGo T-Display-S3	Espressif 32	External	ESP32S3	240MHz	16MB	320KB
Lion:Bit Dev Board	Espressif 32	External	ESP32	240MHz	4MB	320KB
Lion:Bit S3 STEM Dev Board	Espressif 32	On-board	ESP32S3	240MHz	4MB	320KB
M5Stack AtomS3	Espressif 32	External	ESP32S3	240MHz	8MB	320KB
M5Stack CoreS3	Espressif 32	External	ESP32S3	240MHz	16MB	320KB
M5Stack StampS3	Espressif 32	External	ESP32S3	240MHz	8MB	320KB
MH ET LIVE ESP32DevKIT	Espressif 32	External	ESP32	240MHz	4MB	320KB
MH ET LIVE ESP32MiniKit	Espressif 32	External	ESP32	240MHz	4MB	320KB
MakerAsia KB32-FT	Espressif 32	External	ESP32	240MHz	4MB	320KB
MotorGo Mini 1 (ESP32-S3)	Espressif 32	External	ESP32S3	240MHz	4MB	320KB
Munich Labs RedPill ESP32-S3	Espressif 32	External	ESP32S3	240MHz	8MB	320KB
Namino Arancio	Espressif 32	External	ESP32S3	240MHz	4MB	320KB
Namino Rosso	Espressif 32	External	ESP32S3	240MHz	4MB	320KB
Node32s	Espressif 32	External	ESP32	240MHz	4MB	320KB
NodeMCU-32S	Espressif 32	External	ESP32	240MHz	4MB	320KB
OLIMEX ESP32-DevKit-LiPo	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
Pycom WiPy3	Espressif 32	External	ESP32	240MHz	4MB	1.25MB
RVfpga: Digilent Nexys A7	CHIPS Alliance	On-board		320MHz	16MB	1.16MB
SG-O AirMon	Espressif 32	External	ESP32	240MHz	4MB	320KB
SQFMI Watchy v2.0	Espressif 32	External	ESP32	240MHz	4MB	320KB
Seeed Studio Edgebox-ESP-100	Espressif 32	External	ESP32S3	240MHz	4MB	320KB
Seeed Studio XIAO ESP32C3	Espressif 32	External	ESP32C3	160MHz	4MB	320KB
Seeed Studio XIAO ESP32S3	Espressif 32	External	ESP32S3	240MHz	8MB	320KB
Silicognition wESP32	Espressif 32	External	ESP32	240MHz	4MB	320KB
Smart Bee Data Logger	Espressif 32	External	ESP32S3	240MHz	8MB	320KB
Smart Bee Motion	Espressif 32	External	ESP32S2	240MHz	4MB	320KB
Smart Bee Motion Mini	Espressif 32	External	ESP32C3	160MHz	4MB	320KB
Smart Bee Motion S3	Espressif 32	External	ESP32S3	240MHz	8MB	320KB
Smart Bee S3	Espressif 32	External	ESP32S3	240MHz	8MB	320KB
SparkFun ESP32 IoT RedBoard	Espressif 32	External	ESP32	240MHz	4MB	320KB
SparkFun ESP32 Thing	Espressif 32	External	ESP32	240MHz	4MB	320KB
SparkFun ESP32 Thing Plus	Espressif 32	External	ESP32	240MHz	16MB	320KB
SparkFun ESP32 Thing Plus C	Espressif 32	External	ESP32	240MHz	16MB	320KB
SparkFun ESP32-S2 Thing Plus	Espressif 32	External	ESP32S2	240MHz	4MB	320KB
SparkFun LoRa Gateway 1-Channel	Espressif 32	External	ESP32	240MHz	4MB	320KB
TAMC DPU ESP32	Espressif 32	External	ESP32	240MHz	8MB	320KB
TAMC Termod S3	Espressif 32	External	ESP32S3	240MHz	8MB	320KB
TTGO LoRa32-OLED V1	Espressif 32	External	ESP32	240MHz	4MB	320KB
TTGO LoRa32-OLED V2	Espressif 32	External	ESP32	240MHz	4MB	320KB
TTGO LoRa32-OLED v2.1.6	Espressif 32	External	ESP32	240MHz	4MB	320KB
TTGO T-Beam	Espressif 32	External	ESP32	240MHz	4MB	1.25MB
TTGO T-OI PLUS RISC-V ESP32-C3	Espressif 32	External	ESP32C3	160MHz	4MB	320KB
TTGO T1	Espressif 32	External	ESP32	240MHz	4MB	320KB
TTGO T7 V1.4 Mini32	Espressif 32	External	ESP32	240MHz	4MB	1.25MB
Trueverit ESP32 Universal IoT Driver	Espressif 32	External	ESP32	240MHz	4MB	320KB
Trueverit ESP32 Universal IoT Driver MK II	Espressif 32	External	ESP32	240MHz	4MB	320KB
Trueverit ESP32 Universal IoT Driver MK III	Espressif 32	External	ESP32	240MHz	4MB	320KB
Unexpected Maker FeatherS2	Espressif 32	External	ESP32S2	240MHz	16MB	320KB
Unexpected Maker FeatherS2 Neo	Espressif 32	External	ESP32S2	240MHz	4MB	320KB
Unexpected Maker FeatherS3	Espressif 32	External	ESP32S3	240MHz	16MB	320KB
Unexpected Maker NanoS3	Espressif 32	External	ESP32S3	240MHz	8MB	320KB
Unexpected Maker PROS3	Espressif 32	External	ESP32S3	240MHz	16MB	320KB
Unexpected Maker RMP	Espressif 32	External	ESP32S2	240MHz	4MB	320KB
Unexpected Maker TinyS2	Espressif 32	External	ESP32S2	240MHz	4MB	320KB
Unexpected Maker TinyS3	Espressif 32	External	ESP32S3	240MHz	8MB	320KB
Valetron Systems VALTRACK-V4MVF	Espressif 32	External	ESP32C3	160MHz	4MB	320KB
Valetron Systems VALTRACK-V4VTS	Espressif 32	External	ESP32C3	160MHz	4MB	320KB
VintLabs ESP32 Devkit	Espressif 32	External	ESP32	240MHz	4MB	320KB
WEMOS D1 MINI ESP32	Espressif 32	External	ESP32	240MHz	4MB	320KB
WEMOS D1 R32	Espressif 32	External	ESP32	240MHz	4MB	320KB
WEMOS LOLIN C3 Mini	Espressif 32	External	ESP32C3	160MHz	4MB	320KB
WEMOS LOLIN D32	Espressif 32	External	ESP32	240MHz	4MB	320KB
WEMOS LOLIN D32 PRO	Espressif 32	External	ESP32	240MHz	4MB	320KB
WEMOS LOLIN S2 Mini	Espressif 32	External	ESP32S2	240MHz	4MB	320KB
WEMOS LOLIN S2 PICO	Espressif 32	External	ESP32S2	240MHz	4MB	320KB
WEMOS LOLIN S3	Espressif 32	External	ESP32S3	240MHz	16MB	320KB
WEMOS LOLIN S3 Mini	Espressif 32	External	ESP32S3	240MHz	4MB	320KB
WEMOS LOLIN S3 PRO	Espressif 32	External	ESP32S3	240MHz	16MB	320KB
WEMOS LOLIN32	Espressif 32	External	ESP32	240MHz	4MB	320KB
WEMOS LOLIN32 Lite	Espressif 32	External	ESP32	240MHz	4MB	320KB
WeAct Studio ESP32C3CoreBoard	Espressif 32	External	ESP32C3	160MHz	384KB	400KB
WeMos WiFi and Bluetooth Battery	Espressif 32	External	ESP32	240MHz	4MB	320KB
Wireless-Tag WT32-ETH01 Ethernet Module	Espressif 32	External	ESP32	240MHz	4MB	320KB
XinaBox CW02	Espressif 32	External	ESP32	240MHz	4MB	320KB
microS2	Espressif 32	External	ESP32S2	240MHz	16MB	320KB
oddWires IoT-Bus Io	Espressif 32	External	ESP32	240MHz	4MB	320KB
oddWires IoT-Bus Proteus	Espressif 32	External	ESP32	240MHz	4MB	320KB
senseBox MCU-S2 ESP32-S2	Espressif 32	External	ESP32S2	240MHz	4MB	320KB
uPesy ESP32 Wroom DevKit	Espressif 32	External	ESP32	240MHz	4MB	320KB
uPesy ESP32 Wrover DevKit	Espressif 32	External	ESP32	240MHz	4MB	320KB
unPhone 7	Espressif 32	External	ESP32	240MHz	4MB	320KB
unPhone 8	Espressif 32	External	ESP32S3	240MHz	7.94MB	2.31MB
unPhone 9	Espressif 32	External	ESP32S3	240MHz	7.94MB	8.31MB