Great article on getting the ESP32 JTAG interface going using FTDI based adapters. Some time ago, the OpenOCD development team decided not to provide any official binaries anymore. Tigard is a FT2232H-based, a multi-protocol, multi-voltage, ... OpenOCD, and UrJTAG for JTAG, Flashrom, PyFtdi/PySpiFlash, LibMPSSE, and other tools for SPI interfaces, LibMPSSE and PyFtdi/PyI2CFlash for I²C interfaces) that support the x232H family of chips. — Selecting OpenOCD as your debugging tool with an adapter like FT2232H is a very good choice when you don’t have much budget to work with. ( Log Out / Getting Started with OPENOCD Using FTH Adapter for SWD Debugging. The FT2232HL is dual high-speed USB to UART/FIFO device, and similar FTDI devices are used on many boards as UART to USB converters. However, the NRF52 config file doesn't make any provisions for flashing. Info : VTarget = 3.328 V Info : Listening on port 3333 for gdb connections The resistors on MTMS and MTCK just made sense to me as they would prevent any stray signals after RESET is deasserted and before JTAG has a chance to properly get going. Opinions expressed by DZone contributors are their own. As I’m using the ADBUS, I’m configuration the A converter: OpenOCD needs a configuration file. As I’m using the ADBUS, I’m configuration the A converter: OpenOCD needs a configuration file. Compared to what I get with native J-Link this is really slow (but I won’t complain as OpenOCD is more of a hobby/free solution anyway). Info : Using flash size 16384 KB So really no improvement on my side. As can be seen from the sample outputs below, I’ve tried to crank up the adapter speeds: 14MHz for the jlink and 25 MHz for the JTAGkey2. “` So I would think that in a ‘normal’ environment these would be good enough. Info : Using flash size 16384 KB Who Viewed This Also Viewed. shutdown command invoked Also add the Uart Rx/Tx signals in the 10-pin like we have on the FRDM bards. Info : esp32: Core 0 was reset (pwrstat=0x1F, after clear 0x0F). I looked … I’m using the FTDI signals from the ADBUS: Below are the signals on the 2×10 pin JTAG header: On the ESP32 (TTGO Pico-D4 Module) the following pins are used: The FT2232 shows up with two USB serial ports in the Windows device manager: For OpenOCD, use the SysProgs USB Driver Tool on Windows to load the WinUSB Driver for the FT2232HL chip. Info : esp32: Core 0 was reset (pwrstat=0x1F, after clear 0x0F). The shield will include the UART converter pins (through-hole, Rx, Tx, GND) plus the standard 2×5 1.27mm JTAG/SWD header for debugging the ESP. I could not fathom why ESPRESSIF omitted the PU/PD resistors on these pins (unlike many other pins). The FT2232H is a USB 2.0 Hi-Speed (480Mb/s) UART/FIFO/JTAG device. Do you know if it’s possible to program app with the JTAG link? `13_____TDO_____GPIO15` JTAG Debugging the ESP32 With FT2232 and OpenOCD, Eclipse JTAG Debugging the ESP32 with a SEGGER J-Link, Programming the ESP32 with an ARM Cortex-M USB CDC Gateway, Getting Started With OpenOCD Using FT2232h Adapter for SWD Debugging, Future Technology Devices International FT2232H Datasheet, Building Your Own Bootloader Gateway to ESP, Developer Info : Target halted. Info : Configured 2 cores Plus I’m thinking about adding a 3D printed enclosure. I’m using the one below: Install that FT2232HL.cfg file into the following folder of your OpenOCD installation: To program or flash the application, use something like this: Below is an example output for reference: To use the set-up with Eclipse, check out my previous article: “Building and Flashing ESP32 with Eclipse." anyone used the FT4232 yet? (the stats about tasks and stack usage, etc) Was there any special setup to get that to work? Change ). linuxgpiod A bitbang JTAG driver using Linux GPIO through library libgpiod. `5______TDI_____GPIO12 (MTDI)` I’m doing it in KiCAD, would that work for you? Change ), You are commenting using your Google account. Info : esp32: Core 1 was reset (pwrstat=0x5F, after clear 0x0F). Or JTAG debugging might not operate at all afterwards. Info : Flash mapping 1: 0x20018 -> 0x400d0018, 75 KB Post was not sent - check your email addresses! I’m using the one below: Install that FT2232HL.cfg file into the following folder of your OpenOCD installation: To program or flash the application, use something like this: Below is an example output for reference: To use the setup with Eclipse, have a read at my previous article: “Building and Flashing ESP32 with Eclipse“. Was just wondering why you set the adapter speed to 200kHz this too... 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