ESP8266 program and debug with JLink (jtag/swd) ?
Posted: Fri Jan 22, 2016 1:52 pmHello,
Is it possible to program and debug ESP8266 with JLink ( https://www.segger.com/jlink-debug-probes.html ) attached via JTAG or SWD pins?
Has anyone succeeded to do so, and if yes, could you please provide details of your setup (signals wiring, debug method, development environment)?
I am using MS Visual Studio and GDB for coding and debugging via serial port, but I would like to use OpenOCD or XtensaOCD with JLink and have the serial port pins used by my application.
I am using Sparkfun Thing board ( https://cdn.sparkfun.com/datasheets/Wir ... _Thing.pdf ) for development, and I can access all the necessary JTAG/SWD signals.
Here are my wiring details from JLink ARM-20 pin interface ( http://m.eet.com/media/1073686/JTAG_101_fig3.jpg ) to my Sparkfun Thing board:
JLink GND pin 4 <==> ESP8266 GND
JLink TDI pin 5 <==> ESP8266 MTDI/SPIQ/GPIO12
JLink TMS pin 7 <==> ESP8266 MTMS/SPICLK/GPIO14
JLink TCK pin 11 <==> ESP8266 MTCK/SPID/GPIO13
JLink TDO pin 13 <==> ESP8266 MTDO/SPICS/GPIO15 (after removing R17 pull-down)
JLink RSTB pin 15 or TRST pin 3 <==> ESP8266 EXT_RSTB/DTR/RESET
Regards,
G
Is it possible to program and debug ESP8266 with JLink ( https://www.segger.com/jlink-debug-probes.html ) attached via JTAG or SWD pins?
Has anyone succeeded to do so, and if yes, could you please provide details of your setup (signals wiring, debug method, development environment)?
I am using MS Visual Studio and GDB for coding and debugging via serial port, but I would like to use OpenOCD or XtensaOCD with JLink and have the serial port pins used by my application.
I am using Sparkfun Thing board ( https://cdn.sparkfun.com/datasheets/Wir ... _Thing.pdf ) for development, and I can access all the necessary JTAG/SWD signals.
Here are my wiring details from JLink ARM-20 pin interface ( http://m.eet.com/media/1073686/JTAG_101_fig3.jpg ) to my Sparkfun Thing board:
JLink GND pin 4 <==> ESP8266 GND
JLink TDI pin 5 <==> ESP8266 MTDI/SPIQ/GPIO12
JLink TMS pin 7 <==> ESP8266 MTMS/SPICLK/GPIO14
JLink TCK pin 11 <==> ESP8266 MTCK/SPID/GPIO13
JLink TDO pin 13 <==> ESP8266 MTDO/SPICS/GPIO15 (after removing R17 pull-down)
JLink RSTB pin 15 or TRST pin 3 <==> ESP8266 EXT_RSTB/DTR/RESET
Regards,
G