Search found 23 matches

by jimhelios
Wed Jun 17, 2020 8:11 pm
Forum: General Discussion
Topic: Using Flyswatter2 on Mac OS with OpenOCD
Replies: 0
Views: 157

Using Flyswatter2 on Mac OS with OpenOCD

I am able to use a J-Link JTAG debugger successfully with my board, now I'm trying to use a Flyswatter2. Espressif supplied a config file for this device, but OpenOCD is unable to talk to the Flyswatter2. I can see it on the lac with lsusb and system profiler. I would appreciate any help, thank you....
by jimhelios
Sun Jun 14, 2020 11:03 pm
Forum: Hardware
Topic: ESP32-WROOM-32U JTAG wiring - Can you check my circuit?
Replies: 1
Views: 181

Re: ESP32-WROOM-32U JTAG wiring - Can you check my circuit?

I think I found it. This board uses the Segger 10 pin needle connector and pin 1 (VTREF) was not connected. I added a hookup wire between V3.3 and that pin and got the results I pasted below. Jims-MacBook-Pro-486:~ jim$ openocd -f interface/jlink.cfg -f board/esp32-wrover.cfg Open On-Chip Debugger v...
by jimhelios
Sun Jun 14, 2020 8:46 pm
Forum: Hardware
Topic: ESP32-WROOM-32U JTAG wiring - Can you check my circuit?
Replies: 1
Views: 181

ESP32-WROOM-32U JTAG wiring - Can you check my circuit?

I have a board with an ESP32-WROOM-32U and a JTAG circuit, and I have been unable to get OpenOCD to work with the board using a Segger J-link JTAG debugger. When I try, I get this: Jims-MacBook-Pro-486:~ jim$ openocd -f interface/jlink.cfg -f board/esp32-wrover.cfg Open On-Chip Debugger v0.10.0-esp3...
by jimhelios
Sun Jun 14, 2020 8:00 pm
Forum: General Discussion
Topic: Help using J-Link with ESP32 on Mac
Replies: 2
Views: 258

Re: Help using J-Link with ESP32 on Mac

It turned out that I was able to run JLinkExe (I think that's JLink Commander) from Segger to talk to it. As soon as I did, a FW upload was issued to the J-Link and now OpenOCD can talk to it.

Thanks very much for your reply.
by jimhelios
Mon Jun 08, 2020 10:16 pm
Forum: General Discussion
Topic: Help using J-Link with ESP32 on Mac
Replies: 2
Views: 258

Help using J-Link with ESP32 on Mac

I realize this is not very specific to the ESP32, but I'm really stuck and would appreciate someone helping if they know the answer. I have a Segger J-Link which I am trying to use on a Macbook running MacOS Catalina 10.15.4, with openocd and GDB against an ESP32 board. The problem is that I can not...
by jimhelios
Thu Apr 09, 2020 10:13 pm
Forum: General Discussion
Topic: ESP32 and external watchdog problems / questions
Replies: 4
Views: 1588

Re: ESP32 and external watchdog problems / questions

-Configure ESP32 to boot faster. Will your production firmware really take >1.6s to boot? I highly doubt it. Tie GPIO_15 low, disable all debugging in menuconfig, etc. -Use a different external wdt with a timeout that meets your needs. -Modify the bootloader to feed your external watchdog. -Add som...
by jimhelios
Wed Apr 08, 2020 4:01 pm
Forum: General Discussion
Topic: ESP32 and external watchdog problems / questions
Replies: 4
Views: 1588

Re: ESP32 and external watchdog problems / questions

I thought it safest to have an external WDT. Can the ESP32's internal WDT work as reliably? I was under the impression that interna WDTs were of a software type.
by jimhelios
Wed Apr 08, 2020 5:57 am
Forum: General Discussion
Topic: ESP32 and external watchdog problems / questions
Replies: 4
Views: 1588

ESP32 and external watchdog problems / questions

Hi All... I have a board with an ESP32 and an STWD100 watchdog timer chip. The WDT is connected to the ESP EN pin through a jumper, which was included to make debugging easier. The WTD's EN pin is not used, as connecting it to the ESP32 could defeat its purpose. The timeout on the WDT is 1.6 seconds...
by jimhelios
Sun Apr 05, 2020 3:53 pm
Forum: General Discussion
Topic: New board design with ESP32-WROOM-32U has I2C problem
Replies: 3
Views: 1206

Re: New board design with ESP32-WROOM-32U has I2C problem

Thanks @MikeMoy, this problem is resolved. I has SCA and SDL backwards in the test app. Killed lots of time but that's what happens sometimes. Thanks for your suggestion, I'll keep that in mind for next time.
by jimhelios
Sun Apr 05, 2020 7:34 am
Forum: General Discussion
Topic: New board design with ESP32-WROOM-32U has I2C problem
Replies: 3
Views: 1206

Re: New board design with ESP32-WROOM-32U has I2C problem

Great idea thanks, I'll do that and report back!

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