Search found 5 matches

by avanbremen
Wed Apr 10, 2019 8:52 am
Forum: Hardware
Topic: JTAG schematic for custom board based on ESP32-WROOM-32D
Replies: 5
Views: 11671

Re: JTAG schematic for custom board based on ESP32-WROOM-32D

Hi ESP_Sprite, Thank you so much for your reply. For a custom board design based on the ESP32-WROOM-32D, would you advise to keep the in-line 100 ohm resistors for MTMS/MTDI/MTCK/MTDO (like in the esp32-wroom-32 datasheet) and leave off the 10K resistors? For debug we will simply place the 4 100 ohm...
by avanbremen
Tue Apr 09, 2019 3:42 pm
Forum: Hardware
Topic: JTAG schematic for custom board based on ESP32-WROOM-32D
Replies: 5
Views: 11671

Re: JTAG schematic for custom board based on ESP32-WROOM-32D

Hi, In order to further debug this problem and make sure it was not caused by faulty wiring, I decided to flash the DevKitC with hello_world and connect the DevKitC to the SEGGER J-Link directly. In other words: No 100R series resistor (like in the ESP32-WROOM-32 datasheet), no 10K pullup/down resis...
by avanbremen
Tue Apr 09, 2019 12:26 pm
Forum: Hardware
Topic: JTAG schematic for custom board based on ESP32-WROOM-32D
Replies: 5
Views: 11671

Re: JTAG schematic for custom board based on ESP32-WROOM-32D

For your information, I have tried both variants (100R in series and 10K pullup/down). However the result remains the same. You can see the openocd output in the attachment. Info : esp32: Debug controller was reset (pwrstat=0xE5, after clear 0x0F). The ESP32 is not actually resetting, as I can see n...
by avanbremen
Mon Apr 08, 2019 7:24 pm
Forum: Hardware
Topic: JTAG schematic for custom board based on ESP32-WROOM-32D
Replies: 5
Views: 11671

JTAG schematic for custom board based on ESP32-WROOM-32D

Hi, We are in the process of testing JTAG on a custom board based on the ESP32-WROOM-32D, using a J-Link Debug Probe by SEGGER. Based on the peripheral schematics found in chapter 7, page 14 of the esp32-wroom-32_datasheet_en.pdf and the ESP-WROVER-KIT_V4_1.pdf schematic, I would like to know how ex...
by avanbremen
Fri Nov 09, 2018 10:09 am
Forum: ESP-IDF
Topic: Compatibility between "normal CMake" and ESP-IDF
Replies: 80
Views: 104101

Re: Compatibility between "normal CMake" and ESP-IDF

First of all, great work on the CMake based build system so far. I just finished transitioning our own project and everything works like a charm. However, I did notice that some crucial functionality is missing in idf.py, like write_flash and read_flash from esptool.py. We use read_flash to read bac...