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bin/openocd -s share/openocd/scripts -f interface/ftdi/esp32_devkitj_v1.cfg -f board/esp-wroom-32.cfg Does your Wrover-KIT come with WROOM or WROVER module? If it's WROVER (like most ESP-WROVER-KITs) then you need to specify config file esp32-wrover.cfg. If your WROVER-KIT uses WROOM module, then y...
If you are reading files from FAT filesystem via standard C library functions, then you can do so from multiple concurrent tasks. Keep in mind that FATFS library does not support some concurrent operations on same file (reading/writing from one task and deleting it from the other). If you aren't usi...
Based on the call stack, the error does not come from cjson. You may get more precise error indication if you enable GDBStub, but my guess would be that one of cJSON_GetObjectItem calls returns NULL, which you immediately dereference with ->valueint. Try checking the return value before dereferencing.
- Sat Jul 07, 2018 5:56 am
- Forum: ESP32 IDF
- Topic: Cannot use GPIO17 for UART0, UART1, UART2 TX - causes guru mediation errors.
- Replies: 2
- Views: 106
On D2WD, pins GPIO16, GPIO17, SD_CMD, SD_CLK, SD_DATA_0, SD_DATA_1 are used to connect the built-in SPI Flash chip. Using them for some other purpose will interfere with code execution from flash, leading to illegal instruction exception. Also note that D2WD uses a 1.8V flash chip, so all pins in VD...
- Wed Jul 04, 2018 10:04 am
- Forum: Hardware
- Topic: openocd & esp32 Freematics ONE+ on Linux
- Replies: 4
- Views: 190
I guess there is no chance of using the onboard adapter to connect to another board, right? If you already have a WROVER-KIT board, you can use it to debug external boards. Disconnect 4JTAG jumpers which go to the onboard WROVER module, and connect external board using cables instead. Depending on ...
- Fri Jun 29, 2018 1:34 pm
- Forum: General Discussion
- Topic: Does ESP32 erases whole sector while writing a byte to flash
- Replies: 3
- Views: 179
Note that there are some flash chips which contain "software erase" feature, and they do erase one page even if only one byte is written (and therefore allow changing 0 -> 1 without an explicit erase operation). However, at the moment, such flash chips are not used in ESP32 modules produce...