ESP32C3 Hart 0 unexpectedly reset! (OCD-673)

[JanWendler]

Development Kit

ESP32-C3-DevKitM-1 v1.6

Module or chip used

ESP32-C3

Debug Adapter

Built in

OpenOCD version

v0.11.0-esp32-20221026

Operating System

Windows 10

Using an IDE ?

no

OpenOCD command line

openocd -f board/esp32c3-builtin.cfg

JTAG Clock Speed

40000

ESP-IDF version

v4.4.3

Problem Description

• build and flash project. (works)
• start openocd with: "openocd -f board/esp32c3-builtin.cfg" in a esp-idf console
• start riscv gdb with: "riscv32-esp-elf-gdb.exe .\build\blink.elf " or any other project
• connect with gdb with openocd with: "target extended-remote localhost:3333"
• set a breakpoint at app_main with: "break app_main"
• reset program with: "monitor reset halt"
• continue with: "c"

When I follow these steps I get the following output to the console:

PS D:\Projects\esp32blink> C:\Users\jan.wendler.espressif\tools\openocd-esp32\v0.11.0-esp32-20221026\openocd-esp32\bin\openocd.exe -f board/esp32c3-builtin.cfg
Open On-Chip Debugger v0.11.0-esp32-20221026 (2022-10-26-14:48)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
Info : only one transport option; autoselect 'jtag'
Info : esp_usb_jtag: VID set to 0x303a and PID to 0x1001
Info : esp_usb_jtag: capabilities descriptor set to 0x2000
Warn : Transport "jtag" was already selected
Info : Listening on port 6666 for tcl connections
Info : Listening on port 4444 for telnet connections
Info : esp_usb_jtag: serial (60:55:F9:C1:0C:90)
Info : esp_usb_jtag: Device found. Base speed 40000KHz, div range 1 to 255
Info : clock speed 40000 kHz
Info : JTAG tap: esp32c3.cpu tap/device found: 0x00005c25 (mfg: 0x612 (Espressif Systems), part: 0x0005, ver: 0x0)
Info : datacount=2 progbufsize=16
Info : Examined RISC-V core; found 1 harts
Info : hart 0: XLEN=32, misa=0x40101104
Info : starting gdb server for esp32c3 on 3333
Info : Listening on port 3333 for gdb connections
Info : accepting 'gdb' connection on tcp/3333
Warn : No symbols for FreeRTOS!
Info : [esp32c3] Found 8 triggers
Info : Flash mapping 0: 0x10020 -> 0x3c030020, 25 KB
Info : Auto-detected flash bank 'esp32c3.flash' size 4096 KB
Info : Using flash bank 'esp32c3.flash' size 4096 KB
Info : Flash mapping 0: 0x10020 -> 0x3c030020, 25 KB
Info : Using flash bank 'esp32c3.irom' size 0 KB
Info : Flash mapping 0: 0x10020 -> 0x3c030020, 25 KB
Info : Using flash bank 'esp32c3.drom' size 28 KB
Warn : negative reply, retrying
Error: FreeRTOS: uxTopUsedPriority is not defined, consult the OpenOCD manual for a work-around!
Error: FreeRTOS: uxTopUsedPriority is not defined, consult the OpenOCD manual for a work-around!
Info : Hart 0 unexpectedly reset!
Info : Reset cause (3) - (Software core reset)
Info : Hart 0 unexpectedly reset!
Info : Reset cause (3) - (Software core reset)
Info : Hart 0 unexpectedly reset!
Info : Reset cause (3) - (Software core reset)
Info : Hart 0 unexpectedly reset!
Info : Reset cause (3) - (Software core reset)
Info : Hart 0 unexpectedly reset!

No matter how deep I place the breakpoint, it is never reached because something is causing a reset.
I tested this with my personal project and the standard blinky project with the same result. Both programs work fine when flashed.

I also tried to debug my code in CLion, using openocd, with the same result.

Debug Logs

The debug log is to long. I will provide it separately.

Expected behavior

I expect to reach a breakpoint set somewhere in the program.

Screenshots

No response

[JanWendler]

openocd_log.txt
gdb_log.txt
These are the debug logs

[erhankur]

Can you also share the idf.py monitor logs?
Flash mapping looks strange to me. There is nothing in the irom section.

Info : Flash mapping 0: 0x10020 -> 0x3c030020, 25 KB
Info : Auto-detected flash bank 'esp32c3.flash' size 4096 KB
Info : Using flash bank 'esp32c3.flash' size 4096 KB
Info : Flash mapping 0: 0x10020 -> 0x3c030020, 25 KB
Info : Using flash bank 'esp32c3.irom' size 0 KB
Info : Flash mapping 0: 0x10020 -> 0x3c030020, 25 KB
Info : Using flash bank 'esp32c3.drom' size 28 KB

[JanWendler]

D:\Projects\esp32blink>idf.py monitor
Executing action: monitor
Serial port COM7
Connecting....
Detecting chip type... ESP32-C3
Running idf_monitor in directory d:\projects\esp32blink
Executing "C:\Users\jan.wendler.espressif\python_env\idf4.4_py3.8_env\Scripts\python.exe C:/Espressif/frameworks/esp-idf-v4.4.3/tools/idf_monitor.py -p COM7 -b 115200 --toolchain-prefix riscv32-esp-elf- --target esp32c3 --decode-panic backtrace d:\projects\esp32blink\build\blink.elf -m 'C:\Users\jan.wendler.espressif\python_env\idf4.4_py3.8_env\Scripts\python.exe' 'C:/Espressif/frameworks/esp-idf-v4.4.3/\tools\idf.py'"...
--- WARNING: GDB cannot open serial ports accessed as COMx
--- Using \.\COM7 instead...
--- idf_monitor on \.\COM7 115200 ---
--- Quit: Ctrl+] | Menu: Ctrl+T | Help: Ctrl+T followed by Ctrl+H ---
ESP-ROM:esp32c3-api1-20210207
Build:Feb 7 2021
rst:0x1 (POWERON),boot:0xc (SPI_FAST_FLASH_BOOT)
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fcd5810,len:0x16c0
load:0x403cc710,len:0x930
load:0x403ce710,len:0x2d28
entry 0x403cc710
I (30) boot: ESP-IDF HEAD-HASH-NOTFOUND 2nd stage bootloader
I (30) boot: compile time 14:27:26
I (30) boot: chip revision: 3
I (33) boot.esp32c3: SPI Speed : 80MHz
I (38) boot.esp32c3: SPI Mode : DIO
I (42) boot.esp32c3: SPI Flash Size : 2MB
I (47) boot: Enabling RNG early entropy source...
I (53) boot: Partition Table:
I (56) boot: ## Label Usage Type ST Offset Length
I (63) boot: 0 nvs WiFi data 01 02 00009000 00006000
I (71) boot: 1 phy_init RF data 01 01 0000f000 00001000
I (78) boot: 2 factory factory app 00 00 00010000 00100000
I (86) boot: End of partition table
I (90) esp_image: segment 0: paddr=00010020 vaddr=3c020020 size=07d70h ( 32112) map
I (103) esp_image: segment 1: paddr=00017d98 vaddr=3fc8ba00 size=0142ch ( 5164) load
I (108) esp_image: segment 2: paddr=000191cc vaddr=40380000 size=06e4ch ( 28236) load
I (120) esp_image: segment 3: paddr=00020020 vaddr=42000020 size=14a04h ( 84484) map
I (137) esp_image: segment 4: paddr=00034a2c vaddr=40386e4c size=049e8h ( 18920) load
I (141) esp_image: segment 5: paddr=0003941c vaddr=50000010 size=00010h ( 16) load
I (146) boot: Loaded app from partition at offset 0x10000
I (149) boot: Disabling RNG early entropy source...
I (166) cpu_start: Pro cpu up.
I (174) cpu_start: Pro cpu start user code
I (174) cpu_start: cpu freq: 160000000
I (174) cpu_start: Application information:
I (177) cpu_start: Project name: blink
I (182) cpu_start: App version: 1
I (186) cpu_start: Compile time: Dec 20 2022 13:06:46
I (192) cpu_start: ELF file SHA256: ba249e2a3a0923da...
I (198) cpu_start: ESP-IDF: HEAD-HASH-NOTFOUND
I (204) heap_init: Initializing. RAM available for dynamic allocation:
I (211) heap_init: At 3FC8DCC0 len 0004EA50 (314 KiB): DRAM
I (218) heap_init: At 3FCDC710 len 00002950 (10 KiB): STACK/DRAM
I (224) heap_init: At 50000020 len 00001FE0 (7 KiB): RTCRAM
I (231) spi_flash: detected chip: generic
I (235) spi_flash: flash io: dio
W (239) spi_flash: Detected size(4096k) larger than the size in the binary image header(2048k). Using the size in the binary image header.
I (252) sleep: Configure to isolate all GPIO pins in sleep state
I (259) sleep: Enable automatic switching of GPIO sleep configuration
I (266) cpu_start: Starting scheduler.
I (271) example: Example configured to blink addressable LED!
I (271) example: Turning the LED OFF!
I (1281) example: Turning the LED ON!
I (2281) example: Turning the LED OFF!
I (3281) example: Turning the LED ON!
I (4281) example: Turning the LED OFF!
I (5281) example: Turning the LED ON!
I (6281) example: Turning the LED OFF!
I (7281) example: Turning the LED ON!
I (8281) example: Turning the LED OFF!
I (9281) example: Turning the LED ON!

[erhankur]

I did the same things using idf-v5.0 blink example but couldn't see the issue.
Here are the logs for your reference.

ESP-ROM:esp32c3-api1-20210207
Build:Feb  7 2021
rst:0x15 (USB_UART_CHIP_RESET),boot:0xc (SPI_FAST_FLASH_BOOT)   
Saved PC:0x4004c626
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fcd5820,len:0x16dc
load:0x403cc710,len:0x96c
load:0x403ce710,len:0x2e2c
entry 0x403cc710
I (24) boot: ESP-IDF v5.0-dirty 2nd stage bootloader
I (24) boot: compile time 22:27:57
I (24) boot: chip revision: v0.3
I (27) boot.esp32c3: SPI Speed      : 80MHz
I (31) boot.esp32c3: SPI Mode       : DIO
I (36) boot.esp32c3: SPI Flash Size : 2MB
I (41) boot: Enabling RNG early entropy source...
I (46) boot: Partition Table:
I (50) boot: ## Label            Usage          Type ST Offset  
 Length
I (57) boot:  0 nvs              WiFi data        01 02 00009000 00006000
I (65) boot:  1 phy_init         RF data          01 01 0000f000 00001000
I (72) boot:  2 factory          factory app      00 00 00010000 00100000
I (80) boot: End of partition table
I (84) esp_image: segment 0: paddr=00010020 vaddr=3c020020 size=083d0h ( 33744) map
I (97) esp_image: segment 1: paddr=000183f8 vaddr=3fc8b800 size=01538h (  5432) load
I (101) esp_image: segment 2: paddr=00019938 vaddr=40380000 size=066e0h ( 26336) load
I (114) esp_image: segment 3: paddr=00020020 vaddr=42000020 size=16780h ( 92032) map
I (132) esp_image: segment 4: paddr=000367a8 vaddr=403866e0 size=04f74h ( 20340) load
I (136) esp_image: segment 5: paddr=0003b724 vaddr=50000010 size=00010h (    16) load
I (141) boot: Loaded app from partition at offset 0x10000       
I (144) boot: Disabling RNG early entropy source...
I (360) cpu_start: Pro cpu up.
I (369) cpu_start: Pro cpu start user code
I (369) cpu_start: cpu freq: 160000000 Hz
I (369) cpu_start: Application information:
I (372) cpu_start: Project name:     blink
I (377) cpu_start: App version:      v5.0-dirty
I (382) cpu_start: Compile time:     Jan 16 2023 22:25:45       
I (388) cpu_start: ELF file SHA256:  b0863a0f26e9d344...        
I (394) cpu_start: ESP-IDF:          v5.0-dirty
I (400) heap_init: Initializing. RAM available for dynamic allocation:
I (407) heap_init: At 3FC8DBE0 len 0004EB30 (314 KiB): DRAM     
I (413) heap_init: At 3FCDC710 len 00002950 (10 KiB): STACK/DRAMI (420) heap_init: At 50000020 len 00001FE0 (7 KiB): RTCRAM     
I (427) spi_flash: detected chip: generic
I (431) spi_flash: flash io: dio
W (435) spi_flash: Detected size(4096k) larger than the size in 
the binary image header(2048k). Using the size in the binary image header.
I (448) cpu_start: Starting scheduler.
I (453) example: Example configured to blink addressable LED!   
I (453) gpio: GPIO[8]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0
I (463) example: Turning the LED OFF!
I (1473) example: Turning the LED ON!
I (2473) example: Turning the LED OFF!

Openocd

PS C:\esp_\openocd-esp32\bin> .\openocd.exe -s ..\share\openocd\scripts\ -f board/esp32c3-builtin.cfg
Open On-Chip Debugger v0.11.0-esp32-20221026-87-gd269916f (2023-01-16-14:04)
Licensed under GNU GPL v2
For bug reports, read
        http://openocd.org/doc/doxygen/bugs.html
Info : only one transport option; autoselect 'jtag'
Info : esp_usb_jtag: VID set to 0x303a and PID to 0x1001
Info : Listening on port 6666 for tcl connections
Info : Listening on port 4444 for telnet connections
Info : esp_usb_jtag: serial (7C:DF:A1:A2:8F:38)
Info : esp_usb_jtag: Device found. Base speed 40000KHz, div range 1 to 255
Info : clock speed 40000 kHz                                   ge 1 to 255
Info : JTAG tap: esp32c3.cpu tap/device found: 0x00005c25 (mfg: 0x612 (Espressif Systems), part: 0x0005, ver: 0x0)             0x612 (Espressif Systems), part: 0
Info : datacount=2 progbufsize=16
Info : Examined RISC-V core; found 1 harts
Info :  hart 0: XLEN=32, misa=0x40101104
Info : starting gdb server for esp32c3 on 3333
Info : Listening on port 3333 for gdb connections
Info : accepting 'gdb' connection on tcp/3333
Warn : No symbols for FreeRTOS!
Info : [esp32c3] Found 8 triggers
Info : Flash mapping 0: 0x10020 -> 0x3c020020, 32 KB
Info : Flash mapping 1: 0x20020 -> 0x42000020, 89 KB
Info : Auto-detected flash bank 'esp32c3.flash' size 4096 KB   
Info : Using flash bank 'esp32c3.flash' size 4096 KB
Info : Flash mapping 0: 0x10020 -> 0x3c020020, 32 KB
Info : Flash mapping 1: 0x20020 -> 0x42000020, 89 KB
Info : Using flash bank 'esp32c3.irom' size 92 KB
Info : Flash mapping 0: 0x10020 -> 0x3c020020, 32 KB
Info : Flash mapping 1: 0x20020 -> 0x42000020, 89 KB
Info : Using flash bank 'esp32c3.drom' size 36 KB
Warn : negative reply, retrying
Warn : Prefer GDB command "target extended-remote :3333" instead of "target remote :3333"                                     d of "target remote :3333"
Info : Detected FreeRTOS version: (10.4.3)

gdb

PS C:\esp\esp-idf\examples\get-started\blink> riscv32-esp-elf-gdb.exe .\build\blink.elf
GNU gdb (esp-gdb) 11.2_20220823
Copyright (C) 2022 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "--host=x86_64-w64-mingw32 --target=riscv32-esp-elf".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<https://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:    <http://www.gnu.org/software/gdb/documentation/>.

For help, type "help".
Type "apropos word" to search for commands related to "word"... 
Reading symbols from .\build\blink.elf...
(gdb) target remote localhost:3333
Remote debugging using localhost:3333
0x40000000 in ?? ()
(gdb) b app_main
Breakpoint 1 at 0x42006b8a: file C:/esp/esp-idf/examples/get-started/blink/main/blink_example_main.c, line 79.
Note: automatically using hardware breakpoints for read-only addresses.
(gdb) mon reset halt
JTAG tap: esp32c3.cpu tap/device found: 0x00005c25 (mfg: 0x612 (Espressif Systems), part: 0x0005, ver: 0x0)
Reset cause (3) - (Software core reset)
(gdb) c
Continuing.
[New Thread 1070140388]
[New Thread 1070142272]
[New Thread 1070135880]
[Switching to Thread 1070140388]

Thread 2 "main" hit Breakpoint 1, app_main () at C:/esp/esp-idf/examples/get-started/blink/main/blink_example_main.c:79
79      {

Please try with the clean build and if you still see the issue send me your project directory.

[erhankur]

@JanWendler is there any update?

[JanWendler]

@JanWendler is there any update?

@erhankur Due to unforeseen circumstances I do not have access to the hardware or the computer from which this problem originated. I don't know when I will be able to test this. You can close the issue if you want.

[erhankur]

Thanks. If you still have an issue, feel free to re-open this.

[mstroven-hiviz]

I have this issue right now. Is anyone working on it?