Error: esp_usb_jtag: could not find or open device! (OCD-943)

[aygh4266]

OpenOCD version

v0.12.0-esp32-20240318

Operating System

Windows 11

Using an IDE ?

VSCode

OpenOCD command line

openocd -f board/esp32s3-builtin.cfg

ESP-IDF version

v5.2.2

Problem Description

Hello everyone,

I am trying to debug my code on my ESP32-S3-DevKitM-1 using esp-prog.
I think it is PID VID issue, since the PID VID on my PORT are follwing USB\VID_0403&PID_6010&MI_00 (libwdi autogenerated).

I have tried to reconfigure the esp32s3-builtin.cfg using these commands:

adapter driver ftdi
ftdi vid_pid 0x0403 0x6010
ftdi layout_init 0x0008 0x000b
ftdi layout_signal nSRST -data 0x0020 -oe 0x0020
adapter speed 20000
transport select jtag

set ESP32_ONLYCPU 1
source [find target/esp32s3.cfg]

but I still got another error:

Open On-Chip Debugger v0.12.0-esp32-20240318 (2024-03-18-18:26)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
Info : Listening on port 6666 for tcl connections
Info : Listening on port 4444 for telnet connections
Info : ftdi: if you experience problems at higher adapter clocks, try the command "ftdi tdo_sample_edge falling"
Info : clock speed 20000 kHz
Error: JTAG scan chain interrogation failed: all ones
Error: Check JTAG interface, timings, target power, etc.
Error: Trying to use configured scan chain anyway...
Error: esp32s3.cpu0: IR capture error; saw 0x1f not 0x01
Warn : Bypassing JTAG setup events due to errors
Warn : [esp32s3.cpu0] Unexpected OCD_ID = ffffffff
Error: [esp32s3.cpu0] Examination failed
Warn : target esp32s3.cpu0 examination failed
Warn : [esp32s3.cpu1] Unexpected OCD_ID = ffffffff
Error: [esp32s3.cpu1] Examination failed
Warn : target esp32s3.cpu1 examination failed
Info : starting gdb server for esp32s3.cpu0 on 3333
Info : Listening on port 3333 for gdb connections

The Pin Connection is okay. Any help would be appreicated.

Debug Logs

Open On-Chip Debugger v0.12.0-esp32-20240318 (2024-03-18-18:26)
Licensed under GNU GPL v2
For bug reports, read
        http://openocd.org/doc/doxygen/bugs.html
Info : only one transport option; autoselecting 'jtag'
Info : esp_usb_jtag: VID set to 0x303a and PID to 0x1001
Info : esp_usb_jtag: capabilities descriptor set to 0x2000
Info : Listening on port 6666 for tcl connections
Info : Listening on port 4444 for telnet connections
Error: esp_usb_jtag: could not find or open device!
C:\Users\Labor-Admin\.espressif\tools\openocd-esp32\v0.12.0-esp32-20240318/openocd-esp32/share/openocd/scripts/target/esp_common.cfg:9: Error:
at file "C:\Users\Labor-Admin\.espressif\tools\openocd-esp32\v0.12.0-esp32-20240318/openocd-esp32/share/openocd/scripts/target/esp_common.cfg", line 9

Expected behavior

OpenOCD connected successfully to the board

Screenshots

No response

[erhankur]

@aygh4266 Did you burn any efuse to use JTAG pins instead of USB-SERIAL-JTAG? By default usb-serial-jtag is enabled.

https://docs.espressif.com/projects/esp-idf/en/v5.2.2/esp32s3/api-guides/jtag-debugging/configure-other-jtag.html#configure-efuses

And, for the ESP-PROG you can use -f board/esp32s3-ftdi.cfg

[aygh4266]

@aygh4266 Did you burn any efuse to use JTAG pins instead of USB-SERIAL-JTAG? By default usb-serial-jtag is enabled.

https://docs.espressif.com/projects/esp-idf/en/v5.2.2/esp32s3/api-guides/jtag-debugging/configure-other-jtag.html#configure-efuses

And, for the ESP-PROG you can use -f board/esp32s3-ftdi.cfg

OK I understand it better right now. So basically there are two option to debug the esp idf. Using USB-Serial-JTAG by default or using JTAG with external debugger like ESP PROG. So before I burn the efuse, I am trying to use the USB SERIAL JTAG but I still having issues. I tried this command openocd -f board/esp32s3-builtin.cfg for the serial builtin.

And got this output:

Open On-Chip Debugger v0.12.0-esp32-20240318 (2024-03-18-18:26)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
Info : only one transport option; autoselecting 'jtag'
Info : esp_usb_jtag: VID set to 0x303a and PID to 0x1001
Info : esp_usb_jtag: capabilities descriptor set to 0x2000
Info : Listening on port 6666 for tcl connections
Info : Listening on port 4444 for telnet connections
Info : esp_usb_jtag: serial (F4:12:FA:87:C4:D8)
Info : esp_usb_jtag: Device found. Base speed 40000KHz, div range 1 to 255
Info : clock speed 40000 kHz
Info : JTAG tap: esp32s3.cpu0 tap/device found: 0x120034e5 (mfg: 0x272 (Tensilica), part: 0x2003, ver: 0x1)
Info : JTAG tap: esp32s3.cpu1 tap/device found: 0x120034e5 (mfg: 0x272 (Tensilica), part: 0x2003, ver: 0x1)
Info : [esp32s3.cpu0] Examination succeed
Info : [esp32s3.cpu1] Examination succeed
Info : starting gdb server for esp32s3.cpu0 on 3333
Info : Listening on port 3333 for gdb connections
Info : [esp32s3.cpu0] Debug controller was reset.
Info : [esp32s3.cpu0] Core was reset.
Info : [esp32s3.cpu1] Debug controller was reset.
Info : [esp32s3.cpu1] Core was reset.
Info : [esp32s3.cpu0] Target halted, PC=0x40375D4B, debug_reason=00000000
Info : [esp32s3.cpu0] Reset cause (1) - (Power on reset)
Info : [esp32s3.cpu1] Target halted, PC=0x403789D2, debug_reason=00000000
Info : [esp32s3.cpu1] Reset cause (1) - (Power on reset)

[aygh4266]

Update: I can flash the esp32 using the JTAG but can't debug. Maybe it is a VSCode issue, since i am using esp idf extension

[erhankur]

We are about to release the new idf extension which will be faster than the current one. You can download it from here and give it a try. espressif/vscode-esp-idf-extension#1207 (comment)

Then you can report your debugging issue there or here with the verbose logs.

As I see from your logs, you don't have an issue with the usb-serial-jtag.

[erhankur]

@aygh4266 closing this. Feel free to re-open if you have any other issues.

[PragatiGarg-eaton]

Update: I can flash the esp32 using the JTAG but can't debug. Maybe it is a VSCode issue, since i am using esp idf extension

@erhankur @aygh4266 I’m also facing the same issue, and it’s not related to VSCode since I’ve tried running it through the command line as well.

[PragatiGarg-eaton]

@erhankur Following are the debug logs:

1. For cmd: >openocd -d3 -f board/esp32c3-builtin.cfg

Open On-Chip Debugger v0.12.0-esp32-20240821 (2024-08-21-14:45)
Licensed under GNU GPL v2
For bug reports, read
        http://openocd.org/doc/doxygen/bugs.html
User : 3 15 options.c:52 configuration_output_handler(): debug_level: 3User : 4 15 options.c:52 configuration_output_handler():
Debug: 5 15 options.c:346 parse_cmdline_args(): ARGV[0] = "openocd"
Debug: 6 30 options.c:346 parse_cmdline_args(): ARGV[1] = "-d3"
Debug: 7 34 options.c:346 parse_cmdline_args(): ARGV[2] = "-f"
Debug: 8 36 options.c:346 parse_cmdline_args(): ARGV[3] = "board/esp32c3-builtin.cfg"
Debug: 9 39 options.c:233 add_default_dirs(): bindir=/builds/idf/openocd-esp32/_build/../openocd-esp32/bin
Debug: 10 39 options.c:234 add_default_dirs(): pkgdatadir=/builds/idf/openocd-esp32/_build/../openocd-esp32/share/openocd
Debug: 11 48 options.c:235 add_default_dirs(): exepath=C:/OpenOCD-esp32/821/openocd-esp32/bin
Debug: 12 51 options.c:236 add_default_dirs(): bin2data=../share/openocd
Debug: 14 59 configuration.c:33 add_script_search_dir(): adding C:/OpenOCD-esp32/821/openocd-esp32/bin/../share/openocd/site
Debug: 15 59 configuration.c:33 add_script_search_dir(): adding C:/OpenOCD-esp32/821/openocd-esp32/bin/../share/openocd/scripts
Debug: 16 71 command.c:152 script_debug(): command - ocd_find board/esp32c3-builtin.cfg
Debug: 17 75 configuration.c:88 find_file(): found C:/OpenOCD-esp32/821/openocd-esp32/bin/../share/openocd/scripts/board/esp32c3-builtin.cfg
Debug: 18 83 command.c:152 script_debug(): command - ocd_find interface/esp_usb_jtag.cfg
Debug: 19 89 configuration.c:88 find_file(): found C:/OpenOCD-esp32/821/openocd-esp32/bin/../share/openocd/scripts/interface/esp_usb_jtag.cfg
Debug: 20 96 command.c:152 script_debug(): command - adapter driver esp_usb_jtag
Info : 21 99 transport.c:106 allow_transports(): only one transport option; autoselecting 'jtag'
Debug: 22 104 command.c:152 script_debug(): command - espusbjtag vid_pid 0x303a 0x1001
Info : 23 108 esp_usb_jtag.c:891 esp_usb_jtag_vid_pid(): esp_usb_jtag: VID set to 0x303a and PID to 0x1001
Debug: 24 110 command.c:152 script_debug(): command - espusbjtag caps_descriptor 0x2000
Info : 25 118 esp_usb_jtag.c:902 esp_usb_jtag_caps_descriptor(): esp_usb_jtag: capabilities descriptor set to 0x2000
Debug: 26 120 command.c:152 script_debug(): command - adapter speed 40000
Debug: 27 126 adapter.c:262 adapter_config_khz(): handle adapter khz
Debug: 28 129 adapter.c:226 adapter_khz_to_speed(): convert khz to adapter specific speed value
Debug: 29 134 adapter.c:226 adapter_khz_to_speed(): convert khz to adapter specific speed value
Debug: 30 139 command.c:152 script_debug(): command - ocd_find target/esp32c3.cfg
Debug: 31 144 configuration.c:88 find_file(): found C:/OpenOCD-esp32/821/openocd-esp32/bin/../share/openocd/scripts/target/esp32c3.cfg  
Debug: 32 151 command.c:152 script_debug(): command - ocd_find target/esp_common.cfg
Debug: 33 155 configuration.c:88 find_file(): found C:/OpenOCD-esp32/821/openocd-esp32/bin/../share/openocd/scripts/target/esp_common.cfg
Debug: 34 161 command.c:152 script_debug(): command - ocd_find bitsbytes.tcl
Debug: 35 164 configuration.c:88 find_file(): found C:/OpenOCD-esp32/821/openocd-esp32/bin/../share/openocd/scripts/bitsbytes.tcl
Debug: 36 171 command.c:152 script_debug(): command - ocd_find memory.tcl
Debug: 37 176 configuration.c:88 find_file(): found C:/OpenOCD-esp32/821/openocd-esp32/bin/../share/openocd/scripts/memory.tcl
Debug: 38 182 command.c:152 script_debug(): command - ocd_find mmr_helpers.tcl
Debug: 39 186 configuration.c:88 find_file(): found C:/OpenOCD-esp32/821/openocd-esp32/bin/../share/openocd/scripts/mmr_helpers.tcl
Debug: 40 188 command.c:152 script_debug(): command - ocd_find target/esp_version.cfg
Debug: 41 197 configuration.c:88 find_file(): found C:/OpenOCD-esp32/821/openocd-esp32/bin/../share/openocd/scripts/target/esp_version.cfg
Debug: 42 204 command.c:152 script_debug(): command - version
Debug: 43 206 command.c:152 script_debug(): command - add_help_text program_esp write an image to flash, address is only required for binary images. verify, reset, exit, compress, restore_clock and encrypt are optional
Debug: 44 214 command.c:152 script_debug(): command - add_usage_text program_esp <filename> [address] [verify] [reset] [exit] [compress] [no_clock_boost] [restore_clock] [encrypt]
Debug: 45 225 command.c:152 script_debug(): command - add_help_text program_esp_bins write all the images at address specified in flasher_args.json generated while building idf project
Debug: 46 232 command.c:152 script_debug(): command - add_usage_text program_esp_bins <build_dir> flasher_args.json [verify] [reset] [exit] [compress] [no_clock_boost] [restore_clock]
Debug: 47 241 command.c:152 script_debug(): command - add_help_text esp_get_mac Print MAC address of the chip. Use a `format` argument to return formatted MAC value
Debug: 48 248 command.c:152 script_debug(): command - add_usage_text esp_get_mac [format]
Debug: 49 252 command.c:152 script_debug(): command - jtag newtap esp32c3 tap0 -irlen 5 -expected-id 0x00005c25
Debug: 50 258 tcl.c:405 handle_jtag_newtap_args(): Creating New Tap, Chip: esp32c3, Tap: tap0, Dotted: esp32c3.tap0, 4 params
Debug: 51 259 core.c:1476 jtag_tap_init(): Created Tap: esp32c3.tap0 @ abs position 0, irlen 5, capture: 0x1 mask: 0x3
Debug: 52 271 command.c:152 script_debug(): command - target create esp32c3 esp32c3 -chain-position esp32c3.tap0 -coreid 0 -rtos FreeRTOS
Debug: 53 280 target.c:2139 target_free_all_working_areas_restore(): freeing all working areas
Debug: 54 287 FreeRTOS.c:1472 freertos_create(): freertos_create
Debug: 55 290 command.c:258 register_command(): command 'esp' is already registered
Debug: 56 295 command.c:258 register_command(): command 'esp32c3 esp' is already registered
Debug: 57 301 command.c:152 script_debug(): command - esp32c3 configure -work-area-phys 0x3FC80000 -work-area-virt 0x3FC80000 -work-area-size 0x24000 -work-area-backup 1
Debug: 58 311 target.c:2139 target_free_all_working_areas_restore(): freeing all working areas
Debug: 59 314 target.c:2139 target_free_all_working_areas_restore(): freeing all working areas
Debug: 60 319 target.c:2139 target_free_all_working_areas_restore(): freeing all working areas
Debug: 61 324 target.c:2139 target_free_all_working_areas_restore(): freeing all working areas
Debug: 62 326 command.c:152 script_debug(): command - flash bank esp32c3.flash esp32c3 0x0 0 0 0 esp32c3
Debug: 63 332 command.c:258 register_command(): command 'esp' is already registered
Debug: 64 338 tcl.c:1308 handle_flash_bank_command(): 'esp32c3' driver usage field missing
Debug: 65 341 command.c:152 script_debug(): command - flash bank esp32c3.irom esp32c3 0x0 0 0 0 esp32c3
Debug: 66 342 command.c:258 register_command(): command 'esp' is already registered
Debug: 67 342 command.c:258 register_command(): command 'esp appimage_offset' is already registered
Debug: 68 354 command.c:258 register_command(): command 'esp compression' is already registered
Debug: 69 357 command.c:258 register_command(): command 'esp verify_bank_hash' is already registered
Debug: 70 361 command.c:258 register_command(): command 'esp flash_stub_clock_boost' is already registered
Debug: 71 366 command.c:258 register_command(): command 'esp encrypt_binary' is already registered
Debug: 72 371 command.c:258 register_command(): command 'esp stub_log' is already registered
Debug: 73 374 tcl.c:1308 handle_flash_bank_command(): 'esp32c3' driver usage field missing
Debug: 74 377 command.c:152 script_debug(): command - flash bank esp32c3.drom esp32c3 0x0 0 0 0 esp32c3
Debug: 75 380 command.c:258 register_command(): command 'esp' is already registered
Debug: 76 386 command.c:258 register_command(): command 'esp appimage_offset' is already registered
Debug: 77 390 command.c:258 register_command(): command 'esp compression' is already registered
Debug: 78 394 command.c:258 register_command(): command 'esp verify_bank_hash' is already registered
Debug: 79 397 command.c:258 register_command(): command 'esp flash_stub_clock_boost' is already registered
Debug: 80 404 command.c:258 register_command(): command 'esp encrypt_binary' is already registered
Debug: 81 407 command.c:258 register_command(): command 'esp stub_log' is already registered
Debug: 82 407 tcl.c:1308 handle_flash_bank_command(): 'esp32c3' driver usage field missing
Debug: 83 416 command.c:152 script_debug(): command - esp32c3 configure -event halted 
                global _ESP_WDT_DISABLE
                $_ESP_WDT_DISABLE
                esp halted_event_handler

Debug: 84 423 command.c:152 script_debug(): command - esp32c3 configure -event examine-end
                # Need to enable to set 'semihosting_basedir'
                arm semihosting enable
                arm semihosting_resexit enable
                if { [info exists _SEMIHOST_BASEDIR] } {
                        if { $_SEMIHOST_BASEDIR != "" } {
                                arm semihosting_basedir $_SEMIHOST_BASEDIR
                        }
                }

Debug: 85 439 command.c:152 script_debug(): command - esp32c3 configure -event reset-assert-post
                global _ESP_SOC_RESET
                $_ESP_SOC_RESET

Debug: 86 445 command.c:152 script_debug(): command - esp32c3 configure -event gdb-attach
                if { $_ESP_ARCH == "xtensa" } {
                        $_TARGETNAME_0 xtensa smpbreak BreakIn BreakOut
                }
                # necessary to auto-probe flash bank when GDB is connected and generate proper memory map
                halt 1000
                if { [$_ESP_MEMPROT_IS_ENABLED] } {
                        # 'reset halt' to disable memory protection and allow flasher to work correctly
                        echo "Memory protection is enabled. Reset target to disable it..."
                        reset halt
                }

                if { $_ESP_ARCH == "riscv" } {
                        # by default mask interrupts while stepping
                        riscv set_maskisr steponly
                }

Debug: 87 470 command.c:152 script_debug(): command - riscv set_reset_timeout_sec 2
Debug: 88 473 command.c:152 script_debug(): command - riscv set_command_timeout_sec 5
Debug: 89 477 command.c:152 script_debug(): command - riscv set_mem_access sysbus progbuf abstract
Debug: 90 480 command.c:152 script_debug(): command - riscv set_ebreakm on
Debug: 91 486 command.c:152 script_debug(): command - riscv set_ebreaks on
Debug: 92 490 command.c:152 script_debug(): command - riscv set_ebreaku on
Debug: 93 493 command.c:152 script_debug(): command - esp32c3 riscv expose_csrs 2016=mpcer
Debug: 94 496 command.c:152 script_debug(): command - esp32c3 riscv expose_csrs 2017=mpcmr
Debug: 95 502 command.c:152 script_debug(): command - esp32c3 riscv expose_csrs 2018=mpccr
Debug: 96 506 command.c:152 script_debug(): command - esp32c3 riscv expose_csrs 2051=cpu_gpio_oen
Debug: 97 510 command.c:152 script_debug(): command - esp32c3 riscv expose_csrs 2052=cpu_gpio_in
Debug: 98 512 command.c:152 script_debug(): command - esp32c3 riscv expose_csrs 2053=cpu_gpio_out
Info : 99 521 server.c:299 add_service(): Listening on port 6666 for tcl connections
Info : 100 521 server.c:299 add_service(): Listening on port 4444 for telnet connections
Debug: 101 529 command.c:152 script_debug(): command - init
Debug: 102 532 command.c:152 script_debug(): command - target init
Debug: 103 534 command.c:152 script_debug(): command - target names
Debug: 104 539 command.c:152 script_debug(): command - esp32c3 cget -event gdb-flash-erase-start
Debug: 105 542 command.c:152 script_debug(): command - esp32c3 configure -event gdb-flash-erase-start reset init
Debug: 106 542 command.c:152 script_debug(): command - esp32c3 cget -event gdb-flash-write-end
Debug: 107 552 command.c:152 script_debug(): command - esp32c3 configure -event gdb-flash-write-end reset halt
Debug: 108 553 command.c:152 script_debug(): command - esp32c3 cget -event gdb-attach
Debug: 109 562 target.c:1597 handle_target_init_command(): Initializing targets...
Debug: 110 564 riscv.c:449 riscv_init_target(): [esp32c3] riscv_init_target()
Debug: 111 570 semihosting_common.c:105 semihosting_common_init():
Error: 112 604 esp_usb_jtag.c:636 esp_usb_jtag_init(): esp_usb_jtag: could not find or open device!
Debug: 113 617 command.c:528 exec_command(): Command 'init' failed with error code -4
User : 114 617 command.c:600 command_run_line(): C:/OpenOCD-esp32/821/openocd-esp32/bin/../share/openocd/scripts/target/esp_common.cfg:9: Error:
at file "C:/OpenOCD-esp32/821/openocd-esp32/bin/../share/openocd/scripts/target/esp_common.cfg", line 9
Debug: 115 631 breakpoints.c:328 breakpoint_remove_all_internal(): [esp32c3] Delete all breakpoints
Debug: 116 636 riscv.c:534 riscv_deinit_target(): [esp32c3] riscv_deinit_target()
Error: 117 641 riscv.c:429 get_target_type(): [esp32c3] Unsupported DTM version: -1
Error: 118 644 riscv.c:539 riscv_deinit_target(): [esp32c3] Could not identify target type.
Debug: 119 644 target.c:2139 target_free_all_working_areas_restore(): freeing all working areas

2. openocd -d3 -c 'set ESP_RTOS none' -c 'set ESP_FLASH_SIZE 0' -f target/esp32.cfg -c "init; reset halt"

Open On-Chip Debugger v0.12.0-esp32-20240821 (2024-08-21-14:45)
Licensed under GNU GPL v2
For bug reports, read
        http://openocd.org/doc/doxygen/bugs.html
User : 3 0 options.c:52 configuration_output_handler(): debug_level: 3User : 4 16 options.c:52 configuration_output_handler():
Unexpected command line argument: ESP_RTOS

[erhankur]

@PragatiGarg-eaton Please try installing the drivers using the online installer: https://dl.espressif.com/dl/esp-idf/

For the C3, we have a customized WinUSB driver. You can install it from the link.

And for the other error, try this command

openocd -d3 -c 'set ESP_RTOS none' -c 'set ESP_FLASH_SIZE 0' -f interface/ftdi/esp32_devkitj_v1.cfg -f target/esp32.cfg -c "init; reset halt"

You need to specify both an interface file and the target.

[PragatiGarg-eaton]

@PragatiGarg-eaton Please try installing the drivers using the online installer: https://dl.espressif.com/dl/esp-idf/

For the C3, we have a customized WinUSB driver. You can install it from the link.

And for the other error, try this command

openocd -d3 -c 'set ESP_RTOS none' -c 'set ESP_FLASH_SIZE 0' -f interface/ftdi/esp32_devkitj_v1.cfg -f target/esp32.cfg -c "init; reset halt"

You need to specify both an interface file and the target.

• I already tried by installing WinUSB driver referring: https://docs.espressif.com/projects/esp-idf/en/v5.0/esp32c3/api-guides/jtag-debugging/configure-builtin-jtag.html#configure-usb-drivers
• and https://visualgdb.com/UsbDriverTool/
• 
  
  But same results are observed.
• In addition to this, I came accross the following hardware resistor changes-
  

Reference: https://www.esp32.com/viewtopic.php?f=12&t=21007#p76800, http://esp32.io/viewtopic.php?t=42394#p140421 and http://esp32.io/viewtopic.php?t=42394#p140421

@erhankur, I’m using the ESP32-C2-DevKitM-1 (revision v0.2) and have already tried connecting a USB/TTL converter to the GPIO18 and GPIO19 pins on the board, but it hasn’t worked. Do you think swapping the resistors, as mentioned, is necessary to use USB/JTAG? The resistors are very small and difficult to solder/desolder, so if there are any other alternatives, I’d prefer to avoid risking damage to the board

[erhankur]

Ah, yes, I forgot that the USB connector is connected to the serial bridge, not a built-in USB device.

So, you will need a cable like this: https://www.adafruit.com/product/4448

You don't need to touch the resistors. Just connect the green and white wires to GPIO19 and GPIO18, respectively.

[PragatiGarg-eaton]

Ah, yes, I forgot that the USB connector is connected to the serial bridge, not a built-in USB device.

So, you will need a cable like this: https://www.adafruit.com/product/4448

You don't need to touch the resistors. Just connect the green and white wires to GPIO19 and GPIO18, respectively.

Yeah, I already gave it a try, it is not working even after the USB/ttl connections.

[erhankur]

Please make sure to use a breakout cable instead of a USB/TTL converter.

[PragatiGarg-eaton]

Okay, I'll check with this once.

[PragatiGarg-eaton]

Ah, yes, I forgot that the USB connector is connected to the serial bridge, not a built-in USB device.

So, you will need a cable like this: https://www.adafruit.com/product/4448

You don't need to touch the resistors. Just connect the green and white wires to GPIO19 and GPIO18, respectively.

Hi @erhankur I tried by connecting breakout cable to GPIO18/19 as you mentioned and as per https://docs.espressif.com/projects/esp-idf/en/stable/esp32c3/api-guides/jtag-debugging/configure-builtin-jtag.html

• But I am getting unknown USB device issue now,

• I also tried to install the driver through zadig, but it is failing too, since no USB ID is present and it is unable to identify the hardware here-

• Output from the
  

cc: @igrr