Maximilian, could you please submit your patch to the gerrit at https://review.openocd.org See https://openocd.org/doc/doxygen/html/patchguide.html for details.
> When the core is halted, the microcontroller seems to reset after some while > and the connection is reestablished. This then happens periodically.. It looks like an active watchdog during halt. See https://review.openocd.org/c/openocd/+/6527/6/tcl/target/gd32e23x.cfg#73 and check ref man if something similar is required for GD32E50x --- ** [tickets:#328] Support GD32E50x chips** **Status:** new **Milestone:** 0.11.0 **Labels:** gigadevice gd32 gd32e50x **Created:** Wed Dec 22, 2021 11:58 PM UTC by Maximilian Gerhardt **Last Updated:** Sun Dec 26, 2021 10:00 AM UTC **Owner:** nobody In recent commits, such as [this](https://github.com/openocd-org/openocd/commit/64a3e7ba4f47c5340543d9a5cadd41bc45d93c93) or [this](https://github.com/openocd-org/openocd/commit/5a0b4889d0d46639b38effd24102f0d5fca1ca31), support for microcontrollers made by Gigadevice was expanded (GD32F1x0, GD32F3x0, GD32E23x). GigaDevice also manufacture the [GD32E50x](http://gd32mcu.com/en/download?kw=GD32E5) line of chips, which contain a Cortex-M33 core. I've bought a [GD32E350C-START board](https://www.aliexpress.com/item/1005003224840104.html) containing an GD32E503CET6 microcontroller. However, OpenOCD has no flashing support for this microcontroller. I've tried various configurations such as the `stm32f4` or `gd32e23x`. The closest one to nearly working seems the latter, which does ``` openocd -d2 -s C:\Users\Max\.platformio\packages\tool-openocd-gd32/scripts -f interface/cmsis-dap.cfg -c "transport select swd" -c "set CPUTAPID 0" -f target/gd32e23x.cfg -c "program {.pio\build\gd32e503c_start\firmware.elf} verify reset; shutdown;" xPack OpenOCD x86_64 Open On-Chip Debugger 0.11.0+dev (2021-12-07-17:33) Licensed under GNU GPL v2 For bug reports, read http://openocd.org/doc/doxygen/bugs.html debug_level: 2 swd 0 Info : CMSIS-DAP: SWD supported Info : CMSIS-DAP: JTAG supported Info : CMSIS-DAP: Atomic commands supported Info : CMSIS-DAP: Test domain timer supported Info : CMSIS-DAP: FW Version = 2.0.0 Info : CMSIS-DAP: Interface Initialised (SWD) Info : SWCLK/TCK = 1 SWDIO/TMS = 1 TDI = 1 TDO = 1 nTRST = 0 nRESET = 1 Info : CMSIS-DAP: Interface ready Info : clock speed 1000 kHz Info : SWD DPIDR 0x0be12477 Info : gd32e23x.cpu: Cortex-M33 r0p4 processor detected Info : gd32e23x.cpu: target has 8 breakpoints, 4 watchpoints Info : starting gdb server for gd32e23x.cpu on 3333 Info : Listening on port 3333 for gdb connections target halted due to debug-request, current mode: Thread xPSR: 0xf9000000 pc: 0xfffffffe msp: 0xfffffffc ** Programming Started ** Error: Cannot identify target as a stm32x Error: auto_probe failed embedded:startup.tcl:1136: Error: ** Programming Failed ** in procedure 'program' in procedure 'program_error' called at file "embedded:startup.tcl", line 1201 at file "embedded:startup.tcl", line 1136 *** [upload] Error 1 ``` The only tool capable of flashing is the [vendor GD-Link Programmer tool](http://gd32mcu.com/en/download?kw=GigaDevice+GD-Link+Programmer) ``` r>GD_Link_CLI.exe GD_Link_CLI V1.2.0.10745. Connected successfully. SWD ID: 0xBE12477 Target Device: GD32E503CET6, Flash Size: 512KB, SRAM Size: 128KB Type '?' for help GD-Link>h Halt operation completed successfully. PC(R15) = EFFFFFFE, MSP = FFFFFFD8, R0 = 00000000, R1 = 00000000, R2 = 00000000, R3 = 00000000, R4 = 00000000, R5 = 00000000, R6 = 00000000, R7 = 00000000, R8 = FFFFFFFF, R9 = FFFFFFFF, R10= FFFFFFFF, R11= FFFFFFFF, R12= FFFFFFFF, R13= FFFFFFD8, R14= FFFFFFB8, xPSR = F9000003, PSP = 00000000, SpecialReg = 00000000, GD-Link>erase Erasing GD32E503CET6 ... Erasing done. Total time needed: 3.188s GD-Link>loadbin firmware.bin 0x8000000 Loading binary file...[0x08000000] . Memory write successfully. Total time needed: 0.859s ``` Please add GD32E50x support to OpenOCD, or let me know what other configurations I can use. I'd happy to contribute in any way. (Note: While GigaDevice has an [openocd fork](https://github.com/GigaDevice-Semiconductor/openocd), it does not contain support for GD32E50x.) --- Sent from sourceforge.net because openocd-devel@lists.sourceforge.net is subscribed to https://sourceforge.net/p/openocd/tickets/ To unsubscribe from further messages, a project admin can change settings at https://sourceforge.net/p/openocd/admin/tickets/options. Or, if this is a mailing list, you can unsubscribe from the mailing list.
