Unable to run code STM32F411RET6

Question

Hi,I'm unable to run code in my STM32F411RET6 when i'm running code, the debugger print :"Open On-Chip Debugger 0.11.0+dev-00449-g53fa0f7 (2022-06-09-09:40) Licensed under GNU GPL v2Info : Listening on port 6666 for tcl connectionsInfo : Listening on port 4444 for telnet connectionsInfo : connected to stlink-serverInfo : stlink-server API v3, version 2.1.0Info : STLINK V2J40M27 (API v2) VID:PID 0483:374BInfo : Target voltage: 3.280053Info : Unable to match requested speed 8000 kHz, using 4000 kHzInfo : Unable to match requested speed 8000 kHz, using 4000 kHzInfo : clock speed 4000 kHzInfo : stlink_dap_op_connect(connect)Info : SWD DPIDR 0x2ba01477Info : STM32F411RETx.cpu: Cortex-M4 r0p1 processor detectedInfo : STM32F411RETx.cpu: target has 6 breakpoints, 4 watchpointsInfo : STM32F411RETx.cpu: external reset detectedInfo : starting gdb server for STM32F411RETx.cpu on 3333Info : Listening on port 3333 for gdb connectionsInfo : accepting 'gdb' connection on tcp/3333target halted due to debug-request, current mode: Thread xPSR: 0x01000000 pc: 0x08000284 msp: 0x20020000configuring PLLInfo : Unable to match requested speed 8000 kHz, using 4000 kHzInfo : Unable to match requested speed 8000 kHz, using 4000 kHzInfo : device id = 0x10006431Info : flash size = 512 kbytesError: Failed to read memory at 0x20020004Error: Failed to read memory at 0x20020020Error: Failed to read memory at 0x20020004Error: Failed to read memory at 0x20020020Info : accepting 'gdb' connection on tcp/3333Error: Failed to read memory at 0x20020004Error: Failed to read memory at 0x20020020Error: Failed to read memory at 0x20020004Error: Failed to read memory at 0x20020020target halted due to debug-request, current mode: Thread xPSR: 0x01000000 pc: 0x08000284 msp: 0x20020000configuring PLLInfo : Unable to match requested speed 8000 kHz, using 4000 kHzInfo : Unable to match requested speed 8000 kHz, using 4000 kHztarget halted due to debug-request, current mode: Thread xPSR: 0x01000000 pc: 0x08000808 msp: 0x20020000Info : dropped 'gdb' connectionshutdown command invokedInfo : dropped 'gdb' connection"And it put a breakpoint to "HAL_Init()", I don't know how this happens, yesterday when I running the blinked led example it worked, I can't provide you more information sorry, I'm a beginner.

Tesla DeLorean · Accepted Answer

STM32F411RET6 that's a chip part number, you have that on a white NUCLEO board like in the video?

Does STM32 Cube Programmer indicate any sort of error?

Can you perhaps build an example, and write the .HEX or .ELF file directly using Cube Programmer?

STM32Cube_FW_F4_V1.24.0\Projects\STM32F411RE-Nucleo\Examples\GPIO\GPIO_IOToggle

I don't care for the GDB/OCD, the Keil or IAR tools are more reliable.

Tesla DeLorean · Answer

>>I'm a beginner.Ok, this gives you some leeway, but explain your situations with some contextual detailCan you indicate what board this is?Something you constructed, a NUCLEO-F411RE, Black Pill, something else?How and what pins connect to the ST-LINK?Are you following some tutorial? Cite it.Presumably you're using something like STM32 CubeIDE ?Is the board accessible with tools like STM32 Cube Programmer?Did the board work at some point, and then stop? I see the LED thing had worked. Does the board have any jumpers or switches on it?

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