When I try to program my STM32L476 Discovery board, I receive the following errors: Error: unknown or unsupported device (DevID = 0x0000) Error: Data mismatch found at address 0x08000004 (byte = 0xCD instead of 0x09)

DBURG.2449 · ‎2019-12-26

macOS high Sierra

version 10.13.6

I am unable to access log file under /tmp

I can program this board from a pc

Full console report:

STMicroelectronics ST-LINK GDB server. Version 5.3.2

Starting server with the following options:

Persistent Mode : Disabled

Logging Level : 1

Listen Port Number : 61234

Status Refresh Delay : 15s

Verbose Mode : Disabled

SWD Debug : Enabled

Waiting for debugger connection...

Debugger connected

-------------------------------------------------------------------

STM32CubeProgrammer v2.2.0

-------------------------------------------------------------------

Log output file: /tmp/STM32CubeProgrammer_ORi32V.log

ST-LINK SN : 0672FF575251717867142819

ST-LINK FW : V2J35M26

Voltage : 3.21V

SWD freq : 4000 KHz

Connect mode: Under Reset

Reset mode : Hardware reset

Cannot identify the device

Error: unknown or unsupported device (DevID = 0x0000)

Memory Programming ...

Opening and parsing file: ST-LINK_GDB_server_kyXyTR.srec

File : ST-LINK_GDB_server_kyXyTR.srec

Size : 38932 Bytes

Address : 0x08000000

Erasing memory corresponding to segment 0:

Download in Progress:

File download complete

Time elapsed during download operation: 00:00:00.278

Verifying ...

Error: Data mismatch found at address 0x08000004 (byte = 0xCD instead of 0x09)

Error: Download verification failed

oeliks · ‎2019-12-26

Change GDB server to OCD and try again, if not try under reset. All in debug configuration .

Most errors I see here is when using macOs =) Did You tried it on normal liniux?

Looks like You download software correctly, but in config of mcu you diasable swd, so st link cant find target 0x0000 and cant verify.