Hi,
i have problems to program my STM32F446. It was working some time before but today it didnt. by clicking download code to flash memory i get an error message, saying "error flash download failed" after that directly following "Error: Flash Download failed - target DLL has been cancelled".
Set up was not changed in the meanwhile. A sesond board is working perfectly -> same setup. I recognized that the firmware is going into an error once started. It monitors the I2C Bus and is not able to send data (bus busy), the programm stops there. UART is working, i get a message on the terminal (printf) indicating where the code stops working. I want to flash a new programm but i fail ... connecting to the second board and everythings works, therefore i cant believe my connections are wrong. Has it something to do with the fact, the the STM is going into a hard fault or something as soon as getting VCC connected and from there i have no chance to reach him?
I am using:
ST-LINK/V2-1, programming via swd
IDE-Version:
µVision V5.28.0.0
Tool Version Numbers:
Toolchain: MDK-Lite Version: 5.28.0.0
Toolchain Path: C:\Keil_v5\ARM\ARMCC\Bin
C Compiler: Armcc.exe V5.06 update 6 (build 750)
Assembler: Armasm.exe V5.06 update 6 (build 750)
Linker/Locator: ArmLink.exe V5.06 update 6 (build 750)
Library Manager: ArmAr.exe V5.06 update 6 (build 750)
Hex Converter: FromElf.exe V5.06 update 6 (build 750)
CPU DLL: SARMCM3.DLL V5.28.0.0
Dialog DLL: TCM.DLL V1.36.2.0
Target DLL: STLink\ST-LINKIII-KEIL_SWO.dll V3.0.6.0
Dialog DLL: TCM.DLL V1.36.2.0
