STM32 connection problem

[MystikReasons]

After playing around with the I2C clock under the generated function: <SystemClock_Config> I cannot connect to the board anymore.

I replaced every setting I set but it still won’t work.

The code has been generated with the STM32CubeMX.

C:\Users\jense\AppData\Local\VisualGDB\EmbeddedDebugPackages\com.sysprogs.arm.openocd\bin\openocd.exe -c “gdb_port 59525” -c “telnet_port 59526” -f interface/stlink-v2-1.cfg -f target/stm32l0.cfg -c init -c “reset init” -c “echo VisualGDB_OpenOCD_Ready”
Open On-Chip Debugger 0.10.0 (2018-12-12) [https://github.com/sysprogs/openocd]
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
WARNING: interface/stlink-v2-1.cfg is deprecated, please switch to interface/stlink.cfg
Info : auto-selecting first available session transport “hla_swd”. To override use ‘transport select <transport>’.
adapter speed: 300 kHz
adapter_nsrst_delay: 100
Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD
none separate
Info : clock speed 300 kHz
Info : STLINK V2J28M17 (API v2) VID:PID 0483:374B
Info : Target voltage: 3.239448
Error: init mode failed (unable to connect to the target)
in procedure ‘init’
in procedure ‘ocd_bouncer’

 

VisualGDB version: 5.4.100.2737
—————— System.Exception ——————
System.Exception: init mode failed (unable to connect to the target)
at VisualGDB.Common_GUI.WPF.DebugMethodTestWindow.ThrowTestFailedException()
at VisualGDB.Common_GUI.WPF.DebugMethodTestWindow.TestThreadBody()

[MystikReasons]

The problem was I’ve set the i2c frequency in cubemx to 400kHz in Fast Mode but I only got ~50kHz on the SCL line. So I just changed the i2c clock source from PCLK1 to HSI 16. But this destroyed my whole communication and I don’t know why.

[MystikReasons]

Problem solved.

I’ve rebuild the whole solution and now it seems to work again.

• This reply was modified 5 years, 3 months ago by MystikReasons.

[support]

Good to know it works. If you would like to find out why the I2C frequency setting affects debugging, please consider creating a thread on the ST forum – someone from the ST community might have an insight into this.

[Author]

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