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SW4STM32 and SW4Linux fully supports the STM32MP1 asymmetric multicore Cortex/A7+M4 MPUs

   With System Workbench for Linux, Embedded Linux on the STM32MP1 family of MPUs from ST was never as simple to build and maintain, even for newcomers in the Linux world. And, if you install System Workbench for Linux in System Workbench for STM32 you can seamlessly develop and debug asymmetric applications running partly on Linux, partly on the Cortex-M4.
You can get more information from the ac6-tools website and download (registration required) various documents highlighting:

System Workbench for STM32


STM32F446V support

Hi,

I have created a simple example using CubeMX for my STM32F446 target board. While MCU’s power is 3.3v, OpenOCD stops and says “Target voltage 0.95v , target voltage may be too low for reliable debugging”. Following are the outout console of GDB and OpenOCD.

I’m wondering that does SW 1.2 supports STM32F446 at all?
Could you please help me with this issue?


Thanks in advance
Bardi

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---------------
Open On-Chip Debugger 0.9.0-dev-00415-g2d4ae3f-dirty (2015-04-22-11:10)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD
adapter speed: 2000 kHz
adapter_nsrst_delay: 100
none separate
srst_only separate srst_nogate srst_open_drain connect_deassert_srst
Info : Unable to match requested speed 2000 kHz, using 1800 kHz
Info : Unable to match requested speed 2000 kHz, using 1800 kHz
Info : clock speed 1800 kHz
Info : STLINK v2 JTAG v17 API v2 SWIM v4 VID 0x0483 PID 0x3748
Info : using stlink api v2
Info : Target voltage: 0.952702
Error: target voltage may be too low for reliable debugging
Error: init mode failed (unable to connect to the target)
in procedure ‘init’
in procedure ‘ocd_bouncer’

Yes, SW4STM32 supports STM32F446 mcus and STM32446E-EVAL board. Are you using this board ? It looks like there is an issue with power supply. Did you change the default position of the jumpers ?

Best Regards,

Pascale

Thanks for hint, anyhow it is not STM32446EVAL!

I was using 3pin SWO connection and the problem was lack of MCU power on STLINKV2. Connecting pin1 to pin19 of 20 pin JTAG fixed it.

Bardi