Loading...
 

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

Forum List Topic List

[ prev topic ]  

GDB with no symbol table and OpenOCD fails libusb_open()

Posted by rnunes on 2016-06-03 16:01

I’m using a Nucleo F446RE board and I’m using System Workbench 1.9.0 to debug in it.

I have CN4 jumpers ON (to enable on board MCU debug), PWR jumper on 2-3 (powered by SWD VBUS) and I connect to it using ST-Link Utility. I already upgraded ST-Link firmware and computer drivers.

I have a C++ project (mixed with C) that uses two static libraries and everything is built and linked with success. When I try to debug it (right click on the project -> Debug as -> Ac6 STM C/C++) I get this from GDB:

“No symbol table is loaded. Use the “file” command.
Function “main” not defined.”

I have -O0 and -g3 flags for every C/C++ compiler flags and -g for assembler as well.

Another problem is that OpenOCD can’t open USB device:

“adapter speed: 2000 kHz
adapter_nsrst_delay: 100
srst_only separate srst_nogate srst_open_drain connect_assert_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
Error: libusb_open() failed with LIBUSB_ERROR_NOT_SUPPORTED
Info : STLINK v2 JTAG v27 API v2 SWIM v15 VID 0x0483 PID 0x374B
Info : using stlink api v2
Info : Target voltage: 3.269266”

First of all, this is supposed to be using SWD and ST-Link v2-1, and it looks like it’s using V2 with JTAG (??). I’ve followed the .cfg files used for this project(nucleo_f446re.cfg)and everything looks fine.

Are these problems related?

Reads: 8589
Link
Posted by JimBob on 2016-06-03 17:30

>Another problem is that OpenOCD can’t open USB device:

Assuming you are using Linux: Permission problem?

To check you could start OOCD with root permissions, but then you should set an appropriate udev rule.

>Are these problems related?

Not in any way.

Link
Posted by rnunes on 2016-06-03 17:40

JimBob, I’m using Windows 8.1 (which I read everywhere that it’s basically a mess with LibUSB devices).

I think I’ve already solved my second problem, I didn’t have my startup folder (maybe I deleted it by accident). Right now I don’t have the missing function error but then again, OpenOCD can’t open the device.

Link

Posted by diabolo38 on 2016-06-09 23:27

is stlink utility able to connect ? if yes disconect or close
is it some usb 3.0 port ? if yes try to plug on different port preferably usb 2.0 ,

Link

Posted by rnunes on 2016-06-10 15:16

It’s a USB 3.0 port, but now it works fine. It still gives the same LIBUSB_ERORR but the OpenOCD provided by AC6 works great.

I first tried to change drivers using a tool but it didn’t worked (at least the application was constantly giving an error).

Link