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Zephyr project on STM32

   Zephyr Workbench, a VSCode extension to manage Zephyr on STM32.
It enables users to easily create, develop, and debug Zephyr applications.
Main features:
  • Install host dependencies.
  • Import toolchain and SDK.
  • Create, configure, build and manage apps.
  • Debug STM32.
You can directly download it from the VSCode marketplace
For more details, visit the Zephyr Workbench

System Workbench for STM32

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You are viewing a reply to printf with openocd on makefile project  

printf with openocd on makefile project

Posted by af.villamil231 on 2021-12-10 12:31

I had to remove the nosys flags. My makefile looks now like this and compiles: 

# libraries
LIBS = -lc -lm -lrdimon
LIBDIR = 
LDFLAGS = $(MCU) -specs=nano.specs -specs=rdimon.specs -T$(LDSCRIPT) $(LIBDIR) $(LIBS) -Wl,-Map=$(BUILD_DIR)/$(TARGET).map,--cref -Wl,--gc-sections


I loaded the code on the STM32F031C6 (STEVAL-PTOOL1V1) and it works. I check the TX pins I have set manually (PB6 for TX and PB7 for RX) and I can see the UART frame. However, nothing is shown on my opencd server terminal when I call printf. I’m not prettu sure if the problem is t the st link Im using. I’m using a ST Link MB1440B which I have updated with the right FW as described in its docs. Then I connect TX and RX to CN9 pins but still not getting anything on the terminal... what am I missing?

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