return usart_write(platform_get_console(), (u8 *)ptr, len) įinally I start the trace in the SWV console in the IDE but I get no output.Īny idea what I am missing ? What about the core clock of the SWV ? I'm not sure what it corresponds to. If (((ITM->TCR & ITM_TCR_ITMENA_Msk) != 0UL) & /* ITM enabled */ I've modified my _write function as follows: static inline unsigned long ITM_SendChar (unsigned long ch) Toolchains supporting all Nucleo boards are: EWARM v7.10. This interface is supported by the openocd version included in Zephyr SDK. It encompasses traditional integrated development environment IDEs with C/C++ compilers and debuggers from major third-parties (free versions up to 64 Kbytes of code, depending on third-party), completed with innovative tools from STMicroelectronics. Programming and Debugging The Nucleo F429ZI board includes an ST-LINK/V2-1 embedded debug tool interface. #write 1 to ITM trace privilege register to unmask Stimulus ports 7:0 The Zephyr console output is assigned to UART3. # Write 0x1 to the ITM Trace Enable Register to enable the Stimulus Port 0 # Write 0x00010005 to the ITM Trace Control Register to enable the ITM with Synchronous enabled and an ATB ID different from 0x00 # Write 0xC5ACCE55 to the ITM Lock Access Register to unlock the write access to the ITM registers # Enable Debug connection in low power modes (DBGMCU->CR) + TPIU for SWV
DEBUGGING A NUCLEO BOARD CODE
# if the code is not located at default address and does not run by reset. # Reset the chip to get to a known state. I'm not sure it is necessary since TrueStudio/Eclipse allows to setup SWV from the GUI but seems easier this way: # Set character encoding
DEBUGGING A NUCLEO BOARD MANUAL
I've modified my startup script as described in STM32L4 reference manual as follows.
On Atollic I modified my Debug Configuration to enable SWV with a core clock of 80MHz. monitor reset Enable Debug connection in low power modes (DBGMCU->CR) + TPIU for SWV set 0圎0042004 (0圎0042004) 0圆7 Write 0xC5ACCE55 to the ITM Lock Access Register to unlock the write access to the ITM registers set 0圎0000FB. I want to migrate to printf using STM32 ITM. Remove 'monitor reset' command if the code is not located at default address and does not run by reset. Until now I was using printf through UART, thanks to the Virtual COM port. I am developping a Firmware on various STM32L4 Nucleo boards with Atollic Truestudio IDE (basically Eclipse).
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