the printf in printf-stdarg.h is not thread safe

[umairsiddiqui-digitek]

it would be nice if you use a thread safe version of printf .
one such threadsafe printf:
thread safe version of printf found on freertos forum

[henrique-silva]

Yes, these [v][s][n]printf could cause some stack corruptions as a lot of people reported on the forums.
I didn't change it before because the print itself was only used during debug routines, but it should definitely be thread-safe.

I'll try to replace the current code for the FreeRTOS implementation and check if it works correctly

Thanks!

[umairsiddiqui-digitek]

what about adding FreeRTOS_Plus_IO, it can used for both I2C and UART.

https://www.freertos.org/FreeRTOS-Plus/FreeRTOS_Plus_IO/FreeRTOS_Plus_IO.shtml

https://www.freertos.org/FreeRTOS-Plus/FreeRTOS_Plus_IO/Character_Queue_Transfer_Mode.shtml

printf can call write() function of FreeRTOS_Plus_IO.