Reduce size of traces in bootloaders in order to reduce overall bootloader application size.
The idea is to redirect traces directly to serial by implementing a thin driver (similar to UC bootloaders) and avoid the overhead of mbed-os and standard c library when using printf.
If USE_DIRECT_SERIAL_OUTPUT flag set - traces redirected directly to serial.
If USE_PRINTF flag set- printf used for traces.
default configuration is USE_DIRECT_SERIAL_OUTPUT.
For bootloaders that configured with external storage (and are bigger), disabling fflush saves additional space (up to 2 KB)
Reduce size of traces in bootloaders in order to reduce overall bootloader application size. The idea is to redirect traces directly to serial by implementing a thin driver (similar to UC bootloaders) and avoid the overhead of mbed-os and standard c library when using
printf. IfUSE_DIRECT_SERIAL_OUTPUTflag set - traces redirected directly to serial. IfUSE_PRINTFflag set- printf used for traces. default configuration isUSE_DIRECT_SERIAL_OUTPUT.For bootloaders that configured with external storage (and are bigger), disabling
fflushsaves additional space (up to 2 KB)