Hello Alan,
I ever made console printf demo with TRK-KEA board. it works fine on my side.
there is two points we need to pay attention:
1. to have accurate serial baud rate: if clock ICS mode is FEI, I trim slow internal reference clock to 37.44k. this will get accurate SCI baud clock:
bus clock= 37.44k*1280/2=47.932M
SCI baud rate = bus clock/39/16=38400
you needn't set baud rate as accurate as above, but if the result deviates more, the output to screenshot through SCI is messy code per my test.
2. choose right UART port for consolveIO based on the board design.
for example, I use TRK-KEA board, according to schematic, Open SDA CDC uses KEA128 UART2. if you use other UART, CDC can't work.
I attached my testing code. ConsoleIO functions works well with my TRK-KEA board, baud rate is 384000.
Have a great day,
Zhang Jun
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