Can't do JSON output on 0; compile error:
Code:
sketch/main.cpp: In function 'void pushSerial0Character(uint8_t)':
main.cpp:5895: error: expected primary-expression before ')' token
while ((UCSR0A & ) == 0); // wait until USART0 data buffer is empty
^
exit status 1
expected primary-expression before ')' token
Trying to debug as best I can (or set correct parameters if I've set them incorrectly to generate this error.
JSON output on serial1 does not generate this error.