Declaration of Uart and Progmem #include #include "U0_UART.h" extern const char PROGMEM menuMain[]; extern const char PROGMEM menuPlay[]; const char menuMain[] = "Main Menu\nCreate Song\nPlay Song\nList Songs\n"; const char menuPlay[] = "Play Menu\nSearch By Title\nNumber\n"; int main(void) { stderr = stdout = stdin = &uart_stream; /* Redirecting the standard I/O */ UARTInit(); /* Initial UART */ }