main.cpp

00001 #include "mbed.h"
00002 
00003 Serial pc(USBTX, USBRX);
00004 
00005 #if defined(TARGET_LPC4088)
00006 Serial uart(P4_22, P4_23);
00007 #elif defined(TARGET_MAXWSNENV)
00008 Serial uart(P0_1, P0_0);
00009 #elif defined(TARGET_SAMR21G18A) || defined(TARGET_SAMD21J18A) || defined(TARGET_SAMD21G18A)
00010 Serial uart(PA16, PA17);
00011 #elif defined(TARGET_SAMG55J19)
00012 Serial uart(PB10, PB11);
00013 #else
00014 Serial uart(p9, p10);
00015 #endif
00016 
00017 DigitalOut led1(LED1);
00018 DigitalOut led2(LED2);
00019 
00020 // This function is called when a character goes into the RX buffer.
00021 void rxCallback(void) {
00022     led1 = !led1;
00023     pc.putc(uart.getc());
00024 }
00025 
00026 
00027 int main() {
00028     // Use a deliberatly slow baud to fill up the TX buffer
00029     uart.baud(1200);
00030     uart.attach(&rxCallback, Serial::RxIrq);
00031 
00032     printf("Starting test loop:\n");
00033     wait(1);
00034 
00035     int c = 'A';
00036     for (int loop = 0; loop < 512; loop++) {
00037         uart.printf("%c", c);
00038         c++;
00039         if (c > 'Z') c = 'A';
00040     }
00041 
00042     while (true) {
00043         led2 = !led2;
00044         wait(1);
00045     }
00046 }