谢谢
#include "LPC21xx.H" /* LPC21xx definitions */
extern void init_serial (void); /* Initialize Serial Interface */
extern int putchar (int ch); /* Write character to Serial Port */
extern int getchar (void); /* Read character from Serial Port */
int main (void) {
unsigned int n;
int snd[32];
IO1DIR = 0x00FF0000; /* P1.16..23 defined as Outputs */
init_serial(); /* Initialize Serial Interface */
putstr("ARM-GCC Blinky Test!!!\n");