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              【TestAppC.nc】configuration TestAppC
 {
 }
 implementation
 {
 components TestC, MainC;
 components new TimerMilliC() as t0;
 
 TestC.Boot -> MainC.Boot;
 TestC.t0 -> t0;
 }
 【TestC.nc】
 #include <printf.h>
 
 module TestC
 {
 uses interface Boot;
 uses interface Timer<TMilli> as t0;
 }
 implementation
 {
 uint8_t a = 250;
 uint16_t b = 65530u; // 在数字后面加u表示unsigned, 可消除相关警告
 uint32_t c = 4294967290u;
 
 event void Boot.booted(void)
 {
 printf("Hello World!\n");
 printfflush(); // 必须执行这个函数, 否则由于缓存, 发送的内容可能不能及时显示到屏幕上
 call t0.startPeriodic(1000);
 }
 
 event void t0.fired(void)
 {
 printf("a=%u, b=%u, c=%lu\n", a, b, c);
 printfflush();
 
 a++;
 b++;
 c++;
 }
 }
 【Makefile】
 COMPONENT = TestAppC
 CFLAGS += -I$(TOSDIR)/lib/printf
 include $(MAKERULES)
 【run.sh】
 java net.tinyos.tools.PrintfClient -comm serial@/dev/ttyUSB0:telosb
 
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