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Show/hide line numbers main.cpp Source File

main.cpp

00001 #include "mbed.h"
00002 
00003 DigitalOut led1(LED1);
00004 DigitalOut led2(LED2);
00005 DigitalOut led3(LED3);
00006 DigitalOut led4(LED4);
00007 
00008 void ledout(int pat) {
00009     led1 = pat & 1;
00010     led2 = pat >> 1 & 1;
00011     led3 = pat >> 2 & 1;
00012     led4 = pat >> 3 & 1;
00013 }
00014 
00015 int main() {
00016     int i;
00017 
00018     while (1) {
00019         // move left
00020         for (i = 0x01; i != 0x8; i <<= 1) {
00021             ledout(i);
00022             wait(0.2);
00023         }
00024         // move right
00025         for (i = 0x08; i != 1; i >>= 1) {
00026             ledout(i);
00027             wait(0.2);
00028         }
00029     }
00030 }
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