main.cpp

00001 #include "mbed.h"
00002 
00003 I2C i2c(p9,p10);
00004 Serial pc(USBTX, USBRX);
00005 DigitalOut led1(LED1);
00006 DigitalOut led2(LED2);
00007 DigitalOut led3(LED3);
00008 
00009 int main() {
00010     led1 = 0;
00011     led2 = 0;
00012     led3 = 0;
00013     char cmd[6];
00014     char add[1];
00015     char init[2];
00016     add[0] = 0x01;
00017     init[0] = 0x2A;
00018     init[1] = 0x01;
00019     int number=0;
00020     i2c.frequency(40000);
00021 
00022     wait(0.5);
00023     //init
00024     //set active mode    
00025     while(i2c.write(0x3A,init,2));
00026     led1 = 1;
00027     led2 = 1;
00028     led3 = 1;
00029     
00030     //get analog data
00031     while(1) {
00032         //send procedure
00033         wait(0.07);
00034         switch(number){
00035         case 0:
00036             if(i2c.write(0x3A,add,1) == 0){
00037                 number++;
00038                 led1 = 1;
00039             }else{
00040                 number=0;
00041                 led1 = 0;
00042                 led2 = 0;
00043                 led3 = 1;
00044             }
00045             break;
00046         case 1:
00047             if(i2c.read(0x3A,cmd,6) == 0){
00048                 number++;
00049                 led2 = 1;
00050             }else{
00051                 number=0;
00052                 led1 = 0;
00053                 led2 = 0;
00054                 led3 = 0;
00055             }
00056             break;    
00057         case 2:
00058             //get analog data
00059             pc.printf("\r X = %d,Y = %d,Z = %d                ",cmd[1],cmd[3],cmd[5]);
00060             led3 = 1;
00061             wait(0.5);
00062             led1 = 0;
00063             led2 = 0;
00064             led3 = 0;
00065             number=0;
00066             break;
00067         }
00068     }
00069 }