main.cpp

00001  //Includes
00002 #include "mbed.h"
00003 Timer timer;
00004 #include "USBSerial.h"
00005 
00006 #define I2C_SDA                  PB_9           // The µcontrolleur SDA 
00007 #define I2C_SCL                  PB_8           // The µcontrolleur SCL
00008 
00009 
00010 int Intervalle_Mesures = 300;      //Choix de l'intervalle de mesure en sec
00011 
00012 //Interrupt input
00013 InterruptIn button(PC_13); //User1
00014 
00015 //USART
00016 USBSerial pc(0x1f00, 0x2012, 0x0001, false);
00017 
00018 
00019 //Voie I2C du F411
00020 I2C i2c(I2C_SDA, I2C_SCL);
00021 
00022 //Variables
00023 
00024 float tmp;
00025 char cmd[2];
00026 
00027 //Main program
00028 int main(){
00029     
00030     timer.start();
00031     float time, time1;
00032     
00033     time = timer.read_ms()/1000;
00034     
00035     pc.printf("Initialiation...\t");
00036     cmd[0] = 0x01;
00037     cmd[1] = 0x00;
00038         
00039     i2c.write(0x91, cmd, 2);
00040     cmd[0] = 0x00;
00041     i2c.write(0x91, cmd, 1);
00042     
00043     pc.printf("Initialiation OK\t");
00044     
00045     cmd[0] = 0;
00046     cmd[1] = 0;
00047     while (button == 1) {
00048         time1 = timer.read_ms()/1000;
00049         
00050         if (time1-time>Intervalle_Mesures){
00051             i2c.read(0x90, cmd, 2);
00052         
00053             float x = float(cmd[0])*2;
00054             float y = float(cmd[1])*0.0078125;
00055             tmp = x + y;
00056             pc.printf("%0.2f", tmp);
00057             
00058             time=timer.read_ms()/1000;
00059             time1=timer.read_ms()/1000;
00060         }
00061     }
00062 }
00063         
00064         
00065