Diff: main.cpp

Revision:

0:1e7ffdb6d1db

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Mar 20 13:16:01 2014 +0000
@@ -0,0 +1,102 @@
+#include "main.h"
+  
+DigitalOut cs(p14);         // Digital output used for the ship select control. 
+DigitalOut myled(LED1);     //LED 
+SPI spi(p11, p12, p13);     // SPI port (mosi, miso, sclk) 
+I2C i2c(p9, p10);            // I2C port (sda, scl) 
+//Serial pc(USBTX, USBRX);    // PC serial communication 
+
+void WriteToRegister(int address, int startingRegister, int data2Write) 
+{ 
+    char data[2]; 
+    data[0] = startingRegister; 
+    data[1] = data2Write; 
+  
+    i2c.write(address, data, 2); 
+} 
+  
+int ReadRegister(int address, int startingRegister) 
+{ 
+    char content[1]; 
+    char reg[1]; 
+    reg[0] = startingRegister; 
+      
+    i2c.write(address, reg, 1, true); 
+    i2c.read(address, content, 1); 
+      
+    return content[0]; 
+} 
+  
+char i2c_read_reg(char address) //fonction qui lit les valeurs des registres 
+{    
+    // Read from selected register adress 
+    i2c.start();                                          
+    i2c.write(MMA8452_WRITE_ADDRESS);    
+    i2c.write(address);                  
+    i2c.start();                         
+    i2c.write(MMA8452_READ_ADDRESS);     
+    char data = i2c.read(0);             
+    i2c.stop();                          
+   
+    // return the data readed 
+    return data;    
+} 
+  
+bool initAccel() //fonction qui initialise l'accelerometre avec i2c 
+{ 
+    // Start I2C communication    
+    char data = i2c_read_reg(WHO_AM_I); 
+    if(data != 0x2A) 
+    { 
+        return false; 
+    } 
+      
+
+  
+// Put accelerometer in active mode at 6.25Hz 
+    WriteToRegister(MMA8452_WRITE_ADDRESS, CTRL_REG1, 0x31); 
+      
+    // Put accelerometer in standby mode at 6.25Hz 
+    WriteToRegister(MMA8452_WRITE_ADDRESS, CTRL_REG1, 0x30); 
+       
+    // Set accelerometer in 4g range 
+    WriteToRegister(MMA8452_WRITE_ADDRESS, XYZ_DATA_CFG, 0x1); 
+       
+    // Put accelerometer in active mode at 6.25Hz 
+    WriteToRegister(MMA8452_WRITE_ADDRESS, CTRL_REG1, 0x31); 
+          
+      
+      
+    return true;      
+} 
+  
+  
+  
+unsigned short getAccelValue(char MSB_addr) //fonction qui lit les registres de données de l'accelerometre 
+{ 
+    return i2c_read_reg(MSB_addr);           // Read MSB data from MSB register 
+} 
+  
+  
+  
+int main()  
+{ 
+        std::vector<int> x_array;
+//      int i = 0;
+    Thread thread1(collector_thread);
+    
+        
+    //appelle des fonctions d'initialisations 
+    initAccel();    //accelerometre 
+    
+    
+      
+    myled = 0; 
+    
+    while(1)  
+    { 
+        wait_ms(10); 
+          
+   
+    } 
+} 
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