Revision 0:e1cf607d5c64, committed 2017-03-28

Comitter:

coola

Date:

Tue Mar 28 14:55:30 2017 +0000

Commit message:

Code_prof

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Mar 28 14:55:30 2017 +0000
@@ -0,0 +1,103 @@
+#include "mbed.h"
+
+#define MPU_ADDR     (0x68<<1) // MPU address
+#define MPU_REG_PWR1 (0x68) 
+#define MPU_REG_TEMP (0x41) // Temperature Register 
+#define MPU_REG_ID (0x75) // Who am I Register
+
+
+I2C i2c(I2C_SDA, I2C_SCL);  // Add 10k pull-up
+
+DigitalOut myled(LED1);
+
+Serial pc(SERIAL_TX, SERIAL_RX);
+
+Timer t;
+
+char data_write[7];
+char data_read[51];
+char flag=0;
+
+
+void get_data();
+
+void soft_reset();
+
+void read_registers();
+
+void int1_flag()
+{
+    
+     flag=1;
+        
+    }
+    
+
+int main()
+{
+    int16_t temp=0;
+    float tempf;
+    int16_t aX;
+    int16_t aY;
+    int16_t aZ;
+    
+    int32_t debut=0;
+    int32_t fin=0;    
+    char status;
+    
+ //   pc.baud(115200);
+ //   i2c.frequency(400000);
+    
+    // Hello
+    pc.printf("Hello world\r\n");
+ 
+    
+    // reset accelerometer registers
+  soft_reset();
+    
+    // Switch on accelerometer + parameters :
+
+    data_write[0] = MPU_REG_PWR1;
+    data_write[1] = 0;   // exit sleep mode
+    status = i2c.write(MPU_ADDR, data_write, 2, 0);
+ /*   pc.printf("statuswrite=%d\t",status);
+    if (status != 0) { // Error
+        while (1) {
+            myled = !myled;
+            wait(0.2);
+        }
+    }
+ */
+    
+   // read_registers();
+    wait(0.2);
+
+    // Read Accelerometer ID
+    // Read ID register
+    data_write[0] = MPU_REG_ID;
+    i2c.write(MPU_ADDR, data_write, 1, 1); // no stop
+    i2c.read(MPU_ADDR, data_read, 1, 0);
+    // pc.printf("statusread=%d\n\r",status);
+    pc.printf("I am n°0x%x ",data_read[0]);
+    //Read Temperature
+    data_write[0] = MPU_REG_TEMP;
+    i2c.write(MPU_ADDR, data_write, 1, 1);
+    i2c.read(MPU_ADDR, data_read, 2, 0);
+    temp = (int16_t)((int16_t)data_read[0] << 8) | data_read[1];
+    tempf=((float)temp)/340+36.53;
+    pc.printf("and the temperature is %f °C\n\r",tempf);
+    t.start();
+    
+    while (1) {
+  
+    }
+
+}
+
+
+void soft_reset()
+{
+    data_write[0] = MPU_REG_PWR1;
+    data_write[1] = 1<<7;
+    i2c.write(MPU_ADDR, data_write, 2, 0);
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Tue Mar 28 14:55:30 2017 +0000
@@ -0,0 +1,1 @@
+https://mbed.org/users/mbed_official/code/mbed/builds/093f2bd7b9eb
\ No newline at end of file