Diff: main.cpp

Revision:

0:ec2a1057416b

Child:

1:f23e11d251ff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Feb 10 18:02:53 2017 +0000
@@ -0,0 +1,39 @@
+#include "mbed.h"
+
+#define MLX90614_ADDR   (0x5A)          // Slave address
+#define MLX90614_TOBJ   (0x07)          // Object temperature register
+
+DigitalOut  led(D13);                   //link leg
+I2C         i2c(D14, D15);              //I2C reg(SDA, SCL)
+Serial      pc(D1, D0);                 //Serial reg
+Ticker      TT;                             //call a timer
+
+char    data_write[1];                  //buff for write
+char    data_read [3];                  //buff for read
+short   Buff = 0x00;
+float   TOBJ = 0.0;
+void    read_MLX();
+
+int main()
+{
+    led = 0;
+    pc.baud(9600);                      //set baud rate
+    i2c.frequency(100000);               //50kHz
+    read_MLX();                         //update MLX data
+    TOBJ = ((float)Buff * 0.02f) - 273.0f;
+    printf("%.2f\n",TOBJ);
+}
+
+
+void read_MLX(void)                     //read MLX data give raw data
+{
+    led = 1;
+    //TOBJ
+    data_write[0] = MLX90614_TOBJ;      //TOBJ address to buff
+    i2c.write( MLX90614_ADDR<<1 | 0x00, data_write, 1, 1);  //command to RAM access SR activated
+    wait_us(50);
+    i2c.read ( MLX90614_ADDR<<1 | 0x01, data_read , 3, 0);  //read callback
+    Buff |=  data_read[1] << 8;         // merging
+    Buff |=  data_read[0];
+    led = 0;
+}
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