Diff: main.cpp

Revision:

3:e2e8d92e5fcd

Parent:

2:0c50ce4d9d04

Child:

4:8be5ec736893

diff -r 0c50ce4d9d04 -r e2e8d92e5fcd main.cpp
--- a/main.cpp	Wed Sep 23 22:18:55 2015 +0000
+++ b/main.cpp	Wed Sep 23 23:02:58 2015 +0000
@@ -1,10 +1,14 @@
 #include "mbed.h"
 
-#define LM75_REG_TEMP (0xC6u) // Temperature Register
-#define LM75_REG_CONF (0x41u) // Configuration Register
-#define LM75_ADDR     (0x38u) // LM75 address
-#define RPR0521RS_ProxLSB (0x41u)
-
+#define RPR0521_MODE_CONT_CONTENT (0xC6u) // Temperature Register
+#define RPR0521_MODE_CONT         (0x41u) // Configuration Register
+#define BH1745_SAD              (0x38u) // LM75 address
+#define BH1745_MODE_CONTROL1    (0x41u)
+#define BH1745_MODE_CONTROL2    (0x42u)
+#define BH1745_MODE_CONTROL3    (0x43u)
+#define BH1745_PERSISTANT       (0x61u)
+#define BH1745_CLEAR_LSB        (0x50u)
+ 
 I2C i2c(I2C_SDA, I2C_SCL);
 DigitalOut myled(LED1);
 
@@ -63,11 +67,40 @@
     - Thermostat mode Interrupt
     - Fault tolerance: 0
     */
+      
+    data_write[0] = BH1745_PERSISTANT;
+    data_write[1] = 0x03u; 
+    int status = i2c.write(BH1745_SAD, data_write, 2, 0);
+    if (status != 0) { // Error
+        while (1) {
+            myled = !myled;
+            wait(0.7);
+        }
+    }
     
-    data_write[0] = LM75_REG_CONF;
-    data_write[1] = LM75_REG_TEMP; 
-    int status = i2c.write(LM75_ADDR, data_write, 2, 0);
- 
+    data_write[0] = BH1745_MODE_CONTROL1;
+    data_write[1] = 0x00u; 
+    status = i2c.write(BH1745_SAD, data_write, 2, 0);
+    if (status != 0) { // Error
+        while (1) {
+            myled = !myled;
+            wait(0.7);
+        }
+    }
+    
+    data_write[0] = BH1745_MODE_CONTROL2;
+    data_write[1] = 0x92u; 
+    status = i2c.write(BH1745_SAD, data_write, 2, 0);
+    if (status != 0) { // Error
+        while (1) {
+            myled = !myled;
+            wait(0.7);
+        }
+    }
+    
+    data_write[0] = BH1745_MODE_CONTROL3;
+    data_write[1] = 0x02u; 
+    status = i2c.write(BH1745_SAD, data_write, 2, 0);
     if (status != 0) { // Error
         while (1) {
             myled = !myled;
@@ -79,9 +112,9 @@
     while (1) {
         // I2C Routines *******************************************************
         // Read temperature register
-        data_write[0] = RPR0521RS_ProxLSB;
-        i2c.write(LM75_ADDR, data_write, 1, 1); // no stop
-        i2c.read(LM75_ADDR, data_read, 1, 0);
+        data_write[0] = BH1745_CLEAR_LSB;
+        i2c.write(BH1745_SAD, data_write, 1, 1); // no stop
+        i2c.read(BH1745_SAD, data_read, 1, 0);
     
         // Calculate temperature value in Celcius 
         int tempval = (int)data_read[0];