Diff: main.cpp

Revision:

4:8be5ec736893

Parent:

3:e2e8d92e5fcd

Child:

5:bd9652c0f991

--- a/main.cpp	Wed Sep 23 23:02:58 2015 +0000
+++ b/main.cpp	Thu Sep 24 21:50:52 2015 +0000
@@ -2,12 +2,13 @@
 
 #define RPR0521_MODE_CONT_CONTENT (0xC6u) // Temperature Register
 #define RPR0521_MODE_CONT         (0x41u) // Configuration Register
-#define BH1745_SAD              (0x38u) // LM75 address
+#define BH1745_SAD              (0x38u)   // BH1745 address
+#define BH1745_SYSTEM_CONTROL   (0x40u)
 #define BH1745_MODE_CONTROL1    (0x41u)
 #define BH1745_MODE_CONTROL2    (0x42u)
 #define BH1745_MODE_CONTROL3    (0x43u)
 #define BH1745_PERSISTANT       (0x61u)
-#define BH1745_CLEAR_LSB        (0x50u)
+#define BH1745_CLEAR_LSB        (0x56u)
  
 I2C i2c(I2C_SDA, I2C_SCL);
 DigitalOut myled(LED1);
@@ -18,7 +19,7 @@
 */
 
 // LED blink rate: higher -> faster blinking
-#define LED_BLINK_RATE 8  //Hertz
+#define LED_BLINK_RATE 18  //Hertz
 
 //Define the LED pin output
 //DigitalOut data00(D0); 
@@ -61,7 +62,7 @@
     
     // Configure I2C **********************************************************
     char data_write[2];
-    char data_read[2];
+    char data_read[6];
  
     /* Configure the Temperature sensor device STLM75:
     - Thermostat mode Interrupt
@@ -79,7 +80,7 @@
     }
     
     data_write[0] = BH1745_MODE_CONTROL1;
-    data_write[1] = 0x00u; 
+    data_write[1] = 0x05u; 
     status = i2c.write(BH1745_SAD, data_write, 2, 0);
     if (status != 0) { // Error
         while (1) {
@@ -112,12 +113,17 @@
     while (1) {
         // I2C Routines *******************************************************
         // Read temperature register
-        data_write[0] = BH1745_CLEAR_LSB;
+        data_write[0] = BH1745_SYSTEM_CONTROL;
         i2c.write(BH1745_SAD, data_write, 1, 1); // no stop
-        i2c.read(BH1745_SAD, data_read, 1, 0);
+        i2c.read(BH1745_SAD, data_read, 6, 0);
     
         // Calculate temperature value in Celcius 
-        int tempval = (int)data_read[0];
+        int tempval1 = (int)data_read[0];
+        int tempval2 = (int)data_read[1];
+        int tempval3 = (int)data_read[2];
+        int tempval4 = (int)data_read[3];
+        int tempval5 = (int)data_read[4];
+        int tempval6 = (int)data_read[5];
         /*
         tempval >>= 7;
         if (tempval <= 256) {
@@ -152,8 +158,8 @@
         //*********************************************************************
  
         // UART
-        if (print_timer.read() >= 5) {  //print_timer.read() returns time in seconds
-            printf("Hello Francis %d!\n",tempval);
+        if (print_timer.read() >= 1) {  //print_timer.read() returns time in seconds
+            printf("Francis' Test: %d, %d, %d, %d. %d, %d!\n",tempval1,tempval2,tempval3,tempval4,tempval5,tempval6);
             print_timer.reset();        //Resets timer count to 0
         }