Diff: main.cpp

Revision:

3:8ed2cd310fa7

Parent:

2:4e0ed7dc6420

diff -r 4e0ed7dc6420 -r 8ed2cd310fa7 main.cpp
--- a/main.cpp	Fri Jul 25 12:18:06 2014 +0000
+++ b/main.cpp	Sat Jan 31 15:53:05 2015 +0000
@@ -19,24 +19,69 @@
 #include "mbed.h"
 #include "freetronicsLCDShield.h"
 
-freetronicsLCDShield lcd(D8, D9, D4, D5, D6, D7, D3, A0);
+Serial pc(SERIAL_TX, SERIAL_RX);
+
+DigitalOut myled(LED1);
+AnalogIn analog_value(A0);
 
-int main() {
+#define MV(x) ((0xFFF*x)/3300)
+#define V25 1.398
+#define SLOPE 0.0043
+
+int main()
+{
+    wait(0.1);
+
+    freetronicsLCDShield lcd(D6, D7, D2, D3, D4, D5, D8, A1);
     // turn on the back light (it's off by default)
     lcd.setBackLight(true);
+
+
+    
+  
+    
+    
     
     // print the first line and wait 3 sec
-    lcd.printf("mbed application");
-    wait(3);
+    lcd.cls();
+
+    int i = 1;
+    float meas=0;
+    float LP=0.025;
+    float LPT=0.0025;
+    float temp=0;
+    lcd.setCursorPosition(0, 0);
+    lcd.printf("Napeti");
+    ADC1->CR2|=ADC_CR2_TSVREFE;
+    while(1) {
+        meas = LP*analog_value.read()+(1-LP)*meas; // Converts and read the analog input value
+        
+    ADC_RegularChannelConfig(ADC1, 16, 1, ADC_SampleTime_7Cycles5);
     
-    // print the counter prefix; the number will be printed in the while loop
-    lcd.setCursorPosition(1, 0);
-    lcd.printf("counter");
-    
-    int i=1;
-    while (i++) {
-        lcd.setCursorPosition(1, 8);
-        lcd.printf("%d", i);
+   //// Temperature (in °C) = {(V25 - VSENSE) / Avg_Slope} + 25.
+   //v25 = 1.43
+   //avg_slope 4.3mv/c
+
+    ADC_SoftwareStartConvCmd(ADC1, ENABLE); // Start conversion
+
+    while (ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == RESET); // Wait end of conversion
+
+    temp= LPT*((V25-(float)(ADC_GetConversionValue(ADC1))*3.3/4096)/SLOPE+25)+(1-LPT)*temp; // Get conversion value
+          
+        
+        if(meas > 0.5) { // If the value is greater than 1000 mV toggle the LED
+            myled = 1;
+        } else {
+            myled = 0;
+        }
+        i++;
+        if(i==200) {
+            i=0;
+            lcd.setCursorPosition(0, 0);
+            lcd.printf("%2.2f C ", temp);
+            lcd.setCursorPosition(1, 0);
+            lcd.printf("%1.4f V", meas*3.3);
+        }
         wait(0.001);
     }
 }