Diff: main.cpp

Revision:

0:99902f3f1508

Child:

1:b5c4ca3bf074

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Feb 28 19:28:00 2017 +0000
@@ -0,0 +1,44 @@
+/* ELEC1620 Application Board Example
+
+TMP36
+
+(c) Dr Craig A. Evans, University of Leeds, Feb 2017
+
+*/
+
+#include "mbed.h"
+#include "N5110.h"
+
+// JP1 on board must be in 2-3 position
+N5110 lcd(p8,p9,p10,p11,p13,p21);
+
+// Temperature sensor connected to ADC pin
+AnalogIn tmp36(p16);
+
+int main() {
+    
+    lcd.init();  // need to initialise the LCD
+    
+    while(1) {
+        
+        // read in the ADC value and convert to voltage
+        float voltage = 3.3f * tmp36.read();
+        
+        // T = 100V - 50
+        // convert voltage to temperature
+        float temperature = 100.0f*voltage - 50.0f;
+        
+        // we need an array of chars to store the message
+        char buffer[14];  // max screen witdth is 14
+        // print message to buffer
+        sprintf(buffer,"T=%.2f C",temperature);
+        // print to screen (x pixel, line number)
+        lcd.printString(buffer,0,0);
+        // update the LCD
+        lcd.refresh(); 
+        
+        // small delay between readings
+        wait(1.0);
+        
+    }
+}