Diff: main.cpp

Revision:

0:de8d0a89c229

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sat Apr 16 11:17:07 2011 +0000
@@ -0,0 +1,33 @@
+/* This program outputs the voltage to a DA converter 
+and inputs it into AD converter and displays it to LCD. 
+The voltage changes it to 3.3V by a 0.033 volts step 
+from 0 volts and displays it every 0.5 seconds. 
+DA port is p18. AD port is p20. It is necessary to 
+short-circuit with a wire in p18 and p20 before 
+executing a program. The voltage that output to a 
+DA converter is displayed by the first line of the LCD. 
+The voltage that read with AD converter is displayed 
+by the second line of the LCD.
+*/
+#include "mbed.h"
+#include "TextLCD.h"
+
+TextLCD lcd(p24, p26, p27, p28, p29, p30);
+
+AnalogOut daval(p18);
+AnalogIn adval(p20);
+
+int main() {
+    //lcd.printf("Analog out test\n");
+    while(1) {
+        for(float i=0.0; i<1.0; i+=0.01) {
+            lcd.locate(0,0);
+            lcd.printf("D/A out %0.2fV",i*3.3);
+            daval = i;
+            wait(0.05);
+            lcd.locate(0,1);
+            lcd.printf("A/D in  %0.2fV",adval.read()*3.3);
+            wait(0.5);
+        }
+    }
+}