Ben Schueler
Simple Voltage meter. The analog value is shown on a LCD and on the four LEDs ( fading mode ).
Revision 0:13f61a33458d, committed 2011-02-14
- Comitter:
- Schueler
- Date:
- Mon Feb 14 08:12:38 2011 +0000
- Commit message:
- 1.0
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TextLCD.lib Mon Feb 14 08:12:38 2011 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/simon/code/TextLCD/#a53b3e2d6f1e
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Mon Feb 14 08:12:38 2011 +0000
@@ -0,0 +1,54 @@
+#include "mbed.h"
+#include "TextLCD.h"
+
+
+//TextLCD lcd( p11, p12, p30, p29, p28, p27, TextLCD::LCD20x4 ); // rs, e, d0-d3
+//TextLCD lcd(p24, p25, p26, p27, p28, p29, p30); // rs, rw, e, d4, d5, d6, d7
+TextLCD lcd(p24, p26, p27, p28, p29, p30); // rs, rw, e, d4, d5, d6, d7
+Serial pc( USBTX, USBRX );
+//DigitalOut LEDOUT0( LED1 );
+//DigitalOut LEDOUT1( LED2 );
+//DigitalOut LEDOUT2( LED3 );
+//DigitalOut LEDOUT3( LED4 );
+PwmOut led1 (LED1);
+PwmOut led2 (LED2);
+PwmOut led3 (LED3);
+PwmOut led4 (LED4);
+AnalogIn A0( p20 );
+
+float i;
+float l;
+int j;
+int cnt = 0;
+
+int main() {
+ led1 = led2 = led3 = led4 = 0;
+ pc.printf("\x1B\x48\x1B\x4A");
+ pc.printf("Voltmeter\n\r");
+ lcd.printf("Voltmeter");
+ lcd.locate(0,2);
+ lcd.printf("0-----1-----2-----3-");
+ while(1) {
+ i = A0;
+ l = i * 4;
+ cnt = cnt < 8 ? ++cnt : 0;
+ if (cnt == 0 )
+ {
+ i *= 3.3; // 1.0 -> 3.3V
+ lcd.locate(0,1);
+ lcd.printf( "%1.3f " , i );
+ for ( int j = 0; j < 20 ; j++ )
+ {
+ lcd.locate(j,3);
+ if ( ( (float) j ) / 20 * 3.3 < i ) { lcd.printf( "\xFF" ); } else { lcd.printf( "_" ); }
+ }
+ pc.printf("\x1B\x48");
+ pc.printf( "\n\n\rMeasured : %1.3f" , i );
+ }
+ if ( l < 1 ) { led1 = l; l = 0; } else { led1 = 1; l = l - 1; }
+ if ( l < 1 ) { led2 = l; l = 0; } else { led2 = 1; l = l - 1; }
+ if ( l < 1 ) { led3 = l; l = 0; } else { led3 = 1; l = l - 1; }
+ if ( l < 1 ) { led4 = l; l = 0; } else { led4 = 1; l = l - 1; }
+ wait(0.05);
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Mon Feb 14 08:12:38 2011 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/e2ac27c8e93e