Jordan Ford / Mbed 2 deprecated CapSense

Measure capacitances by counting rising edges of a 555 astable oscillator.

Dependencies:   4DGL-uLCD-SE mbed

Diff: main.cpp

Revision:
0:292d0c987fe3
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Mar 24 19:47:55 2014 +0000
@@ -0,0 +1,22 @@
+#include "mbed.h"
+#include "capSense.h"
+#include "uLCD_4DGL.h"
+
+
+#define RA 19770    // ohms
+#define RB 9053    // ohms
+#define PERIOD 2000000  //us
+ 
+uLCD_4DGL uLCD(p9, p10, p11);    // lcd connection
+CapSense cap(RA, RB, PERIOD, p21);
+
+int main() {
+    uLCD.locate(3,5);   //setting the cursor to the middle
+
+    while(1) {
+        uLCD.locate(0,6);   // setting cursor    
+        float capacitance = cap.measure();    
+        uLCD.printf("Capacitance:\n%f uF   \n\n", capacitance);
+        uLCD.printf("Frequency:\n%f Hz        ",(float)cap._count/PERIOD*1000000);
+    }   
+}
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