Brian Starkey / Mbed 2 deprecated bees_disruptor

A freq gen

Dependencies:   C12832_lcd LM75B mbed

Diff: main.cpp

Revision:
0:606db2d43559
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sat Jan 30 16:53:54 2016 +0000
@@ -0,0 +1,30 @@
+#include "mbed.h"
+#include "C12832_lcd/C12832_lcd.h"
+#include "LM75B/LM75B.h"
+
+PwmOut spkr(p26);
+AnalogIn fine(p19);
+AnalogIn coarse(p20);
+C12832_LCD lcd("LCD");
+
+int main()
+{
+    int us, last_us, freq;
+    spkr.write(0.5);
+
+    while(1) {
+        freq = (int)(50000.0 * coarse.read()) + (1000.0 * fine.read());
+        us = 1000000 / freq; 
+        lcd.locate(0,3);
+        lcd.printf("Freq: %5i Hz", freq);
+        lcd.locate(0,12);
+        lcd.printf("     (%7i us)", us);
+
+        if (us != last_us) {
+            last_us = us;
+            spkr.write(0.5);
+            spkr.period_us(us);
+        }
+        wait(0.01);
+    }
+}
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