彥隆 鄭
Read an analog value using ADC.
Diff: main.cpp
- Revision:
- 0:c2d1ad5059da
- Child:
- 1:0490a15c76e4
diff -r 000000000000 -r c2d1ad5059da main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Fri Feb 21 10:22:49 2014 +0000
@@ -0,0 +1,18 @@
+#include "mbed.h"
+
+AnalogIn analog_value(A0);
+
+DigitalOut myled(LED1);
+
+// Calculate the corresponding acquisition measure for a given value in mV
+#define MV(x) ((0xFFF*x)/3300)
+
+int main() {
+ while(1) {
+ uint16_t meas = analog_value.read_u16(); // Converts and read the analog input value
+ if (meas > MV(1000)) { // If the value is greater than 1000 mV toggle the LED
+ myled = !myled;
+ }
+ wait(0.2); // 200 ms
+ }
+}