Tyler Weaver
Example code for monitoring battery voltage and lighting a LED when battery voltage is below a threshold.
Revision 0:c674d8c52a7e, committed 2012-10-18
- Comitter:
- tylerjw
- Date:
- Thu Oct 18 20:20:01 2012 +0000
- Commit message:
- Battery Monitor Demo
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
| mbed.bld | Show annotated file Show diff for this revision Revisions of this file |
diff -r 000000000000 -r c674d8c52a7e main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Thu Oct 18 20:20:01 2012 +0000
@@ -0,0 +1,22 @@
+#include "mbed.h"
+
+DigitalOut myled(LED1);
+AnalogIn battery(p19);
+DigitalOut battery_warning(p24);
+Serial pc(USBTX, USBRX);
+
+int main() {
+ pc.baud(9600);
+ const float BAT_MUL = 10.26;
+ float sample;
+
+ while(1) {
+ sample = battery.read();
+ pc.printf("VBat: %4.3f, ADC: %4.3f, Vadc: %4.3f\r\n", sample*BAT_MUL, sample, sample*3.3);
+ if(sample*BAT_MUL < 6.4)
+ battery_warning = 0;
+ else
+ battery_warning = 1;
+ wait(1);
+ }
+}
diff -r 000000000000 -r c674d8c52a7e mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Thu Oct 18 20:20:01 2012 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/cd19af002ccc \ No newline at end of file