Robert Banu
/
Project
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Revision 0:8c4301046871, committed 2019-09-20
- Comitter:
- BRD
- Date:
- Fri Sep 20 07:46:16 2019 +0000
- Commit message:
- First;
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 |
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Fri Sep 20 07:46:16 2019 +0000
@@ -0,0 +1,36 @@
+// For this example, you need the BioRobotics shield.
+// Connect POT2 (frequency)to A0
+// Connect POT1 (pwm) to A1
+#include "mbed.h"
+#include <math.h>
+
+DigitalOut gpo(D0);
+DigitalOut led(LED_RED);
+AnalogIn freq(A0);
+AnalogIn pwm(A1);
+Ticker ReadPotmetersTicker;
+volatile double frequency_Hz=1;
+volatile double pwm_pct = 50;
+volatile int on_time_us; // The time the LED should be on, in microseconds
+volatile int off_time_us;
+
+void ReadPotmeterValues(void)
+{
+ frequency_Hz = 1 + pow((double)freq.read(),4) * 50; // Frequency ranges from 1 to 50 Hz
+ pwm_pct = pwm.read() * 100;
+ on_time_us = (int) ((pwm_pct/100.0) * (1.0/frequency_Hz) * 1.0e6);
+ off_time_us = (int) (( (100.0-pwm_pct)/100.0) * (1.0/frequency_Hz) * 1.0e6);
+}
+
+int main()
+{
+ ReadPotmetersTicker.attach(ReadPotmeterValues, 0.1);
+
+ while (true)
+ {
+ led = 0; // Turn led on
+ wait_us(on_time_us);
+ led = 1; // Turn led on
+ wait_us(off_time_us);
+ }
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Fri Sep 20 07:46:16 2019 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/mbed_official/code/mbed/builds/d1b4690b3f8b \ No newline at end of file