NXP fan (in Japan)
very simple 4ch PWM output demo for "mbed LPC824"
Information
Program sample for https://twitter.com/nxpfan/status/545030103462203392
Revision 0:a7f40d4e5c58, committed 2014-12-17
- Comitter:
- nxpfan
- Date:
- Wed Dec 17 01:32:34 2014 +0000
- Commit message:
- 4ch PWM output 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 a7f40d4e5c58 main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed Dec 17 01:32:34 2014 +0000
@@ -0,0 +1,28 @@
+#include "mbed.h"
+
+#define PI 3.14159265
+
+PwmOut pwm[] = {
+ PwmOut( dp6 ),
+ PwmOut( dp7 ),
+ PwmOut( dp8 ),
+ PwmOut( dp9 ),
+};
+
+int main()
+{
+ int count = 0;
+ float t = PI / 40.0;
+
+ while(1) {
+ for ( int i = 0; i < 4; i++ ) {
+ pwm[ 0 ] = powf( sin( t * (float)(count + 0) ), 2.0 );
+ pwm[ 1 ] = powf( sin( t * (float)(count + 5) ), 2.0 );
+ pwm[ 2 ] = powf( sin( t * (float)(count + 10) ), 2.0 );
+ pwm[ 3 ] = powf( sin( t * (float)(count + 15) ), 2.0 );
+ }
+ wait_ms( 20 );
+ count++;
+ }
+}
+
diff -r 000000000000 -r a7f40d4e5c58 mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Wed Dec 17 01:32:34 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/4fc01daae5a5 \ No newline at end of file