NXP fan (in Japan) / Mbed 2 deprecated pwm_4ch_demo

very simple 4ch PWM output demo for "mbed LPC824"

Dependencies:   mbed

Information

Program sample for https://twitter.com/nxpfan/status/545030103462203392

main.cpp@0:a7f40d4e5c58, 2014-12-17 (annotated)

Committer:
nxpfan
Date:
Wed Dec 17 01:32:34 2014 +0000
Revision:
0:a7f40d4e5c58
4ch PWM output demo

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nxpfan 0:a7f40d4e5c58 1 #include "mbed.h"
nxpfan 0:a7f40d4e5c58 2
nxpfan 0:a7f40d4e5c58 3 #define PI 3.14159265
nxpfan 0:a7f40d4e5c58 4
nxpfan 0:a7f40d4e5c58 5 PwmOut pwm[] = {
nxpfan 0:a7f40d4e5c58 6 PwmOut( dp6 ),
nxpfan 0:a7f40d4e5c58 7 PwmOut( dp7 ),
nxpfan 0:a7f40d4e5c58 8 PwmOut( dp8 ),
nxpfan 0:a7f40d4e5c58 9 PwmOut( dp9 ),
nxpfan 0:a7f40d4e5c58 10 };
nxpfan 0:a7f40d4e5c58 11
nxpfan 0:a7f40d4e5c58 12 int main()
nxpfan 0:a7f40d4e5c58 13 {
nxpfan 0:a7f40d4e5c58 14 int count = 0;
nxpfan 0:a7f40d4e5c58 15 float t = PI / 40.0;
nxpfan 0:a7f40d4e5c58 16
nxpfan 0:a7f40d4e5c58 17 while(1) {
nxpfan 0:a7f40d4e5c58 18 for ( int i = 0; i < 4; i++ ) {
nxpfan 0:a7f40d4e5c58 19 pwm[ 0 ] = powf( sin( t * (float)(count + 0) ), 2.0 );
nxpfan 0:a7f40d4e5c58 20 pwm[ 1 ] = powf( sin( t * (float)(count + 5) ), 2.0 );
nxpfan 0:a7f40d4e5c58 21 pwm[ 2 ] = powf( sin( t * (float)(count + 10) ), 2.0 );
nxpfan 0:a7f40d4e5c58 22 pwm[ 3 ] = powf( sin( t * (float)(count + 15) ), 2.0 );
nxpfan 0:a7f40d4e5c58 23 }
nxpfan 0:a7f40d4e5c58 24 wait_ms( 20 );
nxpfan 0:a7f40d4e5c58 25 count++;
nxpfan 0:a7f40d4e5c58 26 }
nxpfan 0:a7f40d4e5c58 27 }
nxpfan 0:a7f40d4e5c58 28