PwmOut_HelloWorld Example for WIZwiki-W7500
Dependencies: mbed-src
Fork of PwmOut_HelloWorld by
Prerequisite
This example is for PWM test using digital I/O. To implement this function, you need a Platform board.
Below are what we used.
- WIZwiki-W7500 from WIZnet (Platform board)
Hardware Configuration
WIZwiki-W7500 Pin map
Software
Init GPIO
PwmOut led(LED1);
Set PWM
led.period(4.0f); // 4 second period led.write(0.50f); // 50% duty cycle, relative to period
Diff: main.cpp
- Revision:
- 1:5160ea45399b
- Parent:
- 0:50d2b9c62765
--- a/main.cpp Tue Feb 12 15:10:53 2013 +0000 +++ b/main.cpp Sun Sep 21 06:39:30 2014 +0000 @@ -1,12 +1,12 @@ #include "mbed.h" - + PwmOut led(LED1); - + int main() { - while(1) { - for(float p = 0.0f; p < 1.0f; p += 0.1f) { - led = p; - wait(0.1); - } - } + // specify period first + led.period(4.0f); // 4 second period + led.write(0.50f); // 50% duty cycle, relative to period + //led = 0.5f; // shorthand for led.write() + //led.pulsewidth(2); // alternative to led.write, set duty cycle time in seconds + while(1); } \ No newline at end of file