PwmOut Hello World
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Note
Set the cycle time first, then set the duty cycle using either a relative time period via the write() function or an absolute time period using the pulsewidth() function.
main.cpp@3:10bf740dc758, 2017-06-23 (annotated)
- Committer:
- sarahmarshy
- Date:
- Fri Jun 23 17:59:41 2017 -0500
- Revision:
- 3:10bf740dc758
- Parent:
- 1:5160ea45399b
"Update mbed-os"
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 0:50d2b9c62765 | 1 | #include "mbed.h" |
mbedAustin | 1:5160ea45399b | 2 | |
mbed_official | 0:50d2b9c62765 | 3 | PwmOut led(LED1); |
mbedAustin | 1:5160ea45399b | 4 | |
mbed_official | 0:50d2b9c62765 | 5 | int main() { |
mbedAustin | 1:5160ea45399b | 6 | // specify period first |
mbedAustin | 1:5160ea45399b | 7 | led.period(4.0f); // 4 second period |
mbedAustin | 1:5160ea45399b | 8 | led.write(0.50f); // 50% duty cycle, relative to period |
mbedAustin | 1:5160ea45399b | 9 | //led = 0.5f; // shorthand for led.write() |
mbedAustin | 1:5160ea45399b | 10 | //led.pulsewidth(2); // alternative to led.write, set duty cycle time in seconds |
mbedAustin | 1:5160ea45399b | 11 | while(1); |
mbed_official | 0:50d2b9c62765 | 12 | } |