Documentation:EVK1100/LEDs
From AVRFreaks Wiki
[edit] Description
The EVK1100 provides 6 LEDs to design Human to Machine Interface during softwares development.
Back to the Hardware Reference Page
[edit] Pinout
The pinout is as follow :
| LED | Color | GPIO Name | Alternate function used |
|---|---|---|---|
| 1 | Green | PB 27 | PWM_4 |
| 2 | Green | PB 28 | PWM_5 |
| 3 | Green | PB 29 | - |
| 4 | Green | PB 30 | - |
| 5 | Red/Green | PB 19/PB 20 | PWM_0/PWM_1 |
| 6 | Red/Green | PB 21/PB 22 | PWM_2/PWM_3 |
see below the hardware schematic for mono-color LEDs :
see below the hardware schematic for bi-color LEDs :
(The symbols of Led 5 and Led 6 are not good. Please refer to hardware known issues pages for more details).
Back to the Hardware Reference Page
[edit] Using the PWM channels
PWM channel are used to control LED5 and LED6. The software sequence is:
- Configuration of the two pins of LED5 and/or LED6 as PWM channel output
- Control of the duty cycle of the PWM channel to change the LED color. This is done by changing the red and green ratio.
Back to the Hardware Reference Page
