Liyang HU / Mbed 2 deprecated RedButton Featured

A big red pulsating emergency stop button: actually a USB keyboard in disguise.

Dependencies:   Pulsator USBDevice mbed Debouncer

https://igcdn-photos-f-a.akamaihd.net/hphotos-ak-xaf1/t51.2885-15/11208187_762945727138101_782976670_n.jpg

main.cpp@1:6d520aa1463b, 2015-04-27 (annotated)

Committer:
huliyang
Date:
Mon Apr 27 14:38:25 2015 +0000
Revision:
1:6d520aa1463b
Child:
2:617c7d2f754d
How do I interrupted pin? ?\(?_o)/?

Who changed what in which revision?

UserRevisionLine numberNew contents of line
huliyang 1:6d520aa1463b 1 #include <mbed.h>
huliyang 1:6d520aa1463b 2 #include <DigitalIn.h>
huliyang 1:6d520aa1463b 3 #include <Pulsator.h>
huliyang 1:6d520aa1463b 4 #include <USBKeyboard.h>
huliyang 1:6d520aa1463b 5
huliyang 1:6d520aa1463b 6 // ACTIVE LOW
huliyang 1:6d520aa1463b 7 #define PI_BUTTON P0_7
huliyang 1:6d520aa1463b 8 #define PO_LED P1_15
huliyang 1:6d520aa1463b 9
huliyang 1:6d520aa1463b 10 #define BUTT_KEY '1'
huliyang 1:6d520aa1463b 11 #define BUTT_DN KEY_CTRL | KEY_ALT
huliyang 1:6d520aa1463b 12 #define BUTT_UP KEY_CTRL | KEY_ALT | KEY_SHIFT
huliyang 1:6d520aa1463b 13
huliyang 1:6d520aa1463b 14 #define PERIOD_DN 0.25f
huliyang 1:6d520aa1463b 15 #define PERIOD_UP 2.0f
huliyang 1:6d520aa1463b 16
huliyang 1:6d520aa1463b 17 DigitalIn butt(PI_BUTTON, PullUp);
huliyang 1:6d520aa1463b 18 USBKeyboard kbd;
huliyang 1:6d520aa1463b 19 Pulsator led(PO_LED);
huliyang 1:6d520aa1463b 20
huliyang 1:6d520aa1463b 21 static float flashing(float x)
huliyang 1:6d520aa1463b 22 { return x < 0.125f || x >= 0.25f && x < 0.375f ? 1.0f : 0.0f; }
huliyang 1:6d520aa1463b 23
huliyang 1:6d520aa1463b 24 #define BRIEFLY 0.125f
huliyang 1:6d520aa1463b 25 int main(void)
huliyang 1:6d520aa1463b 26 {
huliyang 1:6d520aa1463b 27 led.active_high(false).fun(&flashing).period(PERIOD_UP) = true;
huliyang 1:6d520aa1463b 28 while(!kbd.configured()) wait(BRIEFLY);
huliyang 1:6d520aa1463b 29 led.fun(NULL);
huliyang 1:6d520aa1463b 30
huliyang 1:6d520aa1463b 31 for(bool now = butt; ; wait(BRIEFLY))
huliyang 1:6d520aa1463b 32 {
huliyang 1:6d520aa1463b 33 if(now == butt) continue;
huliyang 1:6d520aa1463b 34 now = !now;
huliyang 1:6d520aa1463b 35 kbd.keyCode(BUTT_KEY, now ? BUTT_UP : BUTT_DN);
huliyang 1:6d520aa1463b 36 led.period(now ? PERIOD_UP : PERIOD_DN);
huliyang 1:6d520aa1463b 37 }
huliyang 1:6d520aa1463b 38 }