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Breathing lamp refers to the lights that complete gradual change from light to dark
under the control of a microcomputer or circuit , feeling like breathing.
It is Widely used in mobile phones and become one of the selling points of new phones
at each big brand .
If your phone has a pending notification, such as missed calls, unchecked message
s and so on,breathing lamp will change from dark to bright,the is just like breathing ,
and plays a role of notice to remind.
See here, you will find that this post is similar to the post before, but the program of
breathing lamp I posted before is on Arduino, and it could not be used on pcDuino
if move the original program directly to pcDuino , it need to do some modification.
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/*Notice: do not operate the pcDuino after the program is started, or the lamp may flash obvious.*/
#include"core.h"
#define SigPin 2
#define CYCLE 1500
void delay_us(int t)
{
usleep(t);
}
void delay_ms(int t)
{
while(--t){usleep(1000);}
}
void setup() {
// put your setup code here, to run once:
pinMode(SigPin,OUTPUT);
digitalWrite(SigPin,LOW);
}
void loop() {
int count;
// put your main code here, to run repeatedly:
digitalWrite(SigPin,LOW);
delay_ms(600);
for(count=1;count<CYCLE;count++)
{
digitalWrite(SigPin,HIGH);
delay_us(count);
digitalWrite(SigPin,LOW);
delay_us(CYCLE-count);
}
digitalWrite(SigPin,HIGH);
for(count=CYCLE-1;count>0;count--)
{
digitalWrite(SigPin,HIGH);
delay_us(count);
digitalWrite(SigPin,LOW);
delay_us(CYCLE-count);
}
delay_ms(600);
}
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