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8 years, 2 months ago.
i am not able to understand the error in code.
#include "mbed.h"
#include "TextLCD.h"
TextLCD lcd(A0, A1, A2, A3, A4, A5);
DigitalIn pin_delay( D11); //...........i want to set delaytime by a button press
Timer delaytime;
//float delaytim;
int main()
{
int time = 0;
pin_delay.mode(PullDown);
lcd.cls();
lcd.locate(3,0);
lcd.printf("SET DELAY");
do{
delaytime.start();
time = delaytime.read();
lcd.cls();
lcd.locate(1,0);
lcd.printf("DELAY = %1.2f mn", delaytime.read()*10);
}while(pin_delay==1);
delaytime.stop();
return delaytime.read();
while (time > 0){
lcd.cls();
lcd.locate(1,0);
lcd.printf("DELAY = %1.2f mn", time*10);
wait(60);
time--;
}
delaytime.reset();
}
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1 Answer
8 years, 2 months ago.
The ''return delaytime.read();'' will probably end your main() and stop the whole program.
Im not sure what you try to do, but you probably want to set a timer value by pressing and holding the button and then start the timer to wait for the set delay time.
Something like this
while (true) {
time = 0;
// increment the delaytime in steps of 1 min while holding the button
do{
time++;
lcd.cls();
lcd.locate(1,0);
lcd.printf("SET = %d min", time);
wait(1);
} while(pin_delay == 1);
//wait for set delay time
while (time > 0){
lcd.cls();
lcd.locate(1,0);
lcd.printf("DELAY = %d min", time);
wait(60);
time--;
}
}
You can replace the while (time>0) loop by code that uses the mbed Timer instead of wait(). This could allow you to do some other work instead of just waiting.
Accepted Answer