deepmak
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Good day all,
im fairly new to micro controllers and their programming , i want to design a device that can consist of a main board connected to push button(s) (one or two in series ) , with 4 outputs for warning devices and it would be used to confirm an operator attendance in their room ,and it would operates like this :
the supervisor sets a certain period , basically 3 minutes ( or 6 or 12 ) , the operator should push the button at their desk once before the period elapse to confirm they are at their desk , should the delay pass , a visual warning will operate , pressing the button will reset the delay and the count start over
if say 15 second passed with no operator interaction , a sound warning start in the operator room , again pressing the button will reset the delay and start over.
if no interaction again , a second stage sound warning will sound at the supervisor room , having them to check the room and push the button to silent all warnings and start over
if no interaction still after the second stage alarm , a third stage sound warning will start after say 90 seconds at the staff room or other place where worker would be , and it will sound until the warning are silenced from the operator room.
i thought of attaching the push button as external interrupt to reset all warning and start the delay over , however all books or lectures i read about interrupt were mentioning that interrupt will resume the flow of the program after being served , meanwhile i need to reset the delay with every push/press.
sorry for being lengthy but is it ok for interrupts to change the flow of execution ? like having a "GOTO Start1 " statement to direct the control to the start of program ?
on the other hand , i thought of the following code with polling , could you please check it ?
Thanks in advance , i plan to add delay configuration later if this works
Edit : syntax corrected after coding in Mikroc IDE , sorry for errors (wrote code from work using notepad)
simulation works using PIC16F84A
Regards
im fairly new to micro controllers and their programming , i want to design a device that can consist of a main board connected to push button(s) (one or two in series ) , with 4 outputs for warning devices and it would be used to confirm an operator attendance in their room ,and it would operates like this :
the supervisor sets a certain period , basically 3 minutes ( or 6 or 12 ) , the operator should push the button at their desk once before the period elapse to confirm they are at their desk , should the delay pass , a visual warning will operate , pressing the button will reset the delay and the count start over
if say 15 second passed with no operator interaction , a sound warning start in the operator room , again pressing the button will reset the delay and start over.
if no interaction again , a second stage sound warning will sound at the supervisor room , having them to check the room and push the button to silent all warnings and start over
if no interaction still after the second stage alarm , a third stage sound warning will start after say 90 seconds at the staff room or other place where worker would be , and it will sound until the warning are silenced from the operator room.
i thought of attaching the push button as external interrupt to reset all warning and start the delay over , however all books or lectures i read about interrupt were mentioning that interrupt will resume the flow of the program after being served , meanwhile i need to reset the delay with every push/press.
sorry for being lengthy but is it ok for interrupts to change the flow of execution ? like having a "GOTO Start1 " statement to direct the control to the start of program ?
on the other hand , i thought of the following code with polling , could you please check it ?
Code C - [expand]
Thanks in advance , i plan to add delay configuration later if this works
Edit : syntax corrected after coding in Mikroc IDE , sorry for errors (wrote code from work using notepad)
simulation works using PIC16F84A
Regards
Last edited: