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wwwglro
Joined: 03 Sep 2009
Posts: 17
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| pic 16f84A software problems |
 Posted: Thu Sep 03, 2009 8:29 am |
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Hello
I have a program that does this: I have 2 buttons and 2 LEDs.
When I push the first button, first LED lights for 5 seconds. If I push the second button, first LED stops lighting and the second LED starts lighting for 5 seconds.
My problem is: when the button is kept pushed for more then 0,3 seconds, I want that the LED to light until the button is released. (not 5 seconds).
Here is the program. (It does the first part I described above: first LED lights for 5 seconds and if a button is pressed, it stops lighting first led and starts lighting the second one).
Thank you.
| Code: | #include <16f84A.h>
#use delay(clock=4000000)
long bec0=1;
long bec1=1;
#int_rtcc
void clock_isr() {
bec0--;
bec1--;
if(bec0<1) bec0=1;
if(bec1<1) bec1=1;
if(bec0>1)
output_high(pin_b0);
else
output_low(pin_b0);
if(bec1>1)
output_high(pin_b1);
else
output_low(pin_b1);
}
void main()
{
set_rtcc(0);
setup_counters (RTCC_INTERNAL, RTCC_DIV_1);
enable_interrupts (INT_RTCC);
enable_interrupts(GLOBAL);
do {
if(input_state(PIN_a0)==0)
{
bec0=19530; //3906*5 seconds
bec1=1;
}
if(input_state(PIN_a1)==0)
{
bec1=19530; //3906*5 seconds
bec0=1;
}
} while(1);
} |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Thu Sep 03, 2009 1:18 pm |
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You could look at Mark's multi-event switch driver:
http://www.ccsinfo.com/forum/viewtopic.php?t=36222
It will detect a simple button press, or if the button is held down.
With this driver, you can tell the difference between the two types
of button presses. Then you can turn on the LED for different amounts
of time, based on the type of button press. |
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wwwglro
Joined: 03 Sep 2009
Posts: 17
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| Posted: Thu Sep 03, 2009 10:16 pm |
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| Thank you very much. |
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