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mierdogan
Joined: 22 Mar 2011
Posts: 7
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| Double Control with two different timer but how? |
 Posted: Fri Apr 01, 2011 3:24 am |
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Hi!
I'm newbie on PIC programming.
I want to prepare little project as below.
I want to control two different leds with two button with a two different timer (timer0 and timer1) but How can i do this i don't know?? Can somebody give to me little examples for about this?
Thank you! |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Fri Apr 01, 2011 1:21 pm |
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I'll tell you how to do it.
Use the button command program here:
http://www.ccsinfo.com/forum/viewtopic.php?t=23837
Instead of calling printf() as shown in that program, you can setup
a timer and turn it on. Use CCS functions to do this, as described
in the CCS manual. Also, turn on the LED. And then, enable interrupts
for the Timer, including Global interrupts.
After some time passes, the timer will count up and "roll over" to 0.
It will generate an interrupt and execute the interrupt service routine
code. You need to create this interrupt routine in your program.
(You need separate routines for Timer0 and Timer1). Then, inside the
interrupt routine, you need to disable the interrupt for the Timer and
turn off the LED.
I don't want to write this program for you. I also don't want to teach you
the C lanuage. You need to learn C outside of this forum. And you
need to write the program by yourself. We can help you to debug it, but
you must learn C and do most of the work. |
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mierdogan
Joined: 22 Mar 2011
Posts: 7
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| Posted: Fri Apr 01, 2011 2:44 pm |
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| PCM programmer wrote: | I'll tell you how to do it.
Use the button command program here:
http://www.ccsinfo.com/forum/viewtopic.php?t=23837
Instead of calling printf() as shown in that program, you can setup
a timer and turn it on. Use CCS functions to do this, as described
in the CCS manual. Also, turn on the LED. And then, enable interrupts
for the Timer, including Global interrupts.
After some time passes, the timer will count up and "roll over" to 0.
It will generate an interrupt and execute the interrupt service routine
code. You need to create this interrupt routine in your program.
(You need separate routines for Timer0 and Timer1). Then, inside the
interrupt routine, you need to disable the interrupt for the Timer and
turn off the LED.
I don't want to write this program for you. I also don't want to teach you
the C lanuage. You need to learn C outside of this forum. And you
need to write the program by yourself. We can help you to debug it, but
you must learn C and do most of the work. |
Thank you for your advice...
Best Regards |
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mierdogan
Joined: 22 Mar 2011
Posts: 7
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| Posted: Wed Apr 06, 2011 3:04 pm |
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| PCM programmer wrote: | I'll tell you how to do it.
Use the button command program here:
http://www.ccsinfo.com/forum/viewtopic.php?t=23837
Instead of calling printf() as shown in that program, you can setup
a timer and turn it on. Use CCS functions to do this, as described
in the CCS manual. Also, turn on the LED. And then, enable interrupts
for the Timer, including Global interrupts.
After some time passes, the timer will count up and "roll over" to 0.
It will generate an interrupt and execute the interrupt service routine
code. You need to create this interrupt routine in your program.
(You need separate routines for Timer0 and Timer1). Then, inside the
interrupt routine, you need to disable the interrupt for the Timer and
turn off the LED.
I don't want to write this program for you. I also don't want to teach you
the C lanuage. You need to learn C outside of this forum. And you
need to write the program by yourself. We can help you to debug it, but
you must learn C and do most of the work. |
Hi!!,
You can find my new code below,
When i was try compile this code, ccs c compiler gives to me error code for two lines as below
Error 49 ""timer.c"Line 46(15,16): Expecting LVALUE such as a variable name or * expression
Error 49 ""timer.c"Line 55(15,16): Expecting LVALUE such as a variable name or * expression
| Code: | #include <16F877.h>
#fuses HS,NOWDT,PUT,PROTECT,NOLVP
#fuses NODEBUG,NOBROWNOUT,NOWRT,NOCPD
#use delay(clock=20000000)
#define BUTON1 PIN_B0
#define BUTON2 PIN_B1
#define LED1 PIN_B2
#define LED2 PIN_B3
int counter;
boolean Led1Enable, Led2Enable;
#int_timer0
void timer0isr()
{
if(++Counter >= 25)
{
Counter = 0;
if(Led1Enable)
output_toggle(LED1);
if(Led2Enable)
output_toggle(LED2);
}
}
void main(void)
{
Led1Enable = FALSE;
Led1Enable = FALSE;
setup_timer_0(RTCC_INTERNAL|RTCC_DIV_256);
enable_interrupts(INT_TIMER0);
enable_interrupts(GLOBAL);
while(TRUE)
{
if (!input(BUTON1))
{
Led1Enable = TRUE;
Led2Enable = FALSE;
LED2 = 0;
while(!input(BUTON1))
;
}
if (!input(BUTON2))
{
Led1Enable = FALSE;
Led2Enable = TRUE;
LED1 = 0;
while(!input(BUTON2))
;
}
}
} |
Could you check this please?
Than you so much
Best Wishes |
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dyeatman
Joined: 06 Sep 2003
Posts: 1933
Location: Norman, OK
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| Posted: Wed Apr 06, 2011 3:38 pm |
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in place of this:
Use this:
_________________
Google and Forum Search are some of your best tools!!!! |
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