Search found 15 matches

Thank you,
so after the timer overflow, I get an interrupt, and instead of set my pin high, I just increment a variable by one. and have an if statement to say if (variable == xinterrupts) { set pin ...

somehow the answer from RKnapp is correct.

I comment out the disable interrupt inside the isr
and I get 100ms pulse. 1/10 of a second

I only need one single pulse (no repeat).
my crystal is ...

I have a timer0 interrupt as a clock.
the program works ok
I also would like to generate a long pulse (2 seconds) on port A bit3 at different interval of times.

so I use timer3 for this task.
I ...

I place IC on socket on the same board.

IC 18f452
I have two ICs identical part number and lot, identical program, download/programmed by one PICSTART Plus.

One IC starts up immediately.
The second one has about 11 to 12 seconds delay, ...

Thanks Neutone and Marcus,

Great idea

Have a good day

Ok, I am not sure about your answer.
I already use timer0 to generate a tickcount.

OK, do you suggest I use this tickcount to do my on/on=blink?

hum, may be it is easier now.

Can you expand ...

if there is an alarm
I need to turn the red LED constant On
afte 45 seconds then I need to make it blink 1/2 sec ON 1/2 sec oFF to get more attention from user.

my part is 18F452
Should I us ...

thank
I use
if (number >=10 && number <100) number = 99;

it helps me from making human typo error.

How do I write a switch case with a range?
switch (number) {
case 1: tax_1() ;
break;
case 2:
case 3:
case 4: tax_2()
break;
case 10: /* ...

Thank you Steve,
I appreciate your clarification especially the example, #if,

I need to do some more thinking to reduce one interrupt out of two interrupt-on-change.

Hi,
Assuming I have 3 momentary pushbutton on port B:7,6, and 5, but only focus on portB:7 here.
With the interrupt-on-change, for port B pin 7, on PIC18F452,
Assuming the pin is normally pull high ...

I use timer0 or RTCC as my main timer interrupt, I also use delay_ms() function.
Does delay_ms() also use the same timer0 to perform the delay?

What timer does the delay_ms()?
Do I have to care a ...

I have a 18F452, I wrote a simple program, compiled OK,
When I look at the assembly code,
the LAST line is a SLEEP command.
I did not put any SLEEP in my C code, why the CCS compiler adds SLEEP? ...

I bought my ccs compiler PCW for windows from digikey.
I have win2k,
I have two questions
Do I need to pay for an add-in to use the PCW for Microchip 18F542?
Q2: Everytime, I close the PCW window, ...