INT_rda disable Interrupts???

[lerastas]

Hello everybody, I have a problem.

I want disable interrupts before make a delay.

I have test some way but not good.

If anyone have any idea???

I have tested:

disable_interrupts(INT_RDA);
delay_ms(500);
enable_interrupts(INT_RDA);

disable_interrupt(GLOBAL);
disable_interrupts(INT_RDA);
delay_ms(500);
enable_interrupt(INT_RDA);
enable_interrupt(GLOBAL);

Please help me I don't know why the interrupts stop?

Thanks

[rnielsen]

If you are going to be receiving data via RS232 it will be a very BAD idea to disable the RDA interrupt to do a 500ms delay. You could miss a boat load of data by doing this. I really hate using the delay function unless it's very short. The best way to do a delay is to use one of the timers to count up(or down) and then set a bit that will initiate whatever you wanted to be delayed. Try experimenting with the different timers. There are both 8-bit and 16-bit timers. I use them both quite a bit.

Ronald

[lerastas]

Yes I have already receive data via the RS232 but i don't want that the delay make not 500ms.

I want disable any interrupts for that my delay is the time specified.

If anyone have another suggestion???

Thanks you for the help

Lerastas

[Ttelmah]

There are two 'parts' to this. You only need to use
'disable_interrupts(GLOBAL);' to actually turn the interrupts off. That having been done, the problem is restarting the interrupts. The INT_RDA interrupt, has the behaviour, that if the data is not retrieved, a second character arrives, and it too is not retrieved, the UART, will go into an 'error' state, and hang. In your 500mSec delay, this is happening.
The 'solution', is to code as follows:
First, add 'errors' to your #use RS232 declaration line. This makes the compiler add code to clear the hang, if it has occured, when you use 'getc'.
Then code the delay as follows:

[stevie_jay]

Your solution worked for me, I had the same problem with my UART, trying to enable interrupt half way through a transmission!!!

Thanks