RDA interrupt non-responsive

fvnktion · Joined: 27 Jun 2006 Posts: 39

I am in the middle trying to implement a serial interrupt using the #int_rda. It works fine in a test program, but when trying to port it into a project it does not respond. There seems to be some conflict with existing usage in the project.

I am using rs232 to output data, and have a I2C bus, which is active and am running and LCD. The only one that i can see being a problem at all would be the I2C as it uses some of the serial registers.

Are there any other problems that I may be running into? Is it possible to use I2C and the RDA interrupt simulaneously?

Here are the fuses that i currently have enabled:

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

Comment sections of code until it starts working. For example, if you
call a routine to read the temperature from an i2c chip, then comment
out the "guts" of that routine. Then temporarily insert code in that
routine to return a hard-coded value for the temperature. For example,
always return 70 degrees (Fahrenheit). Also, comment out the
#use i2c () statement and any code that initializes the i2c pins. If the
you suspect that the i2c is causing the problem, this trouble-shooting
will help you to see if it's true.

fvnktion · Joined: 27 Jun 2006 Posts: 39

Thanks for the great advice PCM. Just to update the post in case anyone else is interested.

I did what you recommended and did end up getting the the INT_RDA to by basically eliminating all use of the I2C. I thought that I would try and older version compiler to see if there was any difference in outcome. I loaded 4.057 and all of the code with all functionality enabled worked fine. I reloaded 4.083 and somehow someway all of the code was working fine.

Some crazy black magic going on there somewhere. Possibly a corrupted file or some other reinstall fixing solution.

Anyway, thanks for the help.

Cheers