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You mean just keep the integer part of it?

You can do:

unsigned char my_integer;
float my_float;
.
.
.
my_integer = (unsigned char) my_float;

Does your code actually compile without errors.

I don't think you can declare pointers to constants the way you did.

This:

setup_timer_2(T2_DIV_BY_16, 499, 1);

Timer2 is 8 bits. I don't know what happens if you set it to 499, but it certainly doesn't help.

#int_rb only detects change on RB4 to RB7. You are trying to detect a change on RB2 so it doesn't seem like that is the right interrupt. Your PIC does have separate IOC (interrupt-on-change) for all t ...

Looks like you are right.

This:

putc(0x01);

Does not output a readable ASCII character. Why don't you try something like putc('A') instead.

Where are you enabling the transmit and receive interrupts?

I am making a display with 32 leds and 12 7 segments that are driven from Port B and controlled by Port A with 4-16 decoders so the display is very time sensitive but I also have to receive data from ...

First thing, if the crystal load capacitance is specified as 12pF, you do _not_ want 12pF capacitors.....
The crystal 'sees' as it's load, the two external capacitors, in parallel with the PCB/leg ca ...

You are not using any of the CCS built-in functions. That makes your code very hard to debug without looking at the datasheets. Search this forum on how to write a simple test program using standard C ...

You do not need this actually:

#BYTE port_b = 0xF81

If you look at the file "18F4520.h" (I don't have that compiler installed on this PC) you should see something like:

#BYTE PORTB ...

Please post your working program.

That's not going to work.

You are going to need to change this:

int16 port_b = 0xF81;
to this:

#byte port_b = 0xF81

But why do you need to explicitly declare PORTB. The location is alre ...

I've never understood the 'make it smaller, no smaller, I mean really, really smaller' push. But that's another story.....

I just did a project whose management decreed I use a TI MSP430. That wa ...

Or you can just look at page 3 of the PIC 18F8722 datasheet to see where AN0, AN1, AN2 etc. are. You can't just randomly plug things into different ports and assume it would work.

I was using pins A2 (channel 2 - works) and I've tried C5, C4, C3, etc (corresponding to channels 3, 4, 5).

Maybe that is why it doesn't work. According to the 8722 datasheet AN3 is RA3, AN4 is R ...