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I posed the question to CCS Tech Support and they gave this simple answer:

32 bit switch/case arguments are not supported.

Ah well ... I did raise this as a bug, but I guess it's not a show-stop ...

With version 4.099, the following code brings up the error:-

Errormain()
{
int32 a;

a = 0x10000;
switch(a)
{
case 0x10000: break;
}
} ...

Just got a reply from CCS themselves.

PPS will be supported in 4v088.

Ah ... I should have stated that I'm using a PIC18F46J11, which isn't covered by PCD.

I'm currently using 4v087.

Several of the newer devices have the new PPS registers.

By the looks of things, there's no support for these new registers at the moment, so can anyone help me in working out how to specify the #u ...

I don't know if anyone is trying to do too much with V4.x yet
The +OB switch doesn't work with 3v249 either ... I thought I'd try the latest version.

Have you thought about a conversion program bi ...

nibu

Is it possible to post the listing file ?

I'm using 4v020, and wish to compile my code to a .bin file, not .hex !!

I use the ocmmand line as follows ...
ccsc +FH +DF +OBbin +STDOUT main.c
The code compiles without any problems, and gener ...

I reported this to support a week ago and was issued an identification number.
My original bug report has not yet been answered, and as you can see I reported it back in January this year Shocked

so ...

Are you sure the listing file matches what's actually programmed inot the PIC ? A couple of times, I've fooled myself by compiling code into one directory, and then loading the COFF file from another ...

but that is necessary for hardware reasons.
You could account for this in the state machine (e.g. adding a "CHARGING" state).

Any use of delays just ties up the CPU and stops it from handling any ...

I would generally *not* recommend using delay routines in code that is used quite often. A keyboard scanning routine would usually be called several times a second to make sure all keypresses a detec ...

How will the FM24C256 have enough memory for this application? It has only 256 kbit.. I think he picked the wrong chip.
As I stated at the start of the thread ...
You need 2 x 650 x 8 = 10,400 bytes ...

Should give you plenty of room for expansion.

Just note that the FM24C256 has *no* 3volt alternative, unlike the SPI version Confused

Almost certainly, yes.

Any PIC device containing an MSSP module can support either SPI or I2C.

The difference between SPI and I2C comes down to number of pins required to communicate, speed and ...