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sjharris: Your code isn't wrong, you're just misunderstanding what the functions do: The encrypt and decrypt functions modify the contents of 'testdata' - try running this fragment and you'll see w ...

Thanks for your post PCM programmer, but it turns out my problem was an as-yet-unidentified hardware fault in that particular board I was developing my driver code on. I happened to switch to another ...

I have a project using a CYWUSB6935 and a PIC18F2525, but it seems the radio chip isn't paying attention to data being sent on the MOSI line:

All attempts to read a register return the value 0x07, ...

Just a hunch-

There isn't a problem with the amount of RAM to store the array in, but looks like it's to do with how you're addressing it:
in CCS, an int = int8 = 8 bits, with a maximum of 256
th ...

This particular implementation has been designed to hopefully aviod such problems. By that I mean that it reads in the entire 512 byte block to to a RAM buffer, and fgetch() simply decides whether or ...

Well, your suggestion worked PCM Programmer, but I don't understand why a delay (of any length) would alter matters here (though it clearly does). I'm not waiting for I/O and I'm not causing any side ...

Nothing new about the subject, to be fair, but this one isn't to do with mis-printing of floating point numbers or the like.

I have a piece of code which only works when the printf() statements are ...

Well, yes and no.

fclose() calls other functions, one of which is delay_ms(). So any time delay_ms() is called (like during the 200ms delay in the main loop) , interrupts are disabled.

Any othe ...

Nice idea, but i have a statement
delay_ms(200);
which rather prohibits that - checking for a set bit every 200ms just isn't fast enough when power is going down.

I know i could call th ...

I'm currently writing a program which has a loop which takes a temperature reading, does a delay_ms(200), writes out to a MMC, and continutes looping.

Since MMCs need to be written to in 512 byte ...

PCM, you never cease to amaze me.

Thanks a million.
-JBM

1) This is not the correct forum for code queries. That would be the general discussion forum.

2) If you have a recent version of PCH, just look in the drivers folder of your install for mmc_spi.c ...

I'm trying to use the PIC16F88's internal comparator, but so far, no joy.
Here's my code:

#include <16F88.h>
#fuses INTRC_IO, NOWDT, NOPROTECT, BROWNOUT, PUT, NOLVP
#use delay(clock=8 ...

I've had a little bit of experience with the the 18F67J10, the little brother (same series though) as the 18F87J10.

One thing to be VERY careful about is the ENVREG pin - this denotes whether you w ...

Below is my driver for the MAX6675, a chip which interfaces to a K-type thermocouple over a simple SPI bus.

The driver implements a software SPI port, so there is no need for dedicateed hardware- a ...