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Perfect!

SN74 Single FET Bus Switch....

Thanks for the help.

I've got a weird situation where I need to use a hardware UART and it is connected to an FTDI USB and a Bluetooth radio. In one situation I need to disable the TX line from the PIC to the Bluetooth ra ...

Excellent. All really nice things to know. I appreciate the time that you invested to share.

Looks like the hardware swap should be fairly simple. I should be able to just rip up the tracks at the ...

Thanks.

I guess I'll just have to dive in.

I have a prototype that I based upon the 18F6627 because I had experience with 18F parts and the compiler. The project collects analog samples from a microphone and performs some FFT math (using the G ...

I'm diving into RS485 for the first time and I've read many of the posts here on CCS and spent time Googling as well. I've come up with some questions that I haven't been able to answer and thought th ...

Worked like a champ. Thanks to everyone for the ideas and the help.

Thanks PCM for teaching me to fish.

Yes, it's TTL (PIC directly to PIC).

It idles high. I'm detecting the leading edge... but with the wrong interrupt setting as PCM has alluded to?

Looks like I should use this syntax:

ext_int_ ...

I was assuming there delay to get into the interrupt handler, but now that you mention it, it shouldn't be that long, right? Especially when I have slowed the baud to 1200 to see if I can find my prob ...

Have you tried the hardware UART of the 2nd unit ? If so with what results? If the hardware UART works 100%, gotta be a 'software' issue..

Just tried it. The hardware UART works fine.

I'll ...

I see that you are using EXT2 for soft serial interrupt

rcv=PINB6 is not EXT2

You should be using rcv=PINB2

Jerry,

Sorry, that was one of the things I had meant to add to one of my edi ...

What's your PIC oscillator frequency and your compiler verison ?

10mHz
3.249

If you were sampling 'late' in the 'AA' pattern, you'd receive the MSb set in the received byte, and get D5.

Do ...

I've used soft UARTs before and never run into this problem. Now that I'm seeing it, I'm wondering two things: how soft UARTs work and possible reasons mine isn't.

I've got 2 18F2620s tied together ...

At least in the v3 compilers the default was to write int16.

I just checked the manual. Yup, default is words. Thanks for that info, that would have eaten a good chunk of my life trying to find.

Thanks for the info. I had seen the getenv in another post and had assumed it was v4 unique. I'll look and see if it is v3 friendly and use it.

I just spent all morning trying to find an addressing ...