PIC18F26J11 / CCS PCWH help

[starfire151]

I'm using PCWH V4.095 (just updated) and a PIC18F26J11 processor. I am a little confused with some of the new fuse definitions and a couple of the settings.

I've managed to get the second hardware serial port mapped and responding to the serial data receive interrupt correctly. The readme file explained how to use the #PIN_SELECT to set the functions.

1. Is there a summary list of the pin defintions used for the #PIN_SELECT directive? In other words "U2TX" is the second UART transmit pin and "U2RX" is the second UART receive pin. Is there a list of all the valid pins?

2. Is the summary set of fuse definitions defined anywhere? I see from the fuses listing in the compiler IDE that there is a number in front. I think this is the section in the datasheet defining this fuse but they don't quite map out to the same as what's listed. For instance, I see a #fuse H4_SW defined but is this the PLL selection?

3. According to the datasheet, the device should work up to 48MHz with the PLL. I'm trying to get the device to run with an external crystal of 9.216MHz and the PLL (* 4) for an operational speed of 36.864MHz. I tried the H4_SW fuse but the system was recognized as 9.216MHz, not 36.864MHz. Does the "SW" mean software switched? How do I enable that?

4. How would I select the internal 8MHz oscillator? Can this be used in conjunction with the * 4 PLL for an operational rate of 32MHz? How do I select these fuses?

5. In looking at the file for the 18F26J11, it appears there is an RTC internal to the device with a setup_rtc() function. Where is the definition of the RTC functions and parameters? Is this like an external RTC (like an I2C device like the Xicor X1226, the STI M41T81, the Maxim DS1338 or similar) where I could set the date/time and then get the updated date/time values later during program execution?

Thanks.

[PCM programmer]

[starfire151]

Thanks very much, PCM Programmer... You da Man!

[bkamen]

I'm (still) writing code for an 18F46J11 -- they're a blast.

It's so nice to have 2 UART's on a small (<64 pin) package.

The re-mappable pins are fabulous (once they work).

Enjoy your 26J11 project!

-Ben
_________________
Dazed and confused? I don't think so. Just "plain lost" will do. :D

[starfire151]

I agree! This is a great processor family. One of Microchips' best efforts that I've used. The second hardware com port (and associated recv data ISR) is very useful. I will use this feature often. The *4 PLL and operation up to 48MHz lets the code get through quicker, also.

I'm starting to play with the internal RTC feature of this family, which is kind of downplayed but a very nice feature. As most of my applications require an external RTC chip, this simplifies the hardware interface without having to lose functionality.

Please see the links posted in the response from PCM Programmer (above) for the PCD manual. This is very useful and explains many features not currently documented in the PCWH manual (setup_rtc(), etc).

I had been using the PIC18LF2620 but I've discovered a new favorite processor... the PIC18F26J11!

Enjoy this new family... it's great! Great job, Microchip!


Dave

[bkamen]

The RTC is very nice.

I used the PPS output from the GPS I get the time from and then did a little offset adjustment with INT0.

It's pretty fabulous...

I also used the IDLE modes which ends up drawing a lot less current while still running at full speed than when the core is doing something...

The chip is really quite versatile.
_________________
Dazed and confused? I don't think so. Just "plain lost" will do. :D

[Pulsartomi]

Hello All!
I didn't want to create a new topic for this.
I have problem with ccs 18f46j11.h, because it has defined pins only for 28-pin version.But i would like to use the 44-pin TQFP.
PORT D is not defined, nor PORT E (for example #define PIN_D0 is missing from header file).Can i define with the pin's address?What could it be?

Thank You

[bkamen]

You must be using an older version of PCH, I'm looking at 18F46j11.h and I show port D and E.

What version of PCWH are you using?

The current version is: 4.107
_________________
Dazed and confused? I don't think so. Just "plain lost" will do. :D

[Pulsartomi]

Sure, it's an older version.
Thank You

[dyeatman]

If you have a registered version you might ask CCS for an updated header
file. They should send it to you since that one is bad. The other option is to
copy the needed lines from another variant of the same version. Since I
am running the latest version of PCWH I can't look and see which ones you
might have.

Here are the port definition lines but there may be some other things missing as well:

[Pulsartomi]

Thank You very much.

Tomi

[rsappia]