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    Olimex PIC-GSM - any experience?

    Hi,

    I'm about to start playing with some GSM code, and I found this:

    https://www.olimex.com/Products/PIC/Development/PIC-GSM/

    Now, I may be biting off more than I can chew here, since the...
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    Re: 18f4550 running slow?

    Well, that's poor form on my behalf, as I'm not sure!

    I was changing them in mplab, trying every combination [or so I though], but not keeping track, which is a 'random' approach to solving a...
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    Re: 18f4550 running slow?

    I stand corrected. MELabs did reply [thanks Darrel], and the mail somehow found its way into my spam folder?

    By way of an apology, sorry if it sounded like I was complaining. I most certainly was...
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    Re: 18f4550 running slow?

    No, the code runs much more slowly without changing anything at all, save swapping the connections to the 40-pin 4550, of course. Everything points to the DEFINE OSC directive.

    I've written a...
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    Re: 18f4550 running slow?

    Hi. Thanks for the reply.

    I found your post in a search on here, after I posted mine. I've tried every combination of fuse settings you can imagine[!], to no avail. If IESO is 0 then the code...
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    18f4550 running slow?

    Hi,

    I recently upgraded to the latest version of pbp3, and it came with mplab 8.85. I'm using these with an ICD2, and the latest versions at first seemed to be less 'buggy' [I used to get spurious...
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    18f4550 running slow?

    Hi,

    I recently upgraded to the latest version of pbp3, and it came with mplab 8.85. I'm using these with an ICD2, and the latest versions at first seemed to be less 'buggy' [I used to get spurious...
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    Re: button press AND hserout issues?!

    The whole code is above! It was just a few lines before things started going awry...

    For everybody's info (and thanking you all again for your input), I transferred over to a 18F4550, which is...
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    Re: button press AND hserout issues?!

    Thanks for taking time out to consider this, guys!

    I tried the code example, and no go. Funny thing is, Henrik, I wrote some inline assembly, which didn't work UNLESS I included a 'dummy' call to...
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    Re: button press AND hserout issues?!

    Did this:

    define OSC 20

    DEFINE HSER_TXSTA 24H
    DEFINE HSER_BAUD 31250

    main:

    CMCON = 7
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    Re: button press AND hserout issues?!

    The porta.0 was a typo in my message - the code was exact. This works, every time, and doesn't skip a beat:


    define OSC 20

    DEFINE HSER_TXSTA 24H
    DEFINE HSER_BAUD 31250

    main:
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    Re: button press AND hserout issues?!

    Yes, I didn't want to waste space by showing my initialisation code, but:

    CMCON = 7

    and to isolate the one switch for testing:

    TRISA = %00000010
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    button press AND hserout issues?!

    So... I dug out my ICD2 and selection of pics, to build myself a MIDI foot controller. Not having played with MIDI before, I set up a 16f628a, and tried the following:

    DEFINE HSER_TXSTA 24H...
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    Hey, thanks for the encouraging words! I FEEL...

    Hey, thanks for the encouraging words!

    I FEEL lazy but, when I'm up at 4am for the n_th night in a row, I guess I'm either doing SOME work, or I'm obsessed ! [probably a bit of both].

    Like your...
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    Ok, here's what I have learned [it's by no means...

    Ok, here's what I have learned [it's by no means authoritative but it works]...

    I haven't drawn a circuit diagram yet, as it's still on the breadboard.

    The 18F2550 has a 20mhz oscillator. The...
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    Better Documentation?

    Hi,

    I've been having a few problems with implementing USB on a 18F2550 and, judging by the zero replies to my previous posts, it seems that I'm not alone.

    Could this be down to the sparse...
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    18f2550 'access is denied' USB error?

    Hi,

    After MUCH browsing, and scouring of documentation regarding USB on a 18F2550 and attempting to use EASYHID to communicate, I have finally found a tool that scans for the vendorID and...
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    EasyHid and 18F2550 - why? what? how?

    Hi,

    I have a 18F2550 talking to windows with no apparent problems [see attached screendump].

    Easyhid generated the code, and I made what I believed to be the relevant changes [minor ones at...
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    Sir, you are a star! It works, and I thank...

    Sir, you are a star!

    It works, and I thank you!

    Giulio
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    ICD2 18F2550 MPASM7.50 - Aargh!

    Greetings...

    I finally bit the bullet and upgraded from a Picstart Plus to an ICD2. Had to upgrade MPASM as well, because I want to program a 18F2550.

    It's all gone horribly wrong... What used...
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    Aha! Good tip. Wasn't aware of the PBP defaults....

    Aha! Good tip. Wasn't aware of the PBP defaults. Will try. Thanks for the reply!

    Giulio
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    PBP and assembler mixing - weird goings-on?

    Hi,

    I've been dabbling with mixing some asssembler with PBP and can't understand why the following is happening... Consider this code:

    ;-------------------------------
    VAR BYTE loop

    main: ...
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    Thanks again for the tips. Time to bend the...

    Thanks again for the tips.

    Time to bend the credit card, methinks...


    Giulio
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    Thanks for the reply. I have a little test...

    Thanks for the reply.

    I have a little test setup on breadboard with a MAX233 talking to a 16f628 so that I can use the Microcode Studio ICD, which works a treat.

    The 16f628 doesn't support a...
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    Aargh! picstart plus and 18f2550

    Anybody having the same problem?

    I've just upgraded my picstart plus and downloaded the 4.3 firmware, which is apparently the current version.

    How comes the 18f2550 is not supported, even...
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