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  1. Re: Bootloader that can load using SPI or RS-232 without using a computer

    I meant there wouldn't be anyone physically at the device. The device has internet connectivity so the HEX files can be transferred that way.

    This would be a good kickstarter project. Any takers?
  2. Re: Bootloader that can load using SPI or RS-232 without using a computer

    A PicKit2 wouldn't work. If another IC had SPI, RS-232 or some other communication protocol that would work, could that IC load the HEX file onto the PIC without human intervention?
  3. Bootloader that can load using SPI or RS-232 without using a computer

    I searched the forums and found a little bit of information but nothing that fits exactly what I need. Is there a way to load a hex file into an 18F without the use of a computer using SPI or RS-232?...
  4. Replies
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    Re: Updating HPWM frequently, safe?

    Old thread but very relevant to my issue.

    Can I use HPWM10:

    1. On an 18F87J50?
    2. And have it glitch free?
    3. To make a pulse train that's 140mS long and have varying duty cycles within the...
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    4,938

    EUSART's - Which timers do they use?

    Referencing page 12 of the 18F87J50 data sheet, the diagram has arrows pointing from EUSART1 to Timer3 and EUSART2 to Timer4. Is that true? If not, which timers are they associated with?

    For now,...
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    5,890

    Re: DT-INTS and SSP1_INT

    I assume the registers are set correctly since the MSSP modules work correctly with GOSUB's. I can't figure this problem out. It's a stumper.
  7. Replies
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    5,890

    DT-INTS and SSP1_INT

    I'm able to use the following interrupts from DT-INTS:

    1. RX1_INT
    2. RX2_INT
    3. TX1_INT
    4. TX2_INT
    5. TMR1_INT
    6. TMR0_INT

    When I try to use SSP1_INT, the program hangs waiting for the...
  8. Replies
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    3,974

    Re: RCSTA1 issue?

    Overruns aren't really a problem, except when that condition locks up the device. More importantly, you pointed out something I never caught onto. So there is a [email protected]_CLOERR 1 define.
    I use...
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    3,974

    Re: RCSTA1 issue?

    That I didn't have in my program. Does it matter where the define goes? If I'm understanding the manual correctly, I shouldn't have to use this any longer? Also, didn't see it mentioned in the manual...
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    Re: RCSTA1 issue?

    Yup, I did that. Like I said, I'm pretty sure the remote processor is the issue, just trying to identify why it's happening and how to limit the failures.

    I receive with this:
    IF RCSTA1.1 = 1...
  11. Replies
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    3,974

    RCSTA1 issue?

    I'm using an 18F87J50 to communicate with another processor at 115K. Most of the time the communication works fine but sometimes it gets stuck and when it gets stuck it's stuck permanently. I'm...
  12. Replies
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    5,281

    Re: RS-232 confusion

    I'm a novice when it comes to the timers and interrupts. Seems like a good idea that's worth trying.

    Idles low.

    1ms on/1ms off

    100

    It's a 1 but it can vary. Before the packet is...
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    5,281

    Re: RS-232 confusion

    Richard has confirmed it's not RS-232.

    I can identify everything.

    I don't really need to convert the data into a "readable" format, all I need to do is accurately measure the on/off period in...
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    5,281

    Re: RS-232 confusion

    It is one wire communication. The voltage level is 18VDC. What you see in that picture the output from a RS-232 IC. I can identify the start/stop and know what each piece of data is. The problem is,...
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    5,281

    RS-232 confusion

    This may be a case of a dog chasing his own tail but I'm trying to figure out if what I'm looking at is an RS-232 signal. I've tried various baud rates and it seems to be something around 9600 as...
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    1,893

    Can't get SST25VF032B to work

    I'm using the same footprint as a FM25V10 and the SST25VF032B appears to have almost the exact same instructions as the FM25V10. The problem is, no matter what commands I try, reading or writing...
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    Hserin amount

    I've found some threads that confirm the problem I'm having but none that provide a resolution.

    Why doesn't this work:

    HSERIN 1, [STR DAT\800\"@"]

    But this does?

    HSERIN 1, [STR...
  18. Replies
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    3,111

    Re: ICD3 with PBP

    Thanks, I think this is what I was looking for. Seems complicated.
  19. Replies
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    Re: ICD3 with PBP

    I'm using an 18F87J50. What exactly do you mean when you say: Also, how do you see your PBP code in MPLABX?
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    ICD3 with PBP

    I have an ICD3 that's been collecting dust. Every time I attempt to use it, I try for a little while, get sidetracked with something else and don't go back to it for some time. Then the cycle...
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    Re: Wrapping code

    I know. That's what I've been doing but now it's becoming a problem because there are so many HSEROUT statements. A 2kB image takes up 17kB of code space. Is there a better way to send an image that...
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    6,638

    Re: Wrapping code

    What happens when you try to compile this code?


    HSEROUT...
  23. Replies
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    6,638

    Re: Wrapping code

    I have one.

    I can't code wrap when the characters extend past column 255 even though we're given 1024.
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    6,638

    Wrapping code

    If I have a line of code that's 150 characters long, is there a way to continue that code onto the next line so all of the code can be viewed on my screen without scrolling to the right?
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    Re: 18F87J50 as a webserver

    Will do. One additional question. Why don't you have this line of code:
    "HTTP/1.0 200 OK",13,"Content-Length: 800 ",13,13
    written like this:
    "<HTTP/1.0 200 OK",13,"Content-Length: 800>",13,13
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