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PMP 16 problem & Explorer 16 + Pic32 PIM + Graphics V3 (SSD1926)

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andyhewitson
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2009/04/26 17:26:08 (permalink)
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PMP 16 problem & Explorer 16 + Pic32 PIM + Graphics V3 (SSD1926)

I have an environment consisting of: AC162127-3 (the two board graphic combo with the SSD1926) + Explorer 16 + MA320002 + MPLAB 8.3, C32 1.05 and V1.65 graphics library + ICD2.

I have this working with the 8bit wide PMP interface.  However, selecting the 16-bit wide option does not work for me - nothing appears on the LCD. I tested this by moving the jumper on the daughter board and uncommenting "#define USE_16BIT_PMP".  I've checked connectors, etc.  Before I commit to a whole lot of debugging on a platform that is new to me, can anyone confirm that 16bit wide PMP actually works (with the above setup)?

Even under 8bit PMP, I can't get past the touchscreen calibration because the Y touch output never returns a value low enough to be regarded as a touch event. X-coordinate does return sane values however. ie: Code loops forever at TouchScreen.c line 583.  I have seen on other post with this problem, but a different software stack and no resolution.  Same question again: does anyone actually have this working?


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    billysdomain
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    RE: PMP 16 problem & Explorer 16 + Pic32 PIM + Graphics V3 (SSD1926) 2009/04/27 11:57:40 (permalink)
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    Hi,

    Yes i have.

    I have a Explorer 16 + the two board combo + SD Card + Ethernet Pictail

    I Ficked the jumper, cleared RD0, RD1, RF0, RF1, RD6, RD7, RD12 and RD13 from any connections (Actually RD6, RD7, RD12 and RD13 are the 4 buttons on the explorer, but it works leaving these connected) uncommented the define, and it runs fine.

    The touchscreen works too, but i think the ratio's are off a bit, im looking into that
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    andyhewitson
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    RE: PMP 16 problem & Explorer 16 + Pic32 PIM + Graphics V3 (SSD1926) 2009/04/27 13:30:15 (permalink)
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    Thank you for the prompt response.  Dammit it means that I need to debug the thing.  You're using the PIC32MX460F512L PIM?

    I Ficked the jumper, cleared RD0, RD1, RF0, RF1, RD6, RD7, RD12 and RD13 from any connections (Actually RD6, RD7, RD12 and RD13 are the 4 buttons on the explorer, but it works leaving these connected)

    So for an explorer 16 / graphics setup with no other plug-in boards, this means do nothing?

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    billysdomain
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    RE: PMP 16 problem & Explorer 16 + Pic32 PIM + Graphics V3 (SSD1926) 2009/04/28 00:13:10 (permalink)
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    Thank you for the prompt response.  Dammit it means that I need to debug the thing.  You're using the PIC32MX460F512L PIM?


    No, sorry, im using the 32MX360F512

    So for an explorer 16 / graphics setup with no other plug-in boards, this means do nothing?


    I believe so, however, RG0 and RG1 may have something to do with the USB?

    Other things i do to my explorer boards are lose the U6 IC and link it out (allows for higher SPI speeds), and lose the U5 EEPROM, remove the jumper for the FLASH CS JP3 on the graphics pictail (which uses RD1 i believe by default) and dont use the FLASH IC in code!

    If you want to remove and link out U6 then link:
    Pin 1 to Pin 15
    blob solder between Pins 3 and 4
    blob solder between Pins 13 and 14

    Billy
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