I know that. But look to top line of his pic code.
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I know that. But look to top line of his pic code.
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The top line says DEFINE OSC 48
Which seems correct from the image of the configs which shows an 8Mhz crystal with HS_PLL that gives 96Mhz.
The USBPLL is /2 so the USB gets 48Mhz, and the CPUDIV is also /2 so it's running at 48Mhz.
Except for the LVP, it all seems good.
Well, might want to disable XINST too.
<br>
DT
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thx for ur reply
i ll try to disable lvp and xinst and see what happen
brb
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OMG, it worked
thaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaank you Darrel for taking time to read the code and reply me. thank u very much
and thx pedja for trying to help.
Darrel, why LVP is so important in this case?
i thought LVP stands for low voltage programming. and since i used k128 usb programmer i thought lvp must be enabled ( i read once that k128 uses low voltage programming for usb compatible pics).
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Great News! And you're welcome.
I'm not familiar with the K128 ...
But with a quick look at the schematic in the datasheet, it seems to use a series of diodes and capacitors to increase the voltage and applies it to VPP.
They have several different programmers.
The LVP comment might have been directed at a different product.
But when LVP is enabled ... anytime RB5/PGM goes HIGH ... it's just like taking MCLR/VPP to 13V.
If it's left floating, the PIC could be constantly entering Program Mode from input noise.
<br>
DT
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well, thats something new to learn. thx DarrelOriginally Posted by Darrel Taylor
i m now trying to control a robtic arm using USB communication. i m reading about intruppts. i ll report my work in this thread.
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hi
i need to know more about interrupts. when using usb communication i have to excute usbservice every milisecond or so. should interrupts help me ?
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