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#1
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LVP programmer
I'm trying to program a pic 16f628 - I've tried the LVP programmer
(http://home.vrweb.de/~lotharstolz/st...vpc/index.html) and can't seem to get it to work. The connections all look ok - and I've check with a scope that the programming pins at least do something when programming. But I keep getting a verified failed. I read the data back and its all zero's. Can anyone offer any help - where do I start? Is there another programmer I can build to program my pic? |
#2
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Have you applied power to the PIC???
schreef in bericht oups.com... I'm trying to program a pic 16f628 - I've tried the LVP programmer (http://home.vrweb.de/~lotharstolz/st...vpc/index.html) and can't seem to get it to work. The connections all look ok - and I've check with a scope that the programming pins at least do something when programming. But I keep getting a verified failed. I read the data back and its all zero's. Can anyone offer any help - where do I start? Is there another programmer I can build to program my pic? |
#3
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yip - 5V
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#4
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yip - 5V
try + 5V Wouter van Ooijen -- ------------------------------------ http://www.voti.nl Webshop for PICs and other electronics http://www.voti.nl/hvu Teacher electronics and informatics |
#5
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more serious:
- did you connect /MCLR and +5V? - if working on XP: did you select 'windows calls'? This is about the most simple programmer I have ever seen, and probably the most unreliable too. If your time is worth any money forget all serial-port bit-fiddeling programmers and go for a serious one, like: Wisp628 (mine), most kitsrus/DIY proggers, Warp-X, ICD2 or a clone, etc Wouter van Ooijen -- ------------------------------------ http://www.voti.nl Webshop for PICs and other electronics http://www.voti.nl/hvu Teacher electronics and informatics |
#6
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"Wouter van Ooijen (www.voti.nl)" schreef in bericht
... more serious: - did you connect /MCLR and +5V? - if working on XP: did you select 'windows calls'? This is about the most simple programmer I have ever seen, and probably the most unreliable too. If your time is worth any money forget all serial-port bit-fiddeling programmers and go for a serious one, like: Wisp628 (mine), most kitsrus/DIY proggers, Warp-X, ICD2 or a clone, etc Wouter van Ooijen -- ------------------------------------ http://www.voti.nl Webshop for PICs and other electronics http://www.voti.nl/hvu Teacher electronics and informatics @ Wouter Yes, thats a good idea. Does your programmer use a programmed PIC??? In a previous threat (where you also responded) he wanted to build the WISP but needed a way to programm the PIC. I suggested the LVP, this one has never failed me but I needed more possibilities. @ All Perhaps you could look at the pre-programmed pic also found on Wouters site (he also sells more stuff at a not too expensive price). |
#7
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Does your programmer use a programmed PIC???
Yes. That is the only way to make a reliable programmer. Reliable meaning: when someone builds it, it will work unless he made a mistake. Serial/parallel port pin wiggling programmers, and even more so the ones that depends on the voltages on these ports, are notorious for the trouble they cause to get working. Once they are working though they will probably work, untill you change PC and/or Windows versions. Wouter van Ooijen -- ------------------------------------ http://www.voti.nl Webshop for PICs and other electronics http://www.voti.nl/hvu Teacher electronics and informatics |
#8
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"Wouter van Ooijen (www.voti.nl)" schreef in bericht ... Does your programmer use a programmed PIC??? Yes. That is the only way to make a reliable programmer. Reliable meaning: when someone builds it, it will work unless he made a mistake. Serial/parallel port pin wiggling programmers, and even more so the ones that depends on the voltages on these ports, are notorious for the trouble they cause to get working. Once they are working though they will probably work, untill you change PC and/or Windows versions. Wouter van Ooijen -- ------------------------------------ http://www.voti.nl Webshop for PICs and other electronics http://www.voti.nl/hvu Teacher electronics and informatics I Brought this one up because of the previous threat. |
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