Post by thread:pic programmer circuit

>I have been attempting to use the el cheapo >programmer on a 16f627 with >no success at all. Does anyne have a circuit for >reliable programming >and a straight forward program for it. Which version of the El Cheapo circuit are you using - the "book" version or the "homebuilt" version? Which software version are you using - Windows 0.84? Have you gotten it to work for any other chips (e.g. 16F84)? I can program a 16F84, 16F84A, and 16F627 (only chips I've tried with it) successfully on the "homebuilt" circuit using the Windows 0.84 software. __________________________________________________ Do you Yahoo!? Yahoo! Web Hosting - establish your business online http://webhosting.yahoo.com -- http://www.piclist.com hint: To leave the PICList .....piclist-unsubscribe-requestKILLspam@spam@mitvma.mit.edu>

> I have been attempting to use the el cheapo programmer on a > 16f627 with no success at all. Does anyne have a circuit for > reliable programming and a straight forward program for it. http://www.voti.nl/wisp628 but you will need a programmed 16f628. but if you can get your cheapo to work just once.... Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: http://www.voti.nl consultancy, development, PICmicro products -- http://www.piclist.com hint: To leave the PICList piclist-unsubscribe-requestKILLspammitvma.mit.edu>

It is the only pic I have. First time using the HOMEBUILT circuit. I have version 0.81 >I have been attempting to use the el cheapo >programmer on a 16f627 with >no success at all. Does anyne have a circuit for >reliable programming >and a straight forward program for it. Which version of the El Cheapo circuit are you using - the "book" version or the "homebuilt" version? Which software version are you using - Windows 0.84? Have you gotten it to work for any other chips (e.g. 16F84)? I can program a 16F84, 16F84A, and 16F627 (only chips I've tried with it) successfully on the "homebuilt" circuit using the Windows 0.84 software. __________________________________________________ Do you Yahoo!? Yahoo! Web Hosting - establish your business online http://webhosting.yahoo.com -- http://www.piclist.com hint: To leave the PICList .....piclist-unsubscribe-requestKILLspam.....mitvma.mit.edu -- http://www.piclist.com hint: To leave the PICList EraseMEpiclist-unsubscribe-requestspam_OUTTakeThisOuTmitvma.mit.edu>

This is for the book version. Is RB4 grounded in your programmer? -Clayton -----Original Message----- From: pic microcontroller discussion list [PICLISTspam_OUTMITVMA.MIT.EDU]On Behalf Of Clayton Mellina Sent: Wednesday, March 12, 2003 10:03 AM To: @spam@PICLISTKILLspamMITVMA.MIT.EDU Subject: Re: pic programmer circuit I am in the process of building an El Cheapo programmer as well. The PIC16F62x devices need to have RB4 pulled low to initialize the programming mode. The solution is simply a matter of connecting RB4 to ground when programming 16F62x's. I use IC-PROG for software. Good luck. -Clayton -----Original Message----- From: pic microcontroller discussion list [KILLspamPICLISTKILLspamMITVMA.MIT.EDU]On Behalf Of TONY PADGETT Sent: Wednesday, March 12, 2003 9:19 AM To: RemoveMEPICLISTTakeThisOuTMITVMA.MIT.EDU Subject: pic programmer circuit I have been attempting to use the el cheapo programmer on a 16f627 with no success at all. Does anyne have a circuit for reliable programming and a straight forward program for it. -- http://www.piclist.com hint: To leave the PICList spamBeGonepiclist-unsubscribe-requestspamBeGonemitvma.mit.edu -- http://www.piclist.com hint: To leave the PICList TakeThisOuTpiclist-unsubscribe-requestEraseMEspam_OUTmitvma.mit.edu -- http://www.piclist.com hint: To leave the PICList RemoveMEpiclist-unsubscribe-requestTakeThisOuTmitvma.mit.edu>

>I am in the process of building an El Cheapo >programmer as well. The PIC16F62x devices need to >have RB4 pulled low to initialize the programming >mode. The solution is simply a matter of connecting >RB4 to ground when programming 16F62x's. I use IC->PROG for software. The El Cheapo circuits (book or homebuilt) don't ground RB4, and I didn't modify mine to do so. I guess I am just lucky that it is able to program the 16F627 without problems. __________________________________________________ Do you Yahoo!? Yahoo! Web Hosting - establish your business online http://webhosting.yahoo.com -- http://www.piclist.com hint: To leave the PICList piclist-unsubscribe-requestEraseME.....mitvma.mit.edu>

I discussed this at length with Microchip tech support last summer... After reading the info in the datasheet, the errata on this issue, and also their replies to my questions, I decided that keeping RB4 low every time I program a 16F62x would be a good thing to do. If LVP is already disabled, and you don't erase before programming, it supposedly isn't necessary to hold RB4 low, but I came away with the impression that there may be some "issues" and keeping RB4 low every time would be wise. Some would call it a "belt and suspenders" approach, but I haven't had any problems with it since then... Randy ----- Original Message ----- From: "Clayton Mellina" <EraseMEcmellinaFLASH.NET> To: <RemoveMEPICLISTEraseMEEraseMEMITVMA.MIT.EDU> Sent: Wednesday, March 12, 2003 11:10 AM Subject: Re: pic programmer circuit > Now that I look at the programming specs a little closer, I think that you > only have to hold RB4 low if LVP is enabled and you are trying to program > with HVP. Holding RB4 low stops the chip from inadvertently going into LVP > mode. LVP is enabled when the chip is shipped so you want to hold RB4 low > the first time especially. Maybe you were lucky and the chip did not > "think" about going into LVP mode. I'm not quite sure about this. > > -Clayton > > {Original Message removed}

On Wed, Mar 12, 2003 at 10:19:17AM -0500, TONY PADGETT wrote: > I have been attempting to use the el cheapo programmer on a 16f627 with no > success at all. Does anyne have a circuit for reliable programming and a > straight forward program for it. Many have had success with my TLVP programmer: http://www.finitesite.com/d3jsys And for truth in advertising, some have had problems. Be sure to read the messages in the forum for common issues. BAJ -- http://www.piclist.com hint: To leave the PICList RemoveMEpiclist-unsubscribe-requestspam_OUTKILLspammitvma.mit.edu>

> I like the design of the wisp628 because it puts the timing > close to the target chip, and provides an easy-to-use serial interface > for the PC. But, I'm not excited about having to load Python > etc. to get the software working on Windows XP Pro. Have you ever > thought of collaborating with the folks at IC-Prog to take > advantage of the great UI that they have? There are at least two alternative user interfaces: home.hccnet.nl/d.a.kuipers/pic/bumblebee/introduction.html http://www.robh.nl/PICSOFT.HTM#XWisp2 and IIRC at least one of the Jal IDE's (Jalcc?) has build-in wisp628 support. I contact Bonny Gijzen (IC-prog) some time ago, but he (she?) was not interested in interfacing at a 'message' level. IC-prog is based on controlling the line s to the target chip directly, so it would require a major redesign. Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: http://www.voti.nl consultancy, development, PICmicro products -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

I just downloaded and tried Bumblebee with Wisp628 - not too impressed. It does not support 115200 baud as XWISP/Wisp628 do, thus it is much slower. It does not appear to have a CHECK function to verify that loading was correct. It has a couple of nice features - you can load (and read) just code, just data, just fuses; when you read from the chip, it gives you a hex display of what it read. It's terminology is not what I expected - the author used "download" and "upload" - it was not obvious to me which way "download" was - I assumed (incorrectly!) that it meant "download my hex file to the target chip". Nope - that's "upload". Biggest problem I see with any such program is keeping it up to date with what Wouter is doing. Installing Python was a no brainer - I too was leery of "Oh my God - another package to install!", but it installs easily and runs well. I could not get CodeDesigner Lite (as supplies with Picbasic Pro) to use XWISP to program a chip, but upon switching to Microcode Studio, it was easy to tell it to use XWISP. Go for it - you will be quite pleased with XWISP/Wisp628 - if only Wouter would stop writing code and produce come documentation (hint, hint!). Wouter is quick to respond to problems - he fixed two for me very quickly. Larry At 07:57 PM 3/13/2003 +0100, you wrote: {Quote hidden}> > I like the design of the wisp628 because it puts the timing > > close to the target chip, and provides an easy-to-use serial interface > > for the PC. But, I'm not excited about having to load Python > > etc. to get the software working on Windows XP Pro. Have you ever > > thought of collaborating with the folks at IC-Prog to take > > advantage of the great UI that they have? > >There are at least two alternative user interfaces: >home.hccnet.nl/d.a.kuipers/pic/bumblebee/introduction.html >http://www.robh.nl/PICSOFT.HTM#XWisp2 >and IIRC at least one of the Jal IDE's (Jalcc?) has build-in wisp628 >support. > >I contact Bonny Gijzen (IC-prog) some time ago, but he (she?) was not >interested in interfacing at a 'message' level. IC-prog is based on >controlling the line s to the target chip directly, so it would require >a major redesign. > >Wouter van Ooijen > >-- ------------------------------------------- >Van Ooijen Technische Informatica: http://www.voti.nl >consultancy, development, PICmicro products > >-- >http://www.piclist.com hint: PICList Posts must start with ONE topic: >[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads Larry Bradley Orleans (Ottawa), Ontario, CANADA -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

> It does not appear to have a CHECK function to verify that loading was It might not be apparent but the xwisp 'go' command also reads the chip and compares > It has a couple of nice features - you can load (and > read) just code, just data, just fuses; in xwisp: select command ('select -a+f' for just fuses) > when you read from the chip, it > gives you a hex display of what it read. xwips can 'dump', but only as hex. > only Wouter > would stop writing code and produce come documentation (hint, hint!). But Microchip keeps turning out new chips with new programming algorithms! Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: http://www.voti.nl consultancy, development, PICmicro products -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics