Post by thread:16F877 Routines

Goodday All, Have been playing with the 16F84 for a few weeks now and can flash a few leds, Rx an Rs232 from PC and drive a LCD. Think the semi-mastering of the 16F84 is the way to go before one jumps into the 16F877. The 16F84 is great as there is a lot of beginners code around to download etc. (have been playing around for 20 years since the 8008) So at last my questions. 1. Where do I find a few sites that have 16F877 code. 2. Any Pic books that specialize on the 16F877 (zero Pic books in any Melbourne technical book stores) 3. What does OT stand for? 4. Any clues on how to sort the Piclist emails from other emails.(my business emails get swamped, and often lost for a few days) Tks Grant Forest { will not waste space with Quotes, Qualifications etc..}

> > Goodday All, > > Have been playing with the 16F84 for a few weeks now and can flash a few > leds, Rx an Rs232 from PC and drive a LCD. Think the semi-mastering of > the 16F84 is the way to go before one jumps into the 16F877. Could be. But considering that between the Low Voltage Programming mode which lets you build a programmer with a cable, and tools like Tony Nixon's ROMzap (http://www.picnpoke.com/demo/ROMzap.zip) that allows for in-circuit programming using only a serial cable, it's debabtable as to whether the 16F84 is the best place to start. > > The 16F84 is great as there is a lot of beginners code around to download > etc. (have been playing around for 20 years since the 8008) And almost all of that code works on the 16F877. The only caveat is that the portA registers are initialized as Analog inputs. Once they are turned into digital inputs you can use it just like a 16F84, with more ports, and of course more peripherals. As for the periperals, they are compatible with the peripherals of the rest of the midrange PIC family. Code examples for the A/D, timer capture, and serial is the same as the 16C7X and 16C6X parts. > > So at last my questions. > 1. Where do I find a few sites that have 16F877 code. You can be less part specific. Look for code for PIC's in general and they'll work fine with the 16F87X parts. > 2. Any Pic books that specialize on the 16F877 (zero Pic books in any > Melbourne technical book stores) No. It's too soon for that. May later this year. Again Any of the existing PIC books that use the midrange PIC parts like the 16C74 are appropriate. > 3. What does OT stand for? Off Topic. used to mark messages that are not directly related to PICs. > 4. Any clues on how to sort the Piclist emails from other emails.(my > business emails get swamped, and often lost for a few days) Depends on the system and E-mail program you're using. Most have some mechanism for filtering. I'm using procmail on my Sun to direct PICLIST messages to its own folder. Hope this helps, BAJ

On Sat, 11 Mar 2000, Grant Forest wrote: > So at last my questions. > 1. Where do I find a few sites that have 16F877 code. gpsim (a software simulator) is now in source forge CVS. I've got a couple of 16f877 .asm files that I wrote just to test the peripherals of the 16f877. Which is to say, the programs do nothing useful as such, but they illustrate how the peripherals can be programmed. (Or, at least how I understand they should be programmed). The latest test programs illustrate code flash and data flash reads and writes and illustrate the 10-bit a/d converter programming. the gpsim source forge page is here: https://sourceforge.net/project/?group_id=2341 and the cvs repository: http://cvs.sourceforge.net/cgi-bin/cvsweb.cgi/?cvsroot=gpsim from here you can navigate down examples/14bit: http://cvs.sourceforge.net/cgi-bin/cvsweb.cgi/examples/14bit/?cvsroot=gpsim Many midrange core test programs may be found here. The two 16f877 examples are p16f877_test.asm and p16f877_test2.asm http://cvs.sourceforge.net/cgi-bin/cvsweb.cgi/examples/14bit/p16f877_test.asm?cvsroot=gpsim http://cvs.sourceforge.net/cgi-bin/cvsweb.cgi/examples/14bit/p16f877_test2.asm?cvsroot=gpsim Scott

On Sat, Mar 11, 2000 at 08:08:49PM +1100, Grant Forest wrote: > 4. Any clues on how to sort the Piclist emails from other emails.(my > business emails get swamped, and often lost for a few days) That depends on what email client you use. Most clients written over the past few years have some basic filtering capability built into them. Once you have located the filtering controls in your client, you then need to decide what part of the message to base the filtering rules on. What I did was change a setting on the server for my subscription. If you send a message to: spam_OUTlistervTakeThisOuTmitvma.mit.edu with the line: set piclist subjecthdr as the only contents of the message body, the server will put: [PICLIST] at the beginning of the subject line of messages sent to you. And you can then filter every message with a subject line that starts with [PICLIST] into a different folder. However, one of the primary factors will be the client that you use and what it is capable of. -- Mike Werner KA8YSD | "Where do you want to go today?" ICQ# 12934898 | "As far from Redmond as possible!" '91 GS500E | Morgantown WV | Only dead fish go with the flow.

I have also noticed that all my piclist messages have .....PICLISTKILLspam@spam@MITVMA.MIT.EDU in the to line. I filter them that way using MS outlook express. Good luck {Quote hidden}> On Sat, Mar 11, 2000 at 08:08:49PM +1100, Grant Forest wrote: > > 4. Any clues on how to sort the Piclist emails from other emails.(my > > business emails get swamped, and often lost for a few days) > > That depends on what email client you use. Most clients written > over the past few years have some basic filtering capability built > into them. Once you have located the filtering controls in your client, > you then need to decide what part of the message to base the filtering > rules on. What I did was change a setting on the server for my > subscription. If you send a message to: > listervKILLspammitvma.mit.edu > > with the line: > set piclist subjecthdr > > as the only contents of the message body, the server will put: > [PICLIST] > at the beginning of the subject line of messages sent to you. > And you can then filter every message with a subject line that starts > with [PICLIST] into a different folder. > > However, one of the primary factors will be the client that you use > and what it is capable of. > -- > Mike Werner KA8YSD | "Where do you want to go today?" > ICQ# 12934898 | "As far from Redmond as possible!" > '91 GS500E | > Morgantown WV | Only dead fish go with the flow. >

I don't understand why people think that the '84 is easier to start with than the '877. The '877 can directly run '84 code with a very few (and minor exceptions) and the ICD makes it very easy to watch the code run and debug it. Even without ICD, a bootloader like Tony's ROMZap and the stickleyregmon or picos can really make the '877 a joy at super low cost. See http://techref.massmind.org/idea/ebb for more info. See http://www.piclist.com for filtering piclist posts with special subject lines and definition of "OT". Please, please, please read this one page. --- James Newton .....jamesnewtonKILLspam.....geocities.com 1-619-652-0593 http://techref.massmind.org NEW! FINALLY A REAL NAME! Members can add private/public comments/pages ($0 TANSTAAFL web hosting) {Original Message removed}