Post by thread:One-wire routines of the CCS C compiler

{Quote hidden}> Date: Mon, 16 Mar 1998 08:52:15 -0800 > From: WF AUTOMACAO <spam_OUTwfTakeThisOuTambiente.com.br> > Organization: WF AUTOMACAO > To: .....wterrebKILLspam@spam@plessey.co.za > Subject: Re: One-wire routines of the CCS C compiler > Werner Terreblanche wrote: > > > > Hi > > > > Anybody out there using the CCS one-wire routines? I tried > > unsuccesfully this weekend to use the example routines that came > > with the compiler to interface to the Dallas DS1820 one-wire digital > > thermometer and I was wondering if anybody else have had success > > doing this? > > > > Rgds > > Werner > > Did you contact CCS? Not yet. I was rather hoping to find some other user of the compiler here on the Piclist who has used these routines before. It does not seem a big enough deal to bother CCS with something which is most probably a programming fault on my side. Mind you, reading my own message again, it looks as if I was trying to say that the CCS routines are not working. This is actually not what I meant.... What I meant to say was that I was unsuccessfull in implementing their routines in trying to use it in my own application to interface to a DS1820. It does not mean that their routines are incorrect and I feel that it is only fair that I correct myself here. I'm actually very happy with the CCS compiler and have used it successfully in a number of projects. -- Werner Terreblanche users.iafrica.com/w/we/wernerte/index.htm wterrebKILLspamplessey.co.za (work) OR .....wernerteKILLspam.....iafrica.com (home) Plessey SA, PO Box 30451,Tokai 7966, Cape Town, South Africa or at home : Suite 251, PostNet X5061, Stellenbosch, 7599 Tel +27 21 7102251 Fax +27 21 7102886 Home +27 21 8523249 ------------------------------------------------------------

> > Anybody out there using the CCS one-wire routines? I tried > unsuccesfully this weekend to use the example routines that came > with the compiler to interface to the Dallas DS1820 one-wire digital > thermometer and I was wondering if anybody else have had success > doing this? I played with this again last night and got it working. It was my fault. I forgot to put a 4K7 pull-up resistor on the one-wire input line. The examples given by CCS works well and I am now able to read the DS1820 without problems. Thanks to those of you that offered advice. Rgds Werner

Hello Werner & other PIC.ers, Could be CCS are having a hard time keeping up at the moment. I've been implementing the ex_pbusm.c routine to hang a bunch of 'F84s onto a one-wire bus, using the B0 pin as serial send/serial receive (receive under isr.). After hours of `after hours' grinding my brain against inscrutable code (for me, anyway) I finally had to swallow my pride & call for help - which they promptly gave me. Turns out there really was a bug or two in the source, and I've now got a revised edition from them. Haven't emerged from `Monday fire-fighting mode' yet to run it. .. To answer your question "can you help with DS1820 routine?", well...... not exactly, er.. but..... please be aware that the CCS routines as published with the docs. aren't necessarily infallible. However, the guys there have not dragged their fingers in coming up with answers, and I thank them for that. Best regards, John .. email from John Sanderson / JS Controls, Boksburg, RSA Manufacturer & purveyor of laboratory force testing apparatus and related products and services. Tel/fax: Johannesburg 893 4154 Cellphone 082 453 4815