Post by thread:Temperature measuring with DS1820

Hello PIClers, I'm looking for software!! Is anybody in the PICworld able to give me hints about how to read out the DALLAS 1820 Temperature Sensor? It's a one-wire-chip... the timing of howto reading out the registers seems to be very critically? Thanks in advance! Wolfgang

At 16:05 29/09/98 +0200, you wrote: >I'm looking for software!! >Is anybody in the PICworld able to give me hints about how to read out the >DALLAS 1820 Temperature Sensor? It's a one-wire-chip... >the timing of howto reading out the registers seems to be very critically? You will find a complete ASM example with UMPS project for simulation with UMPS demo version at: http://www.vmdesign.com Regards, Philippe. +----------------------------------------------------+ | Virtual Micro Design | | Technopole Izarbel, | | 64210 BIDART | | FRANCE | | | | Phone: ++33 559.438.458 Fax: ++33 559.438.401 | | | | E-Mail: spam_OUTp.techerTakeThisOuTvmdesign.com | | URL: http://www.vmdesign.com | +----------------------------------------------------+

There are some code at http://zeus.brattberg.se Regards /Ake {Quote hidden}> -----Original Message----- > From: pic microcontroller discussion list > [.....PICLISTKILLspam@spam@MITVMA.MIT.EDU]On Behalf Of Wolfgang Willenbrink > Sent: Tuesday, September 29, 1998 4:06 PM > To: PICLISTKILLspamMITVMA.MIT.EDU > Subject: Temperature measuring with DS1820 > > > Hello PIClers, > I'm looking for software!! > Is anybody in the PICworld able to give me hints about how to read out the > DALLAS 1820 Temperature Sensor? It's a one-wire-chip... > the timing of howto reading out the registers seems to be very critically? > > Thanks in advance! > Wolfgang >

part 0 575 bytes content-type:application/octet-stream; >Hello PIClers, >I'm looking for software!! >Is anybody in the PICworld able to give me hints about how to read out the >DALLAS 1820 Temperature Sensor? It's a one-wire-chip... >the timing of howto reading out the registers seems to be very critically? I've got AVR8515 code for it. You're right though, it's rather touchy to get working Content-Type: application/octet-stream; name="Ds1820.asm" Content-Disposition: attachment; filename="Ds1820.asm" Attachment converted: wonderland:Ds1820.asm (????/----) (00018699)

Can you try the LM75, an i2c device from National Semiconductor? They are much cheaper than the dallas and yet the i2c codes can be use and re-use for other i2c chips (max of 8 devices) connected to the two PIC lines. Also, think of the 2x16 LCD display panel (i2c also!) Hope this helps. Eric Wolfgang Willenbrink wrote: > Hello PIClers, > I'm looking for software!! > Is anybody in the PICworld able to give me hints about how to read out the > DALLAS 1820 Temperature Sensor? It's a one-wire-chip... > the timing of howto reading out the registers seems to be very critically? > > Thanks in advance! > Wolfgang