Post by thread:[EE]: DS1306, MAX3100, and ADC0832 comms

Has anybody used any of these devices with a PIC? We're having all kinds of fun - the DS1306 xtal doesn't appear to be oscillating the values read back out of the chip don't make any sense I haven't gotten to test the MAX and ADC parts yet - hopefully they will be cleaner. Any pointers would be appreciated. Thanks Andy ------------------------------------------------------------------- Race Boats - spam_OUTandyTakeThisOuTRC-Hydros.com http://www.RC-Hydros.com Airplanes - .....andyKILLspam@spam@FlyingHobbies.com http://www.FlyingHobbies.com Electronics - andyKILLspamMontanaDesign.com http://www.MontanaDesign.com ------------------------------------------------------------------- -- http://www.piclist.com hint: To leave the PICList .....piclist-unsubscribe-requestKILLspam.....mitvma.mit.edu

Do you have the lithium cell connected? I understand the 1306 & 1307 won't work without it. Going to test that on mine later this weekend, I was wondering why I got the same thing until I saw a post about the same problem on the CCS C user forum. Dale --- We are Dyslexia of Borg. Fusistance is retile. Your ass will be laminated. On Sat, 2 Nov 2002, Andy Kunz wrote: > the DS1306 xtal doesn't appear to be oscillating > the values read back out of the chip don't make any sense -- http://www.piclist.com hint: To leave the PICList EraseMEpiclist-unsubscribe-requestspam_OUTTakeThisOuTmitvma.mit.edu

Howdy Andy! It's been awhile since I used a MAX3100 with a PIC but I had an application using a remote sensor that sent data at 115Kbaud using 9-Bit addressing. All I can say is the MAX3100 worked as advertized using a simple `bit-banged' SPI interface. I was working from data sheet 19-1259; Rev 0; 7/97. As far as the DS1306, I've used similar parts and they always had a configuration bit to start the oscillator. - Tom At 02:21 02-11-02, Andy Kunz wrote: {Quote hidden}>Has anybody used any of these devices with a PIC? We're having all kinds >of fun - > >the DS1306 xtal doesn't appear to be oscillating >the values read back out of the chip don't make any sense > >I haven't gotten to test the MAX and ADC parts yet - hopefully they will be >cleaner. > >Any pointers would be appreciated. > >Thanks > >Andy -- http://www.piclist.com hint: To leave the PICList piclist-unsubscribe-requestspam_OUTmitvma.mit.edu

Hi Tom! I got both working later on. Just have to use the right SPI mode and have the technicial glue the xtal down right! Andy At 05:16 PM 11/2/02 -0800, you wrote: {Quote hidden}> Howdy Andy! It's been awhile since I used a MAX3100 with a PIC but I >had an application using a remote sensor that sent data at 115Kbaud >using 9-Bit addressing. All I can say is the MAX3100 worked as >advertized using a simple `bit-banged' SPI interface. I was working >from data sheet 19-1259; Rev 0; 7/97. > > As far as the DS1306, I've used similar parts and they always had a >configuration bit to start the oscillator. > > - Tom > >At 02:21 02-11-02, Andy Kunz wrote: >>Has anybody used any of these devices with a PIC? We're having all kinds >>of fun - >> >>the DS1306 xtal doesn't appear to be oscillating >>the values read back out of the chip don't make any sense >> >>I haven't gotten to test the MAX and ADC parts yet - hopefully they will be >>cleaner. >> >>Any pointers would be appreciated. >> >>Thanks >> >>Andy > >-- >http://www.piclist.com hint: To leave the PICList >@spam@piclist-unsubscribe-requestKILLspammitvma.mit.edu > > ------------------------------------------------------------------- Race Boats - KILLspamandyKILLspamRC-Hydros.com http://www.RC-Hydros.com Airplanes - RemoveMEandyTakeThisOuTFlyingHobbies.com http://www.FlyingHobbies.com Electronics - spamBeGoneandyspamBeGoneMontanaDesign.com http://www.MontanaDesign.com ------------------------------------------------------------------- -- http://www.piclist.com hint: To leave the PICList TakeThisOuTpiclist-unsubscribe-requestEraseMEspam_OUTmitvma.mit.edu

On Sat, 2 Nov 2002, Andy Kunz wrote: *>I got both working later on. Just have to use the right SPI mode and have *>the technicial glue the xtal down right! ^^^^^^^^^^^^^^^^^^^^^^^^ ;-) ? Peter -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

Hi Andy, we used the MAX3100 in some projects. Works just prefectly. Though, we didn't use PICs, we had AVRs in that project. Should make no difference for the MAX, I guess. regards, Reelf Andy Kunz schrieb: {Quote hidden}> > Has anybody used any of these devices with a PIC? We're having all kinds > of fun - > > the DS1306 xtal doesn't appear to be oscillating > the values read back out of the chip don't make any sense > > I haven't gotten to test the MAX and ADC parts yet - hopefully they will be > cleaner. > > Any pointers would be appreciated. > > Thanks > > Andy > > ------------------------------------------------------------------- > Race Boats - RemoveMEandyTakeThisOuTRC-Hydros.com http://www.RC-Hydros.com > Airplanes - andyEraseME.....FlyingHobbies.com http://www.FlyingHobbies.com > Electronics - EraseMEandyMontanaDesign.com http://www.MontanaDesign.com > ------------------------------------------------------------------- > > -- > http://www.piclist.com hint: To leave the PICList > RemoveMEpiclist-unsubscribe-requestEraseMEEraseMEmitvma.mit.edu -- SyWiTec * Systeme für Wissenschaft und Technik Bamberg & Monsees GbR Steindamm 22 * D-28719 Bremen Fon +49-421-646775 * Fax +49-421-646785 http://www.sywitec.de/ -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

At 07:09 AM 11/3/02 +0200, you wrote: >On Sat, 2 Nov 2002, Andy Kunz wrote: > >*>I got both working later on. Just have to use the right SPI mode and have >*>the technicial glue the xtal down right! > ^^^^^^^^^^^^^^^^^^^^^^^^ >;-) ? It's an SMT one, long rectangle shape (ECS-306 series, see Digikey). It has a sloped end on pin 1 side, and a single dot at the other end. He put the dot to pin 1 location on the board. I can see why he was confused. Andy ------------------------------------------------------------------- Race Boats - RemoveMEandyspam_OUTKILLspamRC-Hydros.com http://www.RC-Hydros.com Airplanes - RemoveMEandyTakeThisOuTspamFlyingHobbies.com http://www.FlyingHobbies.com Electronics - EraseMEandyspamspamBeGoneMontanaDesign.com http://www.MontanaDesign.com ------------------------------------------------------------------- -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

Hi, Andy Kunz wote: >Has anybody used any of these devices with a PIC? We're having all kinds >of fun - Well the MAX3100 is used by an current project, it works basiclly as advertized however I have major objections regarding the IRQ function. My handler for the uart was an isr based piece of code, and used an documented feature where one can abort the 16 bit spi transfer after the first 2 bits ( rx/tx buffers status ) if one was so inclined (i.e. the tx was empty and I had no more bytes to send, and the rx was empty). I never really got it working the way I assumed it would. I had to write the code in an extremly ugly way ( an loop inside the isr handler ) as the irq pin from the uart, in some cases never triggered the int pin of the pic. Now these problem could be caused by either my assumptions, my code, or something relating to pic int pin and the MAX3100 int pin. However, the way it's written now it has never failed me or caused any side effects. I think I even have some pseudo code that I can share. /Tony -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

>code in an extremly ugly way ( an loop inside the isr handler ) as the I did the same as well, but it runs pretty quick so I don't mind. The problem I had with getting it to start talking right away was that the IRQasn't being generated at initial startup to send a character. After you put a char into the software queue (to feed the ISR) you need to enable the Transmit Empty IRQ bit from the character buffer-writer. You only need to do it if this is the first char in the buffer. After that, the ISR handles it OK. This was a really slick chip to get working. I like it! It'll end up more designs, for sure. I used the basic framework for the ISR that I use for the on-PIC UART. Tomorrow morning I start on the ADC chip. It should be pretty straightforward. Andy ------------------------------------------------------------------- Race Boats - RemoveMEandyKILLspamRC-Hydros.com http://www.RC-Hydros.com Airplanes - andySTOPspamspam_OUTFlyingHobbies.com http://www.FlyingHobbies.com Electronics - spamBeGoneandySTOPspamEraseMEMontanaDesign.com http://www.MontanaDesign.com ------------------------------------------------------------------- -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads