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ishiyakazuo · 08-21-2008, 11:05 AM

@dcb: Just relax

To the code, it doesn't matter which you're using, so long as the signaling is correct. The transistor method will likely work fine too. But I don't want to risk having to debug both HW and SW at the same time, so I'm gonna use the Freescale on my end, so I know the levels are correct in my particular application. (If we were using the same PIC, there'd be absolutely zero risk, but who knows how the pullup/pulldown values match up with the PIC's?)

EDIT: Nevermind again. I didn't notice that on perquin it even says it's for interfacing with ATmega8, which should be fully compatible on the UART pins. Actually, I like it a lot because it's all 10k resistors, so a resistor network (http://search.digikey.com/scripts/Dk...10X-2-103LF-ND) and two BC547s (http://search.digikey.com/scripts/Dk...=BC547BTACT-ND) would do it much cheaper than the Freescale. I'm sold on it!

@Magister: Sorry, looks like I glossed over the get_pid() function earlier

Nevermind about a lot of what I said then.
I'll take a peek at the OBDuino code again tonight to get more familiar with it

08-21-2008, 11:05 AM	#168 (permalink)
ishiyakazuo Test Tool Engr. Join Date: Aug 2008 Location: Elgin, IL, USA Posts: 47 Red Rocket - '02 Honda Civic LX Sedan 90 day: 33.57 mpg (US) Bronze Bucket - '98 Toyota Corolla VE 90 day: 34.97 mpg (US) Silver Bullet - '06 Hyundai Sonata GL 90 day: 31.58 mpg (US) Thanks: 0 Thanked 0 Times in 0 Posts	@dcb: Just relax To the code, it doesn't matter which you're using, so long as the signaling is correct. The transistor method will likely work fine too. But I don't want to risk having to debug both HW and SW at the same time, so I'm gonna use the Freescale on my end, so I know the levels are correct in my particular application. (If we were using the same PIC, there'd be absolutely zero risk, but who knows how the pullup/pulldown values match up with the PIC's?) EDIT: Nevermind again. I didn't notice that on perquin it even says it's for interfacing with ATmega8, which should be fully compatible on the UART pins. Actually, I like it a lot because it's all 10k resistors, so a resistor network (http://search.digikey.com/scripts/Dk...10X-2-103LF-ND) and two BC547s (http://search.digikey.com/scripts/Dk...=BC547BTACT-ND) would do it much cheaper than the Freescale. I'm sold on it! @Magister: Sorry, looks like I glossed over the get_pid() function earlier Nevermind about a lot of what I said then. I'll take a peek at the OBDuino code again tonight to get more familiar with it Last edited by ishiyakazuo; 08-21-2008 at 11:16 AM..