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05-23-2002, 20:13 | #1 (permalink) |
Junior Member Join Date: Sep 2001 Location: Portugal
Posts: 15
Member: 6294 Status: Offline Thanks Meter: 0 | Flaher cable with mbus - creating software for it Regarding jan's schematic for a mixed flasher/mbus cable, I'll start coding software that supports it this weekend. In the meantime, I have some doubts: - Does de data come inverted from the phone only, or it must be sent inverted too? - Which pin do we use to send the data? - Which schottky diodes can we use to replace the BAT42 one? (can't seem to find that in Portugal...) I don't really understand very much about electronics, so I need all the help you can give me. (Jan, are you there? ) Regards, ../Al (NOTE: For those who don't know what I'm talking about, please refer topic http://forum.gsmhosting.com/vbb/show...s&pagenumber=1 ) Last edited by al_capote; 05-23-2002 at 21:01. |
05-24-2002, 05:11 | #2 (permalink) |
No Life Poster Join Date: Nov 2001 Location: England Age: 41
Posts: 2,821
Member: 7653 Status: Offline Thanks Meter: 823 | this is how i see it, the lpt1 port automatically inverts the output on some of the pins (data pins) which is why the dejan interface uses a hex inverter to turn it back around my own research: (lpt1 port pin)-(lpt1 port pin name)-(pin info)-(data in or out)-(connection on phone) 22-Gnd-ground-n/a-Ground 13-Select-+ve-in-VPP 2-data 0-inverted-out-m bus 4-data 2-inverted-out-f bus Rx 6-data 4-inverted-out-B temp 11-busy-inverted(hardware inverted)-in-f bus Tx hth a little |
06-05-2002, 20:31 | #5 (permalink) | |
Freak Poster Join Date: Nov 2001 Location: Omsk, Russia Age: 41
Posts: 121
Member: 7337 Status: Offline Thanks Meter: 0 | Quote:
Dejan uses Hex Invertor to make better TTL-signal from LPT! | |
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