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05-29-2005, 08:12
| #1 (permalink) |
| No Life Poster   Join Date: Jun 2001 Location: www.microera.si
Posts: 1,535
Member: 4923 Status: Offline Thanks Meter: 74 | SMS (PDU) with Siemens C35 I'm build small board with Atmel 90s8535 and I try to send SMS with PDU true Siemens C35 phone! I know format of PDU and "I know" how to send SMS but I have some trubbles...  Here is my example of sending PDU: at+cmgs=24 > 0011000B918356318567F00000000BCAB7BE0CA297E7F45908 ERROR I get ERROR in 95%  Only sometimes SMS is sent OK! Why? In case of ERROR I see on the pohone. "Searching" for few seconds!!!!!! Like without signal! Why? If I work with hyperTerminal then sending is ALLWAYS without problems! ALLWAYS OK! Why? I test with and without pullups on Tx lines and it's the same! THANKS for any answer, Joze p.s. If all is OK then I receive like this from C35: at+cmgs=24 > 0011000B918356318567F00000000BCAB7BE0CA297E7F45908 +CMGS: 128 OK |
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05-29-2005, 08:38
| #3 (permalink) | |
| Freak Poster  Join Date: May 2003 Location: Poland Age: 36
Posts: 233
Member: 29897 Status: Offline Thanks Meter: 3 | Quote:
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05-29-2005, 10:11
| #4 (permalink) |
| No Life Poster Join Date: Jun 2001 Location: www.microera.si
Posts: 1,535
Member: 4923 Status: Offline Thanks Meter: 74 | @Danchik baud rates are OK..... @adihack YES YES and YES now all is OK! I add 470E and 3V3 zener diode! NOW I GET THIS: AT OK at+cmgs=30 > 0011000B918356318567F000000012CAB7BE0C82BFE76C7519 346D4E63B219 +CMGS: 146 OK AT OK at+cmgs=24 > 0011000B918356318567F00000000BCAB7BE0CA297E7F45908 +CMGS: 147 OK AT OK at+cmgs=24 > 0011000B918356318567F00000000BCAB7BE0CA297E7F45908 +CMGS: 148 OK AT OK at+cmgs=24 > 0011000B918356318567F00000000BCAB7BE0CA297E7F45908 +CMGS: 149 OK |
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05-30-2005, 20:15
| #5 (permalink) | |
| No Life Poster Join Date: Jun 2001 Location: www.microera.si
Posts: 1,535
Member: 4923 Status: Offline Thanks Meter: 74 | Quote:
And what about new Siemens Phones? Example A60? Is solution with 3v3 zener good? | |
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