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Recent content by johnni21

  1. J

    Help needed: GSM/GPRS modem and PIC

    Re: olimex pic gsm source code Tell the truth, I don't use the olimex, I connect pic18f45k20 -> M33G GSM module (both 3.3V). But the problem is the same "i only read CR LF". I tried to pull up the RX and TX pin with 47k resistor. Tried to connect RTS to CTS, then DSR to DTR, but nothing. I...
  2. J

    Help needed: GSM/GPRS modem and PIC

    Re: olimex pic gsm source code I did what you suggest me, but it didn't help. It seems that I only get back the first and the second characters from all characters. I set the echo, I get the "AT" and no CR LF. But I check the OERR after every ReadUSART, but there is not overrun.
  3. J

    Help needed: GSM/GPRS modem and PIC

    Re: olimex pic gsm source code But I would like to leave out the PC from the circuit. In this case I connect the serial pins (TX, RX) PIC<->GSM, then GSM RTS to an I/O pin of the PIC. Is it good?
  4. J

    Help needed: GSM/GPRS modem and PIC

    Re: olimex pic gsm source code But if I see the OK answer in the hyperterminal, why I don't see on the pin of the PIC? I connect only the RX and TX pin onthe PIC side, and on the PC side.
  5. J

    Problem in Interfacing PIC with GSM module SIM300

    The power key is, because the module works, the problem only with the module answer. The answer only CR LF and no "OK".
  6. J

    Help needed: GSM/GPRS modem and PIC

    Re: olimex pic gsm source code Could you explain how I should use the RTS line? At this moment I connect the PIC RX <- GSM TX, PIC TX -> GSM RX. I tried pull up the RTS but it does not help. Thank you Johnni21
  7. J

    Problem in Interfacing PIC with GSM module SIM300

    I also have the same problem. Did you succeed to solve this problem? Thx, Johnni21
  8. J

    Help needed: GSM/GPRS modem and PIC

    Re: olimex pic gsm source code Did you succeed to solve the problem? Because I also fall into this problem. Thx

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