GSM_SetIncomingUSSDCallback is never called with libgammu 1.36.5 #130
Comments
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There is no difference in the communication with the modem, so that looks quite strange. Do you get some error from Gammu? |
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No,no errors at all. Another thing to add is that A place in my code why I think |
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It doesn't return bool, it returns number of bytes read. So it might be that Gammu didn't yet receive complete reply and could not parse it because of it. |
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I currently do not have the modem so i cant debug the problem by tracing code paths taken for now but looking at the code and i think there is a bug documented below: When things work as expected,user callback function is called[1] and then the function exits with "success"[2]. But when things fail,there is this[3] code path that exits with "success" without calling the user callback function. How does whoever calls Looking at other premature exists due to errors and i think the user callback should be called with an "empty" object to let the user know something went wrong instead of just deciding to say nothing. [1] gammu/libgammu/phone/at/atgen.c Line 1719 in bbe8224 [2] gammu/libgammu/phone/at/atgen.c Line 1723 in bbe8224 [3] gammu/libgammu/phone/at/atgen.c Line 1647 in bbe8224 |
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The [3] happens only when invoking the AT+CUSD (the reply string then doesn't start with +CUSD, but with AT+CUSD, so it's not the incoming message. So I believe the code is correct here. As your log doesn't show the received message at all, I'm still quite sure it's the problem I've described - Gammu didn't read enough data to get complete response so it did not process it yet. Calling GSM_ReadDevice just once is not enough in this case. |
I have a modem that ``lsusb` identifies as:
When the modem is connected to the computer,dmesg reports the following:
The problem seems to be that a call back function set with
GSM_SetIncomingUSSDCallback()is not called with libgammu version1.36.5but it does work correctly when using libgammu version1.33.0Logs for libgammu version
1.33.0where things work andGSM_DialService()generates a response is below:Logs for libgammy version
1.36.5where things do not work will follow afterwardslogs for libgammu version
1.36.5follows:The text was updated successfully, but these errors were encountered: