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Some newer Huawei modems have support for ^USSDMODE command which seems
to be default to 1. In that mode the text USSD is not working. Switching
it to 0 and text USSD works just fine. Assumption is that with this command
the modem switches between text and PDU mode for USSD. Currently it is
unclear on how the PDU mode is suppose to work all. So default to text mode
if this command is supported.
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Add support for voice-only SIM cards and enable phonebook atom for
non-voice modems.
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Huawei EM770W is a 3G WCDMA modem that supports HSPA/UMTS/EDGE/GPRS/GSM
data service and WCDMA/GSM short message services. It also has voice
call capability that supports both 2G and 3G network.
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Huawei always closes the tty port after PPP disconnect. Handle this in
huawei plugin, similarly as done with novatel. Now there's no need
to unplug the modem after disconnection.
Tested with Huawei E1552.
Based on a patch by Marcel Holtmann:
commit 0329a6ceaf8f69857cb5f8437b9db86ca327ef1d
Author: Marcel Holtmann <marcel@holtmann.org>
Date: Mon Jun 7 02:36:12 2010 -0700
Reopen the GPRS context channel when the modem closes it after PPP
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- Use the PCUI (event) port for all commands unrelated to ppp
- Use the Modem port for ppp
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These modems don't support voicecall anyway. Recommended by Denis.
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Instead of using ofono_modem_set_powered(), use ofono_sim_inserted_notify()
which is the proper way to notify about sim state changes.
Now the problem is that voicecall commands fail with my Huawei E1552:
ofonod[12395]: > AT+CRC=1\r
ofonod[12395]: src/sim.c:ofono_sim_add_state_watch() 0x1bf8e50
ofonod[12395]: src/sim.c:ofono_sim_add_state_watch() 0x1bf8e50
ofonod[12395]: < \r\n+CME ERROR: SIM busy\r\n
ofonod[12395]: > AT+CLIP=1\r
ofonod[12395]: < \r\n+CME ERROR: SIM busy\r\n
ofonod[12395]: > AT+COLP=1\r
ofonod[12395]: < \r\n+CME ERROR: SIM busy\r\n
ofonod[12395]: > AT+CCWA=1\r
ofonod[12395]: < \r\n+CME ERROR: SIM busy\r\n
ofonod[12395]: drivers/atmodem/voicecall.c:at_voicecall_initialized()
voicecall_init: registering to notifications
ofonod[12395]: src/sim.c:ofono_sim_add_state_watch() 0x1bf8e50
ofonod[12395]: > AT^SYSINFO\r
ofonod[12395]: < \r\n^SYSINFO:0,0,0,0,255,,0\r\n\r\nOK\r\n
ofonod[12395]: > AT+CGMI\r
ofonod[12395]: < \r\nhuawei\r\n\r\nOK\r\n
ofonod[12395]: EventChannel: < \r\n^STIN:0,0,0\r\n
ofonod[12395]: > AT+CLCC\r
ofonod[12395]: < \r\n+CME ERROR: SIM busy\r\n
But as I can't make voice calls with this modem anyway, I don't worry
about them right now.
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With Huawei E1552 I got sim busy errors when I plugged in the modem
and ofono was already running:
May 24 17:02:04 tukki ofonod[7619]: > AT+CRC=1\r
May 24 17:02:04 tukki ofonod[7619]: < \r\n+CME ERROR: SIM busy\r\n
May 24 17:02:04 tukki ofonod[7619]: > AT+CLIP=1\r
May 24 17:02:04 tukki ofonod[7619]: < \r\n+CME ERROR: SIM busy\r\n
Fix this by following sim state changes with ^SIMST notification and
only enable modem after SIM is ready. In case SIM is already ready
and we miss the notification for some reason, also use AT^SYSINFO
to check the state during enable phase.
Also change huawei_enable() to return -EINPROGRESS to make sure that
ofono modem is not powered too early. I believe this was a bug.
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Tested with Huawei E1552 HSDPA USB stick using a finnish Saunalahti prepaid
SIM.
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Add ofono_sim_inserted_notify function to notify the core of SIM
insertion / removal.
Make every plugin generate a sim inserted event on start. For devices
with removable card, the event should be emitted after the
plugin detects such event. For devices that need to wait for SIM card
initialization, they can emit this event later.
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With V1 parser the driver fails to detect when a SMS is successfully
sent and keeps re-trying until Max retries.
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For Huawei driver
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