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authorJo-Philipp Wich <jow@openwrt.org>2012-08-19 15:59:24 +0000
committerJo-Philipp Wich <jow@openwrt.org>2012-08-19 15:59:24 +0000
commitba15f1784c9c993968a3fd46977b5c347ca15ad8 (patch)
treec49d12a05bc3e2ef941c8c57b5f2b8d6fbc520d9 /package
parent3133d4d8debf714a92831f5a2e1215f58b49afc7 (diff)
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comgt: handle service mode for Huawai modems (#12039)
It seems that the comgt package does not handle the Huawei 3G USB dongle E176 correctly (and probably other Huawei dongles too). My dongle appears as ID 12d1:1001 Huawei Technologies Co., Ltd. E620 USB Modem and 3G/UMTS connections work well. However, no connection is established if only 2G/GPRS is available: the pppd chat script fails with NO CARRIER although the dongle is registered to the network (via 2G). As outlined in this wiki or this blog, Huawei chips use the AT^SYSCFG command to set 2G or 3G mode, which is not implemented in comgt at the moment. Thus I wrote a patch for /lib/network/3g.sh which adds support for the "service" option in the network configuration with Huawei dongles. By default (if no "service" option is specified) also 2G is used when 3G is unavailable. The Huawei dongle is detected analogously to other chips (the output of gcom -d /dev/ttyUSB0 -s /etc/gcom/getcardinfo.gcom is scanned for huawei). Some further information: The AT^SYSCFG command seems to be respected only once after the dongle is attached (or after the host is powered up). Resetting the dongle seems to render the serial port unusable in some cases. However, the patch sets a useful mode by default which should cover most use cases (3G preferred, but 2G allowed) and if 3G-only or 2G-only mode is required the device can be power cycled. SVN-Revision: 33212
Diffstat (limited to 'package')
-rw-r--r--package/comgt/Makefile4
-rw-r--r--package/comgt/files/3g.sh7
2 files changed, 9 insertions, 2 deletions
diff --git a/package/comgt/Makefile b/package/comgt/Makefile
index adaaa4fe64..ef0164ea35 100644
--- a/package/comgt/Makefile
+++ b/package/comgt/Makefile
@@ -1,5 +1,5 @@
#
-# Copyright (C) 2006-2011 OpenWrt.org
+# Copyright (C) 2006-2012 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
PKG_NAME:=comgt
PKG_VERSION:=0.32
-PKG_RELEASE:=9
+PKG_RELEASE:=19
PKG_SOURCE:=$(PKG_NAME).$(PKG_VERSION).tgz
PKG_SOURCE_URL:=@SF/comgt
diff --git a/package/comgt/files/3g.sh b/package/comgt/files/3g.sh
index b5da54c44d..9e44d06650 100644
--- a/package/comgt/files/3g.sh
+++ b/package/comgt/files/3g.sh
@@ -52,6 +52,13 @@ proto_3g_setup() {
export MODE="AT_OPSYS=${CODE}"
elif echo "$cardinfo" | grep -q "Sierra Wireless"; then
SIERRA=1
+ elif echo "$cardinfo" | grep -q huawei; then
+ case "$service" in
+ umts_only) CODE="14,2";;
+ gprs_only) CODE="13,1";;
+ *) CODE="2,2";;
+ esac
+ export MODE="AT^SYSCFG=${CODE},3FFFFFFF,2,4"
fi
if [ -n "$pincode" ]; then