i2SOM:Yocto: add dial script for LTE module

quectel-dial for EC20 module
gprs-dial for HuaWei 909s-821 module

meta-i2som-yocto/recipes-connectivity/ppp/files/gprs-dial

@@ -0,0 +1,32 @@
+hide-password
+noauth
+connect "/usr/sbin/chat -v -t 50 -f /etc/ppp/chatscripts/gprs-chat"
+ 
+#debug
+logfile
+/var/log/pppd-gprs.log
+/dev/ttyUSB0
+460800
+defaultroute
+noipdefault
+local
+lock
+dump
+#nodetach
+user " "
+remotename cmnet
+ipparam cmnet
+usepeerdns
+
+# reconnect while dial terminated instead of exit
+persist
+
+# send lcp-echo every 5 seconds to check the connection
+lcp-echo-interval 5
+
+# set max lcp-echo failue to 12, result in 12x5=60 seconds redial
+# if connection disconnected for some reason
+lcp-echo-failure 12
+
+# keep retrying forever if dial failed
+maxfail 0

meta-i2som-yocto/recipes-connectivity/ppp/files/quectel-chat-connect

@@ -0,0 +1,16 @@
+# /etc/ppp/peers/quectel-chat-connect
+ABORT "BUSY"
+ABORT "NO CARRIER"
+ABORT "NO DIALTONE"
+ABORT "ERROR"
+ABORT "NO ANSWER"
+TIMEOUT 30
+"" AT
+OK ATE0
+OK AT+CGATT=0
+OK AT+CGATT=1
+OK ATI;+CSUB;+CSQ;+CPIN?;+COPS?;+CGREG?;&D2
+# Insert the APN provided by your network operator, default apn is 3gnet
+OK AT+CGDCONT=1,"IP","3gnet",,0,0
+OK ATDT*99#
+CONNECT

meta-i2som-yocto/recipes-connectivity/ppp/files/quectel-chat-disconnect

@@ -0,0 +1,8 @@
+# /etc/ppp/peers/quectel-chat-disconnect
+ABORT "ERROR"
+ABORT "NO DIALTONE"
+SAY "\nSending break to the modem\n"
+""  +++
+""  +++
+""  +++
+SAY "\nGoodbay\n"

meta-i2som-yocto/recipes-connectivity/ppp/files/quectel-dial

@@ -0,0 +1,65 @@
+# /etc/ppp/peers/quectel-dial
+# Usage:root>pppd call quectel-pppd
+#Modem path, like /dev/ttyUSB3,/dev/ttyACM0, depend on your module, default path is /dev/ttyUSB3
+/dev/ttyUSB3 115200
+
+#Insert the username and password for authentication, default user and password are test
+#user "test" password "test"
+
+# The chat script, customize your APN in this file
+connect 'chat -s -v -f /etc/ppp/chatscripts/quectel-chat-connect'
+
+# The close script
+disconnect 'chat -s -v -f /etc/ppp/chatscripts/quectel-chat-disconnect'
+
+# Hide password in debug messages
+hide-password
+
+# The phone is not required to authenticate
+noauth
+
+# Debug info from pppd
+debug
+logfile
+/var/log/quectel-dial.log
+
+# If you want to use the HSDPA link as your gateway
+defaultroute
+
+# pppd must not propose any IP address to the peer
+noipdefault
+
+# No ppp compression
+#novj
+#novjccomp
+noccp
+ipcp-accept-local
+ipcp-accept-remote
+local
+
+# For sanity, keep a lock on the serial line
+lock
+dump
+#nodetach
+
+# Hardware flow control
+nocrtscts
+remotename 3gppp
+ipparam 3gppp
+ipcp-max-failure 10
+
+# Ask the peer for up to 2 DNS server addresses
+usepeerdns
+
+# reconnect while dial terminated instead of exit
+persist
+
+# send lcp-echo every 5 seconds to check the connection
+lcp-echo-interval 5
+
+# set max lcp-echo failue to 12, result in 12x5=60 seconds redial
+# if connection disconnected for some reason
+lcp-echo-failure 12
+
+# keep retrying forever if dial failed
+maxfail 0

meta-i2som-yocto/recipes-connectivity/ppp/ppp_%.bbappend

@@ -0,0 +1,22 @@
+
+FILESEXTRAPATHS_append := "${THISDIR}/files:"
+
+SRC_URI += " \
+    file://quectel-dial \
+    file://gprs-dial \
+    file://quectel-chat-connect \
+    file://quectel-chat-disconnect \
+"
+
+do_install_append () {
+    install -d ${D}${sysconfdir}/ppp/chatscripts
+    install -d ${D}${sysconfdir}/ppp/peers
+    install -m 0755 ${WORKDIR}/quectel-dial ${D}${sysconfdir}/ppp/peers/
+    install -m 0755 ${WORKDIR}/gprs-dial ${D}${sysconfdir}/ppp/peers/
+    install -m 0755 ${WORKDIR}/quectel-chat-connect ${D}${sysconfdir}/ppp/chatscripts/
+    install -m 0755 ${WORKDIR}/quectel-chat-disconnect ${D}${sysconfdir}/ppp/chatscripts/
+}
+
+#FILES_${PN} += "${sysconfdir}/ppp/"
+#FILES_${PN} += "${sysconfdir}/ppp/peers/"
+#FILES_${PN} += "${sysconfdir}/ppp/chatscripts"