Dear All,
I made a new project with the Simcom SIM800C GPRS chip.
The module has two serial port that are connected to a CP2016
USB-to-UART chip. After some work i get the module working with the
sim900 driver that supports also the SIM800.
I can dial numbers read and sen SMS messages, etc, etc. I works fine.
Now, I have problem with the gprs connection.
I cannot use the official testing programs because they require python
that is not available in my poor buildroot rootfs, but I have the
dbus-send utility.
Here is the situation.
The modem is up and ruinning:
# dbus-send --system --print-reply --dest=org.ofono /
org.ofono.Manager.GetModems
method return time=1557938457.226027 sender=:1.3 -> destination=:1.22
serial=79 reply_serial=2
array [
struct {
object path "/sim900_0"
array [
dict entry(
string "Online"
variant boolean true
)
dict entry(
string "Powered"
variant boolean true
)
dict entry(
string "Lockdown"
variant boolean false
)
dict entry(
string "Emergency"
variant boolean false
)
dict entry(
string "Manufacturer"
variant string "SIMCOM_Ltd"
)
dict entry(
string "Model"
variant string "SIMCOM_SIM800C"
)
dict entry(
string "Revision"
variant string "Revision:1418B06SIM800C24"
)
dict entry(
string "Serial"
variant string "869270046863956"
)
dict entry(
string "SystemPath"
variant string
"/sys/devices/soc0/soc/2100000.aips-bus/2184200.usb/ci_hdrc.1/usb1/1-1/1-1.1/1-1.1:1.1/ttyUSB1"
)
dict entry(
string "Interfaces"
variant array [
string "org.ofono.Phonebook"
string "org.ofono.SmartMessaging"
string "org.ofono.PushNotification"
string "org.ofono.MessageManager"
string "org.ofono.CallVolume"
string "org.ofono.VoiceCallManager"
string "org.ofono.ConnectionManager"
string "org.ofono.SupplementaryServices"
string "org.ofono.NetworkRegistration"
string "org.ofono.AllowedAccessPoints"
string "org.ofono.SimManager"
]
)
dict entry(
string "Features"
variant array [
string "sms"
string "gprs"
string "ussd"
string "net"
string "sim"
]
)
dict entry(
string "Type"
variant string "hardware"
)
]
}
]
I created a new internet context with a working configuration (tested in
another platform):
# dbus-send --system --print-reply --dest=org.ofono /sim900_0/context1
org.ofono.ConnectionContext.GetProperties
method return time=1557937482.290288 sender=:1.3 -> destination=:1.17
serial=71 reply_serial=2
array [
dict entry(
string "Name"
variant string "Internet"
)
dict entry(
string "Active"
variant boolean false
)
dict entry(
string "Type"
variant string "internet"
)
dict entry(
string "Protocol"
variant string "ip"
)
dict entry(
string "AccessPointName"
variant string "tre.it"
)
dict entry(
string "Username"
variant string "user"
)
dict entry(
string "Password"
variant string "password"
)
dict entry(
string "AuthenticationMethod"
variant string "pap"
)
dict entry(
string "Settings"
variant array [
]
)
dict entry(
string "IPv6.Settings"
variant array [
]
)
]
but when I try to Activate the context it gives me this error:
# dbus-send --system --print-reply --dest=org.ofono /sim900_0/context1
org.ofono.ConnectionContext.SetProperty string:"Active" variant:boolean:true
Error org.ofono.Error.NotImplemented: Implementation not provided
and the "Active" property stay false.
What's wrong?
Any suggestion is very appreciated.
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