Editing Porting/Cellular Modem
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The Cellular Modem architecture on the N900 consists of a daemon, the Cellular Services Daemon that talks to the cellular modem via ISI packets, a daemon, the System Synchronization Controller Daemon that handles cellular modem state, a daemon, the Phonet AT modem daemon that emulates AT commands on top of phonet and configuration utilities to configure phonet interfaces. | The Cellular Modem architecture on the N900 consists of a daemon, the Cellular Services Daemon that talks to the cellular modem via ISI packets, a daemon, the System Synchronization Controller Daemon that handles cellular modem state, a daemon, the Phonet AT modem daemon that emulates AT commands on top of phonet and configuration utilities to configure phonet interfaces. | ||
- | + | The Cellular Services Daemon exposes the following dbus interfaces: | |
- | + | * com.nokia.csd.Call (handles phone calls) | |
- | The Cellular Services Daemon exposes the following dbus interfaces | + | * com.nokia.csd.Call.Instance (handles a specific instance of a phone call) |
- | + | * com.nokia.csd.Call.Conference (handles conference calls) | |
- | + | * com.nokia.csd.GPRS (handles cellular data transfer) | |
- | + | * com.nokia.csd.GPRS.Context (handles a specific cellular data context) | |
- | + | * Phone.Net (handles network related things including signal strength, change of cell/operator, change between 2g/3g and network time info change) | |
- | + | * Phone.Sim (handles SIM related things including IMSI, HPLMN and SIM status) | |
- | + | * Phone.Sim.Security (handles SIM security related things including IMEI, simlock and SIM PIN) | |
- | + | * Phone.Sim.Phonebook (handles SIM phonebook) | |
- | + | com.nokia.csd.SMS.Outgoing (handles outgoing SMS messages) | |
- | + | com.nokia.csd.SMS.SIM (handles SMS messages stored on the SIM) | |
- | + | Phone.SMS (handles SMS messages including Cell Broadcast SMS messages) | |
- | + | com.nokia.csd.SS (handles Supplementary Services such as call divert call barring and call waiting) | |
- | + | com.nokia.csd.SS.USSD (handles USSD codes) | |
- | + | com.nokia.phone.SSC (handles cellular modem state and status) | |
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+ | The proposal I have for porting the Cellular stack to new hardware (anything with a different cellular modem to the N900) is as follows: | ||
# Reverse engineer the dbus interfaces (as listed above) exposed by the Cellular Services Daemon and System Synchronization Controller Daemon. | # Reverse engineer the dbus interfaces (as listed above) exposed by the Cellular Services Daemon and System Synchronization Controller Daemon. | ||
# For each interface/signal/method call, implement a compatible interface/signal/method call on top of oFono or fsogsmd (or another cellular stack) | # For each interface/signal/method call, implement a compatible interface/signal/method call on top of oFono or fsogsmd (or another cellular stack) | ||
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Not sure yet what to do about phonet-at and phonet-utils (not even sure where they get used, probably something to do with Nokia Suite I suspect) | Not sure yet what to do about phonet-at and phonet-utils (not even sure where they get used, probably something to do with Nokia Suite I suspect) | ||
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