User's Manual

New Product Requirement
Asiatelco Technologies Co. Proprietary/Confidential
39. AT+IONUC: Update configuration files OTA
40. AT+IONVO: Virtual Odometer
41. AT+IONVTO: Virtual Trip Odometer
4.5 Report
The MC891G captures data and forms a report record with that data. This is a single data
structure intended to contain all of the typically useful data on the MC891G. Other
information can be queried separately using separate AT commands.
Reports are always generated by interrupts regardless of whether or not there is a GPS lock.
If no lock has ever been attained since hardware reset, default values of 0 are returned for
all GPS fields. If a lock has been attained and lost, the report will contain the last valid GPS
data including the timestamp of that data.
Base Requirements：
1. A report is generated in response to either an interrupt event or in response to
execution of associated AT commands explicitly requesting one.
2. GPS coordinates are stored in reports as signed hex values to save space.
3. To reduce data transmission costs, the data within a report record can be masked
and removed before it is transmitted.
4. Every report has a tag and each enabled interrupt or event generates a separate
report. The report tags indicate the cause of the generated report, which can be an
interrupt, an event or in response to a command.
4.6 Reset
There is an internal soft reset.
4.6.1 Context Preservation
When a reset is caused by the Network Watchdog or by the Reset command (modes 0,1),
the context of the system is being preserved and is restored after the reset. The context
includes all the periodic timers, the report queue, the odometer, etc. This allows to reset the
unit as a troubleshooting measure either periodically or due to Network Watchdog without
losing reports that are already in the queue or are pending on running timers. Note that the
reset process may cause 1-2min of inaccuracy in the timers and should not be considered as
very precise.
Modes 8/9 of the IONRS command perform soft and hard reset respectively without
preserving any context. Factory reset (IONFR) also does not preserve any context of the
system.
4.7 Startup Banner
After a reset a startup banner is printed through the UART only. The format and content of
the banner shown below:
FW:<firmware version>; BIN:<bin version>; MEID/ESN:<MEID/ESN>
APN1:<apn1 name>; IP:<IP>:<port>;LPORT:<lport>
RI:<s,v,t>; DTE:<t1,t2,t3>; DI:<t>; HB:<t>; NR:<t,c,r>; RS:<a,t,r>