Hi all!
I AVL product, I thought the following protocol for send data at each 2.5 sec.:
Lenght Description:
04B Module ID
02B Frame Type
02B Message Lenght
01B GPS: Satellite number
03B GPS: Date YYMMDD
03B GPS: HH:MM:SS
06B GPS: Latitude
06B GPS: Longitude
01B GPRS: Signal Level
01B Input State
01B Output State
01B Battery Level
02B Checksum 16bit CCITT
What Yours think? More data/information will improve something more?