List of Parameters: Difference between revisions

Revision as of 13:35, 31 July 2025

Binary Protocol Overview

This is a custom binary protocol designed for communication between device and a server. It is used in scenarios like vehicle tracking, remote diagnostics, OTA (Over The Air) updates, and device configuration. Each packet is structured with a defined header, payload, and checksum for integrity. The payload structure varies based on packet type and purpose.

Advantages of Binary Protocol

Compact (saves bandwidth)
Faster to transmit and parse
Suitable for constrained environments like cellular networks (2G/4G)

Comparison with Text Protocol

No delimiters like commas, newlines, or JSON/XML formatting
Cannot be inspected or parsed in a terminal without a decoder

Packet Sending Modes

Packet sending modes are based on the device data update rate source selected. The update rate is speed-based.

The device can be in any of the following modes:

Motion Mode (M)

Based on the activity of Accelerometer.

Halt Mode (H)

Based on the activity of Accelerometer.

Sleep Mode (S)

Occurs immediately after Ignition off.

@@ Line 19: / Line 19: @@
 === Motion Mode (M) ===
-If the speed of the vehicle is greater than 3 kmph, then the vehicle is in **motion mode**.
+Based on the activity of Accelerometer.
 === Halt Mode (H) ===
-If the speed is less than 3 kmph and the duration in this condition is greater than CUHT, the vehicle enters halt mode.
+Based on the activity of Accelerometer.
 === Sleep Mode (S) ===
-If the vehicle remains in halt mode and the duration exceeds CUST, it enters sleep mode.
+Occurs immediately after Ignition off.
 == Types of Packets & Packet Structure ==