¶ Project Task
¶ Main conditions
On command (SMS, USB, Internet or Bluetooth) device performs one of 3 actions:
- Activates gradual immobilization
- Activates instant immobilization
- Deactivates immobilization
¶ Additional conditions
- Instant immobilization can only work if a special password is entered in the command.
- When gradual immobilization starts, Output 2 activates buzzer alert.
¶ Program example
¶ Project Implementation
Output 1 and Output 2 must be configured as General purpose.
Normally closed relay is connected to Output 1. Using this relay, it is recommended to cut the Ignition circuit.
Buzzer with built-in generator is connected to Output 2 (optional), which will notify the driver that the gradual immobilization has begun.
Schematically, outputs operation when the gradual immobilization is turned on can be presented as follows:
To control the device, use the command *!CEVT p1,p2
p1- immobilization type:
0 - deactivate immobilization (password not needed)
1 - gradual immobilization (password not needed)
2 - instant immobilization (password required)p2- password for instant immobilization (password value in test program12345)
Command examples:
*!CEVT 1
*!CEVT 2,12345
*!CEVT 0
¶ Flowchart
General structure of the program looks simple - it consists of two successive Action blocks:
Initialization after switching on - block is needed to read the last known state of Output 1 in order to restore the immobilization status. If this block is not used, then the functionality will work, but after rebooting the device, Output 1 will be unblocked, regardless of whether the device was in the shutdown state or not.
Gradual engine immobilization - basic logic and operations for the required functionality to work.
¶ Initialization
Initialization after switching on action.
¶ Immobilization
Gradual engine immobilization
