USB QR Code Raspberry Pi Barcode Scanner Module For Car Park Turnstile

USB QR Code Raspberry Pi Barcode Scanner Module For Car Park Turnstile

Communication Interfaces

The LV4200 can communicate with the host device via its TTL-232 interface. This Interface is applicable to most system architecture. For those requiring RS-232, a TTL-232 to RS-232 conversion circuit is needed.

The LV4200’s TTL-232 interface supports baud rates from 1200 bps to 115200 bps. It does not support hardware flow control its default settings are 96000 bps, 8 data bits, no parity check and 1 stop bit.

Besides, the LV1200 can also communicate with the host device via its USB interface ( optional )

A. USB HID-KBW : Based on USB connection, the engine’s translation is simulated as USB keyboard input. It works on a plug and pay basis and no driver is required;

B. USB COM Port Emulation : THe USB Interface on the host device is emulated as a serial port with the same data transmission and configuration as a real serial port. A driver is required.

C. USB HID-POS : It is based on HID with no need for custom driver and is way more efficient in communication than keyboard emulation and traditional RS-232 interface.

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Wood Zhang
Shenzhen Longview Technology Development Co., Ltd.
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