API description

API Overview

 This document provides an introduction to the C APIs. C API is the lowest API, it provided by the POS driver, it packaged all the API implement in a so file, named "libUnionpayCloudPos.so".
 The third app should open this so file then call this API in its' C source code according as the corresponding head file.

Print

 Introduce the API of the printer device.The head file name is printer_interface.h.The POS printer device can print text, picture and ESC Commands.

Contactless reader

 Introduce the  API of the contactless reader device. The contactless reader supports CPU Card, Mifare Card, E-Wallet Card, and also it can support some card emulation, includes Apply Pay.

Cash Drawer

 Introduce the API about hwo to interaction with the external cash Drawder device.

Fingerprint

 Introduce the API of the fingerprinter device.

HSM

 Introduce the API of the HSM module.

HDMI

Introduce the API about how to interaction with the HDMIdevice.

LED

Introduce the API of the LED device.

MSR reader

 Introduce the API of the MSR reader device.

PINPAD

 Introduce the API of the PINPAD device.

Secondary display

Introduce the API about hwo to interaction with the external secondary display device.

Serial Port

Introduce the API of the serial port device.

Smart Card reader

 Introduce the API of the smart card reader device. The smart card reader supports IC card, PSAM card.

Signature

 Introduce the API of the signature device.