SendCancelCommand

The POS device calls the SendCancelCommand API to send a command to the BlueTap device to disable the NFC link.

Method signature

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/**
 * Send cancel command to the BlueTap device
 */
ResultCode SendCancelCommand(CancelCommand cancelCommand);

Request parameter

Item	Type	Description	Required
cancelCommand	CancelCommand	The command sent to the BlueTap device to disable the NFC link.	M

CancelCommand

Item	Type	Length	Description	Required
OrderId	String	16	The order ID created by the POS device to identify an order.	O

Response parameter

Item	Type	Description	Required
/	ResultCode	The result code that indicates the result of the command sending. For more information about the result code, see the ResultCode section.	M

ResultCode

ResultCode	Description
`SUCCESS`	Success.
`DEVICE_DISCONNECTED`	The BlueTap device is disconnected.
`PARAM_ILLEGAL`	The parameter values are invalid.
`PROCESS_FAIL`	Failed to send the command.
`UNKNOWN_EXCEPTION`	System exception.

Sample

C#

This following sample shows how to use the SendCancelCommand API in C#.

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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Windows.Forms;
using BluetapLib;

namespace BluetapTest
{
    static class Program
    {
        private static void Main(string[] args)
        {
            TinyCommand tinyCommand = new TinyCommand();
            /* Send CancelCommand */
            CancelCommand cancelCommand = new CancelCommand();
            result = tinyCommand.SendCancelCommand(cancelCommand);
        }
    }
}

Python

This following sample shows how to use the SendCancelCommand API in Python.

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import hid
import bluetaplib

tinyCommand = bluetaplib.TinyCommand()
cancelCommand = bluetaplib.CancelCommand()
tinyCommand.SendCancelCommand(cancelCommand)

Note: Contact your Alipay+ Solution Architect to obtain the BluetapLib.dll file.

Python code requires hid and bluetaplib to execute. Use the command below in terminal to install them.

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pip install hidapi
pip install bluetaplib-1.0.0-py3-none-any.whl

Note: Contact your Alipay+ Solution Architect to obtain the bluetaplib-x.x.x-py3-none-any.whl file.