Update README

This commit is contained in:
Martin Endler
2017-01-26 19:46:37 +01:00
parent d884b34714
commit 89aa567f4e
2 changed files with 62 additions and 8 deletions

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@@ -7,6 +7,36 @@ Bindings over pcsclite to access Smart Cards. Starting with version **0.4.0** it
> **Looking for library to work easy with NFC tags?**
take a look at [nfc-pcsc](https://github.com/pokusew/nfc-pcsc) which offers easy to use high level API for detecting / reading and writing NFC tags and cards
## Content
<!-- START doctoc generated TOC please keep comment here to allow auto update -->
<!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
- [Installation](#installation)
- [Example](#example)
- [Behavior on different OS](#behavior-on-different-os)
- [API](#api)
- [Class: PCSCLite](#class-pcsclite)
- [Event: 'error'](#event--error)
- [Event: 'reader'](#event--reader)
- [pcsclite.close()](#pcscliteclose)
- [Class: CardReader](#class-cardreader)
- [Event: 'error'](#event--error-1)
- [Event: 'end'](#event--end)
- [Event: 'status'](#event--status)
- [reader.connect([options], callback)](#readerconnectoptions-callback)
- [reader.disconnect(disposition, callback)](#readerdisconnectdisposition-callback)
- [reader.transmit(input, res_len, protocol, callback)](#readertransmitinput-res_len-protocol-callback)
- [reader.control(input, control_code, res_len, callback)](#readercontrolinput-control_code-res_len-callback)
- [reader.close()](#readerclose)
- [FAQ](#faq)
- [Can I use this library in my Electron app?](#can-i-use-this-library-in-my-electron-app)
<!-- END doctoc generated TOC please keep comment here to allow auto update -->
## Installation
In order to install the package you need to **have installed in the system the
@@ -47,7 +77,7 @@ pcsc.on('reader', function(reader) {
reader.on('status', function(status) {
console.log('Status(', this.name, '):', status);
/* check what has changed */
var changes = this.state ^ status.state;
const changes = this.state ^ status.state;
if (changes) {
if ((changes & this.SCARD_STATE_EMPTY) && (status.state & this.SCARD_STATE_EMPTY)) {
console.log("card removed");/* card removed */
@@ -90,6 +120,11 @@ pcsc.on('error', function(err) {
});
```
## Behavior on different OS
TODO document
## API
### Class: PCSCLite
@@ -140,7 +175,8 @@ Emitted whenever the status of the reader changes.
* *error* `Error`
* *protocol* `Number` Established protocol to this connection.
Wrapper around [`SCardConnect`](http://pcsclite.alioth.debian.org/pcsc-lite/node12.html). Establishes a connection to the reader.
Wrapper around [`SCardConnect`](https://pcsclite.alioth.debian.org/api/group__API.html#ga4e515829752e0a8dbc4d630696a8d6a5).
Establishes a connection to the reader.
#### reader.disconnect(disposition, callback)
@@ -148,7 +184,8 @@ Wrapper around [`SCardConnect`](http://pcsclite.alioth.debian.org/pcsc-lite/node
* *callback* `Function` called when disconnection operation ends
* *error* `Error`
Wrapper around [`SCardDisconnect`](http://pcsclite.alioth.debian.org/pcsc-lite/node14.html). Terminates a connection to the reader.
Wrapper around [`SCardDisconnect`](https://pcsclite.alioth.debian.org/api/group__API.html#ga4be198045c73ec0deb79e66c0ca1738a).
Terminates a connection to the reader.
#### reader.transmit(input, res_len, protocol, callback)
@@ -159,7 +196,8 @@ Wrapper around [`SCardDisconnect`](http://pcsclite.alioth.debian.org/pcsc-lite/n
* *error* `Error`
* *output* `Buffer`
Wrapper around [`SCardTransmit`](http://pcsclite.alioth.debian.org/pcsc-lite/node17.html). Sends an APDU to the smart card contained in the reader connected to.
Wrapper around [`SCardTransmit`](https://pcsclite.alioth.debian.org/api/group__API.html#ga9a2d77242a271310269065e64633ab99).
Sends an APDU to the smart card contained in the reader connected to.
#### reader.control(input, control_code, res_len, callback)
@@ -170,8 +208,24 @@ Wrapper around [`SCardTransmit`](http://pcsclite.alioth.debian.org/pcsc-lite/nod
* *error* `Error`
* *output* `Buffer`
Wrapper around [`SCardControl`](http://pcsclite.alioth.debian.org/pcsc-lite/node18.html). Sends a command directly to the IFD Handler (reader driver) to be processed by the reader.
Wrapper around [`SCardControl`](https://pcsclite.alioth.debian.org/api/group__API.html#gac3454d4657110fd7f753b2d3d8f4e32f).
Sends a command directly to the IFD Handler (reader driver) to be processed by the reader.
#### reader.close()
It frees the resources associated with this CardReader instance. At a low level it calls [`SCardCancel`](http://pcsclite.alioth.debian.org/pcsc-lite/node21.html) so it stops watching for the reader status changes.
It frees the resources associated with this CardReader instance.
At a low level it calls [`SCardCancel`](https://pcsclite.alioth.debian.org/api/group__API.html#gaacbbc0c6d6c0cbbeb4f4debf6fbeeee6) so it stops watching for the reader status changes.
## FAQ
### Can I use this library in my [Electron](http://electron.atom.io/) app?
Yes, you can! It works well.
But please read carefully [Using Native Node Modules](http://electron.atom.io/docs/tutorial/using-native-node-modules/) guide in Electron documentation to fully understand the problematic.
**Note**, that because of Node Native Modules, you must build your app on target platform (you must run Windows build on Windows machine, etc.).
You can use CI/CD server to build your app for certain platforms.
For Windows, I recommend you to use [AppVeyor](https://appveyor.com/).
For macOS and Linux build, there are plenty of services to choose from, for example [CircleCI](https://circleci.com/), [Travis CI](https://travis-ci.com/) [CodeShip](https://codeship.com/).

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@@ -16,7 +16,7 @@ pcsc.on('reader', function (reader) {
reader.on('status', function (status) {
console.log('Status(', this.name, '):', status);
/* check what has changed */
var changes = this.state ^ status.state;
const changes = this.state ^ status.state;
if (changes) {
if ((changes & this.SCARD_STATE_EMPTY) && (status.state & this.SCARD_STATE_EMPTY)) {
console.log("card removed");
@@ -31,7 +31,7 @@ pcsc.on('reader', function (reader) {
} else if ((changes & this.SCARD_STATE_PRESENT) && (status.state & this.SCARD_STATE_PRESENT)) {
console.log("card inserted");
/* card inserted */
reader.connect({share_mode: this.SCARD_SHARE_SHARED}, function (err, protocol) {
reader.connect({ share_mode: this.SCARD_SHARE_SHARED }, function (err, protocol) {
if (err) {
console.log(err);
} else {