### Install NordicDFU with Cocoapods

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/README.md

Add the NordicDFU pod to your Podfile and run 'pod install'. Import the library using 'import NordicDFU'.

```ruby
target 'YourAppTargetName' do
    use_frameworks!
    pod 'NordicDFU'
end
```

```shell
pod install
```

--------------------------------

### Install Cocoapods Dependencies

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/README_OBJC.md

Run this command in your project directory after updating the Podfile to install the specified dependencies.

```bash
pod install
```

--------------------------------

### Install Xcode Command Line Tools

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/App/fastlane/README.md

Ensure you have the latest version of the Xcode command line tools installed before proceeding with fastlane installation.

```shell
xcode-select --install
```

--------------------------------

### Install NordicDFU with Carthage

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/README.md

Create a Cartfile with the repository URL and version, then run 'carthage update --use-xcframeworks --platform iOS'.

```shell
carthage update --use-xcframeworks --platform iOS
```

--------------------------------

### Initialize DFU Process

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/Library/Classes/Documentation.docc/Documentation.md

Use DFUServiceInitiator to set up and start the DFU process with a target peripheral and selected firmware. Delegates and logger can be optionally configured.

```swift
let initiator = DFUServiceInitiator()
// Optional:
// initiator.forceDfu = true/false // default false
// initiator.packetReceiptNotificationParameter = N // default is 12
initiator.logger = self // - to get log info
initiator.delegate = self // - to be informed about current state and errors 
initiator.progressDelegate = self // - to get progress updates
// initiator.peripheralSelector = ... // the default selector is used

let controller = initiator.with(firmware: selectedFirmware).start(target: peripheral)
```

--------------------------------

### Carthage Installation

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/Test App/Pods/ZIPFoundation/README.md

Integrate ZIPFoundation into your Xcode project using Carthage by adding it to your Cartfile.

```ogdl
github "weichsel/ZIPFoundation" ~> 0.9
```

--------------------------------

### CocoaPods Installation

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/Test App/Pods/ZIPFoundation/README.md

Add ZIPFoundation to your project's Podfile for integration using CocoaPods.

```ruby
source 'https://github.com/CocoaPods/Specs.git'
platform :ios, '10.0'
use_frameworks!
target '<Your Target Name>' do
    pod 'ZIPFoundation', '~> 0.9'
end
```

--------------------------------

### Swift Package Manager Installation

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/Test App/Pods/ZIPFoundation/README.md

Add ZIPFoundation as a dependency in your Package.swift file for Swift Package Manager integration.

```swift
// swift-tools-version:5.0
import PackageDescription
let package = Package(
    name: "<Your Product Name>",
    dependencies: [
		.package(url: "https://github.com/weichsel/ZIPFoundation.git", .upToNextMajor(from: "0.9.0"))
    ],
    targets: [
        .target(
		name: "<Your Target Name>",
		dependencies: ["ZIPFoundation"])
    ]
)
```

--------------------------------

### Install NordicDFU with Swift Package Manager

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/README.md

Add the NordicDFU library as a dependency in your Swift Package Manager configuration.

```swift
// swift-tools-version:5.6
import PackageDescription

let package = Package(
  name: "<Your Product Name>",
  dependencies: [
    .package(
      url: "https://github.com/NordicSemiconductor/IOS-DFU-Library", 
      .upToNextMajor(from: "<Desired Version>")
    )
  ],
  targets: [.target(name: "<Your Target Name>", dependencies: ["NordicDFU"])]
)
```

--------------------------------

### Import NordicDFU Library in Obj-C

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/README_OBJC.md

After successful installation and build, import the NordicDFU library into your Objective-C classes using the '@import' directive.

```objective-c
@import NordicDFU;
```

--------------------------------

### Run fastlane iOS Screenshots Action

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/App/fastlane/README.md

Execute the fastlane command to generate new localized screenshots for your iOS application. The `bundle exec` prefix is optional and depends on your project setup.

```shell
[bundle exec] fastlane ios screenshots
```

--------------------------------

### Get Current Tab Function

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/App/fastlane/screenshots/screenshots.html

Retrieves the index of the currently active tab. Defaults to tab 1 if no active tab is found.

```javascript
function getCurrentTab() { var i, tabs; tabs = document.getElementsByClassName("tabContent"); for (i = 0; i < tabs.length; i++) { if (tabs[i].style.display != "none") { return i + 1; } } return 1; // fallback }
```

--------------------------------

### Simulate Click Event

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/App/fastlane/screenshots/screenshots.html

Dispatches a click event on a given HTML element. This is used to programmatically trigger click actions, for example, when opening a default tab.

```javascript
function doClick(el) { if (document.createEvent) { var evObj = document.createEvent('MouseEvents', true); evObj.initMouseEvent("click", false, true, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null); el.dispatchEvent(evObj); } else if (document.createEventObject) { //IE var evObj = document.createEventObject(); el.fireEvent('onclick', evObj); } }
```

--------------------------------

### Create DFUFirmware Object from ZIP

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/Library/Classes/Documentation.docc/Documentation.md

Initialize a DFUFirmware object using a URL to a distribution packet (ZIP) file. This is the recommended method for updating firmware.

```swift
let selectedFirmware = try DFUFirmware(urlToZipFile: url)
```

--------------------------------

### Create DFUFirmware Object from BIN/HEX

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/Library/Classes/Documentation.docc/Documentation.md

Initialize a DFUFirmware object using URLs to BIN/HEX and optionally DAT files, specifying the firmware type. Use this for individual firmware components.

```swift
let selectedFirmware = try DFUFirmware(urlToBinOrHexFile: url, urlToDatFile: datUrl, type: .application)
```

--------------------------------

### Display ZIP Package Contents with nrfutil

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/Test App/Sources/Firmwares/Readme.md

Demonstrates how to use the nrfutil command-line tool to display the contents of a ZIP package, specifically decoding init packets.

```bash
nrfutil pkg display [file_name.zip]
```

--------------------------------

### Initialize Screenshot Display Logic

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/App/fastlane/screenshots/screenshots.html

Sets up the initial state and event listeners for screenshot interactions when the page loads. It hides tab titles and shows a sort menu, then triggers a click on the default tab.

```javascript
var overlay = document.getElementById('overlay'); var imageDisplay = document.getElementById('imageDisplay'); var imageInfo = document.getElementById('imageInfo'); var screenshotLink = document.getElementsByClassName('screenshotLink'); window.onload = setup(); function setup() { var i, menu, tabTitles; // Since JS is enabled, show sort menu and hide tab titles menu = document.getElementById("sortMenu"); menu.style.display = "block"; tabTitles = document.getElementsByClassName("tabTitle"); for (i = 0; i < tabTitles.length; i++) { tabTitles[i].style.display = "none"; } doClick(document.getElementById("defaultTab")); }
```

--------------------------------

### Add Entry from File

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/Test App/Pods/ZIPFoundation/README.md

Adds an entry to a ZIP archive from an existing file using a relative path and base URL. Ensure the archive is opened in `.update` mode.

```swift
let fileManager = FileManager()
let currentWorkingPath = fileManager.currentDirectoryPath
var archiveURL = URL(fileURLWithPath: currentWorkingPath)
archiveURL.appendPathComponent("archive.zip")
guard let archive = Archive(url: archiveURL, accessMode: .update) else  {
    return
}
var fileURL = URL(fileURLWithPath: currentWorkingPath)
fileURL.appendPathComponent("file.txt")
do {
    try archive.addEntry(with: fileURL.lastPathComponent, relativeTo: fileURL.deletingLastPathComponent())
} catch {
    print("Adding entry to ZIP archive failed with error:\(error)")
}
```

--------------------------------

### Create a New Archive

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/Test App/Pods/ZIPFoundation/README.md

Creates a new, empty ZIP archive at the specified file URL using the .create access mode.

```swift
let currentWorkingPath = fileManager.currentDirectoryPath
var archiveURL = URL(fileURLWithPath: currentWorkingPath)
archiveURL.appendPathComponent("newArchive.zip")
guard let archive = Archive(url: archiveURL, accessMode: .create) else  {
    return
}
```

--------------------------------

### SDK Version Formatting

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/Test App/Sources/Firmwares/Readme.md

Explains how the SDK version is represented in the DFU device name, without a decimal point.

```text
141 = SDK 14.1, 08 = SDK 8, 061 = SDK 6.1
```

--------------------------------

### Cocoapods Podfile Configuration for Obj-C

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/README_OBJC.md

Configure your Podfile to include the NordicDFU library for your Objective-C application target. Ensure 'use_frameworks!' is set.

```ruby
target 'YourAppTargetName' do
use_frameworks!
pod 'NordicDFU'
end
```

--------------------------------

### Create In-Memory Archive

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/Test App/Pods/ZIPFoundation/README.md

Creates a ZIP archive that resides entirely in memory. This is useful for dynamically generating archives to be sent over a network without disk I/O.

```swift
let string = "Some string!"
guard let archive = Archive(accessMode: .create),
        let data = string.data(using: .utf8) else { return }
    try? archive.addEntry(with: "inMemory.txt", type: .file, uncompressedSize: UInt64(data.count), bufferSize: 4, provider: { (position, size) -> Data in
        return data.subdata(in: position..<position+size)
    })
let archiveData = archive.data
```

--------------------------------

### Add Entry from Memory

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/Test App/Pods/ZIPFoundation/README.md

Adds an entry to a ZIP archive from in-memory data using a provider closure. This is useful for creating archives without writing to disk.

```swift
let string = "abcdefghijkl"
guard let data = string.data(using: .utf8) else { return }
try? archive.addEntry(with: "fromMemory.txt", type: .file, uncompressedSize: UInt64(data.count), bufferSize: 4, provider: { (position, size) -> Data in
    // This will be called until `data` is exhausted (3x in this case).
    return data.subdata(in: position..<position+size)
})
```

--------------------------------

### Unzip an Archive

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/Test App/Pods/ZIPFoundation/README.md

Unzips an archive to a specified destination directory. The destination directory will be created if it doesn't exist.

```swift
let fileManager = FileManager()
let currentWorkingPath = fileManager.currentDirectoryPath
var sourceURL = URL(fileURLWithPath: currentWorkingPath)
sourceURL.appendPathComponent("archive.zip")
var destinationURL = URL(fileURLWithPath: currentWorkingPath)
destinationURL.appendPathComponent("directory")
do {
    try fileManager.createDirectory(at: destinationURL, withIntermediateDirectories: true, attributes: nil)
    try fileManager.unzipItem(at: sourceURL, to: destinationURL)
} catch {
    print("Extraction of ZIP archive failed with error:\(error)")
}
```

--------------------------------

### DFU Device Naming Convention

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/Test App/Sources/Firmwares/Readme.md

Explains the format of the device name advertised by the DFU target, which includes Board ID, Mode, and SDK Version.

```text
DFU<board-id><mode><version>
```

--------------------------------

### Open Tab Functionality

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/App/fastlane/screenshots/screenshots.html

Handles switching between different tabs. It hides all tab content, removes the 'active' class from all tab links, and then displays the content of the selected tab and marks its link as active.

```javascript
function openTab(evt, tabName) { var i, tabContent, tabLinks; tabs = document.getElementsByClassName("tabContent"); for (i = 0; i < tabs.length; i++) { tabs[i].style.display = "none"; } tabLinks = document.getElementsByClassName("tabLink"); for (i = 0; i < tabLinks.length; i++) { tabLinks[i].className = tabLinks[i].className.replace(" active", ""); } document.getElementById(tabName).style.display = "block"; evt.currentTarget.className += " active"; }
```

--------------------------------

### Image Display Click Listener

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/App/fastlane/screenshots/screenshots.html

Handles clicks on the displayed image within the overlay. It attempts to navigate to the next or first screenshot in the current tab based on the image's counter data attribute.

```javascript
imageDisplay.addEventListener('click', function(e) { e.stopPropagation(); // ! overlay.style.display = "none"; img_tab = parseInt(getCurrentTab()); img_counter = parseInt(e.target.dataset.counter) + 1; try { link = document.body.querySelector('img[data-tab="'+img_tab+'"] [data-counter="'+img_counter+'"] ').parentNode; } catch (e) { try { link = document.body.querySelector('img[data-tab="'+img_tab+'"] [data-counter="0"] ').parentNode; } catch (e) { return false; } } doClick(link); });
```

--------------------------------

### Extract Entry with Consumer

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/Test App/Pods/ZIPFoundation/README.md

Extracts the contents of a ZIP entry using a closure-based consumer. The consumer is called repeatedly with chunks of data until the entry is fully read.

```swift
try archive.extract(entry, consumer: { (data) in
    print(data.count)
})
```

--------------------------------

### Access and Extract Individual Entry from Archive

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/Test App/Pods/ZIPFoundation/README.md

Accesses a specific entry within a ZIP archive by its relative path and extracts it to a destination URL.

```swift
let fileManager = FileManager()
let currentWorkingPath = fileManager.currentDirectoryPath
var archiveURL = URL(fileURLWithPath: currentWorkingPath)
archiveURL.appendPathComponent("archive.zip")
guard let archive = Archive(url: archiveURL, accessMode: .read) else  {
    return
}
guard let entry = archive["file.txt"] else {
    return
}
var destinationURL = URL(fileURLWithPath: currentWorkingPath)
destinationURL.appendPathComponent("out.txt")
do {
    try archive.extract(entry, to: destinationURL)
} catch {
    print("Extracting entry from archive failed with error:\(error)")
}
```

--------------------------------

### Zip a Single File

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/Test App/Pods/ZIPFoundation/README.md

Zips a single file to a destination URL. Ensure the source and destination URLs are valid.

```swift
let fileManager = FileManager()
let currentWorkingPath = fileManager.currentDirectoryPath
var sourceURL = URL(fileURLPathComponent: currentWorkingPath)
sourceURL.appendPathComponent("file.txt")
var destinationURL = URL(fileURLWithPath: currentWorkingPath)
destinationURL.appendPathComponent("archive.zip")
do {
    try fileManager.zipItem(at: sourceURL, to: destinationURL)
} catch {
    print("Creation of ZIP archive failed with error:\(error)")
}
```

--------------------------------

### Screenshot Click Event Listener

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/App/fastlane/screenshots/screenshots.html

Attaches a click event listener to elements with the class 'screenshotLink'. When clicked, it prevents the default action, determines the target image, and adjusts the display size of the image preview based on viewport dimensions before showing an overlay.

```javascript
for (index = 0; index < screenshotLink.length; ++index) { screenshotLink[index].addEventListener('click', function(e) { e.preventDefault(); var img = e.target; if (e.target.tagName == 'A') { img = e.target.children[0]; } // beautify var tmpImg = new Image(); tmpImg.src = img.src; imageDisplay.style.height = 'auto'; imageDisplay.style.width = 'auto'; imageDisplay.style.paddingTop = 0; if (window.innerHeight < tmpImg.height) { imageDisplay.style.height = document.documentElement.clientHeight+'px'; } else if (window.innerWidth < tmpImg.width) { imageDisplay.style.width = document.documentElement.clientWidth;+'px'; } else { imageDisplay.style.paddingTop = parseInt((window.innerHeight - tmpImg.height) / 2)+'px'; } imageDisplay.src = img.src; imageDisplay.alt = img.alt; imageDisplay.dataset.counter = img.dataset.counter; imageInfo.innerHTML = '<h3>'+img.alt+'</h3>'; imageInfo.innerHTML += decodeURI(img.src.split("/").pop()); imageInfo.innerHTML += '<br />'+tmpImg.height+'&times;'+tmpImg.width+'px'; overlay.style.display = "block"; }); }
```

--------------------------------

### Keyboard Input Handling

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/App/fastlane/screenshots/screenshots.html

Processes keyboard events, specifically handling the Escape key to close the overlay, and Page Down, Right Arrow, or specific numeric keys to navigate to the next screenshot.

```javascript
function keyPressed(e) { e = e || window.event; var charCode = e.keyCode || e.which; switch(charCode) { case 27: // Esc overlay.style.display = "none"; break; case 34: // Page Down case 39: // Right arrow case 54: // Keypad right case 76: // l case 102: // Keypad right e.preventDefault(); doClick(imageDisplay); break; ca
```

--------------------------------

### Keyboard Event Listener for Image Display

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/App/fastlane/screenshots/screenshots.html

This JavaScript code sets up a keyboard event listener to modify a counter associated with an image display element and trigger a click action. It handles specific key codes for navigation or control.

```javascript
document.getElementById('imageDisplay').dataset.counter -= 2; // hacky
doClick(imageDisplay);
break;
}
};
document.body.addEventListener('keydown', keyPressed);
```

--------------------------------

### Overlay Click Listener

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/App/fastlane/screenshots/screenshots.html

Hides the screenshot overlay when the overlay itself is clicked.

```javascript
overlay.addEventListener('click', function(e) { overlay.style.display = "none"; })
```

--------------------------------

### Remove Entry from Archive

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/Test App/Pods/ZIPFoundation/README.md

Removes a specific entry from a ZIP archive. Requires a reference to the entry object obtained by accessing the archive.

```swift
guard let entry = archive["file.txt"] else {
    return
}
do {
    try archive.remove(entry)
} catch {
    print("Removing entry from ZIP archive failed with error:\(error)")
}
```

--------------------------------

### Board ID Mapping

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/Test App/Sources/Firmwares/Readme.md

Defines the mapping between numerical Board IDs and the corresponding nRF chip models.

```text
1 = nRF51
2 = nRF52832
3 = nRF52840
```

--------------------------------

### DFU Mode Mapping

Source: https://github.com/nordicsemiconductor/ios-dfu-library/blob/main/Test App/Sources/Firmwares/Readme.md

Defines the mapping between the mode character and its meaning in the DFU device name.

```text
A = Application
B = Bootloader
```

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