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SwiftyPi
Taking Swift to the NEXT frontier
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Who am I?
Informatics Engineer
Senior iOS Developer @
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Agenda
→ Swift in Embedded Systems
→ How to setup your RaspberryPi
→ Adding Swift to your Pi
→ Swift with Pins
→ Demo
→ Lessons learned
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Swift in Embedded Systems
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Evolution of Swift
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Enter... the Raspberry Pi
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How to setup your RaspberryPi
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Choosing the Operating System
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⚠
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Adding Swift to your Pi
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!
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Setting up Swift
→ Download the Swift 3.1.1 binaries
→ Check the Swift version using
swift —-version
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Swift with pins
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How to lay out our circuit?
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⚠
→ To verify your connection use sudo apt-get install
wiringpi
→ To setup the pin as an output we do gpio mode 13
out
→ To switch it on we do gpio write 13 1
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Disclaimer
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SwiftyGPIO
// swift-tools-version:3.1
import PackageDescription
let package = Package(
name: "TestProject",
dependencies: [
.Package(url: "https://github.com/uraimo/SwiftyGPIO.git", majorVersion: 0)
]
)
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Setting up the Led
import SwiftyGPIO
import Foundation
class PinService: NSObject {
private let gpios: [GPIOName: GPIO]
private let selectedPin: GPIO
override init() {
self.gpios = SwiftyGPIO.GPIOs(for: .RaspberryPi3)
guard let pin = gpios[.P27] else {
fatalError("Unable to initialise the GPIO pin")
}
self.selectedPin = pin
self.selectedPin.direction = .OUT
}
}
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Switching ON/OFF
func switchLed(status: String) -> Int {
if status == "ON" {
selectedPin.value = 1
} else {
selectedPin.value = 0
}
return selectedPin.value
}
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Led on/off
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Berlin Train System
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Setting up Vapor
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Demo !
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What have we done?
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Lessons learned
→ You can connect your RPi to your computer and
share the internet via Ethernet cable.
RPiΨπЀϡϲЄό婲͚ͽ̵EthernetξЄϣϸΨͺ
͡ͼαЀόЄϚϐϕوํͽͣΡΞ͜͵̶
→ The RaspberryPi is constrained to Swift 3.1.1 because
there is no ARMv7 support for Swift 4
Swift 4΄ARMv7ςϪЄϕ͚͢͵Η̵RaspberryPi΅
Swift 3.1.1ګᴴͫͼ͚Ρ
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Lessons learned part II
→ If the led does not turn on, CHECK YOUR
CONNECTION
LED͢ᅩᅌ͚ͭ;ͣ΅̵ള姆Ψ嘦扯ͭͼͥͶ͚ͫ
→ Try not to mix the physical PIN number and the
GPIO number
ᇔቘPINኾݩ;GPIOኾݩΨႰͲ͚Ξͭ͜ͼͥ
Ͷ͚ͫ
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Thank you!
@katecastellano
GitHub: https://github.com/kcastellano/
SwiftyPi