Read toilet sensors on Raspberry Pi

toilets.go

// Demo:
// 
//   $ sudo ./pins
//   Unable to select a suitable driver for this board.
//   Linux itoilet 3.12.28+ #709 PREEMPT Mon Sep 8 15:28:00 BST 2014 armv6l GNU/Linux
//
//   toilet A: 0
//   toilet B: 0
//
// BTW hwio has a terrible public API, brb.

package main

import (
        "fmt"
        "log"
        "os"

        "github.com/mrmorphic/hwio"
)

func main() {
        if err := run(); err != nil {
                log.Fatalln("Error:", err)
        }
}

func run() error {
        hwio.SetDriver(new(hwio.RaspberryPiDTDriver))
        defer hwio.CloseAll()

        // Pin 22 = "gpio25"
        toiletA, err := hwio.GetPinWithMode("gpio25", hwio.INPUT)
        if err != nil {
                return err
        }

        // Pin 24 = "gpio8"
        toiletB, err := hwio.GetPinWithMode("gpio8", hwio.INPUT)
        if err != nil {
                return err
        }

        valueA, err := hwio.DigitalRead(toiletA)
        if err != nil {
                return err
        }

        valueB, err := hwio.DigitalRead(toiletB)
        if err != nil {
                return err
        }

        fmt.Printf("toilet A: %v\n", valueA)
        fmt.Printf("toilet B: %v\n", valueB)
        return nil
}