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Digisparkを動かす

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Digispark

DigisparkはUSBに直接挿せるマイコン(ATTiny85). ソフトでUSB制御.
keyboardやmouseのエミュレートなど得意

購入

一応、ちゃんと使えてますが、クローンだとP5がリセットピンになっているようなので、そこだけ要注意です。
DigisparkのQ&Aフォーラムでは、クローンではP5がI/Oに使えずリセットになっているのが有ると書かれてました。

  • rev.3 というのはclone?!

設定

http://homemadegarbage.0t0.jp/digispark-1
http://digistump.com/wiki/digispark/tutorials/connecting

Digisparkへの書き込み

Digisparkにはリセットボタンがないため、書込みボタンをクリック後”Plug in device now…”と表記されてからDigisparkをUSBポートに差し込む。問題がなければ書き込みが開始する。
いちいち抜き差し面倒なのでダイソーのスイッチ付きUSBコネクタや延長コードがあると便利です。

  • HUB経由だと書き込みうまく動作せず.PC直結でうまく書き込めた.
  • ArduinoIDEなしで単体でつないでも認識繰り返すだけで正解
  • シリアルportは割り当てされないため未設定でよい.

詳細

Differences (from the Arduino) and limitations
http://digistump.com/wiki/digispark/quickref

Pin outs:

All pins can be used as Digital I/O
Pin 0 → I2C SDA, PWM (LED on Model B)
Pin 1 → PWM (LED on Model A) ★ 手元のDigisparkはModel A
Pin 2 → I2C SCK, Analog In
Pin 3 → Analog In (also used for USB+ when USB is in use)
Pin 4 → PWM, Analog (also used for USB- when USB is in use)
Pin 5 → Analog In

Many existing libraries will not work with the Digispark: For I2C devices check out the TinyWireM library, which makes it super simple to port an I2C based device library over to use with the Digispark.

sample

#include "DigiKeyboard.h"

void setup() {
  // don't need to set anything up to use DigiKeyboard
  pinMode(1  , OUTPUT);
}


void loop() {
  // this is generally not necessary but with some older systems it seems to
  // prevent missing the first character after a delay:
  DigiKeyboard.sendKeyStroke(0);

  // Type out this string letter by letter on the computer (assumes US-style
  // keyboard)
  digitalWrite(1, HIGH);  
  DigiKeyboard.println("ryu!");

  DigiKeyboard.delay(500);
  digitalWrite(1, LOW);  
  
  // It's better to use DigiKeyboard.delay() over the regular Arduino delay()
  // if doing keyboard stuff because it keeps talking to the computer to make
  // sure the computer knows the keyboard is alive and connected
  DigiKeyboard.delay(5000);
}
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