kawashimaken/steps_to_get_the_badge_ready.md

## steps_to_get_the_badge_ready.md

      
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    ●Shared Steps

install drivers

https://github.com/digistump/DigistumpArduino/releases
Download Tool

Download the latest ARVDude program (for Windows, MacOS or Linux)
https://github.com/avrdudes/avrdude
For Windows user:

download avrdude-v8.1-windows-x64.zip
unzip to anywhere you like
open terminal at the current folder containing your ardude files (avrdude.ext)

Download bootloader

download t85_default.hex from github.com/micronucleus/micronucleus/tree/master/firmware/releases
Put the t85_default.hex file to the same folder of your avrdude folder
Connect Arduino with ATTiny85

Connect Arduino with Badge pins.
Arduino UNO              Badge(ATtiny85)
D10            <--- --->  RESET（PB5）
D11            <--- --->  MOSI（PB0）
D12            <--- --->  MISO（PB1）
D13            <--- --->  SCK（PB2）
GND            <--- --->  GND
5V             <--- --->  VCC

Also refer to this vedio for some connection details : https://www.youtube.com/watch?v=RlscDz5JCcI
Don't forget the 10uF capacitor between Arduino RESET and GND!
Prepare Arduino UNO

Use one Arduino UNO, as an ISP writer. (see the programming part)
https://www.youtube.com/watch?v=B5HT5IKcprE&t=402s

Remove 10uF capacitor
Burning the Arduino ISP program to your Arduino UNO
Insert 10uF capacitor
Set the programmer to Arduino as ISP from your tool menu.

Find your com port

In my case it is COM10, change according to your environment in the following commands.
Burn bootloader
In command terminal
(In my case, I use Windows)
●Pattern 1 : use the board just like a DigiSpark ATTiny85 board

use micronucleus bootloader, enable the usb to upload program (when operating at 5V)
burn the bootloader first

./avrdude -v -P COM10 -b 19200  -c arduino -p attiny85  -Uflash:w:t85_default.hex:i -U lfuse:w:0xe1:m -U hfuse:w:0xdd:m -U efuse:w:0xfe:m  

(COM10, change this according to your environment)
remove the wires

Disconnect all the wires for the previous steps.
Steps are as shown in https://www.youtube.com/watch?v=m6aqmjp6AFM
Add board manager to Arduino IDE

Add the board support to the board manager in your Arduino IDE. add the following to your board manager URL in preference
http://drazzy.com/package_drazzy.com_index.json

Then
install the board from the board manager "ATTinyCore"
for details, see https://www.youtube.com/watch?v=m6aqmjp6AFM
choose the board as ATTiny85(micronucleus/DigiSpark) , just use it as a DigiSpark ATTiny85 board

Flash program to your badge

Use USB to connect to your PC, and flash the above program.

disconnect the board, compile and upload

The program (or any other program):
// 
const int ledPins[] = {0, 1, 2, 3, 4};  // PB0〜PB4 に相当

void setup() {
  // 
  for (int i = 0; i < 5; i++) {
    pinMode(ledPins[i], OUTPUT);
  }
}

void loop() {
  // 
  for (int i = 0; i < 5; i++) {
    digitalWrite(ledPins[i], HIGH);  // LED ON
    delay(200);
    digitalWrite(ledPins[i], LOW);   // LED OFF
    delay(200);
  }
}


get the prompt "Please plug in the device (will time out in 60 seconds) ..."
connect the badge to usb
start uploading the program
done!

●Pattern 2 : for 3V coin battery operation

Use an Arduino UNO to upload program via Arduino ISP.
When using this method, you need to upload your program this way, every time, since the bootloader is not functioning at this mode.
compile the program


compile your program just as you compile any other program at  Arduino IDE

find the .hex file


find the .hex file. you can find the log like this, after compiling

Compiling core...
Using precompiled core: C:\Users\demo\AppData\Local\Temp\arduino_cache_671532\core\core_4ef166371ad89eca6e92285427e7dab3.a
Linking everything together...
"C:\\Users\\demo\\Documents\\ArduinoData\\packages\\arduino\\tools\\avr-gcc\\7.3.0-atmel3.6.1-arduino7/bin/avr-gcc" -Wall -Wextra -Os -g -flto -fuse-linker-plugin -Wl,--gc-sections -mmcu=attiny85 -o "C:\\Users\\demo\\AppData\\Local\\Temp\\arduino_build_599010/simple.ino.elf" "C:\\Users\\demo\\AppData\\Local\\Temp\\arduino_build_599010\\sketch\\simple.ino.cpp.o" "C:\\Users\\demo\\AppData\\Local\\Temp\\arduino_build_599010\\libraries\\tinyNeoPixel_Static\\tinyNeoPixel_Static.cpp.o" "C:\\Users\\demo\\AppData\\Local\\Temp\\arduino_build_599010/..\\arduino_cache_671532\\core\\core_4ef166371ad89eca6e92285427e7dab3.a" "-LC:\\Users\\demo\\AppData\\Local\\Temp\\arduino_build_599010" -lm
"C:\\Users\\demo\\Documents\\ArduinoData\\packages\\arduino\\tools\\avr-gcc\\7.3.0-atmel3.6.1-arduino7/bin/avr-objcopy" -O ihex -j .eeprom --set-section-flags=.eeprom=alloc,load --no-change-warnings --change-section-lma .eeprom=0 "C:\\Users\\demo\\AppData\\Local\\Temp\\arduino_build_599010/simple.ino.elf" "C:\\Users\\demo\\AppData\\Local\\Temp\\arduino_build_599010/simple.ino.eep"
"C:\\Users\\demo\\Documents\\ArduinoData\\packages\\arduino\\tools\\avr-gcc\\7.3.0-atmel3.6.1-arduino7/bin/avr-objcopy" -O ihex -R .eeprom "C:\\Users\\demo\\AppData\\Local\\Temp\\arduino_build_599010/simple.ino.elf" "C:\\Users\\demo\\AppData\\Local\\Temp\\arduino_build_599010/simple.ino.hex"

notice there is a line with file extension .hex, this is the file you need. (simple.ino.hex)
burn the program

./avrdude -v -P COM10 -b 19200  -c arduino -p attiny85  -Uflash:w:your_program_compiled.hex:i -U lfuse:w:0x62:m -U hfuse:w:0xdf:m -U efuse:w:0xff:m  

(COM10, change this according to your environment)

use Arduino UNO as an ISP programmer to upload the program to the badge.
https://www.youtube.com/watch?v=BYlpzJzaDWs

References

ATTiny85 datasheet: https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ProductDocuments/DataSheets/Atmel-7598_Automotive-Microcontrollers-ATtiny25-45-85_Datasheet.pdf
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