ATTiny13A Arduino

ATTiny is ... well, tiny. Not very suitable to programed it on arduino. Nevertheless, I decided to do it.

Create ‘hardware’ folder in Arduino sketch folder, unzip the file.

Download the Smeezekitty core, http://sourceforge.net/projects/ard-core13/files/latest/download

Unzip it, copy the files, paste in …/hardware/attiny/avr/variants/core13/ (if folder didn’t exist, create it)

edit the boards.txt files at

…/hardware/attiny/avr/boards.txt

boards.txt

menu.cpu=Processor
menu.clock=Clock
attiny.name=ATtiny
attiny.bootloader.tool=arduino:avrdude
attiny.bootloader.unlock_bits=0xff
attiny.bootloader.lock_bits=0xff
attiny.build.core=arduino:arduino
attiny.build.board=attiny
attiny.upload.tool=arduino:avrdude
#attiny.upload.tool=usbasp

#################################################
attiny.menu.cpu.attiny13=ATtiny13
attiny.menu.cpu.attiny13.upload.maximum_size=1024
attiny.menu.cpu.attiny13.build.mcu=attiny13
attiny.menu.cpu.attiny13.build.variant=core13

attiny.menu.clock.internal96=9.6MHz (internal)
attiny.menu.clock.internal96.bootloader.low_fuses=0x7A
attiny.menu.clock.internal96.bootloader.high_fuses=0xff
attiny.menu.clock.internal96.build.f_cpu=9600000L

################################################

attiny.menu.clock.internal48=4.8MHz (internal)
attiny.menu.clock.internal48.bootloader.low_fuses=0x79
attiny.menu.clock.internal48.bootloader.high_fuses=0xff
attiny.menu.clock.internal48.build.f_cpu=4800000L
################################################

avrdude give the error because my downloader need -B4 option (I installed new bootloader, flash it, remove auto sck, so the avrdude warning gone)

In order to be able to upload it to ATTiny13A, we have to edit the file.

Macintosh HD/Applications/Arduino/Contents/Java/Hardware/arduino/avr/programmers.txt

edit it

usbasp.name=USBasp
usbasp.communication=usb
usbasp.protocol=usbasp
usbasp.program.protocol=usbasp
usbasp.program.tool=avrdude
usbasp.program.extra_params=-Pusb -B4

start arduino IDE

it give firewall warning

so 

undo the edit or reinstall the arduino

create programmers.txt in the same folder with  boards.txt

usbasp.name=USBaspN
usbasp.communication=usb
usbasp.protocol=usbasp
usbasp.program.protocol=usbasp
usbasp.program.tool=avrdude
usbasp.program.extra_params=-Pusb -B4

we use USBaspN 

Blink without delay,  

const int ledPin =  1;      // the number of the LED pin
int ledState = LOW;             // ledState used to set the LED
unsigned long previousMillis = 0;        // will store last time LED was updated
const long interval = 1000;           // interval at which to blink (milliseconds)
void setup() {
  pinMode(ledPin, OUTPUT);
}

void loop()
{
  unsigned long currentMillis = millis();
  if(currentMillis - previousMillis >= interval) {
    previousMillis = currentMillis;   
    if (ledState == LOW)
      ledState = HIGH;
    else
      ledState = LOW;
    digitalWrite(ledPin, ledState);
  }
}

For some reason, the delay on LED seem longer than 1 s (but it worked).  Maybe it’s the same reason the blink example (with delay.) didn’t work

. .

Android Studio on My OS X Yosemite

Well, a picture is worth thousand words.

So, here the millions words for you, :)

Previously I went to Android website to install Eclipse with ADT. I installed this Android Studio instead; on my Macbook Air wit OS X Yosemite. 

Oh yeah, you maybe encountered the error about JDK 7. I have to manually point to my JDK 7 installation.

My FreeBSD Installation LeftOver

Didn't really remember the chronology. It use Parallel Desktop. It use VirtualBox too.

Tak ada yang berbeda antara FreeBSD ini dengan yang lain, jika telah terbiasa dengan Linux atau Unix lain, bahkan Apple OS X, maka kita dapat melihat bahwa Beastie ini (nama logo BSD) sama dengan semua sistem itu. 

The Rock Solid UNIX. :)

Buttered Black Coffee

   

Alfa suka teh mentega kambing gunung.

Penasaran, tapi gak suka teh, dan meski bukan yak, di sini ada banyak kambing, tapi gak ada mentega dari susu kambing. 

Jadi, teh diganti kopi, dan mentega nak diganti dengan mentega roti. 

Enak, bagiku, tapi tidak kusarankan tuk meniru. 

Aku yakin po cha tidak seperti ini. 

:)

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Serial Communication at ATTiny13A (#3)

Since we need to set the baud rate. We have to use either manual delay or timer interrupt.

For now, I am trying using manual delay.



Check whether the Pin B0 is blinking using this code

.include "../tn13Adef.inc"

.cseg

.org 0x00

ldi r16, 0b00000001

out ddrb,r16

loop:

ldi r17,0xff

ldi r18,0xff

sbi PORTB,0

rcall delay

cbi PORTB,0

rcall delay

rjmp loop

delay:

dec r17

brne delay

dec r18

brne delay

ret

yup, it is

Serial Communication at ATTiny13A (#2)

To send  bit data, we need 10 bit.

0(start)-8bit-1(stop) so r17 now has value 10

.include "../tn13Adef.inc" 

.cseg

.org 0x00

rjmp start 

start:

    ldi r16, 0x6D 

    ldi r17, 10 

shiftData:

    cpi r17, 10 

    breq low 

    cpi r17, 1

    breq high

    lsr r16

    brcs high

low:

    cbi PORTB, PB0 

    rjmp sent

high:

    sbi PORTB, PB0 

sent:

    dec r17 

    breq start 

    rjmp shiftData 

Nugrohos-MacBook-Air:serial nugroho$ avra -o serialTX.hex serialTX.s
AVRA: advanced AVR macro assembler Version 1.3.0 Build 1 (8 May 2010)
Copyright (C) 1998-2010. Check out README file for more info

   AVRA is an open source assembler for Atmel AVR microcontroller family
   It can be used as a replacement of 'AVRASM32.EXE' the original assembler
   shipped with AVR Studio. We do not guarantee full compatibility for avra.

   AVRA comes with NO WARRANTY, to the extent permitted by law.
   You may redistribute copies of avra under the terms
   of the GNU General Public License.
   For more information about these matters, see the files named COPYING.

Pass 1...
Pass 2...
done

Used memory blocks:
   Code      :  Start = 0x0000, End = 0x000E, Length = 0x000F

Assembly complete with no errors.
Segment usage:
   Code      :        15 words (30 bytes)
   Data      :         0 bytes
   EEPROM    :         0 bytes
Nugrohos-MacBook-Air:serial nugroho$ vavrdisasm serialTX.s.hex 
   0: c0 00       rjmp .+0 ; 0x2
   2: e6 0d       ldi R16, 0x6d
   4: e0 1a       ldi R17, 0x0a
   6: 30 1a       cpi R17, 0x0a
   8: f0 21       breq .+8 ; 0x12
   a: 30 10       cpi R17, 0x00
   c: f0 11       breq .+4 ; 0x12
   e: 95 06       lsr R16
  10: f0 10       brcs .+4 ; 0x16
  12: 98 c0       cbi $18, 0
  14: c0 01       rjmp .+2 ; 0x18
  16: 9a c0       sbi $18, 0
  18: 95 1a       dec R17
  1a: f3 99       breq .-26 ; 0x2
  1c: cf f4       rjmp .-24 ; 0x6
Nugrohos-MacBook-Air:serial nugroho$ 

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