Difference between revisions of "ATtiny13"

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  yast -i bison flex gcc make
 
  yast -i bison flex gcc make
 
* install an avrdude update as described here: http://doswa.com/2010/08/24/avrdude-5-10-with-ftdi-bitbang.html
 
* install an avrdude update as described here: http://doswa.com/2010/08/24/avrdude-5-10-with-ftdi-bitbang.html
* Invert the FT232R's Bits as described under [[ftdi]].
 
 
* Connect MISO from the ATtiny 13 with RXD from the FT232R, and make more connections. In the end it must look like this:
 
* Connect MISO from the ATtiny 13 with RXD from the FT232R, and make more connections. In the end it must look like this:
 
   
 
   

Revision as of 14:29, 5 January 2013

This is an example how to upload a program to the ATtiny13 microprocessor so that it will act as a stand-alone computing device. An example is playing jingle bells.

Contents

Have

  • an ATtiny13
  • an ft232r chip
  • a program for the ATtiny13, e.g. blink2.hex
  • SUSE Linux 12.2. Other distributions may work similar, but you are on your own

Know

The ATtiny13 looks like this:

            ------
 PB0(MOSI)-|ATtiny|-GND
 PB1(MISO)-|  13  |-
 PB2 (SCK)-|      |-
       VCC-|     o|-RES
            ------

Do

yast -i bison flex gcc make
      ------
 RTS-|ATtiny|-GND
 RXD-|  13  |-
 TXD-|      |-
 VCC-|     o|-DTR
      ------
  • connect the FTDI chip with the computer
  • unload the ftdi driver:
rmmod ftdi_sio
  • test if avrdude works. Tell it to output the hfuse:
tweedleburg:~/at/avrdude-5.10 # ./avrdude -cft232r -pt13 -P/dev/ttyUSB0 -U hfuse:r:-:h -B 1
avrdude: BitBang OK 
avrdude: pin assign miso 1 sck 0 mosi 2 reset 4
avrdude: drain OK 

ft245r:  bitclk 4800 -> ft baud 2400
avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.00s

avrdude: Device signature = 0x1e9007
avrdude: current erase-rewrite cycle count is -158 (if being tracked)
avrdude: reading hfuse memory:

Reading | ################################################## | 100% 0.01s

avrdude: writing output file "<stdout>"
0xeb

avrdude: safemode: Fuses OK

avrdude done.  Thank you.
  • seems to work. Now upload blink2.hex:
tweedleburg:~/at/avrdude-5.10 # ./avrdude -cft232r -pt13 -P/dev/ttyUSB0 -U flash:w:blink2.hex -B 1

Now draw RES and the thing will start blinking :)))

Know-how

This does not fit into this article any more but I found it out: Read the flash:

tweedleburg:~/at/avrdude-5.10 # ./avrdude -cft232r -pt13 -P/dev/ttyUSB0 -U flash:r:-:h -B 1

TroubleShooting

Symptom
avrdude: /dev/ttyUSB0 open failed 
Solution
Unload the driver blocking /dev/ttyUSB0, in my case:
modprobe -r ftdi_sio

See also