Objective Development Forums

For fuse setting - look in the datasheet for the ATtiny2313. CKSEL[3:0] have to be changed as well as SUT[1:0].

It should be:


The pins are used as both input and output. Impedance is probably too big with the 2.2k series resistance.

Did you turn off debugging?
Without debugging I got slightly below 2000 bytes when using bootloadHID at 12.8 MHz, using the same GCC version.

I actually tried to see what happened in different temperatures. The code calibrates the frequency by measuring the intervals between marker pulses. When putting a bag of ice on the IC OSCCAL moved from 249 to 250. When putting the IC under a lamp OSCCAL went down to 248. Those were not huge differe...

It may not be fast enough. According to the data sheet the typical propagation delay is 500 ns with VCC 5 V and 750 ns with VCC 2.7V. The bit time of the 1.5 Mbit/s signal is 667 ns.

Hi Gert, I think that when the device (during buggy development ) did something illegal the kernel stopped looking for devices on that USB-port. Later, when the bug was fixed and the device was connected to a different USB-port everything worked as it should. It is easier to write a command in the t...

I have used the 12.8 MHz code on an ATMega88. It works great. ATMega168 is from the same family so that should work as well. With a VCC of about 3.4 volts, I had to load the value 249 into OSCCAL, to reach a frequency of 12.8 MHz. The frequency is dependent on temperature and voltage. 249 is close t...

Are you sure your hardware is working?

I tried hidtool on Linux first. It worked after some general debugging, like moving the physical connector between USB-ports.

After reading your first post I could compile it on Windows. hidtool.exe worked with my hardware right away.

Problem solved. I am using a USB-hub. After disconnecting the hub and connecting it to a different USB-port everything is working.

Is there a unix command which would make things work without manually disconnecting and changing USB-port?

I have successfully tried the hid-mouse example under Windows XP; the device is recognized and the mouse pointer starts to move in a big circle. However, in Ubuntu nothing seems to happen when i plug it in; dmesg says nothing, and no messages are appended in the log files. I'm quite new to both Linu...