how to build a high voltage serial programme? for Attiny85
I don't mean a fuse resetter but one that i could use to upload a sketch with as well.
Any advice would be greatly appreciated.
Cheers
Trax
how to build a high voltage serial programme? for Attiny85
I don't mean a fuse resetter but one that i could use to upload a sketch with as well.
Any advice would be greatly appreciated.
Cheers
Trax
TraxXavier:
how to build a high voltage serial programme? for Attiny85
I don't mean a fuse resetter but one that i could use to upload a sketch with as well.Any advice would be greatly appreciated.
Cheers
Trax
Maybe here: AVR circuits HV programmer
Nope no answers there.
A circuit with that i can read fuses i already have as said here befoure: ATtiny85 Pin usage - Microcontrollers - Arduino Forum
what i need is i guess a firmware to do the flash content uplaoding.
Back a few years, there was a flurry of activity for the ATtiny11, which required HV Serial programming.
There was a design and some PC software here: Elektronik.de.vu - Programmer für den ATTiny11 an der seriellen Schnittstelle (german!)
and I designed a PCB and made some notes here: http://www.oocities.org/westfw/electronics/attiny11-prog-notes.html
I don't know if this is compatible with the ATtiny85. I don't know if it'll work with a modern PC (it bit bangs out a real serial port.) But it might be a starting point.
is there any code that would base on a atmega µC instead of a full pc?
I don't know. My impression is that HV serial programming is a lot like normal ISP programing, except for the initial fiddling with power and Vpp to put the chip in "programming mode." So ArduinoISP should come pretty close for the actual programming part, give a little extra code to enter programming mode.