USBaspLoader - Metaboard - UART

General discussions about V-USB, our firmware-only implementation of a low speed USB device on Atmel's AVR microcontrollers
Post Reply
eKuaLL
Posts: 2
Joined: Thu Jul 15, 2010 5:23 pm

USBaspLoader - Metaboard - UART

Post by eKuaLL » Thu Jul 15, 2010 7:19 pm

I am new to this forum and i want to say hello before i state my question ;)
I come from berlin so please take into account that my english skills arent that advanced. thank you.

The issue i want to deal with is to use the USBaspLoader to program several types of atmel uC like the metaboard. I searched the internet and this forum for an answer to the question whether it is possible to use RXD/TXD to communicate with an just programmed uC. I would like to use ATMega8 to flash the bootloader on and its hardware UART like i did it with an RS232 interface before. i built in a little switch because the pin 2 of the sub-d9 was used to program as well to communicate with the uC and i also had to deactivate DTR at my terminal program (developed on my own).

to sum up my question:
how to make the USBaspLoader recognize that the data i send will not be programming data? or in other words: should i better use a switch and a Tiny2313 with CDC to use the usb port to communicate with the just programmed uC? the disadvantage in this case would be that i need 2 uC.

I hope you can help me and that i stated my question correctly containing all relevant information, or give good advice, thank you :)

greetings, eKuaLL

frank26080115
Rank 2
Rank 2
Posts: 43
Joined: Fri Jun 19, 2009 4:43 pm

Re: USBaspLoader - Metaboard - UART

Post by frank26080115 » Fri Jul 16, 2010 6:34 pm

Once USBaspLoader finishes loading the new firmware, it is no longer a "USBaspLoader". Your application code will take care of everything, you can put CDC code into your application code if you wish.

eKuaLL
Posts: 2
Joined: Thu Jul 15, 2010 5:23 pm

Re: USBaspLoader - Metaboard - UART

Post by eKuaLL » Sat Jul 17, 2010 3:58 pm

seems like i understood things wrong.

thank you!

Post Reply