ATxmega boot loader

Currently I bought a Micromedia Board ( microMMB for XMEGA ) from mikroEelektronika.

This board is perfect for general developing because can be used by programmers that don't have a programmer, because is coming with a bootloader pre-installed.

I mentioned only the bootloader because this bootloader is the problem

To upload a flash with 64KB size is taken about 10-15 minutes, or to develop a firmware is a very very long time to wait, visualizing this I developed a very fast bootloader to write only Flash and EEProm memory, only strictly necessary memories because all of other ATxmega features can be set from uploaded firmware.

In this stage I compiled eight bootloader firmwares only for ATxmega128A1 for each used hardware usart, and each firmware work with a 256000 baud transfer rate, this baud rate is set like default baud rate for the up-loader when is opened, I want to mention that the up-loader can work with atmega bootloader firmwares found here.

Version 1.0 of firmwares:

For usart 0 ( usart C0 ).

For usart 1 ( usart C1 ).

For usart 2 ( usart D0 ).

For usart 3 ( usart D1 ).

For usart 4 ( usart E0 ).

For usart 5 ( usart E1 ).

For usart 6 ( usart F0 ). can be used for Micromedia Board for XMEGA.

For usart 7 ( usart F1 ).

Download PC uploader program.

4x25W amplifier with internal usb control

This is a 4x22W amplifier 4Ohm which is young for a PCI Desktop slot and can be diagnosed and controlled by an internal USB connector.
This project is still in development stage
This card is made with a specialized circuit in Class D with I2C control interface produced by TexasInstruments TAS5414 QFP64 and a ATmega8 controller