Small testprogram for DG8SAQ AVR-USB based SI570 Controllers It requires the original firmware from DG8SAQ.

Vendorid=16c0, Productid=05dc Manufacturer: www.obdev.at Product: DG8SAQ-I2C Serial number: Beta1.1

For example it is used in the kit FA-Synthesizer "FA-SY 1", 10 - 160 MHz from http://www.funkamteur.de

It should build against qt4 and qt5 To build untar / unzip the archiv and switch to the Si570Synth directory.

run: mkdir -p build cd build qmake -o Makefile ../Si570Synth.pro make

The executable Si570Synth can be found in the build directory. Start Si570Synth and try to connect to the device by pressing Test Usb

If the test succeeds you can read the registers and control the frequency. Calibrating the device is possible, too. Tune the device and measure the output frequency. Enter the output frequency into the calibration field. After pressing calibrate and restarting the device tuned frequency and measured output frequency should be the same.