I know that standard way - with the programmer you read the calibration data and then you can write it into rpogram memory. Then , after I program the chip and run it I can take this value and set it into calibration register.
The problem is that I have 10 000 already programmed and mounted AVR devices, that have to reprogrammed..
If I can read directly from the program the calibration bit, then I can just don't need to read in the programmer this value and then to write it in the memory... I need direct way to read the calibration data (like is in Microchip)
regards
Luben