ATmega - jak odczytać Fusebit w C i dostosować podzielniki rezonatora?

Cytat:

16.6.2 Reading Fuse Bits from Firmware
The algorithm for reading fuse bytes is similar to the one described above for reading lock bits,
only the addresses are different.
To read the Fuse Low Byte (FLB), follow the below procedure:
1. Load the Z-pointer with 0x0000.
2. Set RFLB and SELFPRGEN bits in SPMCSR.
3. Issuing an LPM instruction within three clock cycles will FLB in the destination register.

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oraz: http://embeddedgurus.com/stack-overflow/2009/...ng-the-fuse-bits-in-an-atmel-avr-at-run-time/