In 2004 i've made a Linux driver for the DS1339 I2C
Serial Real-Time Clock:
Some driver stubs for the
Samsung S3C2410 (ARM9 core):
adc.tgz for measuring the pulse via electrodes in a left and a right hand grip by calculation of the autocorrelation and fast Fourier transform of the product of both signals.
digital_pulse.tgz for measuring the pulse from a digital signal.
grey_encoder.tgz for decoding the signals of a gray encoder (mouse wheel) by an interrupt service routine.
keyboard.tgz - a keyboard driver.