Digital compass system is based on Dallas micro controller and FPGA Altera.
User may change the angle of slope and it direction and see the changing on VGA display. Direction is mesured by digital compass communicated with i2c protocol , angle of slope with tilt sensors . DE1 board reading the data from micro controller via RS232 protocol and drawing different pictures on VGA display with 640*480 resolution(works as the graphic card). DS89C450 program is written on C51 ,FPGA code is written on VHDL .
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