10.07.2015 Views

User Manual - Terasic

User Manual - Terasic

User Manual - Terasic

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Chapter 8DE0-Nano Demonstrations8.1 System RequirementsMake sure Quartus II and NIOS II are installed on your PC.8.2 Breathing LEDsThis demonstration shows how to use the FPGA to control the luminance of the LEDs by means ofpulse-width modulation (PWM) scheme. The LEDs are divided into two groups, while one groupdims the other group brightens, vice versa. <strong>User</strong>s can change the PWM wave's duty ratio andfrequency to control the LED luminance and repetition rate.Figure 8-1 Shows a diagram of PWM signals to drive LED.129

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