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Altera_Forum
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10 years ago

HC-SR04 (ultrasonic sensor) verilog code help

Hi, for my project i have to interface the HC-SR04 (ultrasonic sensor) to my DE2-115 board. I have been struggling with the verilog code for a while. Can anyone please help me out with the code? T...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

Hi Mao,

Base on the HC-SR04 (ultrasonic sensor) timing diagram the control signal is trig and echo pulse width. I could suggest you design a state machine to generate the trig pulse with counter. Use the Echo trig to calculate the pulse and cover to distance.