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Altera_Forum's avatar
Altera_Forum
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13 years ago

using GPIO on DE2 board

hi, currently i'm doing a project using a sensor which has pwm output. i'm already done the coding to read the pwm output. i would like to connect the pwm output from the sensor ti de2 board as input...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

the sensor operating voltage is between 2.5 to 5.5V, so i want to use VCC5V from the GPIO to power up the sensor and assign one of the GPIO pin as the input and connect to the pwm output of the sensor. i'm using fpga internal clock 50Mhz . the pwm output is 147us per inch, using the 50MHz clock on the FPGA, 147us / 20ns = 7350 counts per inch.

do i need to use synchronizer? how to add one?

thanks,