Servo Magazine ( August 2017 )
Interfacing an FPGA PMOD Sensor with the Digilent Arty™ Board
By Steven Howell View In Digital Edition
As an FPGA (field-programmable gate array) engineer, I have a variety of evaluation boards, and love the challenge of creating custom hardware. Interfacing the PMOD to my FPGA based control logic would give me the opportunity to write some interesting HDL code. The Silicon Labs’ PMOD sensor module I’m using combines an Si1145 proximity/UV/ambient light sensor with an Si7020 humidity/temperature sensor on a small board with an I2C interface. In Part 1 of a three-part series, this article covers outlining the module interface, reviewing the I2C protocol, and developing a flowchart to assist with the details of writing Verilog code.
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