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Altera_Forum
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12 years ago

Building an SPI Decoder into Altera

Hello, I am working on a project which requires interfacing between a Microcontroller and an Altera FPGA. I'm using an Arduino UNO and DE0Nano Cyclone IV. The Arduino sends a 64bit word via SPI...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

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Just to make sure though, I still have a doubt on using the dual DFF synchronizer and the edge-detection logic.

Take I have my input SPI_Clk going into DFF1 and Q1 going into DFF2. Q2' is NOTed and ANDed with Q1. This give the SPI_rising_edge.

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Post your code (upload it as an attachment, don't post it inline). I'll take a look at it. Bonus points if you can create a Modelsim simulation :)

Cheers,

Dave