How to connect arduino to Altera DE2 borad Altera (FPGA)?

hi,

I have been looking around to find any guidance or interfacing tutorial on connecting arduino uno board to DE2 board. Have not found any yet. I am trying to connect an proximity sensor to an arduino. sensor is supposed to detect my hand's position then feed data to arduino, and arduino has to convert those data to digital and feed it to DE2 board so it can be displayed on monitor through VGA module. Any place that I can learn about this kind of interfacing? has it been done before?

thanks

ipv1 over 11 years ago

This reply comes a bit late, but I find that the best way to connect an arduino to your FPGA or any board for that matter is by using the UART. You can add a module to your FPGA project for the UART and the Arduino already has the necessary peripheral. If your data from arduino is simple then you can send it as a single byte or if its a large amount of data, you can write a frame structure in C(start of frame, data, end of frame) and send the data that way.
On the FPGA end, you can check for start and end of frame and move the serial data to a buffer if the checks are met. It is simpler than it sounds so all the best.
Word or Caution! FPGA pins are typically 3.3v or less so unless you are using a dev kit I recommend you use some interfacing circuit like resistor dividers or even opto couplers etc.
Hope that help.
Cheers.
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