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Altera_Forum
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9 years ago

connecting 4 GPIO pins to DAC using SPI interface

Hi. I am new to altera and am interested in connecting a DAC via the GPIO pins on my development board. the DAC takes a data connection using the spi interface so I am wondering what is the best ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

First of all, debug the control port by manually accessing SPI registers: use IORD and IOWR like in the alt_avalon_spi_command code above, just to be sure the MM interface is ok.

You can also directly write the TX register and verify if you get any serial data out.