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Altera_Forum's avatar
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

update:

i debuged the noise II processor.

it turns out that within the alt_avalon_spi_command function the code gets stuck in this line:

do

{

status = IORD_ALTERA_AVALON_SPI_STATUS(base);

}

while (((status & ALTERA_AVALON_SPI_STATUS_TRDY_MSK) == 0 || credits == 0) &&

(status & ALTERA_AVALON_SPI_STATUS_RRDY_MSK) == 0);

any thoughts why?