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Altera_Forum
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10 years ago

Nios SPI read

Hi everybody, I'm using the alt_avalon_spi_command Altera function to write on a DAC and i have problem when i tried to read what i have wrote before. The DAC requiert 1 instruction byte (r/w+7 a...
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Altera_Forum
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10 years ago

Hi Rodo

in fact , you are right, is 0x80 but the result is the same, it didn't read the right value but only replace CBD814 to CBD884.

So this CBD8 remain the same for all the register.

And i have verify with the DAC34H84 Gui software, and after a write operation, i can read the register value via usb on the computer and there are right.But nothing with the read spi function.

So i don't know what's wrong!!!!!