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Altera_Forum's avatar
Altera_Forum
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13 years ago

How nios can read and write External FPGAs

Hi,

In my project am using 4 FPGAs

1) First FPGA am using Nios II

2) I want to access/ Control Other FPGA registers

so i have created a custom protocol in slave and master side ir Nios side am planing to do it in C code?

can u tell some ideas of c application how we can start???

2 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    13 years ago

    Why do you want to use a custom protocol. Why dont you model the interface as MASTER - SLAVE SPI interface and do a write cycle with address of register and read cycle with teh value of the register.

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    13 years ago

    User want to access via UART and access all other FPGAs thats why SPI is not using

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    Why do you want to use a custom protocol. Why dont you model the interface as MASTER - SLAVE SPI interface and do a write cycle with address of register and read cycle with teh value of the register.

    --- Quote End ---