Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

IORD IOWR macros vs. memory access to peripherals

What is the point of the IORD and IOWR macros? I can access my custom Avalon peripherals using them, but it seems like I can't access them like the following: volatile alt_u32 *DEV_PTR = DEV_...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

You don't directly control the pins from the software. Just access the memory from your code through pointers and/or the IOWR/RD macros and the hardware will control the sram pins accordingly.