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Altera_Forum
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15 years ago

DMA transfer inside ISR: Problem

Hi everybody, I think this is a common issue, but I didn't find a solution to my question, so hopefully I will get an answer here: I have a DMA controller which I want to use on an IRQ com...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Hi!

Yes, I'm using Altera UART. I try to use IOADDR_ALTERA_AVALON_UART_TXDATA(SERIAL_UART_BASE), but with this command the UART doesn't work, so I try to use a different BASE and with SERIAL_UART_BASE + 1 it works. So strange...

my SERIAL UART BASE is: 0x2903460

SERIAL_UART_BASE + 1 give me the address: 0x2903461

and IOADDR_ALTERA_AVALON_UART_TXDATA(SERIAL_UART_BASE) give me the address: 0x2903464