UART in nios II

Hi Cris

Thanks for youtr reply

you mean by "Altera standard UART core with a DMA controller" the Altera 16550 UART?

If yes, I understand from the spec that only an HPS processor can interface with Altera 16550 UART DMA side

The following is from the Altera 16550 UART spec

"DMA Support

The DMA interface (DMA_EXTRA) is disabled by default. It must be enabled in the IP to have the

additional DMA_Handshaking_tx and DMA_Handshaking_rx interfaces. dma support is only available

when used with the hps dma controller. The HPS DMA controller has the required handshake signals to

control DMA data transfers with the IP through the DMA_Handshaking_tx and DMA_Handshaking_rx

interfaces. The DMA handshaking interfaces are connected to the HPS through the f2h DMA request

lines."

But our cyclone V does not support HPS unit . so the only way is to use a rx fifo . right ?

Shalom