Can I use FIFO without enabling DMA in STM32?

[Mr.L0seR]

I want to use FIFO without Enabling USART_DMA in STM32CubeIDE . Is this is possible? If possible I can differentiate the small delays between data. and I can process the data according my requirement.

[TDK]

The FIFO is part of the DMA, hard to separate those.

You just want a general purpose FIFO you can store bytes in and retrieve? You'll have to do that in software.

[Tesla DeLorean]

Be specific about what STM32 you're talking about.

​

Some have a FIFO, and that is independent of DMA​

[Mr.L0seR]

I am using STM32F407VG(discovery) board. When I enabled DMA then Only I have the option of FIFO. If the FIFO is independent of DMA how I can use it?

[waclawek.jan]

In 'F407 there's no FIFO in the USART.

DMA has a FIFO which can be enabled or not.

Read the Reference Manual (RM0090), DMA and USART chapters.

JW