The question is, can the hardware flow control of the uart be a peripheral flow controller of the dma?
The answer will be found in the document below, page 14, 1.1.12 Flow control.
Using the STM32F2, STM32F4 and STM32F7 Series DMA controller
What do you exactly mean by "peripheral flow controller of the DMA", and how does it relate to RS485?
Retrieving data ...