How can I utilize the DMA function on the STM32G070 chip?

[ShiPC123]

Hello, in my actual project, I need to use a baud rate of up to 2.5M to read the encoder data. I want to enable the DMA function to handle a large amount of data. How should I write my code? thanks

[fpistm]

You have to use HAL. See example of the STM32Cube project.
Here an example of a STM32CubeF1 project ported to STM32duino:
https://www.stm32duino.com/viewtopic.php?t=110