基于STM32 DMA控制器的高效数据传输及应用

Efficient data transfer and application based on STM32 DMA controller

随着科技的发展,物探生产对物探装备的要求越来越高,微处理器连接外设越来越多,处理任务也越来越多。MCU大量工作都用在数据传输上,由于MCU内存较小,如何进行高效数据处理传输显得尤为重要。直接存储器访问可以实现在不占用MCU过多资源的情况下,直接从外设或内存中传输大量数据。本文以STM32F407VET6芯片为例,详细介绍DMA,并将其与UART串口相结合应用到NTRIP RTK数据传输中。实践证明,合理的DMA应用能够有效提高系统工作效率。

With the development of technology,the demands for physical exploration equipment in physical exploration production are increasingly high,with more and more peripherals connected to microprocessors and an increasing number of tasks to be processed.A significant amount of MCU work is devoted to data transmission,and efficient data transmission is particularly important due to the limited MCU memory.Direct Memory Access(DMA)enables the transmission of large amounts of data directly from peripherals or memory without consuming excessive MCU resources.This paper takes the STM32F407VET6 chip as an example,introduces DMA in detail,and applies it in combination with the UART serial port to NTRIP RTK data transmission.Practical applications have demonstrated that reasonable DMA application can effectively enhance system efficiency.