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AN52705 - PSoC® 3 and PSoC 5LP - Getting Started with DMA | 赛普拉斯半导体

AN52705 - PSoC® 3 and PSoC 5LP - Getting Started with DMA

最近更新: 
2019 年 8 月 25 日
版本: 
*C

AN52705 provides an introduction to direct memory access (DMA) in PSoC® 3 and PSoC 5LP. PSoC DMA can transfer data between on-chip peripherals and memory with no CPU intervention. The application note illustrates how to configure the DMA for simple data transfers, including peripheral to memory, memory to peripheral, peripheral to peripheral and memory to memory, using example projects.

简介

The DMA controller (DMAC) in PSoC 3 and PSoC 5LP can transfer data from a source to a destination with no CPU intervention. This allows the CPU to handle other tasks while the DMA does data transfers, thereby achieving a 'multiprocessing' environment.

The PSoC DMA Controller (DMAC) is highly flexible – it can seamlessly transfer data between memory and on chip peripherals including ADCs, DACs, Filter, USB, UART, and SPI. There are 24 independent DMA channels.

 The following table indicates the PSoC devices, PSoC Creator versions, compilers, and development kits that will work with this application note project:



Project
Device
PSoC Creator

Version
Development Kit

CY8CKIT-xxx
Compiler
架构
Silicon

Revision
V3.0 SP1

or higher
V2.1/2.0
001

DVK
030/050

DVK
003/014

FTK
Keil
GCC
RVDS
MDK

AN52705.zip

Prod
YES*
Prod
YES*
AN52705_Archive.zip
ES2, ES3, Prod
YES*
ES1, Prod
YES*

 *Refer to Migrating CY8CKIT-001 DVK project to CY8CKIT 030/ 050

注意:
  1. For PSoC 5 project and related document, please download file AN52705_Archive.zip.

Projects associated with this application note can be downloaded from the ‘Related Files’ section below. For your convenience, we have provided projects that are compatible with the two most recent versions of PSoC Creator:

  • AN52705.zip is used with PSoC Creator 3.0 SP1
  • AN52705_Archive.zip is used with PSoC Creator 2.1/2.0

The project’s default settings may not be compatible with your device or kit, and you may need to change your project settings. For more information, see:

翻译文档仅作参考之用。我们建议您在参与设计开发时参考文档的英语版本。