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AN61102 - PSoC® 3 and PSoC 5LP - ADC Data Buffering Using DMA | Cypress Semiconductor

AN61102 - PSoC® 3 and PSoC 5LP - ADC Data Buffering Using DMA

Last Updated: 
May 25, 2017
Version: 
*K

AN61102 describes how to configure the direct memory access (DMA) to buffer the analog-to-digital converter (ADC) data. It discusses how to overcome some of the limitations of the DMA when buffering the ADC data.

The DMA controller in PSoC® 3 and PSoC 5LP is used to handle data transfer without CPU intervention. This is useful in applications that require ADC data buffering and allows the CPU to do simultaneous tasks.

The video describes the case of using a DMA to buffer ADC data. Buffering of 20 bit ADC data is taken as an example and discussed. The video also gives a preview of the project implementing the 20 bit data buffering and explains the DMA configuration in code.

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
Architecture
Silicon
Revision
V3.0 SP1
V2.1 SP1
/2.1
001
DVK
030/050
DVK
003/014
FTK
Keil
GCC
RVDS
MDK

AN61102.zip

Prod
YES
NO
YES
YES*
NO
YES
N/A
N/A
N/A
Prod
YES
NO
YES
YES*
NO
N/A
YES
YES
YES
AN61102_Archive.zip
ES3, Prod
NO
YES
YES
YES*
NO
YES
N/A
N/A
N/A
ES1, Prod
NO
YES
YES
YES*
NO
N/A
YES
YES
YES

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

Notes:

  1. Click on AN77835 - PSoC® 3 to PSoC 5LP Migration Guide to learn differences between PSoC 3 and PSoC 5LP.
  2. For PSoC 5 project and related document, please download file AN61102_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:

  • AN61102.zip is used with PSoC Creator 3.0 SP1
  • AN61102_Archive.zip is used with PSoC Creator 2.1 SP1/2.1

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: