FAQ
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FAQ
What is PDMA Stride Mode? How to use it? Issue Date：2018-11-28
Stride mode is a special PDMA mode, which can move the data of a certain memory to another memory with a fixed interval and quantity.
For example, there is a continuous memory block. The content data is picture color information and the order is fixed to red, green, blue. With Stride mode, individual red, green, and blue data can be extracted from the memory and moved to another memory block by hardware without any CPU intervention.
To enable Stride mode, four additional registers must be set in the normal PDMA basic mode:
a) STRIDEEN: Enable Stride mode
b) SASOL: Offset of the source address
c) DASOL: Offset of destination address
d) STC: The amount of data per Stride transmission
Please refer to section 6.6 in the M480 Series Technical Reference Manual for the introduction and setting of the PDMA basic mode.
| Products: | Microcontrollers ,Arm Cortex-M4 MCUs |
|---|---|
| Applications: | |
| Function: | Peripherals,Connectivity,DMA (PDMA) |