dma_vfifo Struct Reference

dma_vfifo specifies the specified settings of the VFF DMA, which are only used for the VFF DMA. More...

#include <os_hal_dma.h>

Data Fields
u32	fifo_thrsh
	It specifies the threshold for DMA_INT_VFIFO_THRESHOLD. More...
u8	alert_cmp_type
	Specifies the Alert Length of Virtual FIFO DMA.
u32	alert_len
	Specifies the Compare Equation Between ALTLEN and FIFO_SIZE - FIFO_CNT.
u32	fifo_size
	Virtual FIFO size.
u32	timeout_cnt
	Interrupt will assert if there is no new data into FIFO more than n T(Bus Clock)

Detailed Description

dma_vfifo specifies the specified settings of the VFF DMA, which are only used for the VFF DMA.

Field Documentation

u32 fifo_thrsh

It specifies the threshold for DMA_INT_VFIFO_THRESHOLD.

If the data count in FIFO is more or less than fifo_thrsh, the VFF DMA will trigger DMA_INT_VFIFO_THRESHOLD interrupt.

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The documentation for this struct was generated from the following file:

• os_hal_dma.h