AN3117

Programming the DMA using the standard peripheral library

Doc ID 16846 Rev 4

17/28

3.2.2

Method 2: Flags/interrupts

The DMA peripheral provides two flags for each channel which are shown in Table 8.

If enabled as interrupt (using the DMA_ITConfig() function), each of the above flags can

generate an interrupt which alerts the user of the transaction status (using the

DMA_GetFlagStatus() / DMA_GetITStatus() functions). As both flags are cleared by

software, they must be cleared after their corresponding channel transfer (using

DMA_ClearFlag() / DMA_ClearITPendingBit() functions).

Table 8.

DMA flags

Flag

Description

HTIF

Half transfer interrupt flag

TCIF

Transfer complete interrupt flag