STM32F439xx HAL User Manual
Defines
DMA2D Alpha Mode
DMA2D Exported Constants

Defines

#define DMA2D_NO_MODIF_ALPHA   0x00000000U
#define DMA2D_REPLACE_ALPHA   0x00000001U
#define DMA2D_COMBINE_ALPHA   0x00000002U

Define Documentation

#define DMA2D_COMBINE_ALPHA   0x00000002U

Replace original alpha channel value by programmed alpha value with original alpha channel value

Definition at line 235 of file stm32f4xx_hal_dma2d.h.

#define DMA2D_NO_MODIF_ALPHA   0x00000000U

No modification of the alpha channel value

Definition at line 233 of file stm32f4xx_hal_dma2d.h.

#define DMA2D_REPLACE_ALPHA   0x00000001U

Replace original alpha channel value by programmed alpha value

Definition at line 234 of file stm32f4xx_hal_dma2d.h.