Collaboration diagram for EW_BSP_DISPLAY:

Data Structures
struct	XDisplayInfo

Macros
#define	LAYER_INDEX 0

#define	VSYNC 1

#define	VBP 1

#define	VFP 1

#define	HSYNC 1

#define	HBP 1

#define	HFP 1

#define	NO_AREA 0

#define	LEFT_AREA 1

#define	RIGHT_AREA 2

#define	hltdc_handle hlcd_ltdc

#define	hdsi_handle hlcd_dsi

#define	__DSI_MASK_TE() (GPIOJ->AFR[0] &= (0xFFFFF0FFU))

#define	__DSI_UNMASK_TE()

#define	DSI_COLOR_CODING DSI_RGB888

#define	OTM8009A_FORMAT OTM8009A_FORMAT_RGB888

#define	EW_BSP_DISPLAY_UPDATE_NORMAL 0x00000000

#define	EW_BSP_DISPLAY_UPDATE_PARTIAL 0x00000001

#define	EW_BSP_DISPLAY_UPDATE_SCRATCHPAD 0x00000002

Functions
void	LCD_MspInit (void)
	LCD Intialization. More...

static void	LCD_DisplayOn (void)
	LCD ON. More...

static void	LCD_DisplayOff (void)
	LCD OFF. More...

static int32_t	DSI_IO_Write (uint16_t ChannelNbr, uint16_t Reg, uint8_t *pData, uint16_t Size)
	DCS or Generic short/long write command. More...

static int32_t	DSI_IO_Read (uint16_t ChannelNbr, uint16_t Reg, uint8_t *pData, uint16_t Size)
	DCS or Generic read command. More...

void	LTDC_IRQHandler (void)

void	LTDC_ER_IRQHandler (void)

void	DSI_IRQHandler (void)

void	HAL_DSI_TearingEffectCallback (DSI_HandleTypeDef *hdsi)

void	HAL_DSI_EndOfRefreshCallback (DSI_HandleTypeDef *hdsi)

static void	WaitForDsiTransfer (void)

int	EwBspDisplayInit (XDisplayInfo *aDisplayInfo)
	The function EwBspDisplayInit initializes the display hardware and returns the display parameter. More...

void	EwBspDisplayDone (void)
	The function EwBspDisplayDone deinitializes the display hardware. More...

int	EwBspDisplayGetUpdateArea (XRect *aUpdateRect)
	The function EwBspDisplayGetUpdateArea returns the next update area depending on the selected display mode: In case of a synchroneous single-buffer, the function has to return the the rectangular areas that correspond to the horizontal stripes (fields) of the framebuffer. In case of a scratch-pad buffer, the function has to return the subareas that fit into the provided update rectangle. During each display update, this function is called until it returns 0. More...

void	EwBspDisplayWaitForCompletion (void)
	The function EwBspDisplayWaitForCompletion is called from the Graphics Engine to ensure that all pending activities of the display system are completed, so that the rendering of the next frame can start. In case of a double-buffering system, the function has to wait until the V-sync has occured and the pending buffer is used by the display controller. In case of an external display controller, the function has to wait until the transfer (update) of the graphics data has been completed and there are no pending buffers. More...

void	EwBspDisplayCommitBuffer (void *aAddress, int aX, int aY, int aWidth, int aHeight)
	The function EwBspDisplayCommitBuffer is called from the Graphics Engine when the rendering of a certain buffer has been completed. The type of buffer depends on the selected framebuffer concept. If the display is running in a double-buffering mode, the function is called after each buffer update in order to change the currently active framebuffer address. Changing the framebuffer address should be synchronized with V-sync. If the system is using an external graphics controller, this function is responsible to start the transfer of the framebuffer content. More...

void	EwBspDisplaySetClut (unsigned long *aClut)
	The function EwBspDisplaySetClut is called from the Graphics Engine in order to update the hardware CLUT of the current framebuffer. The function is only called when the color format of the framebuffer is Index8 or LumA44. More...

Variables
LTDC_HandleTypeDef	hltdc_handle

DSI_HandleTypeDef	hdsi_handle

static LTDC_LayerCfgTypeDef	LayerConfig

static volatile int32_t	ActiveArea = NO_AREA

static RCC_PeriphCLKInitTypeDef	PeriphClkInitStruct

uint8_t	pColLeft [] = {0x00, 0x00, 0x01, 0x8F}

uint8_t	pColRight [] = {0x01, 0x90, 0x03, 0x1F}

uint8_t	pPage [] = {0x00, 0x00, 0x01, 0xDF}

uint8_t	pScanCol [] = {0x02, 0x15}

static int	FirstUpdateIsDone = 0

Detailed Description

Macro Definition Documentation

◆ __DSI_MASK_TE

#define __DSI_MASK_TE ( ) (GPIOJ->AFR[0] &= (0xFFFFF0FFU))

Mask DSI TearingEffect Pin

◆ __DSI_UNMASK_TE

#define __DSI_UNMASK_TE ( )

Value:

(GPIOJ->AFR[0] |= \

((uint32_t)(GPIO_AF13_DSI) << 8))

UnMask DSI TearingEffect Pin

◆ DSI_COLOR_CODING

#define DSI_COLOR_CODING DSI_RGB888

◆ EW_BSP_DISPLAY_UPDATE_NORMAL

#define EW_BSP_DISPLAY_UPDATE_NORMAL 0x00000000

◆ EW_BSP_DISPLAY_UPDATE_PARTIAL

#define EW_BSP_DISPLAY_UPDATE_PARTIAL 0x00000001

◆ EW_BSP_DISPLAY_UPDATE_SCRATCHPAD

#define EW_BSP_DISPLAY_UPDATE_SCRATCHPAD 0x00000002

◆ HBP

#define HBP 1

◆ hdsi_handle

#define hdsi_handle hlcd_dsi

◆ HFP

#define HFP 1

◆ hltdc_handle

#define hltdc_handle hlcd_ltdc

◆ HSYNC

#define HSYNC 1

◆ LAYER_INDEX

#define LAYER_INDEX 0

◆ LEFT_AREA

#define LEFT_AREA 1

◆ NO_AREA

#define NO_AREA 0

◆ OTM8009A_FORMAT

#define OTM8009A_FORMAT OTM8009A_FORMAT_RGB888

◆ RIGHT_AREA

#define RIGHT_AREA 2

◆ VBP

#define VBP 1

◆ VFP

#define VFP 1

◆ VSYNC

#define VSYNC 1

Function Documentation

◆ DSI_IO_Read()

static int32_t DSI_IO_Read	(	uint16_t	ChannelNbr,
		uint16_t	Reg,
		uint8_t *	pData,
		uint16_t	Size
	)

static

DCS or Generic read command.

Parameters

ChannelNbr	Virtual channel ID
Reg	Register to be read
pData	pointer to a buffer to store the payload of a read back operation.
Size	Data size to be read (in byte).

Return values

BSP status

◆ DSI_IO_Write()

static int32_t DSI_IO_Write	(	uint16_t	ChannelNbr,
		uint16_t	Reg,
		uint8_t *	pData,
		uint16_t	Size
	)

static

DCS or Generic short/long write command.

Parameters

ChannelNbr	Virtual channel ID
Reg	Register to be written
pData	pointer to a buffer of data to be write
Size	To precise command to be used (short or long)

Return values

BSP status

References hdsi_handle.

◆ DSI_IRQHandler()

void DSI_IRQHandler ( void )

◆ EwBspDisplayCommitBuffer()

void EwBspDisplayCommitBuffer	(	void *	aAddress,
		int	aX,
		int	aY,
		int	aWidth,
		int	aHeight
	)

The function EwBspDisplayCommitBuffer is called from the Graphics Engine when the rendering of a certain buffer has been completed. The type of buffer depends on the selected framebuffer concept. If the display is running in a double-buffering mode, the function is called after each buffer update in order to change the currently active framebuffer address. Changing the framebuffer address should be synchronized with V-sync. If the system is using an external graphics controller, this function is responsible to start the transfer of the framebuffer content.

Parameters

aAddress	Address of the framebuffer to be shown on the display.
aX	X,Origin of the area which has been updated by the Graphics Engine
aY	X,Origin of the area which has been updated by the Graphics Engine
aWidth	Size of the area which has been updated by the Graphics Engine
aHeight	Size of the area which has been updated by the Graphics Engine

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◆ EwBspDisplayDone()

void EwBspDisplayDone ( void )

The function EwBspDisplayDone deinitializes the display hardware.

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◆ EwBspDisplayGetUpdateArea()

int EwBspDisplayGetUpdateArea ( XRect * aUpdateRect )

The function EwBspDisplayGetUpdateArea returns the next update area depending on the selected display mode: In case of a synchroneous single-buffer, the function has to return the the rectangular areas that correspond to the horizontal stripes (fields) of the framebuffer. In case of a scratch-pad buffer, the function has to return the subareas that fit into the provided update rectangle. During each display update, this function is called until it returns 0.

Parameters

aUpdateRect Rectangular area which should be updated (redrawn).

Returns: int - Returns 1 if a further update area can be provided, 0 otherwise.

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◆ EwBspDisplayInit()

int EwBspDisplayInit ( XDisplayInfo * aDisplayInfo )

The function EwBspDisplayInit initializes the display hardware and returns the display parameter.

Parameters

aDisplayInfo Display info data structure.

Returns: int - Returns 1 if successful, 0 otherwise.

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◆ EwBspDisplaySetClut()

void EwBspDisplaySetClut ( unsigned long * aClut )

The function EwBspDisplaySetClut is called from the Graphics Engine in order to update the hardware CLUT of the current framebuffer. The function is only called when the color format of the framebuffer is Index8 or LumA44.

Parameters

aClut Pointer to a color lookup table with 256 entries.

◆ EwBspDisplayWaitForCompletion()

void EwBspDisplayWaitForCompletion ( void )

The function EwBspDisplayWaitForCompletion is called from the Graphics Engine to ensure that all pending activities of the display system are completed, so that the rendering of the next frame can start. In case of a double-buffering system, the function has to wait until the V-sync has occured and the pending buffer is used by the display controller. In case of an external display controller, the function has to wait until the transfer (update) of the graphics data has been completed and there are no pending buffers.

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◆ HAL_DSI_EndOfRefreshCallback()

void HAL_DSI_EndOfRefreshCallback ( DSI_HandleTypeDef * hdsi )

◆ HAL_DSI_TearingEffectCallback()

void HAL_DSI_TearingEffectCallback ( DSI_HandleTypeDef * hdsi )

◆ LCD_DisplayOff()

static void LCD_DisplayOff ( void )

static

LCD OFF.

◆ LCD_DisplayOn()

static void LCD_DisplayOn ( void )

static

LCD ON.

◆ LCD_MspInit()

void LCD_MspInit ( void )

LCD Intialization.

Enable the LTDC clock

Toggle Sw reset of LTDC IP

Enable the DMA2D clock

Toggle Sw reset of DMA2D IP

Enable DSI Host and wrapper clocks

Soft Reset the DSI Host and wrapper

NVIC configuration for LTDC interrupt that is now enabled

NVIC configuration for DMA2D interrupt that is now enabled

NVIC configuration for DSI interrupt that is now enabled

◆ LTDC_ER_IRQHandler()

void LTDC_ER_IRQHandler ( void )

◆ LTDC_IRQHandler()

void LTDC_IRQHandler ( void )

◆ WaitForDsiTransfer()

static void WaitForDsiTransfer ( void )

static

Variable Documentation

◆ ActiveArea

volatile int32_t ActiveArea = NO_AREA

static

◆ FirstUpdateIsDone

int FirstUpdateIsDone = 0

static

◆ hdsi_handle

DSI_HandleTypeDef hdsi_handle

◆ hltdc_handle

LTDC_HandleTypeDef hltdc_handle

◆ LayerConfig

LTDC_LayerCfgTypeDef LayerConfig

static

◆ pColLeft

uint8_t pColLeft[] = {0x00, 0x00, 0x01, 0x8F}

0 -> 399

◆ pColRight

uint8_t pColRight[] = {0x01, 0x90, 0x03, 0x1F}

400 -> 799

◆ PeriphClkInitStruct

RCC_PeriphCLKInitTypeDef PeriphClkInitStruct

static

◆ pPage

uint8_t pPage[] = {0x00, 0x00, 0x01, 0xDF}

0 -> 479

◆ pScanCol

uint8_t pScanCol[] = {0x02, 0x15}

Scan @ 533

Data Structures

Macros

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ __DSI_MASK_TE

◆ __DSI_UNMASK_TE

◆ DSI_COLOR_CODING

◆ EW_BSP_DISPLAY_UPDATE_NORMAL

◆ EW_BSP_DISPLAY_UPDATE_PARTIAL

◆ EW_BSP_DISPLAY_UPDATE_SCRATCHPAD

◆ HBP

◆ hdsi_handle

◆ HFP

◆ hltdc_handle

◆ HSYNC

◆ LAYER_INDEX

◆ LEFT_AREA

◆ NO_AREA

◆ OTM8009A_FORMAT

◆ RIGHT_AREA

◆ VBP

◆ VFP

◆ VSYNC

Function Documentation

◆ DSI_IO_Read()

◆ DSI_IO_Write()

◆ DSI_IRQHandler()

◆ EwBspDisplayCommitBuffer()

◆ EwBspDisplayDone()

◆ EwBspDisplayGetUpdateArea()

◆ EwBspDisplayInit()

◆ EwBspDisplaySetClut()

◆ EwBspDisplayWaitForCompletion()

◆ HAL_DSI_EndOfRefreshCallback()

◆ HAL_DSI_TearingEffectCallback()

◆ LCD_DisplayOff()

◆ LCD_DisplayOn()

◆ LCD_MspInit()

◆ LTDC_ER_IRQHandler()

◆ LTDC_IRQHandler()

◆ WaitForDsiTransfer()

Variable Documentation

◆ ActiveArea

◆ FirstUpdateIsDone

◆ hdsi_handle

◆ hltdc_handle

◆ LayerConfig

◆ pColLeft

◆ pColRight

◆ PeriphClkInitStruct

◆ pPage

◆ pScanCol