Data Structures
struct	XTft_Config
	This structure holds the Device base address, video memory base address and Unique identifier of the device. More...

struct	XTft
	This structure is the base for whole of the operations that are to be performed on the TFT screen. More...

Macros
#define	XTFT_ASCIICHAR_OFFSET 32
	As the first bitmap available in the Character Bitmap array is "space" whose value is 32 in the ASCII character table, this offset enables us to move to this first character in the array. More...

#define	XTFT_DEF_FGCOLOR 0x00FFFFFF
	The default color is white for foreground and black for background. More...

#define	XTFT_DEF_BGCOLOR 0x0
	Background Color - Black. More...

#define	XTFT_DEF_COLVAL 0x0
	Default Column Value. More...

#define	XTFT_DEF_ROWVAL 0x0
	Default Row Value. More...

#define	GenPixels(a7, a6, a5, a4, a3, a2, a1, a0)
	Compression method for the character bitmaps. More...

#define	XTFT_CHAR_WIDTH 8
	Dimension Definitions. More...

#define	XTFT_CHAR_HEIGHT 12
	Character height. More...

#define	XTFT_DISPLAY_WIDTH 640
	Width of the screen. More...

#define	XTFT_DISPLAY_HEIGHT 480
	Height of the screen. More...

#define	XTFT_DISPLAY_BUFFER_WIDTH 1024
	Buffer width of a line. More...

#define	XTFT_DCR_REG_SHIFT 2
	Reg Shift for DCR Access. More...

Functions
int	XTft_CfgInitialize (XTft InstancePtr, XTft_Config ConfigPtr, UINTPTR EffectiveAddr)
	This function initializes a TFT Driver Instance. More...

void	XTft_SetPos (XTft *InstancePtr, u32 ColVal, u32 RowVal)
	This function updates the column, row position in the Instance structure of driver. More...

void	XTft_SetPosChar (XTft *InstancePtr, u32 ColVal, u32 RowVal)
	This function changes the column, row position in the Instance structure of driver. More...

void	XTft_SetColor (XTft *InstancePtr, u32 FgColor, u32 BgColor)
	This function changes the color values in the instance structure of driver. More...

void	XTft_SetPixel (XTft *InstancePtr, u32 ColVal, u32 RowVal, u32 PixelVal)
	This function sets the pixel with the given color at the given column, row position. More...

void	XTft_GetPixel (XTft InstancePtr, u32 ColVal, u32 RowVal, u32 PixelVal)
	This function gets the color of the pixel at the given column, row position. More...

void	XTft_Write (XTft *InstancePtr, u8 CharValue)
	This function performs one of the following three operations based on the CharValue passed : More...

void	XTft_Scroll (XTft *InstancePtr)
	This function inserts a new blank line at the bottom of the screen, it deletes the first line and moves the remaining lines up by one line. More...

void	XTft_ClearScreen (XTft *InstancePtr)
	This function re-initializes all the pixels to the default background color. More...

void	XTft_FillScreen (XTft *InstancePtr, u32 ColStartVal, u32 RowStartVal, u32 ColEndVal, u32 RowEndVal, u32 PixelVal)
	This function fills the screen with the range defined by the start and end values of column and row with the color passed as argument. More...

void	XTft_EnableDisplay (XTft *InstancePtr)
	This function enables the TFT display by setting the Display Enable bit in the Control register. More...

void	XTft_DisableDisplay (XTft *InstancePtr)
	This function disables the TFT display by clearing the Display Enable bit in the Control register. More...

void	XTft_ScanReverse (XTft *InstancePtr)
	This function enables reverse scan by setting the Display Scan Control(DPS) bit in the Control register. More...

void	XTft_ScanNormal (XTft *InstancePtr)
	This function enables normal scan by clearing the Display Scan Control(DPS) bit in the Control register. More...

void	XTft_SetFrameBaseAddr (XTft *InstancePtr, UINTPTR NewFrameBaseAddr)
	This function changes the Video Memory Base address stored in the Address Register. More...

void	XTft_WriteReg (XTft *InstancePtr, u32 RegOffset, u32 Data)
	Write a value to a TFT register. More...

u32	XTft_ReadReg (XTft *InstancePtr, u32 RegOffset)
	Read a value from a TFT register. More...

void	XTft_IntrEnable (XTft *InstancePtr)
	This function enables the Vsync Interrupt in the Interrupt Enable and Status Register. More...

void	XTft_IntrDisable (XTft *InstancePtr)
	This function disables the Vsync Interrupt in the Interrupt Enable and Status Register. More...

int	XTft_GetVsyncStatus (XTft *InstancePtr)
	This function gets the Vsync(Video address latch) status from the Interrupt Enable and Status Register. More...

XTft_Config *	XTft_LookupConfig (u16 DeviceId)
	This function obtains the Configuration pointer of the device whose ID is being passed as the parameter to the function. More...

Variables
u8	XTft_VidChars [96][12]
	Character array of 96 characters with each character having dimensions of width 8 and height 12 pixels. More...

XTft_Config	XTft_ConfigTable []
	The configuration table for TFT devices in the table. More...

XTft_Config	XTft_ConfigTable []
	The configuration table for TFT devices in the table. More...

TFT Register offsets
The following definitions provide access to each of the registers of the TFT device.
#define	XTFT_AR_OFFSET 0
	Address Reg (Video memory) Offset. More...

#define	XTFT_CR_OFFSET 4
	Control Register Offset. More...

#define	XTFT_IESR_OFFSET 8
	Interrupt Enable and Status Reg Offset. More...

#define	XTFT_AR_LSB_OFFSET 0x10
	Address Reg LSB (Video memory) Offset. More...

#define	XTFT_AR_MSB_OFFSET 0x14
	Address Reg MSB (Video memory) Offset. More...

TFT Control Register (CR) mask(s)
#define	XTFT_CR_TDE_MASK 0x01
	TFT Display Enable Bit Mask. More...

#define	XTFT_CR_DPS_MASK 0x02
	TFT Display Scan Control Bit Mask. More...

TFT Interrupt Enable and Status Register (IESR) mask(s)
#define	XTFT_IESR_VADDRLATCH_STATUS_MASK 0x01
	TFT Video Address Latch Status Bit Mask. More...

#define	XTFT_IESR_IE_MASK 0x08
	TFT Interrupt Enable Mask. More...

Macro Definition Documentation

#define GenPixels	(	a7,
		a6,
		a5,
		a4,
		a3,
		a2,
		a1,
		a0
	)

Value:

(   ((a7) << 7) |       \
                ((a6) << 6) | ((a5) << 5) | ((a4) << 4) | ((a3) << 3) | \
                ((a2) << 2) | ((a1) << 1) | (a0)   )

Compression method for the character bitmaps.

Parameters

a7	is bit value at 8th position.
a6	is bit value at 7th position.
a5	is bit value at 6th position.
a4	is bit value at 5th position.
a3	is bit value at 4th position.
a2	is bit value at 3rd position.
a1	is bit value at 2nd position.
a0	is bit value at 1st position.

Returns: Bit Value - either 0 or 1.

Note: C-style signature: int GenPixels(int a7, int a6, int a5, int a4, int a3, int a2, int a1, int a0).

#define XTFT_AR_LSB_OFFSET 0x10

Address Reg LSB (Video memory) Offset.

Referenced by XTft_SetFrameBaseAddr().

#define XTFT_AR_MSB_OFFSET 0x14

Address Reg MSB (Video memory) Offset.

Referenced by XTft_SetFrameBaseAddr().

#define XTFT_AR_OFFSET 0

Address Reg (Video memory) Offset.

Referenced by XTft_SetFrameBaseAddr().

#define XTFT_ASCIICHAR_OFFSET 32

As the first bitmap available in the Character Bitmap array is "space" whose value is 32 in the ASCII character table, this offset enables us to move to this first character in the array.

To achieve this we subtract this offset from the char value actually received to the XTft_WriteChar function. Similarly to move to any other character this offset must be subtracted.

#define XTFT_CHAR_HEIGHT 12

Character height.

Referenced by XTft_Scroll(), XTft_SetPosChar(), and XTft_Write().

#define XTFT_CHAR_WIDTH 8

Dimension Definitions.

Character width

Referenced by XTft_SetPosChar(), and XTft_Write().

#define XTFT_CR_DPS_MASK 0x02

TFT Display Scan Control Bit Mask.

Referenced by XTft_ScanNormal(), and XTft_ScanReverse().

#define XTFT_CR_OFFSET 4

Control Register Offset.

Referenced by XTft_DisableDisplay(), XTft_EnableDisplay(), XTft_ScanNormal(), and XTft_ScanReverse().

#define XTFT_CR_TDE_MASK 0x01

TFT Display Enable Bit Mask.

Referenced by XTft_DisableDisplay(), and XTft_EnableDisplay().

#define XTFT_DCR_REG_SHIFT 2

Reg Shift for DCR Access.

#define XTFT_DEF_BGCOLOR 0x0

Background Color - Black.

Referenced by XTft_CfgInitialize().

#define XTFT_DEF_COLVAL 0x0

Default Column Value.

Referenced by XTft_CfgInitialize(), XTft_ClearScreen(), XTft_Scroll(), XTft_SetPosChar(), and XTft_Write().

#define XTFT_DEF_FGCOLOR 0x00FFFFFF

The default color is white for foreground and black for background.

These values can range from 0 to 0xFFFFFFFF as each color is ranging from 0 to 3F. The default value for column and row is 0.Foreground Color - White

Referenced by XTft_CfgInitialize().

#define XTFT_DEF_ROWVAL 0x0

Default Row Value.

Referenced by XTft_CfgInitialize(), and XTft_ClearScreen().

#define XTFT_DISPLAY_BUFFER_WIDTH 1024

Buffer width of a line.

Referenced by XTft_GetPixel(), and XTft_SetPixel().

#define XTFT_DISPLAY_HEIGHT 480

Height of the screen.

Referenced by XTft_CfgInitialize(), XTft_ClearScreen(), XTft_FillScreen(), XTft_GetPixel(), XTft_Scroll(), XTft_SetPixel(), XTft_SetPos(), and XTft_SetPosChar().

#define XTFT_DISPLAY_WIDTH 640

Width of the screen.

Referenced by XTft_CfgInitialize(), XTft_ClearScreen(), XTft_FillScreen(), XTft_GetPixel(), XTft_Scroll(), XTft_SetPixel(), XTft_SetPos(), and XTft_SetPosChar().

#define XTFT_IESR_IE_MASK 0x08

TFT Interrupt Enable Mask.

Referenced by XTft_IntrDisable(), and XTft_IntrEnable().

#define XTFT_IESR_OFFSET 8

Interrupt Enable and Status Reg Offset.

Referenced by XTft_GetVsyncStatus(), XTft_IntrDisable(), and XTft_IntrEnable().

#define XTFT_IESR_VADDRLATCH_STATUS_MASK 0x01

TFT Video Address Latch Status Bit Mask.

Referenced by TftExample(), and XTft_GetVsyncStatus().

Function Documentation

int XTft_CfgInitialize	(	XTft *	InstancePtr,
		XTft_Config *	ConfigPtr,
		UINTPTR	EffectiveAddr
	)

This function initializes a TFT Driver Instance.

Parameters

InstancePtr	is a pointer to the XTft instance.
ConfigPtr	is a pointer to a XTft_Config configuration structure.This structure will contain the requested configuration for the device. Typically, this is a local structure and the content of which will be copied into the configuration structure within XTft.
EffectiveAddr	is the device base address in the virtual memory address space. If the address translation is not used then the physical address is passed. Unexpected errors may occur if the address mapping is changed after this function is invoked.

Returns

XST_SUCCESS if successful.
XST_FAILURE if unsuccessful.

Note: None.

References XTft_Config::BaseAddress, XTft::BgColor, XTft::ColVal, XTft_Config::DeviceId, XTft::FgColor, XTft::IsReady, XTft::RowVal, XTft::TftConfig, XTft_Config::VideoMemBaseAddr, XTFT_DEF_BGCOLOR, XTFT_DEF_COLVAL, XTFT_DEF_FGCOLOR, XTFT_DEF_ROWVAL, XTFT_DISPLAY_HEIGHT, XTFT_DISPLAY_WIDTH, and XTft_FillScreen().

Referenced by TftExample().

void XTft_ClearScreen ( XTft * InstancePtr )

This function re-initializes all the pixels to the default background color.

Parameters

InstancePtr is a pointer to the XTft instance.

Returns: None.

Note: None.

References XTft::BgColor, XTft::ColVal, XTft::IsReady, XTft::RowVal, XTFT_DEF_COLVAL, XTFT_DEF_ROWVAL, XTFT_DISPLAY_HEIGHT, XTFT_DISPLAY_WIDTH, and XTft_FillScreen().

Referenced by TftExample().

void XTft_DisableDisplay ( XTft * InstancePtr )

This function disables the TFT display by clearing the Display Enable bit in the Control register.

Parameters

InstancePtr is a pointer to the XTft instance.

Returns: None.

Note: None.

References XTft::IsReady, XTFT_CR_OFFSET, XTFT_CR_TDE_MASK, XTft_ReadReg(), and XTft_WriteReg().

Referenced by TftExample().

void XTft_EnableDisplay ( XTft * InstancePtr )

This function enables the TFT display by setting the Display Enable bit in the Control register.

Parameters

InstancePtr is a pointer to the XTft instance.

Returns: None.

Note: None.

References XTft::IsReady, XTFT_CR_OFFSET, XTFT_CR_TDE_MASK, XTft_ReadReg(), and XTft_WriteReg().

Referenced by TftExample().

void XTft_FillScreen	(	XTft *	InstancePtr,
		u32	ColStartVal,
		u32	RowStartVal,
		u32	ColEndVal,
		u32	RowEndVal,
		u32	PixelVal
	)

This function fills the screen with the range defined by the start and end values of column and row with the color passed as argument.

Parameters

InstancePtr	is a pointer to the XTft instance.
ColStartVal	is the value of the starting column. The valid values are 0 to (XTFT_DISPLAY_WIDTH - 1).
RowStartVal	is the value of the starting row. The valid values are 0 to (XTFT_DISPLAY_HEIGHT - 1).
ColEndVal	is the value of the ending column. The valid values are 0 to (XTFT_DISPLAY_WIDTH - 1).
RowEndVal	is the value of the ending row. The valid values are 0 to (XTFT_DISPLAY_HEIGHT - 1).
PixelVal	represents the color with which it will be filled on screen.

Returns: None.

Note: It must be taken care to pass values such that column start position should not exceed column end position, same is the case with row position.

References XTft::IsReady, XTFT_DISPLAY_HEIGHT, XTFT_DISPLAY_WIDTH, and XTft_SetPixel().

Referenced by XTft_CfgInitialize(), XTft_ClearScreen(), and XTft_Scroll().

void XTft_GetPixel	(	XTft *	InstancePtr,
		u32	ColVal,
		u32	RowVal,
		u32 *	PixelVal
	)

This function gets the color of the pixel at the given column, row position.

Parameters

InstancePtr	is a pointer to the XTft instance.
ColVal	represents the column on the screen. The valid values are 0 to (XTFT_DISPLAY_WIDTH - 1).
RowVal	represents the row on the screen. The valid values are 0 to (XTFT_DISPLAY_HEIGHT - 1).
PixelVal	stores the color value on the screen pointed by given Column and Row position.

Returns: None.

Note: This API is independent of the interface the TFT Controller is connected to. The data is read from the Video Memory.

References XTft::IsReady, XTft::TftConfig, XTft_Config::VideoMemBaseAddr, XTFT_DISPLAY_BUFFER_WIDTH, XTFT_DISPLAY_HEIGHT, and XTFT_DISPLAY_WIDTH.

Referenced by XTft_Scroll().

int XTft_GetVsyncStatus ( XTft * InstancePtr )

This function gets the Vsync(Video address latch) status from the Interrupt Enable and Status Register.

Parameters

InstancePtr is a pointer to the XTft instance.

Returns

TRUE if Vsync pulse has occurred after displaying the current frame.
FALSE if the TFT core has not completed displaying the current frame.

Note: Vsync(Video address latch) Status bit will be cleared by the HW after it loads the address from the Address Register and starts displaying the Frame.

References XTft::IsReady, XTFT_IESR_OFFSET, XTFT_IESR_VADDRLATCH_STATUS_MASK, and XTft_ReadReg().

Referenced by TftExample().

void XTft_IntrDisable ( XTft * InstancePtr )

This function disables the Vsync Interrupt in the Interrupt Enable and Status Register.

Parameters

InstancePtr is a pointer to the XTft instance.

Returns: None.

Note: None.

References XTft::IsReady, XTFT_IESR_IE_MASK, XTFT_IESR_OFFSET, XTft_ReadReg(), and XTft_WriteReg().

void XTft_IntrEnable ( XTft * InstancePtr )

This function enables the Vsync Interrupt in the Interrupt Enable and Status Register.

Parameters

InstancePtr is a pointer to the XTft instance.

Returns: None.

Note: None.

References XTft::IsReady, XTFT_IESR_IE_MASK, XTFT_IESR_OFFSET, XTft_ReadReg(), and XTft_WriteReg().

XTft_Config * XTft_LookupConfig ( u16 DeviceId )

This function obtains the Configuration pointer of the device whose ID is being passed as the parameter to the function.

Parameters

DeviceId is the unique number of the device.

Returns: Configuration pointer of the Device whose ID is given.

Note: None.

Referenced by TftExample().

u32 XTft_ReadReg	(	XTft *	InstancePtr,
		u32	RegOffset
	)

Read a value from a TFT register.

A 32 bit read is performed.

Parameters

InstancePtr	is a pointer to the XTft instance.
RegOffset	is the register offset from the base to read from.

Returns: Data read from the register.

Note: None.

References XTft_Config::BaseAddress, XTft::IsReady, and XTft::TftConfig.

Referenced by XTft_DisableDisplay(), XTft_EnableDisplay(), XTft_GetVsyncStatus(), XTft_IntrDisable(), XTft_IntrEnable(), XTft_ScanNormal(), and XTft_ScanReverse().

void XTft_ScanNormal ( XTft * InstancePtr )

This function enables normal scan by clearing the Display Scan Control(DPS) bit in the Control register.

Parameters

InstancePtr is a pointer to the XTft instance.

Returns: None.

Note: None.

References XTft::IsReady, XTFT_CR_DPS_MASK, XTFT_CR_OFFSET, XTft_ReadReg(), and XTft_WriteReg().

void XTft_ScanReverse ( XTft * InstancePtr )

This function enables reverse scan by setting the Display Scan Control(DPS) bit in the Control register.

Parameters

InstancePtr is a pointer to the XTft instance.

Returns: None.

Note: By default the scan direction is reverse, the image we see in reverse scan mode is the horizontal and vertical mirror image of the image in normal scan mode.

References XTft::IsReady, XTFT_CR_DPS_MASK, XTFT_CR_OFFSET, XTft_ReadReg(), and XTft_WriteReg().

void XTft_Scroll ( XTft * InstancePtr )

This function inserts a new blank line at the bottom of the screen, it deletes the first line and moves the remaining lines up by one line.

Parameters

InstancePtr is a pointer to the XTft instance.

Returns: None.

Note: None.

References XTft::BgColor, XTft::IsReady, XTFT_CHAR_HEIGHT, XTFT_DEF_COLVAL, XTFT_DISPLAY_HEIGHT, XTFT_DISPLAY_WIDTH, XTft_FillScreen(), XTft_GetPixel(), and XTft_SetPixel().

Referenced by TftExample(), and XTft_SetPosChar().

void XTft_SetColor	(	XTft *	InstancePtr,
		u32	FgColor,
		u32	BgColor
	)

This function changes the color values in the instance structure of driver.

Parameters

InstancePtr	is a pointer to the XTft instance.
FgColor	is the color with which member FgColor of Instance structure is updated.
BgColor	is the color with which member BgColor of Instance structure is updated.

Returns: None.

Note: Color Values must be 32bit. They can range from 0x0 to 0xFFFFFFFF, out of these only 18 bits are valid data. These 18 bits contain the Red, Green, Blue color values with 6 bits each and bit positions as Red[8-13], Green[16-21], Blue[24-29].

References XTft::BgColor, XTft::FgColor, and XTft::IsReady.

Referenced by TftExample().

void XTft_SetFrameBaseAddr	(	XTft *	InstancePtr,
		UINTPTR	NewFrameBaseAddr
	)

This function changes the Video Memory Base address stored in the Address Register.

Parameters

InstancePtr	is a pointer to the XTft instance.
NewFrameBaseAddr	is the new memory address value to be written to the Address register.

Returns: None.

Note: The new memory address must be in the address range of external memory and it must be taken care that 2MB memory is available from this new address so that frame data to 640*480 screen can be written.

References XTft_Config::AddrWidth, XTft::IsReady, XTft::TftConfig, XTft_Config::VideoMemBaseAddr, XTFT_AR_LSB_OFFSET, XTFT_AR_MSB_OFFSET, XTFT_AR_OFFSET, and XTft_WriteReg().

Referenced by TftExample().

void XTft_SetPixel	(	XTft *	InstancePtr,
		u32	ColVal,
		u32	RowVal,
		u32	PixelVal
	)

This function sets the pixel with the given color at the given column, row position.

Parameters

InstancePtr	is a pointer to the XTft instance.
ColVal	represents the column on the screen. The valid values are 0 to (XTFT_DISPLAY_WIDTH - 1).
RowVal	represents the row on the screen. The valid values are 0 to (XTFT_DISPLAY_HEIGHT - 1).
PixelVal	represents the color with which it will be filled on screen.

Returns: None.

Note: This API is independent of the interface the TFT Controller is connected to. The data is written to the Video Memory.

References XTft::IsReady, XTft::TftConfig, XTft_Config::VideoMemBaseAddr, XTFT_DISPLAY_BUFFER_WIDTH, XTFT_DISPLAY_HEIGHT, and XTFT_DISPLAY_WIDTH.

Referenced by XTft_FillScreen(), and XTft_Scroll().

void XTft_SetPos	(	XTft *	InstancePtr,
		u32	ColVal,
		u32	RowVal
	)

This function updates the column, row position in the Instance structure of driver.

Parameters

InstancePtr	is a pointer to the XTft instance.
ColVal	is the column number to which ColVal member of Instance structure is updated. The valid values are 0 to (XTFT_DISPLAY_WIDTH - 1).
RowVal	is the row number to which RowVal member of Instance structure is updated. The valid values are 0 to (XTFT_DISPLAY_HEIGHT - 1).

Returns: None.

Note: None.

References XTft::ColVal, XTft::IsReady, XTft::RowVal, XTFT_DISPLAY_HEIGHT, and XTFT_DISPLAY_WIDTH.

Referenced by XTft_Write().

void XTft_SetPosChar	(	XTft *	InstancePtr,
		u32	ColVal,
		u32	RowVal
	)

This function changes the column, row position in the Instance structure of driver.

It is used to correct the position for the next character to be written if column and row position cross limits.

Parameters

InstancePtr	is a pointer to the XTft instance.
ColVal	is the column number to which ColVal member of Instance structure is updated. If ColVal crosses (XTFT_DISPLAY_WIDTH - 1) - XTFT_CHAR_WIDTH, position is moved to next line. The valid values are 0 to (XTFT_DISPLAY_WIDTH - 1).
RowVal	is the row number to which RowVal member of Instance structure is updated. If RowVal crosses (XTFT_DISPLAY_HEIGHT - 1)- XTFT_CHAR_HEIGHT, the first line will be deleted. The valid values are 0 to (XTFT_DISPLAY_HEIGHT - 1).

Returns: None.

Note: This function differs from the function XTft_SetPos because you cannot move to any position on the screen as we have to check for enough space for a character to be written.

References XTft::ColVal, XTft::IsReady, XTft::RowVal, XTFT_CHAR_HEIGHT, XTFT_CHAR_WIDTH, XTFT_DEF_COLVAL, XTFT_DISPLAY_HEIGHT, XTFT_DISPLAY_WIDTH, and XTft_Scroll().

Referenced by XTft_Write().

void XTft_Write	(	XTft *	InstancePtr,
		u8	CharValue
	)

This function performs one of the following three operations based on the CharValue passed :

Move the position to the next line at the same position.
Move the position to the next line.
Write a particular character and update the column position by the width of the character.

Parameters

InstancePtr	is a pointer to the XTft instance.
CharValue	is the ASCII code value of the character to be written.

Returns: None.

Note: As the character bitmap array does not support some of the ASCII values, to support some of those which carry significance in display are added in the switch case. If there is a necessity for any other characters, it can be added here.

References XTft::BgColor, XTft::ColVal, XTft::FgColor, XTft::IsReady, XTft::RowVal, XTFT_CHAR_HEIGHT, XTFT_CHAR_WIDTH, XTFT_DEF_COLVAL, XTft_SetPos(), and XTft_SetPosChar().

Referenced by TftExample().

void XTft_WriteReg	(	XTft *	InstancePtr,
		u32	RegOffset,
		u32	Data
	)

Write a value to a TFT register.

A 32 bit write is performed.

Parameters

InstancePtr	is a pointer to the XTft instance.
RegOffset	is the register offset from the base to write to.
Data	is the data written to the register.

Returns: None.

Note: None.

References XTft_Config::BaseAddress, XTft::IsReady, and XTft::TftConfig.

Referenced by XTft_DisableDisplay(), XTft_EnableDisplay(), XTft_IntrDisable(), XTft_IntrEnable(), XTft_ScanNormal(), XTft_ScanReverse(), and XTft_SetFrameBaseAddr().

Variable Documentation

XTft_Config XTft_ConfigTable[]

The configuration table for TFT devices in the table.

Each device should have an entry in this table.

XTft_Config XTft_ConfigTable[]

Initial value:

=
{
        {
                XPAR_TFT_0_DEVICE_ID,
                XPAR_TFT_0_BASEADDR,
                XPAR_TFT_0_DEFAULT_TFT_BASE_ADDR,
                XPAR_TFT_0_ADDR_WIDTH
        }
}

The configuration table for TFT devices in the table.

Each device should have an entry in this table.

u8 XTft_VidChars[96][12]

Character array of 96 characters with each character having dimensions of width 8 and height 12 pixels.

It starts with space as first character.

Data Structures

Macros

Functions

Variables

TFT Register offsets

TFT Control Register (CR) mask(s)

TFT Interrupt Enable and Status Register (IESR) mask(s)

Macro Definition Documentation

Function Documentation

Variable Documentation