XilinxProcessorIPLib/drivers/tft/examples/xtft_example.c
int TftExample(u32 TftDeviceId)
{
	int Status;
	u8 VarChar;
	XTft_Config *TftConfigPtr;

	/*
	 * Get address of the XTft_Config structure for the given device id.
	 */
	TftConfigPtr = XTft_LookupConfig(TftDeviceId);
	if (TftConfigPtr == (XTft_Config *)NULL) {
		return XST_FAILURE;
	}

	/*
	 * Initialize all the TftInstance members and fills the screen with
	 * default background color.
	 */
	Status = XTft_CfgInitialize(&TftInstance, TftConfigPtr,
				 	TftConfigPtr->BaseAddress);
	if (Status != XST_SUCCESS) {
		return XST_FAILURE;
	}

	/*
	 * Wait till Vsync(Video address latch) status bit is set before writing
	 * the frame address into the Address Register. This ensures that the
	 * current frame has been displayed and we can display a new frame of
	 * data. Checking the Vsync state ensures that there is no data flicker
	 * when displaying frames in real time though there is some delay due to
	 * polling.
	 */
	while (XTft_GetVsyncStatus(&TftInstance) !=
					XTFT_IESR_VADDRLATCH_STATUS_MASK);

	/*
	 * Change the Video Memory Base Address from default value to
	 * a valid Memory Address and clear the screen.
	 */
	XTft_SetFrameBaseAddr(&TftInstance, TFT_FRAME_ADDR);
	XTft_ClearScreen(&TftInstance);

	/*
	 * Initialize the variable VarChar to the value to be displayed on the
	 * screen.
	 * Set the foreground and background colors.
	 */
	VarChar = 'S';
	XTft_SetColor(&TftInstance, FGCOLOR_VALUE, BGCOLOR_VALUE);

	/*
	 * Write the character two times starting from top left corner
	 * (i.e. origin) of screen.
	 */
	XTft_Write(&TftInstance, VarChar);
	XTft_Write(&TftInstance, VarChar);

	/*
	 * Write a string which is displayed next to the two characters
	 * written previously.
	 */
	Status = TftWriteString(&TftInstance, (u8*)"TFT CONTROLLER\n");
	if (Status != XST_SUCCESS) {
		return XST_FAILURE;
	}

	/*
	 * Draw a line between the coordinates (X1,Y1) and (X2,Y2) which
	 * displays a vertical line in white color.
	 * Scroll the screen, so the two characters and string will be
	 * erased on screen.
	 */
	Status = TftDrawLine(&TftInstance, X1POS, Y1POS, X2POS, Y2POS,
				WHITECOLOR_VALUE);
	if (Status != XST_SUCCESS) {
		return XST_FAILURE;
	}
	XTft_Scroll(&TftInstance);

	/*
	 * Disable the display, the screen will be turned off.
	 */
	XTft_DisableDisplay(&TftInstance);

	/*
	 * Even though the screen is turned off, we can still do operations on
	 * video memory.
	 * Scroll the screen.
	 * Draw a line between the coordinates (X1 + 10,Y1) and (X2,Y2) which
	 * is displayed at different position as X1 has some offset.
	 */
	XTft_Scroll(&TftInstance);
	Status = TftDrawLine(&TftInstance, X1POS + 10, Y1POS, X2POS + 10,
				 Y2POS, WHITECOLOR_VALUE);
	if (Status != XST_SUCCESS) {
		return XST_FAILURE;
	}

	/*
	 * Enable the display. Screen will display two lines in white color.
	 * The first line from the left of screen is slightly above the
	 * second one indicating the scroll was successful.
	 */
	XTft_EnableDisplay(&TftInstance);

	return XST_SUCCESS;
}
/*****************************************************************************/
/**
*
* This is the example function which performs the following operations on
* the TFT device -
* - Set the color values of foreground and background
* - Write two characters (S) one after another
* - Write a string of characters
* - Draw a line and scroll the screen once
* - Disable the display (The screen goes blank)
* - Scroll the screen once and draw a line
* - Enable the TFT display
*
* @param	TftDeviceId is the unique Id of the device.
*
* @return
*		- XST_SUCCESS if successful.
*		- XST_FAILURE if unsuccessful.
*
* @note		None.
*
******************************************************************************/
This is the example function which performs the following operations on
the TFT device
Set the color values of foreground and background
Write two characters (S) one after another
Write a string of characters
Draw a line and scroll the screen once
Disable the display (The screen goes blank)
Scroll the screen once and draw a line
Enable the TFT display
This is the example function which performs the following operations on the TFT device Set the color values of foreground and background Write two characters ( S ) one after another Write a string of characters Draw a line and scroll the screen once Disable the display ( The screen goes blank ) Scroll the screen once and draw a line Enable the TFT display
int TftExample(u32 TftDeviceId)
{
	int Status;
	u8 VarChar;
	XTft_Config *TftConfigPtr;
	TftConfigPtr = XTft_LookupConfig(TftDeviceId);
	if (TftConfigPtr == (XTft_Config *)NULL) {
		return XST_FAILURE;
	}
	Status = XTft_CfgInitialize(&TftInstance, TftConfigPtr,
				 	TftConfigPtr->BaseAddress);
	if (Status != XST_SUCCESS) {
		return XST_FAILURE;
	}
	while (XTft_GetVsyncStatus(&TftInstance) !=
					XTFT_IESR_VADDRLATCH_STATUS_MASK);
	XTft_SetFrameBaseAddr(&TftInstance, TFT_FRAME_ADDR);
	XTft_ClearScreen(&TftInstance);
	VarChar = 'S';
	XTft_SetColor(&TftInstance, FGCOLOR_VALUE, BGCOLOR_VALUE);
	XTft_Write(&TftInstance, VarChar);
	XTft_Write(&TftInstance, VarChar);
	Status = TftWriteString(&TftInstance, (u8*)"TFT CONTROLLER\n");
	if (Status != XST_SUCCESS) {
		return XST_FAILURE;
	}
	Status = TftDrawLine(&TftInstance, X1POS, Y1POS, X2POS, Y2POS,
				WHITECOLOR_VALUE);
	if (Status != XST_SUCCESS) {
		return XST_FAILURE;
	}
	XTft_Scroll(&TftInstance);
	XTft_DisableDisplay(&TftInstance);
	XTft_Scroll(&TftInstance);
	Status = TftDrawLine(&TftInstance, X1POS + 10, Y1POS, X2POS + 10,
				 Y2POS, WHITECOLOR_VALUE);
	if (Status != XST_SUCCESS) {
		return XST_FAILURE;
	}
	XTft_EnableDisplay(&TftInstance);
	return XST_SUCCESS;
}
int TftExample ( u32 TftDeviceId ) { int Status ; u8 VarChar ; XTft_Config * TftConfigPtr ; TftConfigPtr = XTft_LookupConfig ( TftDeviceId ) ; if ( TftConfigPtr == ( XTft_Config * ) NULL ) { return XST_FAILURE ; } Status = XTft_CfgInitialize ( & TftInstance , TftConfigPtr , TftConfigPtr -> BaseAddress ) ; if ( Status != XST_SUCCESS ) { return XST_FAILURE ; } while ( XTft_GetVsyncStatus ( & TftInstance ) != XTFT_IESR_VADDRLATCH_STATUS_MASK ) ; XTft_SetFrameBaseAddr ( & TftInstance , TFT_FRAME_ADDR ) ; XTft_ClearScreen ( & TftInstance ) ; VarChar = ' ' ; XTft_SetColor ( & TftInstance , FGCOLOR_VALUE , BGCOLOR_VALUE ) ; XTft_Write ( & TftInstance , VarChar ) ; XTft_Write ( & TftInstance , VarChar ) ; Status = TftWriteString ( & TftInstance , ( u8 * ) " \n " ) ; if ( Status != XST_SUCCESS ) { return XST_FAILURE ; } Status = TftDrawLine ( & TftInstance , X1POS , Y1POS , X2POS , Y2POS , WHITECOLOR_VALUE ) ; if ( Status != XST_SUCCESS ) { return XST_FAILURE ; } XTft_Scroll ( & TftInstance ) ; XTft_DisableDisplay ( & TftInstance ) ; XTft_Scroll ( & TftInstance ) ; Status = TftDrawLine ( & TftInstance , X1POS + 10 , Y1POS , X2POS + 10 , Y2POS , WHITECOLOR_VALUE ) ; if ( Status != XST_SUCCESS ) { return XST_FAILURE ; } XTft_EnableDisplay ( & TftInstance ) ; return XST_SUCCESS ; }
This is the example function which performs the following operations on
the TFT device
 Set the color values of foreground and background
 Write two characters (S) one after another
 Write a string of characters
 Draw a line and scroll the screen once
 Disable the display (The screen goes blank)
 Scroll the screen once and draw a line
 Enable the TFT display
This is the example function which performs the following operations on the TFT device Set the color values of foreground and background Write two characters ( S ) one after another Write a string of characters Draw a line and scroll the screen once Disable the display ( The screen goes blank ) Scroll the screen once and draw a line Enable the TFT display
/*
	 * Get address of the XTft_Config structure for the given device id.
	 */ /*
	 * Initialize all the TftInstance members and fills the screen with
	 * default background color.
	 */ /*
	 * Wait till Vsync(Video address latch) status bit is set before writing
	 * the frame address into the Address Register. This ensures that the
	 * current frame has been displayed and we can display a new frame of
	 * data. Checking the Vsync state ensures that there is no data flicker
	 * when displaying frames in real time though there is some delay due to
	 * polling.
	 */ /*
	 * Change the Video Memory Base Address from default value to
	 * a valid Memory Address and clear the screen.
	 */ /*
	 * Initialize the variable VarChar to the value to be displayed on the
	 * screen.
	 * Set the foreground and background colors.
	 */ /*
	 * Write the character two times starting from top left corner
	 * (i.e. origin) of screen.
	 */ /*
	 * Write a string which is displayed next to the two characters
	 * written previously.
	 */ /*
	 * Draw a line between the coordinates (X1,Y1) and (X2,Y2) which
	 * displays a vertical line in white color.
	 * Scroll the screen, so the two characters and string will be
	 * erased on screen.
	 */ /*
	 * Disable the display, the screen will be turned off.
	 */ /*
	 * Even though the screen is turned off, we can still do operations on
	 * video memory.
	 * Scroll the screen.
	 * Draw a line between the coordinates (X1 + 10,Y1) and (X2,Y2) which
	 * is displayed at different position as X1 has some offset.
	 */ /*
	 * Enable the display. Screen will display two lines in white color.
	 * The first line from the left of screen is slightly above the
	 * second one indicating the scroll was successful.
	 */