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Export a fast but non-standard way to clear the STM3210E-EVAL LCD

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3916 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2011-08-26 16:27:26 +00:00
parent d907adb54e
commit 950bc398ed
2 changed files with 42 additions and 23 deletions
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15
configs/stm3210e-eval/include/board.h
View File

@ -240,6 +240,21 @@ EXTERN xcpt_t up_irqbutton(int id, xcpt_t irqhandler);
#endif
#endif
/************************************************************************************
* Name: stm3210e_lcdclear
*
* Description:
* This is a non-standard LCD interface just for the STM3210E-EVAL board. Because
* of the various rotations, clearing the display in the normal way by writing a
* sequences of runs that covers the entire display can be very slow. Here the
* dispaly is cleared by simply setting all GRAM memory to the specified color.
*
************************************************************************************/
#ifdef CONFIG_STM32_FSMC
EXTERN void stm3210e_lcdclear(uint16_t color);
#endif
#undef EXTERN
#if defined(__cplusplus)
}

50
configs/stm3210e-eval/src/up_lcd.c
View File

@ -59,6 +59,8 @@
#include <nuttx/spi.h>
#include <nuttx/lcd/lcd.h>
#include <arch/board/board.h>
#include "up_arch.h"
#include "stm32.h"
#include "stm32_internal.h"
@ -354,7 +356,6 @@ static int stm3210e_setcontrast(struct lcd_dev_s *dev, unsigned int contrast);
/* Initialization */
static inline void stm3210e_lcdinitialize(void);
static inline void stm3210e_lcdclear(void);
#ifdef CONFIG_LCD_BACKLIGHT
static void stm3210e_backlight(void);
#else
@ -1059,26 +1060,6 @@ static inline void stm3210e_lcdinitialize(void)
}
}
/**************************************************************************************
* Name: stm3210e_lcdclear
*
* Description:
* Clear GRAM
*
**************************************************************************************/
static inline void stm3210e_lcdclear(void)
{
uint32_t i = 0;
stm3210e_setcursor(0, STM3210E_XRES-1);
stm3210e_gramselect();
for (i = 0; i < STM3210E_XRES * STM3210E_YRES; i++)
{
LCD->value = 0; /* Black */
}
}
/**************************************************************************************
* Name: stm3210e_backlight
*
@ -1230,9 +1211,9 @@ int up_lcdinitialize(void)
up_mdelay(50);
stm3210e_lcdinitialize();
/* Clear the display */
/* Clear the display (setting it to the color 0=black) */
stm3210e_lcdclear();
stm3210e_lcdclear(0);
/* Configure the backlight */
@ -1269,3 +1250,26 @@ void up_lcduninitialize(void)
stm32_deselectlcd();
}
/**************************************************************************************
* Name: stm3210e_lcdclear
*
* Description:
* This is a non-standard LCD interface just for the STM3210E-EVAL board. Because
* of the various rotations, clearing the display in the normal way by writing a
* sequences of runs that covers the entire display can be very slow. Here the
* dispaly is cleared by simply setting all GRAM memory to the specified color.
*
**************************************************************************************/
void stm3210e_lcdclear(uint16_t color)
{
uint32_t i = 0;
stm3210e_setcursor(0, STM3210E_XRES-1);
stm3210e_gramselect();
for (i = 0; i < STM3210E_XRES * STM3210E_YRES; i++)
{
LCD->value = color;
}
}