system.c

用51模拟的TFT RGB接口驱动程序(HS,VS,DE,PCLK时序)

/****************************************************************************
* 公司名称:SITRONIX         										        *
* 模块名称:SYSTEM.C			                                			    *
* 模块功能:切换屏幕显示，按键扫描，按键处理，TFT RGB信号           			*
* 创建人员:Jim Yuan															*
* 创建日期:2007-6-8															*
* 修改日期:2007-11-22														*
****************************************************************************/

#include "system.h"

#define SYS_INIT          0
#define	LCD_DISP          1
#define KEY_INPUT         2
#define KEY_OUTPUT        3
#define RGB_SCAN		  4

idata volatile uint8 bl_ctl;		 //backlight control
idata volatile uint8 rom_bank;       //A16_A17_A18
idata volatile uint8 rom_cs;         //00:bank0_01:bank1_10:bank2_11:bank3
idata volatile uint8 key_scanx;		 //ken scan address

extern void keyin_task(void);		   //按键扫描输入任务
extern void keyout_task(void);		   //按键读取输出任务
extern void key_init(void);	           //按键参数初试化


void system_init(void)
{
	rom_bank = 0;
	bl_ctl = 0;
	rom_cs = 0;
	key_scanx = 0;
	XBYTE[0X0000] = (rom_bank & 0x07)|((bl_ctl & 0x01)<<3)|((rom_cs & 0x03)<<4)|((key_scanx & 0x03)<<6);
}

void system_delay_lcd(uint8 tt)
{
	uint8 i;
	i = (uint8)tt;
	os_wait(K_TMO,i,0);
}

job0() _task_ SYS_INIT  
{    
	system_init();
	key_init();
	os_create_task (LCD_DISP);

	#if SYS_RGB_SCAN == TRUE
		os_create_task (RGB_SCAN);
	#endif

	#if SYS_KEY_EN == TRUE     
		os_create_task (KEY_INPUT);
		os_create_task (KEY_OUTPUT);
	#endif

    os_delete_task (SYS_INIT);
}

job1() _task_ LCD_DISP
{	 
	lcd_main();
}

#if SYS_KEY_EN == TRUE     
job2() _task_ KEY_INPUT
{	
 	
	while(1)
	{
		keyin_task();
		os_wait(K_TMO,KEY_INPUT_TMO,0);
	}
}

job3() _task_ KEY_OUTPUT
{	
 	
	while(1)
	{
		keyout_task();
		os_wait(K_TMO,KEY_OUTPUT_TMO,0);
	}
}
#endif

#if SYS_RGB_SCAN == TRUE
extern 	void rgb_scan(void);
job4() _task_ RGB_SCAN
{	   	

	while(1)
	{
		rgb_scan();	
	}
}
#endif