lcd_portconfig.h

用ARM7 LPC2292芯片驱动240128图形点阵液晶的源代码

//note:如果您使用C语言编写LCD的底层接口程序的话，这里的定义才会有用
// this file for MCU I/O port or the orther`s hardware config 
// for LCD Display 
#include "LPC22XX.h"
//#include "intrins.h"			//包含此头文件可直接操作内核的寄存器以及一些定义好的宏

#define LCD_Ctrl_GPIO()		PINSEL1 &= ~(0xffff0000)
#define LCD_Ctrl_Out()		IODIR0 |= (LCD_CS+LCD_RE+LCD_A0+LCD_WR+LCD_RD+LCD_FS)
#define LCD_Ctrl_Set(n)		IOSET0 = n
#define LCD_Ctrl_Clr(n)		IOCLR0 = n

#define LCD_CS				(0x01<<27)
#define LCD_CS_SET()		IOSET0 = LCD_CS
#define LCD_CS_CLR()		IOCLR0 = LCD_CS

#define LCD_RE				(0x01<<29)
#define LCD_RE_SET()		IOSET0 = LCD_RE
#define LCD_RE_CLR()		IOCLR0 = LCD_RE

#define LCD_A0				(0x01<<28)
#define LCD_A0_SET()		IOSET0 = LCD_A0
#define LCD_A0_CLR()		IOCLR0 = LCD_A0

#define LCD_WR				(0x01<<24)
#define LCD_WR_SET()		IOSET0 = LCD_WR
#define LCD_WR_CLR()		IOCLR0 = LCD_WR

#define LCD_RD				(0x01<<25)
#define LCD_RD_SET()		IOSET0 = LCD_RD
#define LCD_RD_CLR()		IOCLR0 = LCD_RD

#define LCD_FS				(0x01<<30)
#define LCD_FS_SET()		IOSET0 = LCD_FS
#define LCD_FS_CLR()		IOCLR0 = LCD_FS

#define LCD_Data_GPIO()		PINSEL1 &= ~(0x0000ffff)		
#define LCD_Data_Out()		IODIR0 |= (0xff<<16)
#define LCD_Data_In()		IODIR0 &= ~(0xff<<16)
#define LCD_Data_BUS_Clr()	IOCLR0 = (0xff<<16)
#define LCD_Data_BUS_Set(n)	IOSET0 = (n<<16)
#define LCD_Data_Read()		((IOPIN0&(0xff<<16))>>16)

#define LCD_Data_BUS_Byte	2
//定义8位的数据线占用端口的哪些位置，0: Port0~Port7
//									 1: Port8~Port15
//									 2: Port16~Port23
//									 3: Port24~Port31