关于红牛板 ili9320LCD 的问题

时间：10-02 整理：3721RD 点击：

typedef struct
{
vu16 LCD_REG;
vu16 LCD_RAM;
} LCD_TypeDef;
/* LCD is connected to the FSMC_Bank1_NOR/SRAM4 and NE4 is used as ship select signal */
#define LCD_BASE ((u32)(0x60000000 | 0x0C000000 ))
#define LCD ((LCD_TypeDef *) LCD_BASE) //这里让LCD指向了0x6C000000也就是LCD_REG
但是后面就有这样的调用：
u16 LCD_ReadReg(u8 LCD_Reg)
{
u16 temp;
/* Write 16-bit Index (then Read Reg) */
LCD->LCD_REG = LCD_Reg;//问：改变了LCD_REG 的值这个值就传到了LCD上了吗?怎么传过去的?
temp = LCD->LCD_RAM;//问：改变了LCD_RAM 就是寄存器的值这个值什么时候更新的?
temp = LCD->LCD_RAM;
return temp;
}
还比如：
u16 LCD_ReadRAM(void)
{
vu16 dummy;
/* Write 16-bit Index (then Read Reg) */
LCD->LCD_REG = R34; /* Select GRAM Reg */
/* Read 16-bit Reg */
dummy = LCD->LCD_RAM;
return dummy;
}

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关于 红牛板 ili9320LCD 的问题