Posted on March 25, 2013 at 15:34Hi,
You have to first calculate your base address. For example base address of Bank1 of NOR/SRAM Bank1~4 is 0x60000000.
This address (0x60000000) is your command address.
Then according to your Address line pin you have to calculate data address.For A16 you can callculate like this;
RAM base address = 0X60020000 = 0X60000000 +2 ^ 16 * 2 = 0X60000000 + 0X20000 = 0X60020000
This address is your data address.
Example code:
#define Bank1_LCD_D ((uint32_t) 0x60020000) // Disp Data ADDR for A16
#define Bank1_LCD_C ((uint32_t) 0x60000000) // Disp Reg ADDR
void LCD_WR_REG(__IO u16 index)
{
((*(__IO u16 *) (Bank1_LCD_C)) = ((u16)index));
}
void LCD_WR_CMD(__IO u16 index,__IO u16 val)
{
(*(__IO u16 *) (Bank1_LCD_C)) = ((u16)index);
(*(__IO u16 *) (Bank1_LCD_D)) = ((u16)(val));
}
void LCD_WR_Data(__IO u16 val)
{
((*(__IO u16 *) (Bank1_LCD_D)) = ((u16)(val)));
}
source:
http://blog.csdn.net/licaihuameng/article/details/7660615
Have a nice day!
