// Write a command word
void lcd_write_cmd(int command)
{
lcd_dma_ready();
LCD_RS_LOW();
lcd_write(command);
lcd_dma_ready();
LCD_RS_HIGH();
}
void LCD_CHAR(unsigned char data)
{
LCD_E_LOW();
LCD_RS_HIGH();
LCD_DATA(data);
LCD_E_HIGH();
tme_tempo(1);
LCD_E_LOW();
}
// Write register
void lcd_write_reg(int reg, int command)
{
lcd_dma_ready();
LCD_RS_LOW();
lcd_write(reg);
lcd_dma_ready();
LCD_RS_HIGH();
lcd_write(command);
}
/*******************************************************************************
LCD_WR_REG: Set LCD Register Input: Register addr., Data
*******************************************************************************/
void LCD_WR_REG(unsigned short Reg, unsigned short Data)
{
LDC_DATA_OUT=Reg; //Reg. Addr.
LCD_RS_LOW(); //RS=0,Piont to Index Reg.
LCD_nWR_ACT(); //WR Cycle from 1 -> 0 -> 1
LCD_RS_HIGH(); //RS=1,Piont to object Reg.
LDC_DATA_OUT=Data; //Reg. Data
LCD_nWR_ACT(); //WR Cycle from 1 -> 0 -> 1
}
/*******************************************************************************
Point_SCR: Set display position Input: X, Y
*******************************************************************************/
void Point_SCR(unsigned short x0, unsigned short y0)
{
LCD_WR_REG(0x0020,y0);
LCD_WR_REG(0x0021,x0);
LDC_DATA_OUT=0x0022; //DRAM Reg.
LCD_RS_LOW();
LCD_nWR_ACT(); //WR Cycle from 1 -> 0 -> 1
LCD_nWR_ACT(); //WR Cycle from 1 -> 0 -> 1
LCD_RS_HIGH();
}
/*************************************************************************
* Function Name: HD44780WrData
* Parameters: Int8U Data
* Return: none
* Description: Write data to HD44780
*
*************************************************************************/
static void HD44780WrData (Int8U Data)
{
LCD_RS_HIGH();
#if HD44780_BUS_WIDTH == 8
HD44780WrIO(Data);
#else
HD44780WrIO((Data>>4) & 0xF);
HD44780WrIO(Data & 0xF);
#endif
}
/*************************************************************************
* Function Name: HD44780RdData
* Parameters: none
* Return: Int8U
* Description: Read data from HD44780
*
*************************************************************************/
static Int8U HD44780RdData (void)
{
Int8U Data;
LCD_RS_HIGH();
#if HD44780_BUS_WIDTH == 8
Data = HD44780RdIO();
#else
Data = (HD44780RdIO() << 4) & 0xF0;
Data |= HD44780RdIO() & 0x0F;
#endif
return Data;
}
void lcd_write_data(unsigned char data)
{
OS_CPU_SR_ALLOC();
OS_ENTER_CRITICAL();
LCD_RS_HIGH();
LCD_CS_LOW();
lcd_send_byte(data);
LCD_CS_HIGH();
OS_EXIT_CRITICAL();
}
//************************************************************************************
//*函数名称:void LCD_Write(unsigned char Data_Command , unsigned char uc_Content ) *
//*函数功能:并行模式向LCD发送数据或指令 *
//*形式参数:unsigned char Data_Command , unsigned char uc_Content *
//*形参说明:数据或指令的标志位,指令或数据的内容 *
//*返回参数:无 *
//*使用说明:无 *
//************************************************************************************
void LCD_Write( unsigned char Data_Command , unsigned char uc_Content )
{
#if PARALLEL == 1
LCD_CheckBusy();
LCD_DATA_OUT();
if(Data_Command)
{
LCD_RS_HIGH(); //RS = 1; //数据
//LCD_RW_LOW(); //RW = 0; //写模式
}
else
{
LCD_RS_LOW(); //RS = 0; //指令
//LCD_RW_LOW(); //RW = 0; //写模式
}
LCD_RW_LOW(); //RW = 0; //写模式
LCD_DATA_PORT = uc_Content;//数据放到P1口上
LCD_E_HIGH(); //E = 1;
_delay_us(1); //延时
//_nop_();//很重要
//_nop_();
//_nop_();
LCD_E_LOW(); //E = 0;
#else
unsigned char temp;
LCD_CheckBusy();
if(Data_Command)
{
temp = 0xFA; //RS = 1,数据; RW = 0,写模式
}
else
{
temp = 0xF8; //RS = 0,指令; RW = 0,写模式
}
LCD_SendByte(temp);
temp = uc_Content&0xF0;
LCD_SendByte(temp);
temp = (uc_Content<<4)&0xF0;
LCD_SendByte(temp);
#endif //#if PARALLEL == 1
}
/*******************************************************************************
LCD_SET_WINDOW: 设置LCD模块上指定的窗口位置。 输入: x0、x1、y0、y1
*******************************************************************************/
void LCD_SET_WINDOW(short x1, short x2,short y1, short y2)
{
__LCD_WR_REG(0x0050, y1);
__LCD_WR_REG(0x0051, y2);
__LCD_WR_REG(0x0052, x1);
__LCD_WR_REG(0x0053, x2);
__LCD_WR_REG(0x0020, y1);
__LCD_WR_REG(0x0021, x1);
LDC_DATA_OUT=0x0022; //Reg. Addr.
LCD_RS_LOW(); //RS=0,Piont to Index Reg.
LCD_nWR_ACT(); //WR Cycle from 1 -> 0 -> 1
LCD_nWR_ACT(); //WR Cycle from 1 -> 0 -> 1
LCD_RS_HIGH(); //RS=1,Piont to object Reg.
}
//********************************************
//*函数名称:LCD_ReadData *
//*函数功能:并行读LCD数据 *
//*形式参数:无 *
//*形参说明:无 *
//*返回参数:读回的数据 *
//*使用说明:无 *
//********************************************
unsigned char LCD_ReadData(void)
{
#if PARALLEL == 1
unsigned char uc_Content;
LCD_CheckBusy();
//_delay_us(2);
LCD_DATA_IN(); //P1 = 0xff;//输入前置1
LCD_RS_HIGH(); //RS = 1; //数据
LCD_RW_HIGH(); //RW = 1; //读模式
LCD_E_HIGH(); //E = 1; //使能
_delay_us(1); //延时很重要
uc_Content = LCD_DATA_GET(); //uc_Content = P1; //P1口的内容放到变量中
LCD_E_LOW(); //E = 0;
_delay_us(1); //延时很重要
return uc_Content;
#endif //#if PARALLEL == 1
}
static void LCD_DATA(uint8_t data)
{
LCD_RS_HIGH();
spi_write(&device, &data, 1, true);
}
/*******************************************************************************
LCD initializtion
*******************************************************************************/
void LCD_Initial(void)
{
//------------------------- Reset LCD Driver ---------------------//
LCD_DATA_BUS_OUT(); //Set LCD Data Bus as Output Mode
LCD_nWR_HIGH();
LCD_nRD_HIGH();
LCD_RS_HIGH(); //RS=1
LCD_nRST_HIGH();
Delayms(1); //RST=1£¬Delay 1ms
LCD_nRST_LOW();
Delayms(1); //RST=0 Reset LCD£¬Delay 1ms
LCD_nRST_HIGH();
Delayms(5); //RST=1£¬Delay 5 ms
//----------------ST7781 Internal Register Initial------------//
LCD_WR_REG(0x00FF, 0x0001);
LCD_WR_REG(0x00F3, 0x0008);
LDC_DATA_OUT=0x00F3;
LCD_RS_LOW();
LCD_nWR_ACT(); //Read Parameter
LCD_RS_HIGH();
//-------------------Display Control Setting-----------------//
LCD_WR_REG(0x0001, 0x0100); //Output Direct
LCD_WR_REG(0x0002, 0x0700); //Line Inversion
LCD_WR_REG(0x0003, 0x0030); //BGR=0,ID=11
LCD_WR_REG(0x0008, 0x0302); //Porch Setting
LCD_WR_REG(0x0009, 0x0000); //Scan Cycle
LCD_WR_REG(0x000A, 0x0000); //FMARK off
//----------------power Control Register Initial------------//
LCD_WR_REG(0x0010, 0x0790); //Power Control1
LCD_WR_REG(0x0011, 0x0005); //Power Control2
LCD_WR_REG(0x0012, 0x0000); //Power Control3
LCD_WR_REG(0x0013, 0x0000); //Power Control4
Delayms(100); //Delay 100ms
LCD_WR_REG(0x0010, 0x12B0); //Power Control1
Delayms(50); //delay 50ms
LCD_WR_REG(0x0011, 0x0007); //Power Control2
Delayms(50); //delay 50ms
LCD_WR_REG(0x0012, 0x008C); //Power Control3
LCD_WR_REG(0x0013, 0x1700); //Power Control4
LCD_WR_REG(0x0029, 0x001A); //VCOMH Setting
Delayms(50); //delay 50ms
//------------------GAMMA Cluster Setting-------------------//
LCD_WR_REG(0x0030, 0x0000);
LCD_WR_REG(0x0031, 0x0507);
LCD_WR_REG(0x0032, 0x0003);
LCD_WR_REG(0x0035, 0x0200);
LCD_WR_REG(0x0036, 0x0106);
LCD_WR_REG(0x0037, 0x0000);
LCD_WR_REG(0x0038, 0x0507);
LCD_WR_REG(0x0039, 0x0104);
LCD_WR_REG(0x003C, 0x0200);
LCD_WR_REG(0x003D, 0x0005);
//------------------Display Windows 240*320-----------------//
LCD_WR_REG(0x0050, 0x0000);
LCD_WR_REG(0x0051, 0x00EF);
LCD_WR_REG(0x0052, 0x0000);
LCD_WR_REG(0x0053, 0x013F);
//--------------------Frame Rate Setting--------------------//
LCD_WR_REG(0x0060, 0xA700);
LCD_WR_REG(0x0061, 0x0001);
LCD_WR_REG(0x0090, 0x0033);
LCD_WR_REG(0x0007, 0x0133);
Delayms(50); //delay 50ms
}