液晶驱动C语言

#include \#include \

static vu16 TextColor = 0x0000, BackColor = 0xFFFF;

/*******************************************************************************

* Function Name : Delay_LCD

* Description : Inserts a delay time.

* Input : nCount: specifies the delay time length. * Output : None * Return : None

*******************************************************************************/

void Delay_LCD(u16 n) { u16 i,j; for (i = 0;i

/*******************************************************************************

* Function Name : STM3210B_LCD_Init * Description : Initializes the LCD. * Input : None * Output : None * Return : None

*******************************************************************************/

void STM3210B_LCD_Init(void) { vu16 dummy = 0; //总线配置 LCD_CtrlLinesConfig(); LCD_WriteReg(0x0000,0x0001); Delay_LCD(1000); LCD_WriteReg(0x0001,0x0000); LCD_WriteReg(0x0010,0x1790); LCD_WriteReg(0x0060,0x2700); LCD_WriteReg(0x0061,0x0001); LCD_WriteReg(0x0046,0x0002); LCD_WriteReg(0x0013,0x8010); LCD_WriteReg(0x0012,0x80fe);

LCD_WriteReg(0x0002,0x0500); LCD_WriteReg(0x0003,0x1030); LCD_WriteReg(0x0030,0x0303); LCD_WriteReg(0x0031,0x0303); LCD_WriteReg(0x0032,0x0303); LCD_WriteReg(0x0033,0x0300); LCD_WriteReg(0x0034,0x0003); LCD_WriteReg(0x0035,0x0303); LCD_WriteReg(0x0036,0x0014); LCD_WriteReg(0x0037,0x0303); LCD_WriteReg(0x0038,0x0303); LCD_WriteReg(0x0039,0x0303); LCD_WriteReg(0x003a,0x0300); LCD_WriteReg(0x003b,0x0003); LCD_WriteReg(0x003c,0x0303); LCD_WriteReg(0x003d,0x1400); LCD_WriteReg(0x0092,0x0200); LCD_WriteReg(0x0093,0x0303); LCD_WriteReg(0x0090,0x080d); LCD_WriteReg(0x0003,0x1018); LCD_WriteReg(0x0007,0x0173); dummy = LCD_ReadReg(0); }

/*******************************************************************************

* Function Name : LCD_SetTextColor * Description : Sets the Text color.

* Input : - Color: specifies the Text color code RGB(5-6-5).

* Output : - TextColor: Text color global variable used by LCD_DrawChar * and LCD_DrawPicture functions. * Return : None

*******************************************************************************/

void LCD_SetTextColor(vu16 Color) { TextColor = Color; }

/*******************************************************************************

* Function Name : LCD_SetBackColor

* Description : Sets the Background color.

* Input : - Color: specifies the Background color code RGB(5-6-5). * Output : - BackColor: Background color global variable used by * LCD_DrawChar and LCD_DrawPicture functions. * Return : None

*******************************************************************************/

void LCD_SetBackColor(vu16 Color) { BackColor = Color; }

/*******************************************************************************

* Function Name : LCD_ClearLine

* Description : Clears the selected line.

* Input : - Line: the Line to be cleared.

* This parameter can be one of the following values: * - Linex: where x can be 0..9 * Output : None * Return : None

*******************************************************************************/

void LCD_ClearLine(u8 Line) { LCD_DisplayStringLine(Line, \ \}

/*******************************************************************************

* Function Name : LCD_Clear

* Description : Clears the hole LCD.

* Input : Color: the color of the background. * Output : None * Return : None

*******************************************************************************/

void LCD_Clear(u16 Color) { u32 index = 0; LCD_SetCursor(0x00, 0x0000); LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */ for(index = 0; index < 76800; index++) { LCD_WriteRAM(Color); } }

/*******************************************************************************

* Function Name : LCD_SetCursor

* Description : Sets the cursor position.

* Input : - Xpos: specifies the X position. * - Ypos: specifies the Y position. * Output : None * Return : None

*******************************************************************************/

void LCD_SetCursor(u8 Xpos, u16 Ypos) { LCD_WriteReg(R32, Xpos); LCD_WriteReg(R33, Ypos); }

/*******************************************************************************

* Function Name : LCD_DrawChar

* Description : Draws a character on LCD.

* Input : - Xpos: the Line where to display the character shape. * This parameter can be one of the following values: * - Linex: where x can be 0..9 * - Ypos: start column address. * - c: pointer to the character data. * Output : None * Return : None

*******************************************************************************/

void LCD_DrawChar(u8 Xpos, u16 Ypos, uc16 *c) { u32 index = 0, i = 0; u8 Xaddress = 0; Xaddress = Xpos; LCD_SetCursor(Xaddress, Ypos); for(index = 0; index < 24; index++) { LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */ for(i = 0; i < 16; i++) { if((c[index] & (1 << i)) == 0x00) { LCD_WriteRAM(BackColor);

} else { LCD_WriteRAM(TextColor); } } Xaddress++; LCD_SetCursor(Xaddress, Ypos); } }

/*******************************************************************************

* Function Name : LCD_DisplayChar

* Description : Displays one character (16dots width, 24dots height). * Input : - Line: the Line where to display the character shape . * This parameter can be one of the following values: * - Linex: where x can be 0..9 * - Column: start column address.

* - Ascii: character ascii code, must be between 0x20 and 0x7E. * Output : None * Return : None

*******************************************************************************/

void LCD_DisplayChar(u8 Line, u16 Column, u8 Ascii) { Ascii -= 32; LCD_DrawChar(Line, Column, &ASCII_Table[Ascii * 24]); }

/*******************************************************************************

* Function Name : LCD_DisplayStringLine

* Description : Displays a maximum of 20 char on the LCD.

* Input : - Line: the Line where to display the character shape . * This parameter can be one of the following values: * - Linex: where x can be 0..9

* - *ptr: pointer to string to display on LCD. * Output : None * Return : None

*******************************************************************************/

void LCD_DisplayStringLine(u8 Line, u8 *ptr) { u32 i = 0; u16 refcolumn = 319;//319;

while ((*ptr != 0) && (i < 20)) // 20 { LCD_DisplayChar(Line, refcolumn, *ptr); refcolumn -= 16; ptr++; i++; } }

/*******************************************************************************

* Function Name : LCD_SetDisplayWindow * Description : Sets a display window

* Input : - Xpos: specifies the X buttom left position. * - Ypos: specifies the Y buttom left position. * - Height: display window height. * - Width: display window width. * Output : None * Return : None

*******************************************************************************/

void LCD_SetDisplayWindow(u8 Xpos, u16 Ypos, u8 Height, u16 Width) { if(Xpos >= Height) { LCD_WriteReg(R80, (Xpos - Height + 1)); } else { LCD_WriteReg(R80, 0); } LCD_WriteReg(R81, Xpos); if(Ypos >= Width) { LCD_WriteReg(R82, (Ypos - Width + 1)); } else { LCD_WriteReg(R82, 0); } /* Vertical GRAM End Address */ LCD_WriteReg(R83, Ypos); LCD_SetCursor(Xpos, Ypos); }

/*******************************************************************************

* Function Name : LCD_WindowModeDisable * Description : Disables LCD Window mode. * Input : None * Output : None * Return : None

*******************************************************************************/

void LCD_WindowModeDisable(void) { LCD_SetDisplayWindow(239, 0x13F, 240, 320); LCD_WriteReg(R3, 0x1018); }

/*******************************************************************************

* Function Name : LCD_DrawLine * Description : Displays a line.

* Input : - Xpos: specifies the X position. * - Ypos: specifies the Y position. * - Length: line length. * - Direction: line direction.

* This parameter can be one of the following values: Vertical * or Horizontal. * Output : None * Return : None

*******************************************************************************/

void LCD_DrawLine(u8 Xpos, u16 Ypos, u16 Length, u8 Direction) { u32 i = 0; LCD_SetCursor(Xpos, Ypos); if(Direction == Horizontal) { LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */ for(i = 0; i < Length; i++) { LCD_WriteRAM(TextColor); } } else { for(i = 0; i < Length; i++)

{ LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */ LCD_WriteRAM(TextColor); Xpos++; LCD_SetCursor(Xpos, Ypos); } } }

/*******************************************************************************

* Function Name : LCD_DrawRect * Description : Displays a rectangle.

* Input : - Xpos: specifies the X position. * - Ypos: specifies the Y position. * - Height: display rectangle height. * - Width: display rectangle width. * Output : None * Return : None

*******************************************************************************/

void LCD_DrawRect(u8 Xpos, u16 Ypos, u8 Height, u16 Width) { LCD_DrawLine(Xpos, Ypos, Width, Horizontal); LCD_DrawLine((Xpos + Height), Ypos, Width, Horizontal); LCD_DrawLine(Xpos, Ypos, Height, Vertical); LCD_DrawLine(Xpos, (Ypos - Width + 1), Height, Vertical); }

/*******************************************************************************

* Function Name : LCD_DrawCircle * Description : Displays a circle.

* Input : - Xpos: specifies the X position. * - Ypos: specifies the Y position. * - Height: display rectangle height. * - Width: display rectangle width. * Output : None * Return : None

*******************************************************************************/

void LCD_DrawCircle(u8 Xpos, u16 Ypos, u16 Radius) { s32 D; u32 CurX;

u32 CurY;

D = 3 - (Radius << 1); CurX = 0;

CurY = Radius;

while (CurX <= CurY) {

LCD_SetCursor(Xpos + CurX, Ypos + CurY);

LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */ LCD_WriteRAM(TextColor);

LCD_SetCursor(Xpos + CurX, Ypos - CurY);

LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */ LCD_WriteRAM(TextColor);

LCD_SetCursor(Xpos - CurX, Ypos + CurY);

LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */ LCD_WriteRAM(TextColor);

LCD_SetCursor(Xpos - CurX, Ypos - CurY);

LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */ LCD_WriteRAM(TextColor);

LCD_SetCursor(Xpos + CurY, Ypos + CurX);

LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */ LCD_WriteRAM(TextColor);

LCD_SetCursor(Xpos + CurY, Ypos - CurX);

LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */ LCD_WriteRAM(TextColor);

LCD_SetCursor(Xpos - CurY, Ypos + CurX);

LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */ LCD_WriteRAM(TextColor);

LCD_SetCursor(Xpos - CurY, Ypos - CurX);

LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */ LCD_WriteRAM(TextColor);

if (D < 0) {

D += (CurX << 2) + 6; }

else { D += ((CurX - CurY) << 2) + 10; CurY--; } CurX++; } }

/*******************************************************************************

* Function Name : LCD_DrawMonoPict

* Description : Displays a monocolor picture. * Input : - Pict: pointer to the picture array. * Output : None * Return : None

*******************************************************************************/

void LCD_DrawMonoPict(uc32 *Pict) { u32 index = 0, i = 0; LCD_SetCursor(0, 319); LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */ for(index = 0; index < 2400; index++) { for(i = 0; i < 32; i++) { if((Pict[index] & (1 << i)) == 0x00) { LCD_WriteRAM(BackColor); } else { LCD_WriteRAM(TextColor); } } } }

/*******************************************************************************

* Function Name : LCD_WriteBMP

* Description : Displays a bitmap picture loaded in the internal Flash. * Input : - BmpAddress: Bmp picture address in the internal Flash.

* Output : None * Return : None

*******************************************************************************/

void LCD_WriteBMP(u32 BmpAddress) { u32 index = 0, size = 0; size = *(vu16 *) (BmpAddress + 2); size |= (*(vu16 *) (BmpAddress + 4)) << 16; index = *(vu16 *) (BmpAddress + 10); index |= (*(vu16 *) (BmpAddress + 12)) << 16; size = (size - index)/2; BmpAddress += index; LCD_WriteReg(R3, 0x1008); LCD_WriteRAM_Prepare(); for(index = 0; index < size; index++) { LCD_WriteRAM(*(vu16 *)BmpAddress); BmpAddress += 2; } LCD_WriteReg(R3, 0x1018); }

/*******************************************************************************

* Function Name : LCD_WriteReg

* Description : Writes to the selected LCD register.

* Input : - LCD_Reg: address of the selected register.

* - LCD_RegValue: value to write to the selected register. * Output : None * Return : None

*******************************************************************************/

void LCD_WriteReg(u8 LCD_Reg, u16 LCD_RegValue) { GPIOB->BRR = 0x0200; //LCD_NCS_LOW(); GPIOB->BRR = 0x0100; //LCD_RS_LOW(); GPIOB->BSRR = 0x0020; //LCD_NWR_HIGH(); GPIOC->ODR = LCD_Reg; //GPIO_Write(LCD_DataPort,LCD_Reg); GPIOB->BRR = 0x0020; //LCD_NWR_LOW(); GPIOB->BSRR = 0x0020; //LCD_NWR_HIGH();

GPIOB->BSRR = 0x0100; //LCD_RS_HIGH(); GPIOC->ODR = LCD_RegValue; //GPIO_Write(LCD_DataPort,LCD_RegValue); GPIOB->BRR = 0x0020; //LCD_NWR_LOW(); GPIOB->BSRR = 0x0020; //LCD_NWR_HIGH(); GPIOB->BSRR = 0x0100; //LCD_RS_HIGH(); }

/*******************************************************************************

* Function Name : LCD_ReadReg

* Description : Reads the selected LCD Register. * Input : None * Output : None

* Return : LCD Register Value.

*******************************************************************************/

u16 LCD_ReadReg(u8 LCD_Reg) { u16 temp; GPIOB->BRR = 0x0200; //LCD_NCS_LOW(); GPIOB->BRR = 0x0100; //LCD_RS_LOW(); GPIOB->BSRR = 0x0020; //LCD_NWR_HIGH(); GPIOC->ODR = LCD_Reg; //GPIO_Write(LCD_DataPort,LCD_Reg); GPIOB->BRR = 0x0020; //LCD_NWR_LOW(); GPIOB->BSRR = 0x0020; //LCD_NWR_HIGH(); GPIOB->BSRR = 0x0100; //LCD_RS_HIGH(); LCD_BusIn(); GPIOB->BRR = 0x0400; //LCD_NRD_LOW(); temp = GPIOC->IDR; //temp=GPIO_ReadInputData(LCD_DataPort); GPIOB->BSRR = 0x0400; //LCD_NRD_HIGH(); LCD_BusOut(); GPIOB->BSRR = 0x0200; //LCD_NCS_HIGH(); return temp; }

/*******************************************************************************

* Function Name : LCD_WriteRAM_Prepare

* Description : Prepare to write to the LCD RAM. * Input : None

* Output : None * Return : None

*******************************************************************************/

void LCD_WriteRAM_Prepare(void) { GPIOB->BRR = 0x0200; //LCD_NCS_LOW(); GPIOB->BRR = 0x0100; //LCD_RS_LOW(); GPIOB->BSRR = 0x0020; //LCD_NWR_HIGH(); GPIOC->ODR = R34; //GPIO_Write(LCD_DataPort,R34); GPIOB->BRR = 0x0020; //LCD_NWR_LOW(); GPIOB->BSRR = 0x0020; //LCD_NWR_HIGH(); GPIOB->BSRR = 0x0100; //LCD_RS_HIGH(); GPIOB->BSRR = 0x0200; //LCD_NCS_HIGH(); }

/*******************************************************************************

* Function Name : LCD_WriteRAM

* Description : Writes to the LCD RAM.

* Input : - RGB_Code: the pixel color in RGB mode (5-6-5). * Output : None * Return : None

*******************************************************************************/

void LCD_WriteRAM(u16 RGB_Code) { GPIOB->BRR = 0x0200; //LCD_NCS_LOW(); GPIOB->BSRR = 0x0100; //LCD_RS_HIGH(); GPIOB->BSRR = 0x0020; //LCD_NWR_HIGH(); GPIOC->ODR = RGB_Code; //GPIO_Write(LCD_DataPort,RGB_Code); GPIOB->BRR = 0x0020; //LCD_NWR_LOW(); GPIOB->BSRR = 0x0020; //LCD_NWR_HIGH(); GPIOB->BSRR = 0x0100; //LCD_RS_HIGH(); GPIOB->BSRR = 0x0200; //LCD_NCS_HIGH(); }

/*******************************************************************************

* Function Name : LCD_ReadRAM * Description : Reads the LCD RAM. * Input : None

* Output : None

* Return : LCD RAM Value.

*******************************************************************************/

u16 LCD_ReadRAM(void) { u16 temp; GPIOB->BRR = 0x0200; //LCD_NCS_LOW(); GPIOB->BRR = 0x0100; //LCD_RS_LOW(); GPIOB->BSRR = 0x0020; //LCD_NWR_HIGH(); GPIOC->ODR = R34; //GPIO_Write(LCD_DataPort,R34); GPIOB->BRR = 0x0020; //LCD_NWR_LOW(); GPIOB->BSRR = 0x0020; //LCD_NWR_HIGH(); GPIOB->BSRR = 0x0100; //LCD_RS_HIGH(); LCD_BusIn(); GPIOB->BRR = 0x0400; //LCD_NRD_LOW(); temp = GPIOC->IDR; //temp=GPIO_ReadInputData(LCD_DataPort); GPIOB->BSRR = 0x0400; //LCD_NRD_HIGH(); LCD_BusOut(); GPIOB->BSRR = 0x0200; //LCD_NCS_HIGH(); return temp; }

/*******************************************************************************

* Function Name : LCD_PowerOn * Description : Power on the LCD. * Input : None * Output : None * Return : None

*******************************************************************************/

void LCD_PowerOn(void) { LCD_WriteReg(R16, 0x0000); LCD_WriteReg(R17, 0x0000); LCD_WriteReg(R18, 0x0000); LCD_WriteReg(R19, 0x0000); Delay_LCD(20); LCD_WriteReg(R16, 0x17B0);

LCD_WriteReg(R17, 0x0137); Delay_LCD(5); LCD_WriteReg(R18, 0x0139); Delay_LCD(5); LCD_WriteReg(R19, 0x1d00); LCD_WriteReg(R41, 0x0013); Delay_LCD(5); LCD_WriteReg(R7, 0x0173); }

/*******************************************************************************

* Function Name : LCD_DisplayOn * Description : Enables the Display. * Input : None * Output : None * Return : None

*******************************************************************************/

void LCD_DisplayOn(void) { LCD_WriteReg(R7, 0x0173); }

/*******************************************************************************

* Function Name : LCD_DisplayOff * Description : Disables the Display. * Input : None * Output : None * Return : None

*******************************************************************************/

void LCD_DisplayOff(void) { LCD_WriteReg(R7, 0x0); }

/*******************************************************************************

* Function Name : LCD_CtrlLinesConfig

* Description : Configures LCD Control lines. Push-Pull mode. * Input : None * Output : None * Return : None

*******************************************************************************

/

void LCD_CtrlLinesConfig(void) { GPIO_InitTypeDef GPIO_InitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOC , ENABLE); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9 | GPIO_Pin_5 | GPIO_Pin_8 | GPIO_Pin_10; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_Init(GPIOB, &GPIO_InitStructure); LCD_BusOut(); GPIOB->BSRR |= 0x0620; }

/*******************************************************************************

* Function Name : LCD_BusIn

* Description : Configures the Parallel interface for LCD(PortC) * Input : None * Output : None * Return : None

*******************************************************************************/

void LCD_BusIn(void) { GPIO_InitTypeDef GPIO_InitStructure; GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; GPIO_Init(GPIOC, &GPIO_InitStructure); }

/*******************************************************************************

* Function Name : LCD_BusOut

* Description : Configures the Parallel interface for LCD(PortC) * Input : None * Output : None * Return : None

*******************************************************************************/

void LCD_BusOut(void)

{ GPIO_InitTypeDef GPIO_InitStructure; GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_Init(GPIOC, &GPIO_InitStructure); }

/*******************************************************************************

* Function Name : LCD_DrawPicture

* Description : Displays a 16 color picture.

* Input : - picture: pointer to the picture array. * Output : None * Return : None

*******************************************************************************/

void LCD_DrawPicture(const u8* picture) { int index; LCD_SetCursor(0x00, 0x0000); LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */ for(index = 0; index < 76800; index++) { LCD_WriteRAM(picture[2*index+1]<<8|picture[2*index]); } }

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