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FreeRTOS-Kernel/Demo/CORTEX_STM32F107_GCC_Rowley/LCD/lcd.c
Richard Barry e52a6e390e New STM32 demo added.
2009-06-20 18:42:08 +00:00

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/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************
* File Name : lcd.c
* Author : MCD Application Team
* Version : VX.Y.Z
* Date : mm/dd/yyyy
* Description : This file includes the LCD driver for AM-240320L8TNQW00H
* (LCD_ILI9320) Liquid Crystal Display Module of STM3210D-EVAL
* board.
********************************************************************************
* THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
* CONTENT OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*******************************************************************************/
/* Includes ------------------------------------------------------------------*/
#include "FreeRTOS.h"
#include "task.h"
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#include <stdarg.h>
#include <stm32f10x_conf.h>
#include <stm32f10x_lib.h>
#include "STM3210D_lcd.h"
#include "fonts.h"
extern void timerDly(unsigned int);
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define START_BYTE 0x70
#define SET_INDEX 0x00
#define READ_STATUS 0x01
#define LCD_WRITE_REG 0x02
#define LCD_READ_REG 0x03
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Global variables to set the written text color */
static vu16 TextColor = 0x0000, BackColor = 0xFFFF;
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
#define timerDly( x ) vTaskDelay( ( x * 10 ) / portTICK_RATE_MS );
#define vBlockToWait( x )
/*******************************************************************************
* Function Name : LCD_Setup
* Description : Setups the LCD.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void LCD_Setup(void)
{
/* Configure the LCD Control pins --------------------------------------------*/
LCD_CtrlLinesConfig();
/* Configure the SPI3 interface ----------------------------------------------*/
LCD_SPIConfig();
timerDly(5); /* Delay 50 ms */
/* Start Initial Sequence ------------------------------------------------*/
LCD_WriteReg(R229, 0x8000); /* Set the internal vcore voltage */
LCD_WriteReg(R0, 0x0001); /* Start internal OSC. */
LCD_WriteReg(R1, 0x0100); /* set SS and SM bit */
LCD_WriteReg(R2, 0x0700); /* set 1 line inversion */
LCD_WriteReg(R3, 0x1030); /* set GRAM write direction and BGR=1. */
LCD_WriteReg(R4, 0x0000); /* Resize register */
LCD_WriteReg(R8, 0x0202); /* set the back porch and front porch */
LCD_WriteReg(R9, 0x0000); /* set non-display area refresh cycle ISC[3:0] */
LCD_WriteReg(R10, 0x0000); /* FMARK function */
LCD_WriteReg(R12, 0x0000); /* RGB interface setting */
LCD_WriteReg(R13, 0x0000); /* Frame marker Position */
LCD_WriteReg(R15, 0x0000); /* RGB interface polarity */
/* Power On sequence -----------------------------------------------------*/
LCD_WriteReg(R16, 0x0000); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
LCD_WriteReg(R17, 0x0000); /* DC1[2:0], DC0[2:0], VC[2:0] */
LCD_WriteReg(R18, 0x0000); /* VREG1OUT voltage */
LCD_WriteReg(R19, 0x0000); /* VDV[4:0] for VCOM amplitude */
timerDly(20); /* Dis-charge capacitor power voltage (200ms) */
LCD_WriteReg(R16, 0x17B0); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
LCD_WriteReg(R17, 0x0137); /* DC1[2:0], DC0[2:0], VC[2:0] */
timerDly(5); /* Delay 50 ms */
LCD_WriteReg(R18, 0x0139); /* VREG1OUT voltage */
timerDly(5); /* Delay 50 ms */
LCD_WriteReg(R19, 0x1d00); /* VDV[4:0] for VCOM amplitude */
LCD_WriteReg(R41, 0x0013); /* VCM[4:0] for VCOMH */
timerDly(5); /* Delay 50 ms */
LCD_WriteReg(R32, 0x0000); /* GRAM horizontal Address */
LCD_WriteReg(R33, 0x0000); /* GRAM Vertical Address */
/* Adjust the Gamma Curve ------------------------------------------------*/
LCD_WriteReg(R48, 0x0006);
LCD_WriteReg(R49, 0x0101);
LCD_WriteReg(R50, 0x0003);
LCD_WriteReg(R53, 0x0106);
LCD_WriteReg(R54, 0x0b02);
LCD_WriteReg(R55, 0x0302);
LCD_WriteReg(R56, 0x0707);
LCD_WriteReg(R57, 0x0007);
LCD_WriteReg(R60, 0x0600);
LCD_WriteReg(R61, 0x020b);
/* Set GRAM area ---------------------------------------------------------*/
LCD_WriteReg(R80, 0x0000); /* Horizontal GRAM Start Address */
LCD_WriteReg(R81, 0x00EF); /* Horizontal GRAM End Address */
LCD_WriteReg(R82, 0x0000); /* Vertical GRAM Start Address */
LCD_WriteReg(R83, 0x013F); /* Vertical GRAM End Address */
LCD_WriteReg(R96, 0x2700); /* Gate Scan Line */
LCD_WriteReg(R97, 0x0001); /* NDL,VLE, REV */
LCD_WriteReg(R106, 0x0000); /* set scrolling line */
/* Partial Display Control -----------------------------------------------*/
LCD_WriteReg(R128, 0x0000);
LCD_WriteReg(R129, 0x0000);
LCD_WriteReg(R130, 0x0000);
LCD_WriteReg(R131, 0x0000);
LCD_WriteReg(R132, 0x0000);
LCD_WriteReg(R133, 0x0000);
/* Panel Control ---------------------------------------------------------*/
LCD_WriteReg(R144, 0x0010);
LCD_WriteReg(R146, 0x0000);
LCD_WriteReg(R147, 0x0003);
LCD_WriteReg(R149, 0x0110);
LCD_WriteReg(R151, 0x0000);
LCD_WriteReg(R152, 0x0000);
/* Set GRAM write direction and BGR = 1 */
/* I/D=01 (Horizontal : increment, Vertical : decrement) */
/* AM=1 (address is updated in vertical writing direction) */
LCD_WriteReg(R3, 0x1018);
LCD_WriteReg(R7, 0x0173); /* 262K color and display ON */
}
/*******************************************************************************
* Function Name : STM3210D_LCD_Init
* Description : Initializes the LCD.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void STM3210D_LCD_Init(void)
{
/* Setups the LCD */
LCD_Setup();
}
/*******************************************************************************
* 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, ( unsigned char * ) " ");
}
/*******************************************************************************
* 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)
{
vu32 index = 0;
LCD_SetCursor(0x00, 0x013F);
LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */
for(index = 0; index < 76800; index++)
{
LCD_WriteRAM(Color);
}
LCD_CtrlLinesWrite(GPIOB, CtrlPin_NCS, Bit_SET);
}
/*******************************************************************************
* 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)
{
vu32 index = 0, i = 0;
vu8 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);
}
}
LCD_CtrlLinesWrite(GPIOB, CtrlPin_NCS, Bit_SET);
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)
{
vu32 i = 0;
vu16 refcolumn = 319;
/* Send the string character by character on lCD */
while ((*ptr != 0) & (i < 20))
{
/* Display one character on LCD */
LCD_DisplayChar(Line, refcolumn, *ptr);
/* Decrement the column position by 16 */
refcolumn -= 16;
/* Point on the next character */
ptr++;
/* Increment the character counter */
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)
{
/* Horizontal GRAM Start Address */
if(Xpos >= Height)
{
LCD_WriteReg(R80, (Xpos - Height + 1));
}
else
{
LCD_WriteReg(R80, 0);
}
/* Horizontal GRAM End Address */
LCD_WriteReg(R81, Xpos);
/* Vertical GRAM Start Address */
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);
}
LCD_CtrlLinesWrite(GPIOB, CtrlPin_NCS, Bit_SET);
}
else
{
for(i = 0; i < Length; i++)
{
LCD_WriteRAMWord(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;/* Decision Variable */
u32 CurX;/* Current X Value */
u32 CurY;/* Current Y Value */
D = 3 - (Radius << 1);
CurX = 0;
CurY = Radius;
while (CurX <= CurY)
{
LCD_SetCursor(Xpos + CurX, Ypos + CurY);
LCD_WriteRAMWord(TextColor);
LCD_SetCursor(Xpos + CurX, Ypos - CurY);
LCD_WriteRAMWord(TextColor);
LCD_SetCursor(Xpos - CurX, Ypos + CurY);
LCD_WriteRAMWord(TextColor);
LCD_SetCursor(Xpos - CurX, Ypos - CurY);
LCD_WriteRAMWord(TextColor);
LCD_SetCursor(Xpos + CurY, Ypos + CurX);
LCD_WriteRAMWord(TextColor);
LCD_SetCursor(Xpos + CurY, Ypos - CurX);
LCD_WriteRAMWord(TextColor);
LCD_SetCursor(Xpos - CurY, Ypos + CurX);
LCD_WriteRAMWord(TextColor);
LCD_SetCursor(Xpos - CurY, Ypos - CurX);
LCD_WriteRAMWord(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);
}
}
}
LCD_CtrlLinesWrite(GPIOB, CtrlPin_NCS, Bit_SET);
}
///*******************************************************************************
//* Function Name : LCD_DrawBMP
//* Description : Displays a bitmap picture loaded in the SPI Flash.
//* Input : - BmpAddress: Bmp picture address in the SPI Flash.
//* Output : None
//* Return : None
//*******************************************************************************/
//void LCD_DrawBMP(u32 BmpAddress)
//{
// u32 i = 0, size = 0;
//
// /* Read bitmap size */
// SPI_FLASH_BufferRead((u8*)&size, BmpAddress + 2, 4);
//
// /* get bitmap data address offset */
// SPI_FLASH_BufferRead((u8*)&i, BmpAddress + 10, 4);
//
// size = (size - i)/2;
//
// SPI_FLASH_StartReadSequence(BmpAddress + i);
//
// /* Disable SPI1 */
// SPI_Cmd(SPI1, DISABLE);
// /* SPI in 16-bit mode */
// SPI_DataSizeConfig(SPI1, SPI_DataSize_16b);
//
// /* Enable SPI1 */
// SPI_Cmd(SPI1, ENABLE);
//
// /* Set GRAM write direction and BGR = 1 */
// /* I/D=00 (Horizontal : decrement, Vertical : decrement) */
// /* AM=1 (address is updated in vertical writing direction) */
// LCD_WriteReg(R3, 0x1008);
//
// LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */
//
// /* Read bitmap data from SPI Flash and send them to LCD */
// for(i = 0; i < size; i++)
// {
// LCD_WriteRAM(__REV_HalfWord(SPI_FLASH_SendHalfWord(0xA5A5)));
// }
//
// LCD_CtrlLinesWrite(GPIOB, CtrlPin_NCS, Bit_SET);
//
// /* Deselect the FLASH: Chip Select high */
// SPI_FLASH_CS_HIGH();
//
// /* Disable SPI1 */
// SPI_Cmd(SPI1, DISABLE);
// /* SPI in 8-bit mode */
// SPI_DataSizeConfig(SPI1, SPI_DataSize_8b);
//
// /* Enable SPI1 */
// SPI_Cmd(SPI1, ENABLE);
//
// /* Set GRAM write direction and BGR = 1 */
// /* I/D = 01 (Horizontal : increment, Vertical : decrement) */
// /* AM = 1 (address is updated in vertical writing direction) */
// LCD_WriteReg(R3, 0x1018);
//}
/*******************************************************************************
* Function Name : LCD_DrawBMP
* Description : Displays a bitmap picture loaded in the SPI Flash.
* Input : - BmpAddress: Bmp picture address in the SPI Flash.
* Output : None
* Return : None
*******************************************************************************/
void LCD_DrawBMP(uc16 *BmpAddress)
{
u32 i = 0, size = 0;
/* Read bitmap size */
size = BmpAddress[1] | (BmpAddress[2] << 16);
/* get bitmap data address offset */
i = BmpAddress[5] | (BmpAddress[6] << 16);
size = (size - i)/2;
BmpAddress += i/2;
/* Set GRAM write direction and BGR = 1 */
/* I/D=00 (Horizontal : decrement, Vertical : decrement) */
/* AM=1 (address is updated in vertical writing direction) */
LCD_WriteReg(R3, 0x1008);
LCD_WriteRAM_Prepare(); /* Prepare to write GRAM */
/* Read bitmap data from SPI Flash and send them to LCD */
for(i = 0; i < size; i++)
{
LCD_WriteRAM(BmpAddress[i]);
}
LCD_CtrlLinesWrite(GPIOB, CtrlPin_NCS, Bit_SET);
/* Set GRAM write direction and BGR = 1 */
/* I/D = 01 (Horizontal : increment, Vertical : decrement) */
/* AM = 1 (address is updated in vertical writing direction) */
LCD_WriteReg(R3, 0x1018);
}
/*******************************************************************************
* Function Name : LCD_nCS_StartByte
* Description : Reset LCD control line(/CS) and Send Start-Byte
* Input : - Start_Byte: the Start-Byte to be sent
* Output : None
* Return : None
*******************************************************************************/
void LCD_nCS_StartByte(u8 Start_Byte)
{
LCD_CtrlLinesWrite(GPIOB, CtrlPin_NCS, Bit_RESET);
SPI_I2S_SendData(SPI3, Start_Byte);
while(SPI_I2S_GetFlagStatus(SPI3, SPI_I2S_FLAG_BSY) != RESET)
{
vBlockToWait( 1 );
}
}
/*******************************************************************************
* Function Name : LCD_WriteRegIndex
* Description : Writes index to select the LCD register.
* Input : - LCD_Reg: address of the selected register.
* Output : None
* Return : None
*******************************************************************************/
void LCD_WriteRegIndex(u8 LCD_Reg)
{
/* Reset LCD control line(/CS) and Send Start-Byte */
LCD_nCS_StartByte(START_BYTE | SET_INDEX);
/* Write 16-bit Reg Index (High Byte is 0) */
SPI_I2S_SendData(SPI3, 0x00);
while(SPI_I2S_GetFlagStatus(SPI3, SPI_I2S_FLAG_BSY) != RESET)
{
vBlockToWait( 1 );
}
SPI_I2S_SendData(SPI3, LCD_Reg);
while(SPI_I2S_GetFlagStatus(SPI3, SPI_I2S_FLAG_BSY) != RESET)
{
vBlockToWait( 1 );
}
LCD_CtrlLinesWrite(GPIOB, CtrlPin_NCS, Bit_SET);
}
/*******************************************************************************
* Function Name : LCD_ReadReg
* Description : Reads the selected LCD Register.
* Input : None
* Output : None
* Return : LCD Register Value.
*******************************************************************************/
u16 LCD_ReadReg(u8 LCD_Reg)
{
vu16 tmp = 0;
vu8 i = 0;
/* SPI3 prescaler: 4 */
SPI3->CR1 &= 0xFFC7;
SPI3->CR1 |= 0x0008;
/* Write 16-bit Index (then Read Reg) */
LCD_WriteRegIndex(LCD_Reg);
/* Read 16-bit Reg */
/* Reset LCD control line(/CS) and Send Start-Byte */
LCD_nCS_StartByte(START_BYTE | LCD_READ_REG);
for(i = 0; i < 5; i++)
{
SPI_I2S_SendData(SPI3, 0xFF);
while(SPI_I2S_GetFlagStatus(SPI3, SPI_I2S_FLAG_BSY) != RESET)
{
vBlockToWait( 1 );
}
/* One byte of invalid dummy data read after the start byte */
while(SPI_I2S_GetFlagStatus(SPI3, SPI_I2S_FLAG_RXNE) == RESET)
{
vBlockToWait( 1 );
}
SPI_I2S_ReceiveData(SPI3);
}
SPI_I2S_SendData(SPI3, 0xFF);
/* Read upper byte */
while(SPI_I2S_GetFlagStatus(SPI3, SPI_I2S_FLAG_BSY) != RESET)
{
vBlockToWait( 1 );
}
/* Read lower byte */
while(SPI_I2S_GetFlagStatus(SPI3, SPI_I2S_FLAG_RXNE) == RESET)
{
vBlockToWait( 1 );
}
tmp = SPI_I2S_ReceiveData(SPI3);
SPI_I2S_SendData(SPI3, 0xFF);
while(SPI_I2S_GetFlagStatus(SPI3, SPI_I2S_FLAG_BSY) != RESET)
{
vBlockToWait( 1 );
}
/* Read lower byte */
while(SPI_I2S_GetFlagStatus(SPI3, SPI_I2S_FLAG_RXNE) == RESET)
{
vBlockToWait( 1 );
}
tmp = ((tmp & 0xFF) << 8) | SPI_I2S_ReceiveData(SPI3);
LCD_CtrlLinesWrite(GPIOB, CtrlPin_NCS, Bit_SET);
/* SPI3 prescaler: 2 */
SPI3->CR1 &= 0xFFC7;
return tmp;
}
/*******************************************************************************
* Function Name : LCD_WriteRAM_Prepare
* Description : Prepare to write to the LCD RAM.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void LCD_WriteRAM_Prepare(void)
{
LCD_WriteRegIndex(R34); /* Select GRAM Reg */
/* Reset LCD control line(/CS) and Send Start-Byte */
LCD_nCS_StartByte(START_BYTE | LCD_WRITE_REG);
}
/*******************************************************************************
* Function Name : LCD_WriteRAMWord
* Description : Writes 1 word to the LCD RAM.
* Input : - RGB_Code: the pixel color in RGB mode (5-6-5).
* Output : None
* Return : None
*******************************************************************************/
void LCD_WriteRAMWord(u16 RGB_Code)
{
LCD_WriteRAM_Prepare();
LCD_WriteRAM(RGB_Code);
LCD_CtrlLinesWrite(GPIOB, CtrlPin_NCS, Bit_SET);
}
/*******************************************************************************
* 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)
{
/* Write 16-bit Index (then Write Reg) */
LCD_WriteRegIndex(LCD_Reg);
/* Write 16-bit Reg */
/* Reset LCD control line(/CS) and Send Start-Byte */
LCD_nCS_StartByte(START_BYTE | LCD_WRITE_REG);
SPI_I2S_SendData(SPI3, LCD_RegValue>>8);
while(SPI_I2S_GetFlagStatus(SPI3, SPI_I2S_FLAG_BSY) != RESET)
{
vBlockToWait( 1 );
}
SPI_I2S_SendData(SPI3, (LCD_RegValue & 0xFF));
while(SPI_I2S_GetFlagStatus(SPI3, SPI_I2S_FLAG_BSY) != RESET)
{
vBlockToWait( 1 );
}
LCD_CtrlLinesWrite(GPIOB, CtrlPin_NCS, Bit_SET);
}
/*******************************************************************************
* 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)
{
SPI_I2S_SendData(SPI3, RGB_Code >> 8);
while(SPI_I2S_GetFlagStatus(SPI3, SPI_I2S_FLAG_BSY) != RESET)
{
vBlockToWait( 1 );
}
SPI_I2S_SendData(SPI3, RGB_Code & 0xFF);
while(SPI_I2S_GetFlagStatus(SPI3, SPI_I2S_FLAG_BSY) != RESET)
{
vBlockToWait( 1 );
}
}
/*******************************************************************************
* Function Name : LCD_PowerOn
* Description : Power on the LCD.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void LCD_PowerOn(void)
{
/* Power On sequence ---------------------------------------------------------*/
LCD_WriteReg(R16, 0x0000); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
LCD_WriteReg(R17, 0x0000); /* DC1[2:0], DC0[2:0], VC[2:0] */
LCD_WriteReg(R18, 0x0000); /* VREG1OUT voltage */
LCD_WriteReg(R19, 0x0000); /* VDV[4:0] for VCOM amplitude */
timerDly(20); /* Dis-charge capacitor power voltage (200ms) */
LCD_WriteReg(R16, 0x17B0); /* SAP, BT[3:0], AP, DSTB, SLP, STB */
LCD_WriteReg(R17, 0x0137); /* DC1[2:0], DC0[2:0], VC[2:0] */
timerDly(5); /* delay 50 ms */
LCD_WriteReg(R18, 0x0139); /* VREG1OUT voltage */
timerDly(5); /* delay 50 ms */
LCD_WriteReg(R19, 0x1d00); /* VDV[4:0] for VCOM amplitude */
LCD_WriteReg(R41, 0x0013); /* VCM[4:0] for VCOMH */
timerDly(5); /* delay 50 ms */
LCD_WriteReg(R7, 0x0173); /* 262K color and display ON */
}
/*******************************************************************************
* Function Name : LCD_DisplayOn
* Description : Enables the Display.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void LCD_DisplayOn(void)
{
/* Display On */
LCD_WriteReg(R7, 0x0173); /* 262K color and display ON */
}
/*******************************************************************************
* Function Name : LCD_DisplayOff
* Description : Disables the Display.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void LCD_DisplayOff(void)
{
/* Display Off */
LCD_WriteReg(R7, 0x0);
}
/*******************************************************************************
* Function Name : LCD_CtrlLinesConfig
* Description : Configures LCD control lines in Output Push-Pull mode.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void LCD_CtrlLinesConfig(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Configure NCS (PB.02) in Output Push-Pull mode */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
/* Configure NWR(RNW), RS (PD.15, PD.07) in Output Push-Pull mode */
// GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7 | GPIO_Pin_15;
// GPIO_Init(GPIOD, &GPIO_InitStructure);
// LCD_CtrlLinesWrite(GPIOD, CtrlPin_NWR, Bit_SET);
// LCD_CtrlLinesWrite(GPIOD, CtrlPin_RS, Bit_SET);
}
/*******************************************************************************
* Function Name : LCD_CtrlLinesWrite
* Description : Sets or reset LCD control lines.
* Input : - GPIOx: where x can be B or D to select the GPIO peripheral.
* - CtrlPins: the Control line. This parameter can be:
* - CtrlPin_NCS: Chip Select pin (PB.02)
* - CtrlPin_NWR: Read/Write Selection pin (PD.15)
* - CtrlPin_RS: Register/RAM Selection pin (PD.07)
* - BitVal: specifies the value to be written to the selected bit.
* This parameter can be:
* - Bit_RESET: to clear the port pin
* - Bit_SET: to set the port pin
* Output : None
* Return : None
*******************************************************************************/
void LCD_CtrlLinesWrite(GPIO_TypeDef* GPIOx, u16 CtrlPins, BitAction BitVal)
{
/* Set or Reset the control line */
GPIO_WriteBit(GPIOx, CtrlPins, BitVal);
}
/*******************************************************************************
* Function Name : LCD_SPIConfig
* Description : Configures the SPI3 interface.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void LCD_SPIConfig(void)
{
SPI_InitTypeDef SPI_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
/* Enable GPIOC clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC | RCC_APB2Periph_AFIO, ENABLE);
//GPIO_PinRemapConfig(GPIO_Remap_SPI3, ENABLE);
AFIO->MAPR |= GPIO_Remap_SPI3;
/* Enable SPI3 clock */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI3, ENABLE);
/* Configure SPI3 pins: SCK, MISO and MOSI */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10 | GPIO_Pin_11 | GPIO_Pin_12;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOC, &GPIO_InitStructure);
SPI_I2S_DeInit(SPI3);
/* SPI3 Config */
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_2;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_Init(SPI3, &SPI_InitStructure);
/* SPI3 enable */
SPI_Cmd(SPI3, ENABLE);
}
/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/
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