Dimiter K
GPS Tracker with a TFT display, GPLV3
Dependencies: MAX17055 MAX32620FTHR MAX77650 SerialGPS
Diff: LCD_Driver.cpp
- Revision:
- 0:48d0ba737b93
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/LCD_Driver.cpp Sat Aug 18 22:34:58 2018 +0000
@@ -0,0 +1,390 @@
+
+/***********************************************************************************************************************
+* | file : LCD_Driver.c
+* | version : V1.0
+* | date : 2017-10-16
+* | function : On the ST7735S chip driver and clear screen, drawing lines, drawing, writing
+ and other functions to achieve
+***********************************************************************************************************************/
+
+#include "LCD_Driver.h"
+
+#include <stdlib.h> //itoa()
+#include <stdio.h>
+#include "fonts.h"
+
+LCD_DIS sLCD_DIS;
+
+/***********************************************************************************************************************
+ ------------------------------------------------------------------------
+ |\\\ ///|
+ |\\\ Drive layer ///|
+ ------------------------------------------------------------------------
+***********************************************************************************************************************/
+/*******************************************************************************
+function:
+ Hardware reset
+*******************************************************************************/
+SPI spi0(P0_5, P0_6, P0_4); // mosi, miso, sclk
+
+DigitalOut cs0(P0_7);
+DigitalOut rst(P1_5);
+DigitalOut dc(P1_4);
+
+static void LCD_Reset(void)
+{
+ RST_HIGH();
+ wait_ms(100);
+ RST_LOW();
+ wait_ms(100);
+ RST_HIGH();
+ wait_ms(100);
+}
+
+/*******************************************************************************
+function:
+ Write register address and data
+*******************************************************************************/
+static void LCD_WriteReg(uint8_t Reg)
+{
+ DC_LOW();
+ cs0 = 0;
+ spi0.write(Reg);
+ cs0 = 1;
+}
+
+static void LCD_WriteData_8Bit(uint8_t Data)
+{
+ DC_HIGH();
+ cs0 = 0;
+ spi0.write(Data);
+ cs0 = 1;
+}
+
+
+static void LCD_WriteData_NLen16Bit(uint16_t Data,uint32_t DataLen)
+{
+ uint32_t i;
+ DC_HIGH();
+ cs0 = 0;
+ for(i = 0; i < DataLen; i++) {
+ spi0.write( (uint8_t)(Data >> 8) );
+ spi0.write((uint8_t)(Data & 0XFF) );
+ }
+ cs0 = 1;
+}
+
+/*******************************************************************************
+function:
+ Common register initialization
+*******************************************************************************/
+static void LCD_InitReg(void)
+{
+ spi0.frequency(4000000);
+ cs0 = 1;
+
+ //ST7735R Frame Rate
+ LCD_WriteReg(0xB1);
+ LCD_WriteData_8Bit(0x01);
+ LCD_WriteData_8Bit(0x2C);
+ LCD_WriteData_8Bit(0x2D);
+
+ LCD_WriteReg(0xB2);
+ LCD_WriteData_8Bit(0x01);
+ LCD_WriteData_8Bit(0x2C);
+ LCD_WriteData_8Bit(0x2D);
+
+ LCD_WriteReg(0xB3);
+ LCD_WriteData_8Bit(0x01);
+ LCD_WriteData_8Bit(0x2C);
+ LCD_WriteData_8Bit(0x2D);
+ LCD_WriteData_8Bit(0x01);
+ LCD_WriteData_8Bit(0x2C);
+ LCD_WriteData_8Bit(0x2D);
+
+ LCD_WriteReg(0xB4); //Column inversion
+ LCD_WriteData_8Bit(0x07);
+
+ //ST7735R Power Sequence
+ LCD_WriteReg(0xC0);
+ LCD_WriteData_8Bit(0xA2);
+ LCD_WriteData_8Bit(0x02);
+ LCD_WriteData_8Bit(0x84);
+ LCD_WriteReg(0xC1);
+ LCD_WriteData_8Bit(0xC5);
+
+ LCD_WriteReg(0xC2);
+ LCD_WriteData_8Bit(0x0A);
+ LCD_WriteData_8Bit(0x00);
+
+ LCD_WriteReg(0xC3);
+ LCD_WriteData_8Bit(0x8A);
+ LCD_WriteData_8Bit(0x2A);
+ LCD_WriteReg(0xC4);
+ LCD_WriteData_8Bit(0x8A);
+ LCD_WriteData_8Bit(0xEE);
+
+ LCD_WriteReg(0xC5); //VCOM
+ LCD_WriteData_8Bit(0x0E);
+
+ //ST7735R Gamma Sequence
+ LCD_WriteReg(0xe0);
+ LCD_WriteData_8Bit(0x0f);
+ LCD_WriteData_8Bit(0x1a);
+ LCD_WriteData_8Bit(0x0f);
+ LCD_WriteData_8Bit(0x18);
+ LCD_WriteData_8Bit(0x2f);
+ LCD_WriteData_8Bit(0x28);
+ LCD_WriteData_8Bit(0x20);
+ LCD_WriteData_8Bit(0x22);
+ LCD_WriteData_8Bit(0x1f);
+ LCD_WriteData_8Bit(0x1b);
+ LCD_WriteData_8Bit(0x23);
+ LCD_WriteData_8Bit(0x37);
+ LCD_WriteData_8Bit(0x00);
+ LCD_WriteData_8Bit(0x07);
+ LCD_WriteData_8Bit(0x02);
+ LCD_WriteData_8Bit(0x10);
+
+ LCD_WriteReg(0xe1);
+ LCD_WriteData_8Bit(0x0f);
+ LCD_WriteData_8Bit(0x1b);
+ LCD_WriteData_8Bit(0x0f);
+ LCD_WriteData_8Bit(0x17);
+ LCD_WriteData_8Bit(0x33);
+ LCD_WriteData_8Bit(0x2c);
+ LCD_WriteData_8Bit(0x29);
+ LCD_WriteData_8Bit(0x2e);
+ LCD_WriteData_8Bit(0x30);
+ LCD_WriteData_8Bit(0x30);
+ LCD_WriteData_8Bit(0x39);
+ LCD_WriteData_8Bit(0x3f);
+ LCD_WriteData_8Bit(0x00);
+ LCD_WriteData_8Bit(0x07);
+ LCD_WriteData_8Bit(0x03);
+ LCD_WriteData_8Bit(0x10);
+
+ LCD_WriteReg(0xF0); //Enable test command
+ LCD_WriteData_8Bit(0x01);
+
+ LCD_WriteReg(0xF6); //Disable ram power save mode
+ LCD_WriteData_8Bit(0x00);
+
+ LCD_WriteReg(0x3A); //65k mode
+ LCD_WriteData_8Bit(0x05);
+
+}
+
+
+/********************************************************************************
+function: Set the display scan and color transfer modes
+parameter:
+ Scan_dir : Scan direction
+ Colorchose : RGB or GBR color format
+********************************************************************************/
+void LCD_SetGramScanWay(LCD_SCAN_DIR Scan_dir)
+{
+ //Get the screen scan direction
+ sLCD_DIS.LCD_Scan_Dir = Scan_dir;
+
+ //Get GRAM and LCD width and height
+ if(Scan_dir == L2R_U2D || Scan_dir == L2R_D2U || Scan_dir == R2L_U2D || Scan_dir == R2L_D2U) {
+ sLCD_DIS.LCD_Dis_Column = LCD_HEIGHT ;
+ sLCD_DIS.LCD_Dis_Page = LCD_WIDTH ;
+ } else {
+ sLCD_DIS.LCD_Dis_Column = LCD_WIDTH ;
+ sLCD_DIS.LCD_Dis_Page = LCD_HEIGHT ;
+ }
+
+ // Gets the scan direction of GRAM
+ uint16_t MemoryAccessReg_Data=0; //0x36
+ switch (Scan_dir) {
+ case L2R_U2D:
+ MemoryAccessReg_Data = 0X00 | 0x00;//x Scan direction | y Scan direction
+ break;
+ case L2R_D2U:
+ MemoryAccessReg_Data = 0x00 | 0x80;//0xC8 | 0X10
+ break;
+ case R2L_U2D:// 0X4
+ MemoryAccessReg_Data = 0x40 | 0x00;
+ break;
+ case R2L_D2U:// 0XC
+ MemoryAccessReg_Data = 0x40 | 0x80;
+ break;
+ case U2D_L2R://0X2
+ MemoryAccessReg_Data = 0X00 | 0X00 | 0x20;
+ break;
+ case U2D_R2L://0X6
+ MemoryAccessReg_Data = 0x00 | 0X40 | 0x20;
+ break;
+ case D2U_L2R://0XA
+ MemoryAccessReg_Data = 0x80 | 0x00 | 0x20;
+ break;
+ case D2U_R2L://0XE
+ MemoryAccessReg_Data = 0x40 | 0x80 | 0x20;
+ break;
+ }
+
+ //please set (MemoryAccessReg_Data & 0x10) != 1
+ if((MemoryAccessReg_Data && 0x20) != 1) {
+ sLCD_DIS.LCD_X_Adjust = LCD_X;
+ sLCD_DIS.LCD_Y_Adjust = LCD_Y;
+ } else {
+ sLCD_DIS.LCD_X_Adjust = LCD_Y;
+ sLCD_DIS.LCD_Y_Adjust = LCD_X;
+ }
+
+ // Set the read / write scan direction of the frame memory
+ LCD_WriteReg(0x36); //MX, MY, RGB mode
+#if defined(LCD_1IN44)
+ LCD_WriteData_8Bit( MemoryAccessReg_Data | 0x08); //0x08 set RGB
+#elif defined(LCD_1IN8)
+ LCD_WriteData_8Bit( MemoryAccessReg_Data & 0xf7); //RGB color filter panel
+#endif
+
+}
+
+/***********************************************************************************************************************
+ ------------------------------------------------------------------------
+ |\\\ ///|
+ |\\\ App layer ///|
+ ------------------------------------------------------------------------
+***********************************************************************************************************************/
+
+/********************************************************************************
+function:
+ initialization
+********************************************************************************/
+void LCD_Init( LCD_SCAN_DIR Lcd_ScanDir )
+{
+
+ //Hardware reset
+ LCD_Reset();
+
+ //Set the initialization register
+ LCD_InitReg();
+
+ //Set the display scan and color transfer modes
+ LCD_SetGramScanWay( Lcd_ScanDir );
+ wait_ms(200);
+
+ //sleep out
+ LCD_WriteReg(0x11);
+ wait_ms(120);
+
+ //Turn on the LCD display
+ LCD_WriteReg(0x29);
+}
+
+/********************************************************************************
+function: Sets the start position and size of the display area
+parameter:
+ Xstart : X direction Start coordinates
+ Ystart : Y direction Start coordinates
+ Xend : X direction end coordinates
+ Yend : Y direction end coordinates
+********************************************************************************/
+void LCD_SetWindows( POINT Xstart, POINT Ystart, POINT Xend, POINT Yend )
+{
+
+ //set the X coordinates
+ LCD_WriteReg ( 0x2A );
+ LCD_WriteData_8Bit ( 0x00 ); //Set the horizontal starting point to the high octet
+ LCD_WriteData_8Bit ( (Xstart & 0xff) + sLCD_DIS.LCD_X_Adjust); //Set the horizontal starting point to the low octet
+ LCD_WriteData_8Bit ( 0x00 ); //Set the horizontal end to the high octet
+ LCD_WriteData_8Bit ( (( Xend - 1 ) & 0xff) + sLCD_DIS.LCD_X_Adjust); //Set the horizontal end to the low octet
+
+ //set the Y coordinates
+ LCD_WriteReg ( 0x2B );
+ LCD_WriteData_8Bit ( 0x00 );
+ LCD_WriteData_8Bit ( (Ystart & 0xff) + sLCD_DIS.LCD_Y_Adjust);
+ LCD_WriteData_8Bit ( 0x00 );
+ LCD_WriteData_8Bit ( ( (Yend - 1) & 0xff )+ sLCD_DIS.LCD_Y_Adjust);
+
+ LCD_WriteReg(0x2C);
+
+}
+
+/********************************************************************************
+function: Set the display point (Xpoint, Ypoint)
+parameter:
+ xStart : X direction Start coordinates
+ xEnd : X direction end coordinates
+********************************************************************************/
+void LCD_SetCursor ( POINT Xpoint, POINT Ypoint )
+{
+ LCD_SetWindows ( Xpoint, Ypoint, Xpoint , Ypoint );
+}
+
+/********************************************************************************
+function: Set show color
+parameter:
+ Color : Set show color
+********************************************************************************/
+void LCD_SetColor( COLOR Color ,POINT Xpoint, POINT Ypoint)
+{
+ LCD_WriteData_NLen16Bit(Color ,(uint32_t)Xpoint * (uint32_t)Ypoint);
+}
+
+/********************************************************************************
+function: Point (Xpoint, Ypoint) Fill the color
+parameter:
+ Xpoint : The x coordinate of the point
+ Ypoint : The y coordinate of the point
+ Color : Set the color
+********************************************************************************/
+void LCD_SetPointlColor ( POINT Xpoint, POINT Ypoint, COLOR Color )
+{
+ if ( ( Xpoint <= sLCD_DIS.LCD_Dis_Column ) && ( Ypoint <= sLCD_DIS.LCD_Dis_Page ) ) {
+ LCD_SetCursor (Xpoint, Ypoint);
+ LCD_SetColor ( Color , 1 , 1);
+ }
+}
+
+/********************************************************************************
+function: Fill the area with the color
+parameter:
+ Xstart : Start point x coordinate
+ Ystart : Start point y coordinate
+ Xend : End point coordinates
+ Yend : End point coordinates
+ Color : Set the color
+********************************************************************************/
+void LCD_SetArealColor (POINT Xstart, POINT Ystart, POINT Xend, POINT Yend, COLOR Color)
+{
+ if((Xend > Xstart) && (Yend > Ystart)) {
+ LCD_SetWindows( Xstart , Ystart , Xend , Yend );
+ LCD_SetColor ( Color ,Xend - Xstart , Yend - Ystart );
+ }
+}
+
+/********************************************************************************
+function:
+ Clear screen
+********************************************************************************/
+void LCD_Clear(COLOR Color)
+{
+ LCD_SetArealColor(0,0, sLCD_DIS.LCD_Dis_Column , sLCD_DIS.LCD_Dis_Page, Color);
+}
+
+/********************************************************************************************/
+
+void DC_LOW(void)
+{
+ dc = 0;
+}
+void DC_HIGH(void)
+{
+ dc= 1;
+}
+
+void RST_LOW(void)
+{
+ rst = 0;
+}
+void RST_HIGH(void)
+{
+ rst = 1;
+}
+
+