App.rar_stm32 tft_stm32 tft_stm32 tft lcd

/*---------------------------------------------------------------------------- * Name: GLCD.c * Purpose: MCBSTM32C low level Graphic LCD (320x240 pixels) functions * Version: V1.00 * Note(s): *---------------------------------------------------------------------------- * This file is part of the uVision/ARM development tools. * This software may only be used under the terms of a valid, current, * end user licence from KEIL for a compatible version of KEIL software * development tools. Nothing else gives you the right to use this software. * * This software is supplied "AS IS" without warranties of any kind. * * Copyright (c) 2009 Keil - An ARM Company. All rights reserved. *---------------------------------------------------------------------------- * History: * V1.00 Initial Version *----------------------------------------------------------------------------*/ #pragma diag_suppress=550 #include "stm32f10x.h" #include "GLCD.h" #include "font.h" /* SPI_SR - bit definitions. */ #define RXNE 0x01 #define TXE 0x02 #define BSY 0x80 /*********************** Hardware specific configuration **********************/ /*------------------------- Speed dependant settings -------------------------*/ /* If processor works on high frequency delay has to be increased, it can be increased by factor 2^N by this constant */ #define DELAY_2N 18 /*---------------------- Graphic LCD size definitions ------------------------*/ #define WIDTH 320 /* Screen Width (in pixels) */ #define HEIGHT 240 /* Screen Hight (in pixels) */ #define BPP 16 /* Bits per pixel */ #define BYPP ((BPP+7)/8) /* Bytes per pixel */ /*--------------- Graphic LCD interface hardware definitions -----------------*/ #define SPI_START (0x70) /* Start byte for SPI transfer */ #define SPI_RD (0x01) /* WR bit 1 within start */ #define SPI_WR (0x00) /* WR bit 0 within start */ #define SPI_DATA (0x02) /* RS bit 1 within start byte */ #define SPI_INDEX (0x00) /* RS bit 0 within start byte */ /*---------------------------- Global variables ------------------------------*/ /******************************************************************************/ static volatile unsigned short TextColor = Black, BackColor = White; /************************ Local auxiliary functions ***************************/ /******************************************************************************* * Delay in while loop cycles * * Parameter: cnt: number of while cycles to delay * * Return: * *******************************************************************************/ static void delay (int cnt) { cnt <<= DELAY_2N; while (cnt--); } /******************************************************************************* * Write data to LCD controller * * Parameter: c: data to be written * * Return: * *******************************************************************************/ __inline void wr_dat (unsigned short c) { Set_Rs; Set_nRd; GPIOE->ODR = c; Clr_nWr; Set_nWr; } /******************************************************************************* * Write command to LCD controller * * Parameter: c: command to be written * * Return: * *******************************************************************************/ __inline void wr_cmd (unsigned char c) { Clr_Rs; Set_nRd; GPIOE->ODR = c; Clr_nWr; Set_nWr; } /******************************************************************************* * Read data from LCD controller * * Parameter: * * Return: read data * *******************************************************************************/ __inline unsigned short rd_dat (void) { unsigned short val = 0; Set_Rs; Set_nWr; Clr_nRd; GPIOE->CRH = 0x44444444; GPIOE->CRL = 0x44444444; val = GPIOE->IDR; val = GPIOE->IDR; GPIOE->CRH = 0x33333333; //配置GPIOE->ODR 8~15位位推挽输出，且最大速度为50M GPIOE->CRL = 0x33333333; //配置GPIOE->ODR 0~7位位推挽输出，且最大速度为50M Set_nRd; return val; } /******************************************************************************* * Write to LCD register * * Parameter: reg: register to be write * * val: value to write to register * *******************************************************************************/ __inline void wr_reg (unsigned char reg, unsigned short val) { Clr_Cs; wr_cmd(reg); wr_dat(val); Set_Cs; } /******************************************************************************* * Read from LCD register * * Parameter: reg: register to be read * * Return: value read from register * *******************************************************************************/ unsigned short rd_reg (unsigned short reg) { Clr_Cs; wr_cmd(reg); reg = rd_dat(); Set_Cs; return reg; } /************************ Exported functions **********************************/ /******************************************************************************* * Initialize the Graphic LCD controller * * Parameter: * * Return: * *******************************************************************************/ void GLCD_init (void) { static unsigned short DriverCode; /* Enable clock for GPIOA,B,C,D,E AFIO and SPI3. */ RCC->APB2ENR |= 0x0000007D; /* NCS is PB2, GPIO output set to high. */ GPIOE->CRL = 0x33333333; //设置PE口为50M通用推挽输出模式 GPIOE->CRH = 0x33333333; GPIOC->CRL &= 0xf0ffffff; //PC6设置为50M通用推挽输出模式 GPIOC->CRL |= 0x03000000; GPIOD->CRH &= 0x000fffff; //PD13,14,15设置为50M通用推挽输出模式 GPIOD->CRH |= 0x33300000; GPIOC->BSRR = 0x00000040; //cs = 1; GPIOD->BSRR = 0x0000E000; //rs,wr,rd = 1; delay(5); /* Delay 50 ms */ DriverCode = rd_reg(0x00); //Read from LCD register if(DriverCode == 0x9320) { /* Start Initial Sequence --------------------------------------------------*/ wr_reg(0xE5, 0x8000); /* Set the internal vcore voltage */ wr_reg(0x00, 0x0001); /* Start internal OSC */ wr_reg(0x01, 0x0100); //wr_reg(0x01, 0x0100); /* Set SS and SM bit */ wr_reg(0x02, 0x0700); /* Set 1 line inversion */ //wr_reg(0x03, 0x1030); //wr_reg(0x03, 0x1030); /* Set GRAM write direction and BGR=1 */ wr_reg(0x03, 0x1018); /*竖屏*/ wr_reg(0x04, 0x00