【MM32F5270开发板试用】+ TFTLCD IO口方式驱动

本篇文章来自极术社区与灵动组织的MM32F5270开发板评测活动，更多开发板试用活动请关注极术社区网站。作者：小会

测试下使用开发板IO口方式驱动16位总线TFTLCD。

一、电路图

开发板上LCD接口部分电路图

转接板
硬件接口设计中间转接板，将开发板的接口定义转换成显示屏模块的接口。!

二、代码

st7789.c

#include "board_init.h"#include "hal_gpio.h"#include "hal_rcc.h"#include "st7789s.h"#include "delay.h"#include "font.h"uint16_t POINT_COLOR=0x0000;    //»­±ÊÑÕÉ«uint16_t BACK_COLOR=0xFFFF;  //±³¾°É« _lcd_dev lcddev;static void ST7789_Reset(void){    LCD_SetRst(); delay_ms(1);     LCD_ClrRst();      delay_ms(10); // Delayms 10ms // This delay time is necessary     LCD_SetRst(); delay_ms(120); // Delayms 120 ms  }void ST7789_Gpio_Writedat(uint16_t dat){    uint16_t temp_rpd, rpd;    uint16_t temp_rpe, rpe;    temp_rpd=GPIO_ReadOutData(GPIOD);    rpd=((dat>>5)&0x700) | ((dat<>2)&0x03);    temp_rpd= (temp_rpd&(~0xc703))|rpd;    GPIO_WriteBits(GPIOD,temp_rpd); //printf("rpd=%04x\r\n",rpd);    temp_rpe=temp_rpd=GPIO_ReadOutData(GPIOE);    rpe=(dat<>8);    ST7789_WriteData(xStart);    ST7789_WriteData(xEnd>>8);    ST7789_WriteData(xEnd);    ST7789_WriteCommand(0x2b);ST7789_WriteData(yStart>>8);    ST7789_WriteData(yStart);    ST7789_WriteData(yEnd>>8);    ST7789_WriteData(yEnd);    ST7789_WriteCommand(0x2c);     }void Lcd_SetBox1(uint16_t xStart, uint16_t xEnd, uint16_t yStart, uint16_t yEnd){    ST7789_WriteCommand(0x2a);ST7789_WriteData(xStart>>8);    ST7789_WriteData(xStart);    ST7789_WriteData(xEnd>>8);    ST7789_WriteData(xEnd);    ST7789_WriteCommand(0x2b);ST7789_WriteData(yStart>>8);    ST7789_WriteData(yStart);    ST7789_WriteData(yEnd>>8);    ST7789_WriteData(yEnd);    ST7789_WriteCommand(0x2c);     }void LCD_WriteOneDot(uint16_t color){     ST7789_WriteData(color);}void LCD_Clear(uint16_t Color){   uint32_t i;     Lcd_SetBox(0,0,320,240);     for(i=0;i"~"//size:×ÖÌå´óС 12/16/24//mode:µþ¼Ó·½Ê½(1)»¹ÊǷǵþ¼Ó·½Ê½(0)void LCD_ShowChar(uint16_t x, uint16_t y, uint8_t num, uint8_t size, uint8_t mode){ uint8_t temp,t1,t;    uint8_t y0=y;    uint8_t csize=(size/8+((size%8)?1:0))*(size/2); //µÃµ½×ÖÌåÒ»¸ö×Ö·û¶ÔÓ¦µãÕó¼¯ËùÕ¼µÄ×Ö½ÚÊý  num=num-' ';//µÃµ½Æ«ÒƺóµÄÖµ£¨ASCII×Ö¿âÊÇ´Ó¿Õ¸ñ¿ªÊ¼È¡Ä££¬ËùÒÔ-' '¾ÍÊǶÔÓ¦×Ö·ûµÄ×ֿ⣩    for(t=0;t<csize;t++)    {    if(size==12)temp=asc2_1206[num][t];   //µ÷ÓÃ1206×ÖÌå else if(size==16)temp=asc2_1608[num][t];    //µ÷ÓÃ1608×ÖÌå else if(size==24)temp=asc2_2412[num][t];    //µ÷ÓÃ2412×ÖÌå else return;    //ûÓеÄ×Ö¿â for(t1=0;t1<8;t1++) {if(temp&0x80)ST7789_SetPoint(x,y,POINT_COLOR);     else if(mode==0)ST7789_SetPoint(x,y,BACK_COLOR);     temp<=lcddev.height)return; //³¬ÇøÓòÁË     if((y-y0)==size)     {  y=y0;  x++;  if(x>=lcddev.width)return;    //³¬ÇøÓòÁË  break;     } }    }} //ÏÔʾ×Ö·û´®//x,y:Æðµã×ø±ê//width,height:ÇøÓò´óС  //size:×ÖÌå´óС//*p:×Ö·û´®ÆðʼµØÖ·   void LCD_ShowString(uint16_t x, uint16_t y, uint16_t width, uint16_t height, uint8_t size, uint8_t *p){      uint8_t x0=x;    width+=x;    height+=y;    while((*p=' '))//ÅжÏÊDz»ÊÇ·Ç·¨×Ö·û!    { if(x>=width){x=x0;y+=size;} if(y>=height)break;//Í˳ö LCD_ShowChar(x,y,*p,size,0); x+=size/2; p++;    }  }

st7789.h

#ifndef __ST7789S_H__#define __ST7789S_H__#include "board_init.h"typedef struct  {      uint16_t width;  uint16_t height;  uint16_t id;      uint8_t  dir;  uint16_t    wramcmd;     uint16_t  setxcmd;     uint16_t  setycmd; }_lcd_dev; extern _lcd_dev lcddev;extern uint16_t  POINT_COLOR;  extern uint16_t  BACK_COLOR; #define    BLACK    0x0000#define    BLUE    0x001F#define    RED     0xF800#define    GREEN     0x07E0#define CYAN    0x07FF#define MAGENTA 0xF81F#define YELLOW    0xFFE0#define WHITE    0xFFFF    #define BACKCOLOR 0xFFFF    #define    WORDCOLOR 0x0000/* Ƭѡ */#define LCD_SetCs()     {GPIO_WriteBit(GPIOG, GPIO_PIN_12, 1u);}#define LCD_ClrCs()     {GPIO_WriteBit(GPIOG, GPIO_PIN_12, 0u);}/* ¸´Î» */#define LCD_SetRst()     {GPIO_WriteBit(GPIOG, GPIO_PIN_11, 1);}#define LCD_ClrRst()     {GPIO_WriteBit(GPIOG, GPIO_PIN_11, 0);}/* /RD */#define LCD_SetRd()     {GPIO_WriteBit(GPIOD, GPIO_PIN_4, 1);}#define LCD_ClrRd() {GPIO_WriteBit(GPIOD, GPIO_PIN_4, 0);}/* /WR */#define LCD_SetWr()     {GPIO_WriteBit(GPIOD, GPIO_PIN_5, 1);}#define LCD_ClrWr()     {GPIO_WriteBit(GPIOD, GPIO_PIN_5, 0);}/* BLA */#define LCD_BLA_ON()  {GPIO_WriteBit(GPIOE, GPIO_PIN_3, 1);}#define LCD_BLA_OFF()     {GPIO_WriteBit(GPIOE, GPIO_PIN_3, 0);}/* RS */#define LCD_SetRs()     {GPIO_WriteBit(GPIOE, GPIO_PIN_2, 1);}#define LCD_ClrRs()     {GPIO_WriteBit(GPIOE, GPIO_PIN_2, 0);}void init_st7789s(void);void LCD_Clear(uint16_t Color);void LCD_ShowString(uint16_t x, uint16_t y, uint16_t width, uint16_t height, uint8_t size, uint8_t *p);#endif

main.c

/* * Copyright 2021 MindMotion Microelectronics Co., Ltd. * All rights reserved. * * SPDX-License-Identifier: BSD-3-Clause */#include "board_init.h"#include "hal_flexcan.h"#include "hal_gpio.h"#include "led.h"#include "key.h"#include "delay.h"#include "flexcan.h"#include "st7789s.h"int main(void){ BOARD_Init(); delay_init(); init_led(); //init_key(); //init_flexcan1(); init_st7789s(); POINT_COLOR=RED; LCD_Clear(WHITE); printf("\r\nmm32f5270 test.\r\n");     LCD_ShowString(30,40,210,24,24,"MM32F5270");  LCD_ShowString(30,70,200,16,16,"TFTLCD TEST"); LCD_ShowString(30,90,200,16,16,"ST7789"); LCD_ShowString(30,110,200,16,16,"2022/09/01");   LCD_ShowString(30,150,210,24,24,"https://aijishu.com");      while(1) {    GPIO_WriteBit(BOARD_LED0_GPIO_PORT, BOARD_LED0_GPIO_PIN, 1u);  delay_ms(100);  GPIO_WriteBit(BOARD_LED0_GPIO_PORT, BOARD_LED0_GPIO_PIN, 0u);  delay_ms(100); }}

三、程序运行