#申请原创# @21小跑堂
【目的】单片机的交互信息，通常是用uart输入串口信息，作为STM32U5A5，他的运行频率为160MHz，而且接口信息丰富，可以用LCD屏来做为输出信息，这样比较直观，再也不用开串口助手来观察了。本文就驱动LCD屏来做为此款开发板试用的第一篇。
【实验的硬件】
2、3.5寸SPI串口TFT液晶显示模块LCD触摸屏ILI9488 /6 /1驱动320X480
【实验的开发环境】
- 操作系统：win11。
- 开发IDE工具：STM32CubeIDE，版本为1.13.2:
【开发步骤】
1、新建NUCLEO-U5A5ZJ开发板工程，这样开发板可以默认的给我们配轩好了串口、LED等常用的外设。
2、打开spi1，配置spi1的IO为MOSI为PA7，SCK为PA5。
3、配置开发板上的PF2、PD14、PD15为TFT_DC、TFT_CS、TFT_RST，如下图：
4、配置三个IO为上拉，输入为High，如下图所示：
5、设置spi为单向发送，传输数据为8bit，分频为4，工作频为40M，同时NSS为软摸拟。
6、配置时钟为160MHz，这样spi的时钟可以达到160M。
7、因为ili9488要开启大的空间进行数据传输，所以把栈堆的空间调大一些。
随后按alt+k生成工程。
【代码】
添加ili9488.h，添加代码如下：
/*
* ili9488.h
*
* Created on: Dec 14, 2021
* Author: timagr615
*/
#ifndef INC_ILI9488_H_
#define INC_ILI9488_H_
#include <math.h>
#include <stdbool.h>
#include "main.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#define RST_A() HAL_GPIO_WritePin(TFT_RST_GPIO_Port,TFT_RST_Pin,GPIO_PIN_RESET)
#define RST_D() HAL_GPIO_WritePin(TFT_RST_GPIO_Port,TFT_RST_Pin,GPIO_PIN_SET)
#define CS_A() HAL_GPIO_WritePin(TFT_CS_GPIO_Port,TFT_CS_Pin,GPIO_PIN_RESET)
#define CS_D() HAL_GPIO_WritePin(TFT_CS_GPIO_Port,TFT_CS_Pin,GPIO_PIN_SET)
#define DC_COMMAND() HAL_GPIO_WritePin(TFT_DC_GPIO_Port,TFT_DC_Pin,GPIO_PIN_RESET)
#define DC_DATA() HAL_GPIO_WritePin(TFT_DC_GPIO_Port,TFT_DC_Pin,GPIO_PIN_SET)
#define ILI9488_TFTWIDTH 320
#define ILI9488_TFTHEIGHT 480
#define ILI9488_PIXEL_COUNT ILI9488_TFTWIDTH * ILI9488_TFTHEIGHT
#define ILI9488_NOP 0x00
#define ILI9488_SWRESET 0x01
#define ILI9488_RDDID 0x04
#define ILI9488_RDDST 0x09
#define ILI9488_SLPIN 0x10
#define ILI9488_SLPOUT 0x11
#define ILI9488_PTLON 0x12
#define ILI9488_NORON 0x13
#define ILI9488_RDMODE 0x0A
#define ILI9488_RDMADCTL 0x0B
#define ILI9488_RDPIXFMT 0x0C
#define ILI9488_RDIMGFMT 0x0D
#define ILI9488_RDSELFDIAG 0x0F
#define ILI9488_INVOFF 0x20
#define ILI9488_INVON 0x21
#define ILI9488_GAMMASET 0x26
#define ILI9488_DISPOFF 0x28
#define ILI9488_DISPON 0x29
#define ILI9488_CASET 0x2A
#define ILI9488_PASET 0x2B
#define ILI9488_RAMWR 0x2C
#define ILI9488_RAMRD 0x2E
#define ILI9488_PTLAR 0x30
#define ILI9488_MADCTL 0x36
#define ILI9488_PIXFMT 0x3A
#define ILI9488_FRMCTR1 0xB1
#define ILI9488_FRMCTR2 0xB2
#define ILI9488_FRMCTR3 0xB3
#define ILI9488_INVCTR 0xB4
#define ILI9488_DFUNCTR 0xB6
#define ILI9488_PWCTR1 0xC0
#define ILI9488_PWCTR2 0xC1
#define ILI9488_PWCTR3 0xC2
#define ILI9488_PWCTR4 0xC3
#define ILI9488_PWCTR5 0xC4
#define ILI9488_VMCTR1 0xC5
#define ILI9488_VMCTR2 0xC7
#define ILI9488_RDID1 0xDA
#define ILI9488_RDID2 0xDB
#define ILI9488_RDID3 0xDC
#define ILI9488_RDID4 0xDD
#define ILI9488_GMCTRP1 0xE0
#define ILI9488_GMCTRN1 0xE1
/*
#define ILI9488_PWCTR6 0xFC
*/
// Color definitions
#define ILI9488_BLACK 0x0000 /* 0, 0, 0 */
#define ILI9488_NAVY 0x000F /* 0, 0, 128 */
#define ILI9488_DARKGREEN 0x03E0 /* 0, 128, 0 */
#define ILI9488_DARKCYAN 0x03EF /* 0, 128, 128 */
#define ILI9488_MAROON 0x7800 /* 128, 0, 0 */
#define ILI9488_PURPLE 0x780F /* 128, 0, 128 */
#define ILI9488_OLIVE 0x7BE0 /* 128, 128, 0 */
#define ILI9488_LIGHTGREY 0xC618 /* 192, 192, 192 */
#define ILI9488_DARKGREY 0x7BEF /* 128, 128, 128 */
#define ILI9488_BLUE 0x001F /* 0, 0, 255 */
#define ILI9488_GREEN 0x07E0 /* 0, 255, 0 */
#define ILI9488_CYAN 0x07FF /* 0, 255, 255 */
#define ILI9488_RED 0xF800 /* 255, 0, 0 */
#define ILI9488_MAGENTA 0xF81F /* 255, 0, 255 */
#define ILI9488_YELLOW 0xFFE0 /* 255, 255, 0 */
#define ILI9488_WHITE 0xFFFF /* 255, 255, 255 */
#define ILI9488_ORANGE 0xFD20 /* 255, 165, 0 */
#define ILI9488_GREENYELLOW 0xAFE5 /* 173, 255, 47 */
#define ILI9488_PINK 0xF81F
#define TFT9341_BLACK 0x0000
#define TFT9341_BLUE 0x001F
#define TFT9341_RED 0xF800
#define TFT9341_GREEN 0x07E0
#define TFT9341_CYAN 0x07FF
#define TFT9341_MAGENTA 0xF81F
#define TFT9341_YELLOW 0xFFE0
#define TFT9341_WHITE 0xFFFF
#define MADCTL_MY 0x80
#define MADCTL_MX 0x40
#define MADCTL_MV 0x20
#define MADCTL_ML 0x10
#define MADCTL_RGB 0x00
#define MADCTL_BGR 0x08
#define MADCTL_MH 0x04
#define swap(a, b) { int16_t t = a; a = b; b = t; }
#define pgm_read_byte(addr) (*(const unsigned char *)(addr))
#define min(a,b) (((a)<(b))?(a):(b))
//***** Functions prototypes *****//
//1. Write Command to LCD
void ILI9341_SendCommand(uint8_t com);
//2. Write data to LCD
void ILI9341_SendData(uint8_t data);
//2.2 Write multiple/DMA
void ILI9488_SendData_Multi(uint8_t *buff, size_t buff_size);
//void ILI9488_Init(SPI_HandleTypeDef *spiLcdHandle, GPIO_TypeDef *csPORT, uint16_t csPIN, GPIO_TypeDef *dcPORT, uint16_t dcPIN, GPIO_TypeDef *resetPORT, uint16_t resetPIN);
void ILI9488_Init();
void setAddrWindow(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1);
void setScrollArea(uint16_t topFixedArea, uint16_t bottomFixedArea);
void scroll(uint16_t pixels);
void pushColor(uint16_t color);
void pushColors(uint16_t *data, uint8_t len, uint8_t first);
void drawImage(const uint8_t* img, uint16_t x, uint16_t y, uint16_t w, uint16_t h);
void fillScreen(uint16_t color);
void drawPixel(int16_t x, int16_t y, uint16_t color);
void drawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t color);
void drawFastHLine(int16_t x, int16_t y, int16_t w, uint16_t color);
void drawLine(int16_t x0, int16_t y0, int16_t x1, int16_t y1,uint16_t color);
void writeLine(int16_t x0, int16_t y0, int16_t x1, int16_t y1,uint16_t color);
void fillRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color);
void setRotation(uint8_t r);
void invertDisplay(uint8_t i);
uint16_t color565(uint8_t r, uint8_t g, uint8_t b);
void drawChar(int16_t x, int16_t y, unsigned char c, uint16_t color, uint16_t bg, uint8_t size);
void ILI9488_printText(char text[], int16_t x, int16_t y, uint16_t color, uint16_t bg, uint8_t size);
void write16BitColor(uint16_t color);
void testLines(uint8_t color);
#endif /* INC_ILI9488_H_ */
/*
* ili9488.c
*
* Created on: Nov 12, 2023
* Author: liujianhua
*/
#include "ili9488.h"
#include "FONT.H"
extern SPI_HandleTypeDef hspi1;
extern UART_HandleTypeDef huart1;
static uint8_t rotationNum=1;
static bool _cp437 = false;
static SPI_HandleTypeDef lcdSPIhandle;
//Chip Select pin
static GPIO_TypeDef *tftCS_GPIO;
static uint16_t tftCS_PIN;
//Data Command pin
static GPIO_TypeDef *tftDC_GPIO;
static uint16_t tftDC_PIN;
//Reset pin
static GPIO_TypeDef *tftRESET_GPIO;
static uint16_t tftRESET_PIN;
//uint8_t frm_buf[65536] = {0};
uint16_t width;
uint16_t height;
static //Text simple font array (You can your own font)
const unsigned char font1[] = {
0x00, 0x00, 0x00, 0x00, 0x00,
0x3E, 0x5B, 0x4F, 0x5B, 0x3E,
0x3E, 0x6B, 0x4F, 0x6B, 0x3E,
0x1C, 0x3E, 0x7C, 0x3E, 0x1C,
0x18, 0x3C, 0x7E, 0x3C, 0x18,
0x1C, 0x57, 0x7D, 0x57, 0x1C,
0x1C, 0x5E, 0x7F, 0x5E, 0x1C,
0x00, 0x18, 0x3C, 0x18, 0x00,
0xFF, 0xE7, 0xC3, 0xE7, 0xFF,
0x00, 0x18, 0x24, 0x18, 0x00,
0xFF, 0xE7, 0xDB, 0xE7, 0xFF,
0x30, 0x48, 0x3A, 0x06, 0x0E,
0x26, 0x29, 0x79, 0x29, 0x26,
0x40, 0x7F, 0x05, 0x05, 0x07,
0x40, 0x7F, 0x05, 0x25, 0x3F,
0x5A, 0x3C, 0xE7, 0x3C, 0x5A,
0x7F, 0x3E, 0x1C, 0x1C, 0x08,
0x08, 0x1C, 0x1C, 0x3E, 0x7F,
0x14, 0x22, 0x7F, 0x22, 0x14,
0x5F, 0x5F, 0x00, 0x5F, 0x5F,
0x06, 0x09, 0x7F, 0x01, 0x7F,
0x00, 0x66, 0x89, 0x95, 0x6A,
0x60, 0x60, 0x60, 0x60, 0x60,
0x94, 0xA2, 0xFF, 0xA2, 0x94,
0x08, 0x04, 0x7E, 0x04, 0x08,
0x10, 0x20, 0x7E, 0x20, 0x10,
0x08, 0x08, 0x2A, 0x1C, 0x08,
0x08, 0x1C, 0x2A, 0x08, 0x08,
0x1E, 0x10, 0x10, 0x10, 0x10,
0x0C, 0x1E, 0x0C, 0x1E, 0x0C,
0x30, 0x38, 0x3E, 0x38, 0x30,
0x06, 0x0E, 0x3E, 0x0E, 0x06,
0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x5F, 0x00, 0x00,
0x00, 0x07, 0x00, 0x07, 0x00,
0x14, 0x7F, 0x14, 0x7F, 0x14,
0x24, 0x2A, 0x7F, 0x2A, 0x12,
0x23, 0x13, 0x08, 0x64, 0x62,
0x36, 0x49, 0x56, 0x20, 0x50,
0x00, 0x08, 0x07, 0x03, 0x00,
0x00, 0x1C, 0x22, 0x41, 0x00,
0x00, 0x41, 0x22, 0x1C, 0x00,
0x2A, 0x1C, 0x7F, 0x1C, 0x2A,
0x08, 0x08, 0x3E, 0x08, 0x08,
0x00, 0x80, 0x70, 0x30, 0x00,
0x08, 0x08, 0x08, 0x08, 0x08,
0x00, 0x00, 0x60, 0x60, 0x00,
0x20, 0x10, 0x08, 0x04, 0x02,
0x3E, 0x51, 0x49, 0x45, 0x3E,
0x00, 0x42, 0x7F, 0x40, 0x00,
0x72, 0x49, 0x49, 0x49, 0x46,
0x21, 0x41, 0x49, 0x4D, 0x33,
0x18, 0x14, 0x12, 0x7F, 0x10,
0x27, 0x45, 0x45, 0x45, 0x39,
0x3C, 0x4A, 0x49, 0x49, 0x31,
0x41, 0x21, 0x11, 0x09, 0x07,
0x36, 0x49, 0x49, 0x49, 0x36,
0x46, 0x49, 0x49, 0x29, 0x1E,
0x00, 0x00, 0x14, 0x00, 0x00,
0x00, 0x40, 0x34, 0x00, 0x00,
0x00, 0x08, 0x14, 0x22, 0x41,
0x14, 0x14, 0x14, 0x14, 0x14,
0x00, 0x41, 0x22, 0x14, 0x08,
0x02, 0x01, 0x59, 0x09, 0x06,
0x3E, 0x41, 0x5D, 0x59, 0x4E,
0x7C, 0x12, 0x11, 0x12, 0x7C,
0x7F, 0x49, 0x49, 0x49, 0x36,
0x3E, 0x41, 0x41, 0x41, 0x22,
0x7F, 0x41, 0x41, 0x41, 0x3E,
0x7F, 0x49, 0x49, 0x49, 0x41,
0x7F, 0x09, 0x09, 0x09, 0x01,
0x3E, 0x41, 0x41, 0x51, 0x73,
0x7F, 0x08, 0x08, 0x08, 0x7F,
0x00, 0x41, 0x7F, 0x41, 0x00,
0x20, 0x40, 0x41, 0x3F, 0x01,
0x7F, 0x08, 0x14, 0x22, 0x41,
0x7F, 0x40, 0x40, 0x40, 0x40,
0x7F, 0x02, 0x1C, 0x02, 0x7F,
0x7F, 0x04, 0x08, 0x10, 0x7F,
0x3E, 0x41, 0x41, 0x41, 0x3E,
0x7F, 0x09, 0x09, 0x09, 0x06,
0x3E, 0x41, 0x51, 0x21, 0x5E,
0x7F, 0x09, 0x19, 0x29, 0x46,
0x26, 0x49, 0x49, 0x49, 0x32,
0x03, 0x01, 0x7F, 0x01, 0x03,
0x3F, 0x40, 0x40, 0x40, 0x3F,
0x1F, 0x20, 0x40, 0x20, 0x1F,
0x3F, 0x40, 0x38, 0x40, 0x3F,
0x63, 0x14, 0x08, 0x14, 0x63,
0x03, 0x04, 0x78, 0x04, 0x03,
0x61, 0x59, 0x49, 0x4D, 0x43,
0x00, 0x7F, 0x41, 0x41, 0x41,
0x02, 0x04, 0x08, 0x10, 0x20,
0x00, 0x41, 0x41, 0x41, 0x7F,
0x04, 0x02, 0x01, 0x02, 0x04,
0x40, 0x40, 0x40, 0x40, 0x40,
0x00, 0x03, 0x07, 0x08, 0x00,
0x20, 0x54, 0x54, 0x78, 0x40,
0x7F, 0x28, 0x44, 0x44, 0x38,
0x38, 0x44, 0x44, 0x44, 0x28,
0x38, 0x44, 0x44, 0x28, 0x7F,
0x38, 0x54, 0x54, 0x54, 0x18,
0x00, 0x08, 0x7E, 0x09, 0x02,
0x18, 0xA4, 0xA4, 0x9C, 0x78,
0x7F, 0x08, 0x04, 0x04, 0x78,
0x00, 0x44, 0x7D, 0x40, 0x00,
0x20, 0x40, 0x40, 0x3D, 0x00,
0x7F, 0x10, 0x28, 0x44, 0x00,
0x00, 0x41, 0x7F, 0x40, 0x00,
0x7C, 0x04, 0x78, 0x04, 0x78,
0x7C, 0x08, 0x04, 0x04, 0x78,
0x38, 0x44, 0x44, 0x44, 0x38,
0xFC, 0x18, 0x24, 0x24, 0x18,
0x18, 0x24, 0x24, 0x18, 0xFC,
0x7C, 0x08, 0x04, 0x04, 0x08,
0x48, 0x54, 0x54, 0x54, 0x24,
0x04, 0x04, 0x3F, 0x44, 0x24,
0x3C, 0x40, 0x40, 0x20, 0x7C,
0x1C, 0x20, 0x40, 0x20, 0x1C,
0x3C, 0x40, 0x30, 0x40, 0x3C,
0x44, 0x28, 0x10, 0x28, 0x44,
0x4C, 0x90, 0x90, 0x90, 0x7C,
0x44, 0x64, 0x54, 0x4C, 0x44,
0x00, 0x08, 0x36, 0x41, 0x00,
0x00, 0x00, 0x77, 0x00, 0x00,
0x00, 0x41, 0x36, 0x08, 0x00,
0x02, 0x01, 0x02, 0x04, 0x02,
0x3C, 0x26, 0x23, 0x26, 0x3C,
0x1E, 0xA1, 0xA1, 0x61, 0x12,
0x3A, 0x40, 0x40, 0x20, 0x7A,
0x38, 0x54, 0x54, 0x55, 0x59,
0x21, 0x55, 0x55, 0x79, 0x41,
0x22, 0x54, 0x54, 0x78, 0x42,
0x21, 0x55, 0x54, 0x78, 0x40,
0x20, 0x54, 0x55, 0x79, 0x40,
0x0C, 0x1E, 0x52, 0x72, 0x12,
0x39, 0x55, 0x55, 0x55, 0x59,
0x39, 0x54, 0x54, 0x54, 0x59,
0x39, 0x55, 0x54, 0x54, 0x58,
0x00, 0x00, 0x45, 0x7C, 0x41,
0x00, 0x02, 0x45, 0x7D, 0x42,
0x00, 0x01, 0x45, 0x7C, 0x40,
0x7D, 0x12, 0x11, 0x12, 0x7D,
0xF0, 0x28, 0x25, 0x28, 0xF0,
0x7C, 0x54, 0x55, 0x45, 0x00,
0x20, 0x54, 0x54, 0x7C, 0x54,
0x7C, 0x0A, 0x09, 0x7F, 0x49,
0x32, 0x49, 0x49, 0x49, 0x32,
0x3A, 0x44, 0x44, 0x44, 0x3A,
0x32, 0x4A, 0x48, 0x48, 0x30,
0x3A, 0x41, 0x41, 0x21, 0x7A,
0x3A, 0x42, 0x40, 0x20, 0x78,
0x00, 0x9D, 0xA0, 0xA0, 0x7D,
0x3D, 0x42, 0x42, 0x42, 0x3D,
0x3D, 0x40, 0x40, 0x40, 0x3D,
0x3C, 0x24, 0xFF, 0x24, 0x24,
0x48, 0x7E, 0x49, 0x43, 0x66,
0x2B, 0x2F, 0xFC, 0x2F, 0x2B,
0xFF, 0x09, 0x29, 0xF6, 0x20,
0xC0, 0x88, 0x7E, 0x09, 0x03,
0x20, 0x54, 0x54, 0x79, 0x41,
0x00, 0x00, 0x44, 0x7D, 0x41,
0x30, 0x48, 0x48, 0x4A, 0x32,
0x38, 0x40, 0x40, 0x22, 0x7A,
0x00, 0x7A, 0x0A, 0x0A, 0x72,
0x7D, 0x0D, 0x19, 0x31, 0x7D,
0x26, 0x29, 0x29, 0x2F, 0x28,
0x26, 0x29, 0x29, 0x29, 0x26,
0x30, 0x48, 0x4D, 0x40, 0x20,
0x38, 0x08, 0x08, 0x08, 0x08,
0x08, 0x08, 0x08, 0x08, 0x38,
0x2F, 0x10, 0xC8, 0xAC, 0xBA,
0x2F, 0x10, 0x28, 0x34, 0xFA,
0x00, 0x00, 0x7B, 0x00, 0x00,
0x08, 0x14, 0x2A, 0x14, 0x22,
0x22, 0x14, 0x2A, 0x14, 0x08,
0x55, 0x00, 0x55, 0x00, 0x55,
0xAA, 0x55, 0xAA, 0x55, 0xAA,
0xFF, 0x55, 0xFF, 0x55, 0xFF,
0x00, 0x00, 0x00, 0xFF, 0x00,
0x10, 0x10, 0x10, 0xFF, 0x00,
0x14, 0x14, 0x14, 0xFF, 0x00,
0x10, 0x10, 0xFF, 0x00, 0xFF,
0x10, 0x10, 0xF0, 0x10, 0xF0,
0x14, 0x14, 0x14, 0xFC, 0x00,
0x14, 0x14, 0xF7, 0x00, 0xFF,
0x00, 0x00, 0xFF, 0x00, 0xFF,
0x14, 0x14, 0xF4, 0x04, 0xFC,
0x14, 0x14, 0x17, 0x10, 0x1F,
0x10, 0x10, 0x1F, 0x10, 0x1F,
0x14, 0x14, 0x14, 0x1F, 0x00,
0x10, 0x10, 0x10, 0xF0, 0x00,
0x00, 0x00, 0x00, 0x1F, 0x10,
0x10, 0x10, 0x10, 0x1F, 0x10,
0x10, 0x10, 0x10, 0xF0, 0x10,
0x00, 0x00, 0x00, 0xFF, 0x10,
0x10, 0x10, 0x10, 0x10, 0x10,
0x10, 0x10, 0x10, 0xFF, 0x10,
0x00, 0x00, 0x00, 0xFF, 0x14,
0x00, 0x00, 0xFF, 0x00, 0xFF,
0x00, 0x00, 0x1F, 0x10, 0x17,
0x00, 0x00, 0xFC, 0x04, 0xF4,
0x14, 0x14, 0x17, 0x10, 0x17,
0x14, 0x14, 0xF4, 0x04, 0xF4,
0x00, 0x00, 0xFF, 0x00, 0xF7,
0x14, 0x14, 0x14, 0x14, 0x14,
0x14, 0x14, 0xF7, 0x00, 0xF7,
0x14, 0x14, 0x14, 0x17, 0x14,
0x10, 0x10, 0x1F, 0x10, 0x1F,
0x14, 0x14, 0x14, 0xF4, 0x14,
0x10, 0x10, 0xF0, 0x10, 0xF0,
0x00, 0x00, 0x1F, 0x10, 0x1F,
0x00, 0x00, 0x00, 0x1F, 0x14,
0x00, 0x00, 0x00, 0xFC, 0x14,
0x00, 0x00, 0xF0, 0x10, 0xF0,
0x10, 0x10, 0xFF, 0x10, 0xFF,
0x14, 0x14, 0x14, 0xFF, 0x14,
0x10, 0x10, 0x10, 0x1F, 0x00,
0x00, 0x00, 0x00, 0xF0, 0x10,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xF0, 0xF0, 0xF0, 0xF0, 0xF0,
0xFF, 0xFF, 0xFF, 0x00, 0x00,
0x00, 0x00, 0x00, 0xFF, 0xFF,
0x0F, 0x0F, 0x0F, 0x0F, 0x0F,
0x38, 0x44, 0x44, 0x38, 0x44,
0xFC, 0x4A, 0x4A, 0x4A, 0x34,
0x7E, 0x02, 0x02, 0x06, 0x06,
0x02, 0x7E, 0x02, 0x7E, 0x02,
0x63, 0x55, 0x49, 0x41, 0x63,
0x38, 0x44, 0x44, 0x3C, 0x04,
0x40, 0x7E, 0x20, 0x1E, 0x20,
0x06, 0x02, 0x7E, 0x02, 0x02,
0x99, 0xA5, 0xE7, 0xA5, 0x99,
0x1C, 0x2A, 0x49, 0x2A, 0x1C,
0x4C, 0x72, 0x01, 0x72, 0x4C,
0x30, 0x4A, 0x4D, 0x4D, 0x30,
0x30, 0x48, 0x78, 0x48, 0x30,
0xBC, 0x62, 0x5A, 0x46, 0x3D,
0x3E, 0x49, 0x49, 0x49, 0x00,
0x7E, 0x01, 0x01, 0x01, 0x7E,
0x2A, 0x2A, 0x2A, 0x2A, 0x2A,
0x44, 0x44, 0x5F, 0x44, 0x44,
0x40, 0x51, 0x4A, 0x44, 0x40,
0x40, 0x44, 0x4A, 0x51, 0x40,
0x00, 0x00, 0xFF, 0x01, 0x03,
0xE0, 0x80, 0xFF, 0x00, 0x00,
0x08, 0x08, 0x6B, 0x6B, 0x08,
0x36, 0x12, 0x36, 0x24, 0x36,
0x06, 0x0F, 0x09, 0x0F, 0x06,
0x00, 0x00, 0x18, 0x18, 0x00,
0x00, 0x00, 0x10, 0x10, 0x00,
0x30, 0x40, 0xFF, 0x01, 0x01,
0x00, 0x1F, 0x01, 0x01, 0x1E,
0x00, 0x19, 0x1D, 0x17, 0x12,
0x00, 0x3C, 0x3C, 0x3C, 0x3C,
0x00, 0x00, 0x00, 0x00, 0x00
};
//***** Functions prototypes *****//
//1. Write Command to LCD
void ILI9488_SendCommand(uint8_t com)
{
//*(__IO uint8_t *)(0x60000000) = com;
uint8_t tmpCmd = com;
DC_COMMAND();
CS_A();
//Write byte using SPI
HAL_SPI_Transmit(&hspi1, &tmpCmd, 1, 1);
CS_D();
}
//2. Write data to LCD
void ILI9488_SendData(uint8_t data)
{
uint8_t tmpCmd = data;
DC_DATA();
CS_A();
HAL_SPI_Transmit(&hspi1, &tmpCmd, 1, 1);
CS_D();
}
//2.2 Write multiple/DMA
void ILI9488_SendData_Multi(uint8_t *buff, size_t buff_size){
DC_DATA();
CS_A();
while (buff_size > 0){
uint16_t chunk_size = buff_size > 32768 ? 32768 : buff_size;
HAL_SPI_Transmit(&hspi1, buff, chunk_size, HAL_MAX_DELAY);
buff += chunk_size;
buff_size -= chunk_size;
}
CS_D();
}
void ILI9488_Init()
{
CS_D();
RST_A();
HAL_Delay(10);
RST_D();
width=ILI9488_TFTWIDTH;
height=ILI9488_TFTHEIGHT;
//CS_A();
ILI9488_SendCommand(0xE0);
ILI9488_SendData(0x00);
ILI9488_SendData(0x03);
ILI9488_SendData(0x09);
ILI9488_SendData(0x08);
ILI9488_SendData(0x16);
ILI9488_SendData(0x0A);
ILI9488_SendData(0x3F);
ILI9488_SendData(0x78);
ILI9488_SendData(0x4C);
ILI9488_SendData(0x09);
ILI9488_SendData(0x0A);
ILI9488_SendData(0x08);
ILI9488_SendData(0x16);
ILI9488_SendData(0x1A);
ILI9488_SendData(0x0F);
ILI9488_SendCommand(0XE1);
ILI9488_SendData(0x00);
ILI9488_SendData(0x16);
ILI9488_SendData(0x19);
ILI9488_SendData(0x03);
ILI9488_SendData(0x0F);
ILI9488_SendData(0x05);
ILI9488_SendData(0x32);
ILI9488_SendData(0x45);
ILI9488_SendData(0x46);
ILI9488_SendData(0x04);
ILI9488_SendData(0x0E);
ILI9488_SendData(0x0D);
ILI9488_SendData(0x35);
ILI9488_SendData(0x37);
ILI9488_SendData(0x0F);
ILI9488_SendCommand(0XC0); //Power Control 1
ILI9488_SendData(0x17); //Vreg1out
ILI9488_SendData(0x15); //Verg2out
ILI9488_SendCommand(0xC1); //Power Control 2
ILI9488_SendData(0x41); //VGH,VGL
ILI9488_SendCommand(0xC5); //Power Control 3
ILI9488_SendData(0x00);
ILI9488_SendData(0x12); //Vcom
ILI9488_SendData(0x80);
ILI9488_SendCommand(0x36); //Memory Access
ILI9488_SendData(0x48);
ILI9488_SendCommand(0x3A); // Interface Pixel Format
ILI9488_SendData(0x66); //18 bit
ILI9488_SendCommand(0XB0); // Interface Mode Control
ILI9488_SendData(0x80); //SDO NOT USE
ILI9488_SendCommand(0xB1); //Frame rate
ILI9488_SendData(0xA0); //60Hz
ILI9488_SendCommand(0xB4); //Display Inversion Control
ILI9488_SendData(0x02); //2-dot
ILI9488_SendCommand(0XB6); //Display Function Control RGB/MCU Interface Control
ILI9488_SendData(0x02); //MCU
ILI9488_SendData(0x02); //Source,Gate scan dieection
ILI9488_SendCommand(0XE9); // Set Image Functio
ILI9488_SendData(0x00); // Disable 24 bit data
ILI9488_SendCommand(0xF7); // Adjust Control
ILI9488_SendData(0xA9);
ILI9488_SendData(0x51);
ILI9488_SendData(0x2C);
ILI9488_SendData(0x82); // D7 stream, loose
ILI9488_SendCommand(ILI9488_SLPOUT); //Exit Sleep
HAL_Delay(120);
ILI9488_SendCommand(ILI9488_DISPON); //Display on
}
void setAddrWindow(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1)
{
/*ILI9488_SendCommand(ILI9488_CASET); // Column addr set
ILI9488_SendData(x0 >> 8);
ILI9488_SendData(x0 & 0xFF); // XSTART
ILI9488_SendData(x1 >> 8);
ILI9488_SendData(x1 & 0xFF); // XEND
ILI9488_SendCommand(ILI9488_PASET); // Row addr set
ILI9488_SendData(y0 >> 8);
ILI9488_SendData(y0 & 0xff); // YSTART
ILI9488_SendData(y1 >> 8);
ILI9488_SendData(y1 & 0xff); // YEND
ILI9488_SendCommand(ILI9488_RAMWR); // write to RAM*/
ILI9488_SendCommand(ILI9488_CASET); // Column addr set
{
uint8_t data[] = {(x0 >> 8) & 0xFF, x0 & 0xFF, (x1 >> 8) & 0xFF, x1 & 0xFF};
ILI9488_SendData_Multi(data, sizeof(data));
}
ILI9488_SendCommand(ILI9488_PASET);
{
uint8_t data[] = {(y0 >> 8) & 0xFF, y0 & 0xFF, (y1 >> 8) & 0xFF, y1 & 0xFF};
ILI9488_SendData_Multi(data, sizeof(data));
}
ILI9488_SendCommand(ILI9488_RAMWR); // write to RAM*/
}
void setScrollArea(uint16_t topFixedArea, uint16_t bottomFixedArea)
{
ILI9488_SendCommand(0x33); // Vertical scroll definition
ILI9488_SendData(topFixedArea >> 8);
ILI9488_SendData(topFixedArea);
ILI9488_SendData((height - topFixedArea - bottomFixedArea) >> 8);
ILI9488_SendData(height - topFixedArea - bottomFixedArea);
ILI9488_SendData(bottomFixedArea >> 8);
ILI9488_SendData(bottomFixedArea);
}
void scroll(uint16_t pixels)
{
ILI9488_SendCommand(0x37); // Vertical scrolling start address
ILI9488_SendData(pixels >> 8);
ILI9488_SendData(pixels);
}
void pushColor(uint16_t color)
{
HAL_GPIO_WritePin(tftDC_GPIO, tftDC_PIN, GPIO_PIN_SET);
HAL_GPIO_WritePin(tftCS_GPIO, tftCS_PIN, GPIO_PIN_RESET);
write16BitColor(color);
HAL_GPIO_WritePin(tftCS_GPIO, tftCS_PIN, GPIO_PIN_SET);
}
void pushColors(uint16_t *data, uint8_t len, uint8_t first)
{
uint16_t color;
uint8_t buff[len * 3 + 1];
uint16_t count = 0;
uint8_t lencount = len;
HAL_GPIO_WritePin(tftCS_GPIO, tftCS_PIN, GPIO_PIN_RESET);
if (first == 1) {
HAL_GPIO_WritePin(tftDC_GPIO, tftDC_PIN, GPIO_PIN_SET);
}
while (lencount--)
{
color = *data++;
buff[count] = (((color & 0xF800) >> 11) * 255) / 31;
count++;
buff[count] = (((color & 0x07E0) >> 5) * 255) / 63;
count++;
buff[count] = ((color & 0x001F) * 255) / 31;
count++;
}
HAL_SPI_Transmit(&lcdSPIhandle, buff, len * 3, 100);
HAL_GPIO_WritePin(tftCS_GPIO, tftCS_PIN, GPIO_PIN_SET);
}
void drawImage(const uint8_t* img, uint16_t x, uint16_t y, uint16_t w, uint16_t h)
{
if ((x >= width) || (y >= height))
return;
if ((x + w - 1) >= width)
w = width - x;
if ((y + h - 1) >= height)
h = height - y;
setAddrWindow(x, y, x + w - 1, y + h - 1);
DC_DATA();
CS_A();
//HAL_GPIO_WritePin(tftDC_GPIO, tftDC_PIN, GPIO_PIN_SET);
//HAL_GPIO_WritePin(tftCS_GPIO, tftCS_PIN, GPIO_PIN_RESET);
uint8_t linebuff[w * 3 + 1];
uint32_t count = 0;
for (uint16_t i = 0; i < h; i++) {
uint16_t pixcount = 0;
for (uint16_t o = 0; o < w; o++) {
uint8_t b1 = img[count];
count++;
uint8_t b2 = img[count];
count++;
uint16_t color = b1 << 8 | b2;
linebuff[pixcount] = (((color & 0xF800) >> 11) * 255)
/ 31;
pixcount++;
linebuff[pixcount] = (((color & 0x07E0) >> 5) * 255)
/ 63;
pixcount++;
linebuff[pixcount] = ((color & 0x001F) * 255) / 31;
pixcount++;
}
HAL_SPI_Transmit(&lcdSPIhandle, linebuff, w * 3, 100);
}
CS_D();
//HAL_GPIO_WritePin(tftCS_GPIO, tftCS_PIN, GPIO_PIN_SET);
}
void drawPixel(int16_t x, int16_t y, uint16_t color)
{
if ((x < 0) || (x >= width) || (y < 0) || (y >= height))
return;
setAddrWindow(x, y, x + 1, y + 1);
DC_DATA();
CS_A();
write16BitColor(color);
CS_D();
}
void drawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t color)
{
if ((x >= width) || (y >= height))
return;
if ((y + h - 1) >= height)
h = height - y;
setAddrWindow(x, y, x, y + h - 1);
DC_DATA();
CS_A();
//HAL_GPIO_WritePin(tftDC_GPIO, tftDC_PIN, GPIO_PIN_SET);
//HAL_GPIO_WritePin(tftCS_GPIO, tftCS_PIN, GPIO_PIN_RESET);
while (h--) {
write16BitColor(color);
}
CS_D();
//HAL_GPIO_WritePin(tftCS_GPIO, tftCS_PIN, GPIO_PIN_SET);
}
void drawFastHLine(int16_t x, int16_t y, int16_t w, uint16_t color)
{
if ((x >= width) || (y >= height))
return;
if ((x + w - 1) >= width)
w = width - x;
setAddrWindow(x, y, x + w - 1, y);
DC_DATA();
CS_A();
//HAL_GPIO_WritePin(tftDC_GPIO, tftDC_PIN, GPIO_PIN_SET);
//HAL_GPIO_WritePin(tftCS_GPIO, tftCS_PIN, GPIO_PIN_RESET);
while (w--)
{
write16BitColor(color);
}
CS_D();
//HAL_GPIO_WritePin(tftCS_GPIO, tftCS_PIN, GPIO_PIN_SET);
}
void drawLine(int16_t x0, int16_t y0, int16_t x1, int16_t y1, uint16_t color)
{
if (x0 == x1) {
if (y0 > y1)
swap(y0, y1);
drawFastVLine(x0, y0, y1 - y0 + 1, color);
} else if (y0 == y1) {
if (x0 > x1)
swap(x0, x1);
drawFastHLine(x0, y0, x1 - x0 + 1, color);
} else {
writeLine(x0, y0, x1, y1, color);
}
}
void writeLine(int16_t x0, int16_t y0, int16_t x1, int16_t y1, uint16_t color) {
int16_t steep = abs(y1 - y0) > abs(x1 - x0);
if (steep) {
swap(x0, y0);
swap(x1, y1);
}
if (x0 > x1) {
swap(x0, x1);
swap(y0, y1);
}
int16_t dx, dy;
dx = x1 - x0;
dy = abs(y1 - y0);
int16_t err = dx / 2;
int16_t ystep;
if (y0 < y1) {
ystep = 1;
} else {
ystep = -1;
}
for (; x0 <= x1; x0++) {
if (steep) {
drawPixel(y0, x0, color);
} else {
drawPixel(x0, y0, color);
}
err -= dy;
if (err < 0) {
y0 += ystep;
err += dx;
}
}
}
//6. Fill the entire screen with a background color
void fillScreen(uint16_t color)
{
fillRect(0, 0, width, height, color);
}
void fillRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color)
{
uint32_t i, n, cnt, buf_size;
if ((x >= width) || (y >= height))
return;
if ((x + w - 1) >= width)
w = width - x;
if ((y + h - 1) >= height)
h = height - y;
setAddrWindow(x, y, x + w - 1, y + h - 1);
uint8_t r = (color & 0xF800) >> 11;
uint8_t g = (color & 0x07E0) >> 5;
uint8_t b = color & 0x001F;
r = (r * 255) / 31;
g = (g * 255) / 63;
b = (b * 255) / 31;
n = w*h*3;
if (n <= 65535){
cnt = 1;
buf_size = n;
}
else {
cnt = n/3;
buf_size = 3;
uint8_t min_cnt = n/65535+1;
for (i=min_cnt; i < n/3; i++){
if(n%i == 0){
cnt = i;
buf_size = n/i;
break;
}
}
}
uint8_t frm_buf[buf_size];
for (i=0; i < buf_size/3; i++)
{
frm_buf[i*3] = r;
frm_buf[i*3+1] = g;
frm_buf[i*3+2] = b;
}
DC_DATA();
CS_A();
while(cnt>0)
{
HAL_SPI_Transmit(&hspi1, frm_buf, buf_size, HAL_MAX_DELAY);
cnt -= 1;
}
CS_D();
}
void setRotation(uint8_t r)
{
ILI9488_SendCommand(ILI9488_MADCTL);
uint8_t rotation = r % 4; // can't be higher than 3
switch (rotation) {
case 0:
ILI9488_SendData(MADCTL_MX | MADCTL_BGR);
width = ILI9488_TFTWIDTH;
height = ILI9488_TFTHEIGHT;
break;
case 1:
ILI9488_SendData(MADCTL_MV | MADCTL_BGR);
width = ILI9488_TFTHEIGHT;
height = ILI9488_TFTWIDTH;
break;
case 2:
ILI9488_SendData(MADCTL_MY | MADCTL_BGR);
width = ILI9488_TFTWIDTH;
height = ILI9488_TFTHEIGHT;
break;
case 3:
ILI9488_SendData(MADCTL_MX | MADCTL_MY | MADCTL_MV | MADCTL_BGR);
width = ILI9488_TFTHEIGHT;
height = ILI9488_TFTWIDTH;
break;
}
}
void invertDisplay(uint8_t i)
{
ILI9488_SendCommand(i ? ILI9488_INVON : ILI9488_INVOFF);
}
uint16_t color565(uint8_t r, uint8_t g, uint8_t b)
{
return ((r & 0xF8) << 8) | ((g & 0xFC) << 3) | (b >> 3);
}
//11. Text printing functions
void drawChar(int16_t x, int16_t y, unsigned char c, uint16_t color, uint16_t bg, uint8_t size)
{
uint8_t font_size;
font_size = size;
if(rotationNum == 1 || rotationNum ==3)
{
if((x >= ILI9488_TFTWIDTH) || // Clip right
(y >= ILI9488_TFTHEIGHT) || // Clip bottom
((x + 6 * font_size - 1) < 0) || // Clip left
((y + 8 * font_size - 1) < 0)) // Clip top
return;
}
else
{
if((y >= ILI9488_TFTWIDTH) || // Clip right
(x >= ILI9488_TFTHEIGHT) || // Clip bottom
((y + 6 * font_size - 1) < 0) || // Clip left
((x + 8 * font_size - 1) < 0)) // Clip top
return;
}
if(!_cp437 && (c >= 176)) c++; // Handle 'classic' charset behavior
for (int8_t i=0; i<6; i++ ) {
uint8_t line;
if (i == 5)
line = 0x0;
else
line = pgm_read_byte(font1+(c*5)+i);
for (int8_t j = 0; j<8; j++) {
if (line & 0x1) {
if (font_size == 1) // default size
drawPixel(x+i, y+j, color);
else { // big size
fillRect(x+(i*font_size), y+(j*font_size), font_size, font_size, color);
}
} else if (bg != color) {
if (font_size == 1) // default size
drawPixel(x+i, y+j, bg);
else { // big size
fillRect(x+(i*font_size), y+(j*font_size), font_size, font_size, bg);
}
}
line >>= 1;
}
}
}
void ILI9488_printText(char text[], int16_t x, int16_t y, uint16_t color, uint16_t bg, uint8_t size)
{
int16_t offset;
offset = size*6;
for(uint16_t i=0; i<40 && text[i]!=NULL; i++)
{
drawChar(x+(offset*i), y, text[i],color,bg,size);
}
}
void testLines(uint8_t color)
{
unsigned long start, t;
int x1, y1, x2, y2, w = width, h = height;
fillScreen(ILI9488_BLACK);
x1 = y1 = 0;
y2 = h - 1;
for (x2 = 0; x2 < w; x2 += 6)
drawLine(x1, y1, x2, y2, color);
x2 = w - 1;
for (y2 = 0; y2 < h; y2 += 6)
drawLine(x1, y1, x2, y2, color);
fillScreen(ILI9488_BLACK);
x1 = w - 1;
y1 = 0;
y2 = h - 1;
for (x2 = 0; x2 < w; x2 += 6)
drawLine(x1, y1, x2, y2, color);
x2 = 0;
for (y2 = 0; y2 < h; y2 += 6)
drawLine(x1, y1, x2, y2, color);
fillScreen(ILI9488_BLACK);
x1 = 0;
y1 = h - 1;
y2 = 0;
for (x2 = 0; x2 < w; x2 += 6)
drawLine(x1, y1, x2, y2, color);
x2 = w - 1;
for (y2 = 0; y2 < h; y2 += 6)
drawLine(x1, y1, x2, y2, color);
fillScreen(ILI9488_BLACK);
x1 = w - 1;
y1 = h - 1;
y2 = 0;
for (x2 = 0; x2 < w; x2 += 6)
drawLine(x1, y1, x2, y2, color);
x2 = 0;
for (y2 = 0; y2 < h; y2 += 6)
drawLine(x1, y1, x2, y2, color);
}
void write16BitColor(uint16_t color)
{
uint8_t r = (color & 0xF800) >> 11;
uint8_t g = (color & 0x07E0) >> 5;
uint8_t b = color & 0x001F;
r = (r * 255) / 31;
g = (g * 255) / 63;
b = (b * 255) / 31;
uint8_t data[3] = {r, g, b};
ILI9488_SendData_Multi(data, 3);
//HAL_SPI_Transmit(&hspi1, (uint8_t *)&r, 1, 10);
//HAL_SPI_Transmit(&hspi1, (uint8_t *)&g, 1, 10);
//HAL_SPI_Transmit(&hspi1, (uint8_t *)&b, 1, 10);
}
3、添加测试函数如下：
/* USER CODE BEGIN 2 */
ILI9488_Init();
HAL_Delay(1000);
setRotation(0);
char badmpu[] = "HELLO 21IC";
fillScreen(ILI9488_BLACK);
fillScreen(ILI9488_WHITE);
ILI9488_printText(badmpu,10,10,ILI9488_BLACK,ILI9488_WHITE,1);
ILI9488_printText(badmpu,10,20,ILI9488_BLUE,ILI9488_WHITE,2);
ILI9488_printText(badmpu,10,50,ILI9488_GREEN,ILI9488_WHITE,3);
ILI9488_printText(badmpu,10,50,ILI9488_RED,ILI9488_WHITE,4);
testLines(ILI9488_BLUE);
/* USER CODE END 2 */
【实验效果】
【总结】
1.stm32u5系列拥有高频率、大内存，运行速超级快.
2. stm32拥有超级好用的stm32CubeIDE，配置、只要运行在hal库下面的驱动，可以实现少量代码的修改后，轻松移植到不同的芯片上的工程中。
3. 在实现LCD的驱动后，我们运行ADC、PWM、UART等信息，可以实时的显示到LCD屏上，实现交互信息的方便查看等。
【工程源码】
U5A5ZQ_tft.zip
(1.53 MB)
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