用STM32F4编写程序用LCD屏ILI9341输出“张翼鹏”

以下是使用STM32F4和ILI9341 LCD屏幕输出“张翼鹏”的示例代码：

#include "stm32f4xx.h"
#include "stm32f4xx_gpio.h"
#include "stm32f4xx_spi.h"

// 定义SPI接口
#define LCD_SPI_PORT     SPI5
#define LCD_SPI_RCC      RCC_APB2Periph_SPI5
#define LCD_SPI_CLK      45000000

// 定义SPI引脚
#define LCD_SPI_SCK_PIN  GPIO_Pin_7
#define LCD_SPI_SCK_PORT GPIOA
#define LCD_SPI_MISO_PIN GPIO_Pin_11
#define LCD_SPI_MISO_PORT GPIOC
#define LCD_SPI_MOSI_PIN GPIO_Pin_12
#define LCD_SPI_MOSI_PORT GPIOC

// 定义LCD控制引脚
#define LCD_CS_PIN       GPIO_Pin_2
#define LCD_CS_PORT      GPIOB
#define LCD_DC_PIN       GPIO_Pin_1
#define LCD_DC_PORT      GPIOB
#define LCD_RST_PIN      GPIO_Pin_0
#define LCD_RST_PORT     GPIOB

// 定义LCD屏幕分辨率
#define LCD_WIDTH        240
#define LCD_HEIGHT       320

// 初始化SPI接口
void LCD_SPI_Init(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;
    SPI_InitTypeDef SPI_InitStructure;

    // 使能SPI时钟
    RCC_APB2PeriphClockCmd(LCD_SPI_RCC, ENABLE);

    // 配置SPI引脚
    GPIO_InitStructure.GPIO_Pin = LCD_SPI_SCK_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
    GPIO_Init(LCD_SPI_SCK_PORT, &GPIO_InitStructure);
    GPIO_PinAFConfig(LCD_SPI_SCK_PORT, GPIO_PinSource7, GPIO_AF_SPI5);

    GPIO_InitStructure.GPIO_Pin = LCD_SPI_MISO_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
    GPIO_Init(LCD_SPI_MISO_PORT, &GPIO_InitStructure);
    GPIO_PinAFConfig(LCD_SPI_MISO_PORT, GPIO_PinSource11, GPIO_AF_SPI5);

    GPIO_InitStructure.GPIO_Pin = LCD_SPI_MOSI_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
    GPIO_Init(LCD_SPI_MOSI_PORT, &GPIO_InitStructure);
    GPIO_PinAFConfig(LCD_SPI_MOSI_PORT, GPIO_PinSource12, GPIO_AF_SPI5);

    // 配置SPI
    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_Low;
    SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
    SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
    SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_2;
    SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
    SPI_InitStructure.SPI_CRCPolynomial = 7;
    SPI_Init(LCD_SPI_PORT, &SPI_InitStructure);

    // 使能SPI
    SPI_Cmd(LCD_SPI_PORT, ENABLE);
}

// 初始化LCD控制引脚
void LCD_GPIO_Init(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);

    GPIO_InitStructure.GPIO_Pin = LCD_CS_PIN | LCD_DC_PIN | LCD_RST_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
    GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
    GPIO_Init(GPIOB, &GPIO_InitStructure);
}

// 初始化LCD屏幕
void LCD_Init(void)
{
    LCD_GPIO_Init();
    LCD_SPI_Init();

    // 复位LCD屏幕
    GPIO_ResetBits(LCD_RST_PORT, LCD_RST_PIN);
    DelayMs(10);
    GPIO_SetBits(LCD_RST_PORT, LCD_RST_PIN);
    DelayMs(10);

    // 发送初始化命令
    LCD_WriteCommand(0x01); // 软件复位
    DelayMs(10);
    LCD_WriteCommand(0xCF);
    LCD_WriteData(0x00);
    LCD_WriteData(0xC1);
    LCD_WriteData(0x30);
    DelayMs(10);
    LCD_WriteCommand(0xED);
    LCD_WriteData(0x64);
    LCD_WriteData(0x03);
    LCD_WriteData(0x12);
    LCD_WriteData(0x81);
    DelayMs(10);
    LCD_WriteCommand(0xE8);
    LCD_WriteData(0x85);
    LCD_WriteData(0x10);
    LCD_WriteData(0x7A);
    DelayMs(10);
    LCD_WriteCommand(0xCB);
    LCD_WriteData(0x39);
    LCD_WriteData(0x2C);
    LCD_WriteData(0x00);
    LCD_WriteData(0x34);
    LCD_WriteData(0x02);
    DelayMs(10);
    LCD_WriteCommand(0xF7);
    LCD_WriteData(0x20);
    DelayMs(10);
    LCD_WriteCommand(0xEA);
    LCD_WriteData(0x00);
    LCD_WriteData(0x00);
    DelayMs(10);
    LCD_WriteCommand(0xC0); // 电源控制1
    LCD_WriteData(0x23);
    DelayMs(10);
    LCD_WriteCommand(0xC1); // 电源控制2
    LCD_WriteData(0x10);
    DelayMs(10);
    LCD_WriteCommand(0xC5); // VCOM控制1
    LCD_WriteData(0x3E);
    LCD_WriteData(0x28);
    DelayMs(10);
    LCD_WriteCommand(0xC7); // VCOM控制2
    LCD_WriteData(0x86);
    DelayMs(10);
    LCD_WriteCommand(0x36); // MADCTL
    LCD_WriteData(0x68);
    DelayMs(10);
    LCD_WriteCommand(0x3A); // COLMOD
    LCD_WriteData(0x55);
    DelayMs(10);
    LCD_WriteCommand(0xB1); // Frame rate control，最大 70 Hz，同时保证低功耗
    LCD_WriteData(0x00);
    LCD_WriteData(0x18);
    DelayMs(10);
    LCD_WriteCommand(0xB6); // Display function control，RGB/MCU interface select
    LCD_WriteData(0x08);
    LCD_WriteData(0x82);
    LCD_WriteData(0x27);
    DelayMs(10);
    LCD_WriteCommand(0xF2); // 3Gamma control，disable
    LCD_WriteData(0x00);
    DelayMs(10);
    LCD_WriteCommand(0x26); // Gamma curve selected
    LCD_WriteData(0x01);
    DelayMs(10);
    LCD_WriteCommand(0xE0); // Set Gamma，positive gamma correction
    LCD_WriteData(0x0F);
    LCD_WriteData(0x31);
    LCD_WriteData(0x2B);
    LCD_WriteData(0x0C);
    LCD_WriteData(0x0E);
    LCD_WriteData(0x08);
    LCD_WriteData(0x4E);
    LCD_WriteData(0xF1);
    LCD_WriteData(0x37);
    LCD_WriteData(0x07);
    LCD_WriteData(0x10);
    LCD_WriteData(0x03);
    LCD_WriteData(0x0E);
    LCD_WriteData(0x09);
    LCD_WriteData(0x00);
    DelayMs(10);
    LCD_WriteCommand(0XE1); // Set Gamma，negative gamma correction
    LCD_WriteData(0x00);
    LCD_WriteData(0x0E);
    LCD_WriteData(0x14);
    LCD_WriteData(0x03);
    LCD_WriteData(0x11);
    LCD_WriteData(0x07);
    LCD_WriteData(0x31);
    LCD_WriteData(0xC1);
    LCD_WriteData(0x48);
    LCD_WriteData(0x08);
    LCD_WriteData(0x0F);
    LCD_WriteData(0x0C);
    LCD_WriteData(0x31);
    LCD_WriteData(0x36);
    LCD_WriteData(0x0F);
    DelayMs(10);
    LCD_WriteCommand(0x11); // Sleep out
    DelayMs(120);
    LCD_WriteCommand(0x29); // Display on

    // 清屏
    LCD_Clear(0xFFFF);
}

// 写入数据到LCD屏幕
void LCD_WriteData(uint8_t data)
{
    GPIO_SetBits(LCD_DC_PORT, LCD_DC_PIN); // DC设置为高电平表示写入数据
    GPIO_ResetBits(LCD_CS_PORT, LCD_CS_PIN); // 使能片选
    while (SPI_I2S_GetFlagStatus(LCD_SPI_PORT, SPI_I2S_FLAG_TXE) == RESET); // 等待发送缓冲区为空
    SPI_I2S_SendData(LCD_SPI_PORT, data); // 发送数据
    while (SPI_I2S_GetFlagStatus(LCD_SPI_PORT, SPI_I2S_FLAG_RXNE) == RESET); // 等待接收缓冲区非空
    SPI_I2S_ReceiveData(LCD_SPI_PORT); // 读取接收到的数据，清除RXNE标志位
    GPIO_SetBits(LCD_CS_PORT, LCD_CS_PIN); // 禁止片选
}

// 写入命令到LCD屏幕
void LCD_WriteCommand(uint8_t cmd)
{
    GPIO_ResetBits(LCD_DC_PORT, LCD_DC_PIN); // DC设置为低电平表示写入命令
    GPIO_ResetBits(LCD_CS_PORT, LCD_CS_PIN); // 使能片选
    while (SPI_I2S_GetFlagStatus(LCD_SPI_PORT, SPI_I2S_FLAG_TXE) == RESET); // 等待发送缓冲区为空
    SPI_I2S_SendData(LCD_SPI_PORT, cmd); // 发送命令
    while (SPI_I2S_GetFlagStatus(LCD_SPI_PORT, SPI_I2S_FLAG_RXNE) == RESET); // 等待接收缓冲区非空
    SPI_I2S_ReceiveData(LCD_SPI_PORT); // 读取接收到的数据，清除RXNE标志位
    GPIO_SetBits(LCD_CS_PORT, LCD_CS_PIN); // 禁止片选
}

// 清屏
void LCD_Clear(uint16_t color)
{
    int i, j;
    LCD_SetArea(0, 0, LCD_WIDTH-1, LCD_HEIGHT-1);
    for (i = 0; i < LCD_HEIGHT; i++) {
        for (j = 0; j < LCD_WIDTH; j++) {
            LCD_WriteData(color >> 8);
            LCD_WriteData(color & 0xFF);
        }
    }
}

// 设置绘制区域
void LCD_SetArea(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2)
{
    LCD_WriteCommand(0x2A);
    LCD_WriteData(x1 >> 8);
    LCD_WriteData(x1 & 0xFF);
    LCD_WriteData(x2 >> 8);
    LCD_WriteData(x2 & 0xFF);
    LCD_WriteCommand(0x2B);
    LCD_WriteData(y1 >> 8);
    LCD_WriteData(y1 & 0xFF);
    LCD_WriteData(y2 >> 8);
    LCD_WriteData(y2 & 0xFF);
    LCD_WriteCommand(0x2C);
}

// 在指定位置绘制一个像素点
void LCD_DrawPixel(uint16_t x, uint16_t y, uint16_t color)
{
    LCD_SetArea(x, y, x, y);
    LCD_WriteData(color >> 8);
    LCD_WriteData(color & 0xFF);
}

// 在指定位置绘制一个字符
void LCD_DrawChar(uint16_t x, uint16_t y, char c, uint16_t color, uint16_t bgcolor)
{
    int i, j;
    uint8_t font[16];
    for (i = 0; i < 16; i++) {
        font[i] = Font16x16[c*16+i];
    }
    for (i = 0; i < 16; i++) {
        for (j = 0; j < 8; j++) {
            if (font[i] & (1 << (7-j))) {
                LCD_DrawPixel(x+j, y+i, color);
            } else {
                LCD_DrawPixel(x+j, y+i, bgcolor);
            }
        }
    }
}

// 在指定位置绘制一个字符串
void LCD_DrawString(uint16_t x, uint16_t y, char *str, uint16_t color, uint16_t bgcolor)
{
    while (*str) {
        LCD_DrawChar(x, y, *str++, color, bgcolor);
        x += 8;
    }
}

int main(void)
{
    LCD_Init();
    LCD_DrawString(50, 100, "张翼鹏", 0x0000, 0xFFFF);
    while (1) {}
}

在代码中，需要注意以下几点：

1. 需要定义LCD屏幕的SPI接口、引脚和分辨率；
2. 需要初始化SPI接口和LCD控制引脚；
3. 需要发送初始化命令，具体的命令可以参考LCD屏幕的数据手册；
4. 绘制字符和字符串时需要使用字库，本例中使用了一个16x16的字库，可以根据需要自行替换；
5. 绘制字符和字符串时需要注意字体的大小和颜色。
6. 在main函数中，我们先调用LCD_Init()函数初始化LCD屏幕，然后调用LCD_DrawString()函数在屏幕上绘制字符串“张翼鹏”。

需要注意的是，上述代码中的一些函数调用和数据类型可能与你的程序略有不同，需要根据具体情况进行修改。