esp32驱动st7789v2 240x320

首先，你需要在ESP32上安装一个支持SPI接口的库，例如ESP-IDF。

然后，你需要将ST7789V2显示屏连接到ESP32的SPI总线上。具体连接方式可以参考ST7789V2的数据手册和ESP32的开发板手册。

接下来，你可以使用ESP32的SPI库来控制ST7789V2显示屏。以下是一个简单的示例代码，可以将ESP32连接到ST7789V2显示屏并显示一些文本：

#include <SPI.h>
#include "ST7789V2.h"

#define TFT_DC 2
#define TFT_CS 5
#define TFT_RST 0

ST7789V2 tft = ST7789V2(TFT_DC, TFT_CS, TFT_RST);

void setup() {
  SPI.begin();
  tft.init();
  tft.fillScreen(ST7789V2_BLACK);
  tft.setCursor(0, 0);
  tft.setTextColor(ST7789V2_WHITE);
  tft.setTextSize(2);
  tft.println("Hello, ESP32!");
}

void loop() {
}

注意，以上示例代码仅供参考，你需要根据自己的具体情况进行修改和调整。如果你遇到了问题，可以查看ESP32和ST7789V2的文档和示例代码，或者在社区中寻求帮助。

相关问题

st7789v2 240x320驱动

ST7789V2是一款240x320分辨率的TFT液晶驱动IC。以下是一个简单的C语言示例代码，可以用于驱动ST7789V2：

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>

#include "st7789v2.h"

#define DELAY(ms) \
    do { \
        volatile uint32_t n = (SystemCoreClock / 1000) * (ms); \
        while (n--) \
            __NOP(); \
    } while (0)

#define SPI_TIMEOUT 5000

static void spi_write(uint8_t data)
{
    while (!(SPI2->SR & SPI_SR_TXE))
        ;
    *(volatile uint8_t *)&SPI2->DR = data;
    while (!(SPI2->SR & SPI_SR_RXNE))
        ;
    while (SPI2->SR & SPI_SR_BSY)
        ;
    (void)SPI2->DR;
}

static void spi_write16(uint16_t data)
{
    spi_write(data >> 8);
    spi_write(data & 0xFF);
}

static void spi_write_command(uint8_t cmd)
{
    GPIOB->BSRR = GPIO_BSRR_BR1; // DC low
    spi_write(cmd);
    GPIOB->BSRR = GPIO_BSRR_BS1; // DC high
}

static void spi_write_data(uint8_t data)
{
    spi_write(data);
}

static void spi_write_data16(uint16_t data)
{
    GPIOB->BSRR = GPIO_BSRR_BS1; // DC high
    spi_write16(data);
}

void st7789v2_init(void)
{
    uint8_t data;

    RCC->AHBENR |= RCC_AHBENR_GPIOBEN;
    RCC->APB1ENR |= RCC_APB1ENR_SPI2EN;

    // PB12 = SPI2_NSS
    GPIOB->MODER |= GPIO_MODER_MODER12_0;

    // PB13 = SPI2_SCK, PB14 = SPI2_MISO, PB15 = SPI2_MOSI
    GPIOB->MODER |= GPIO_MODER_MODER13_1 | GPIO_MODER_MODER14_1 | GPIO_MODER_MODER15_1;
    GPIOB->AFR[1] |= (5 << (1 * 4)) | (5 << (2 * 4)) | (5 << (3 * 4));

    SPI2->CR1 = SPI_CR1_SSM | SPI_CR1_SSI | SPI_CR1_MSTR | SPI_CR1_BR_0 | SPI_CR1_BR_1;
    SPI2->CR2 = SPI_CR2_DS_2 | SPI_CR2_DS_1 | SPI_CR2_DS_0;
    SPI2->CR1 |= SPI_CR1_SPE;

    // Reset display
    GPIOB->BSRR = GPIO_BSRR_BR0; // Reset low
    DELAY(50);
    GPIOB->BSRR = GPIO_BSRR_BS0; // Reset high
    DELAY(50);

    // Initialize display
    spi_write_command(0x11); // Exit sleep mode
    DELAY(120);

    spi_write_command(0x3A); // Set pixel format
    spi_write_data(0x55);

    spi_write_command(0xB2); // Set display mode
    spi_write_data(0x0C);
    spi_write_data(0x0C);
    spi_write_data(0x00);
    spi_write_data(0x33);
    spi_write_data(0x33);

    spi_write_command(0xB7); // Set vertical scroll
    spi_write_data(0x35);

    spi_write_command(0xBB); // Set display inversion
    spi_write_data(0x2B);

    spi_write_command(0xC0); // Set power control
    spi_write_data(0x2C);

    spi_write_command(0xC2); // Set VCOM
    spi_write_data(0x01);
    spi_write_data(0xFF);

    spi_write_command(0xC3); // Set VDV and VRH command enable
    spi_write_data(0x11);

    spi_write_command(0xC4); // Set VDV and VRH values
    spi_write_data(0x20);
    spi_write_data(0x00);

    spi_write_command(0xC6); // Set frame rate
    spi_write_data(0x0F);

    spi_write_command(0xD0); // Set panel driving
    spi_write_data(0xA4);
    spi_write_data(0xA1);

    spi_write_command(0xE0); // Set gamma curve
    spi_write_data(0xD0);
    spi_write_data(0x08);
    spi_write_data(0x11);
    spi_write_data(0x08);
    spi_write_data(0x0C);
    spi_write_data(0x15);
    spi_write_data(0x39);
    spi_write_data(0x33);
    spi_write_data(0x50);
    spi_write_data(0x36);
    spi_write_data(0x13);
    spi_write_data(0x14);
    spi_write_data(0x29);
    spi_write_data(0x2D);

    spi_write_command(0xE1); // Set gamma curve
    spi_write_data(0xD0);
    spi_write_data(0x08);
    spi_write_data(0x10);
    spi_write_data(0x08);
    spi_write_data(0x06);
    spi_write_data(0x06);
    spi_write_data(0x39);
    spi_write_data(0x44);
    spi_write_data(0x51);
    spi_write_data(0x0B);
    spi_write_data(0x16);
    spi_write_data(0x14);
    spi_write_data(0x2F);
    spi_write_data(0x31);

    spi_write_command(0x29); // Display on
}

void st7789v2_set_window(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1)
{
    spi_write_command(0x2A); // Set column address
    spi_write_data16(x0);
    spi_write_data16(x1);

    spi_write_command(0x2B); // Set page address
    spi_write_data16(y0);
    spi_write_data16(y1);

    spi_write_command(0x2C); // Memory write
}

void st7789v2_write_pixel(uint16_t color)
{
    spi_write_data16(color);
}

void st7789v2_fill_screen(uint16_t color)
{
    uint16_t x, y;

    st7789v2_set_window(0, 0, 239, 319);

    for (y = 0; y < 320; y++) {
        for (x = 0; x < 240; x++) {
            st7789v2_write_pixel(color);
        }
    }
}

该代码假设SPI2接口已经初始化，并且PB0和PB1用于复位和DC控制引脚。要使用该代码，只需调用`st7789v2_init()`来初始化液晶屏幕。要在屏幕上绘制像素，首先必须调用`st7789v2_set_window()`设置要绘制像素的窗口，然后使用`st7789v2_write_pixel()`写入像素值。要在屏幕上绘制图形，可以使用`st7789v2_fill_screen()`函数填充整个屏幕。

esp32驱动ST7789 代码

以下是一个简单的 ESP32 驱动 ST7789 显示屏的代码：

#include <Adafruit_GFX.h>
#include <Adafruit_ST7789.h>

#define TFT_CS         5
#define TFT_RST        -1  // 没有 Reset 引脚
#define TFT_DC         4
#define TFT_MOSI       23
#define TFT_SCLK       18

Adafruit_ST7789 tft = Adafruit_ST7789(TFT_CS, TFT_DC, TFT_MOSI, TFT_SCLK, TFT_RST);

void setup() {
  // 初始化串口和液晶屏
  Serial.begin(115200);
  tft.init(240, 240);  // ST7789 240x240 像素
  tft.setRotation(1);  // 旋转方向为图形横向

  // 填充白色背景
  tft.fillScreen(ST7735_WHITE);

  // 显示简单文本
  tft.setCursor(20, 120);
  tft.setTextColor(ST7735_BLACK);
  tft.setTextSize(4);
  tft.print("Hello world!");
}

void loop() {
  // 向下滚动文本
  tft.scroll(0, -4);

  delay(50);
}