Arduino将rgb565转bmp
时间: 2023-12-27 20:03:47 浏览: 38
你可以使用以下代码将RGB565格式的数据转换为BMP图像:
```cpp
#include <Adafruit_GFX.h> // Adafruit Graphics Library
#include <Adafruit_ILI9341.h> // Adafruit ILI9341 TFT Library
#define TFT_WIDTH 320
#define TFT_HEIGHT 240
Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC, TFT_RST, TFT_CLK, TFT_RST, TFT_MISO);
void setup() {
tft.begin();
tft.setRotation(3); // 设置显示方向为横屏(默认为竖屏)
}
void loop() {
// RGB565格式的图像数据
uint16_t image[] = {0xF800, 0x07E0, 0x001F, 0xFFFF};
// 创建BMP文件头
uint16_t fileSize = sizeof(image) + 54;
uint16_t reserved = 0;
uint16_t offset = 54;
uint16_t dibHeaderSize = 40;
uint16_t width = TFT_WIDTH;
uint16_t height = TFT_HEIGHT;
uint16_t planes = 1;
uint16_t bitsPerPixel = 16;
uint16_t compression = 0;
uint16_t imageSize = sizeof(image);
uint16_t xPixelsPerMeter = 0;
uint16_t yPixelsPerMeter = 0;
uint16_t totalColors = 0;
uint16_t importantColors = 0;
// 写入BMP文件头
tft.writecommand(0x36); // 指定写入BMP文件头的命令
// 文件头
tft.writedata('B');
tft.writedata('M');
tft.writedata(fileSize & 0xFF);
tft.writedata((fileSize >> 8) & 0xFF);
tft.writedata(reserved & 0xFF);
tft.writedata((reserved >> 8) & 0xFF);
tft.writedata(offset & 0xFF);
tft.writedata((offset >> 8) & 0xFF);
// DIB头
tft.writedata(dibHeaderSize & 0xFF);
tft.writedata((dibHeaderSize >> 8) & 0xFF);
tft.writedata(width & 0xFF);
tft.writedata((width >> 8) & 0xFF);
tft.writedata(height & 0xFF);
tft.writedata((height >> 8) & 0xFF);
tft.writedata(planes & 0xFF);
tft.writedata((planes >> 8) & 0xFF);
tft.writedata(bitsPerPixel & 0xFF);
tft.writedata((bitsPerPixel >> 8) & 0xFF);
tft.writedata(compression & 0xFF);
tft.writedata((compression >> 8) & 0xFF);
tft.writedata(imageSize & 0xFF);
tft.writedata((imageSize >> 8) & 0xFF);
tft.writedata(xPixelsPerMeter & 0xFF);
tft.writedata((xPixelsPerMeter >> 8) & 0xFF);
tft.writedata(yPixelsPerMeter & 0xFF);
tft.writedata((yPixelsPerMeter >> 8) & 0xFF);
tft.writedata(totalColors & 0xFF);
tft.writedata((totalColors >> 8) & 0xFF);
tft.writedata(importantColors & 0xFF);
tft.writedata((importantColors >> 8) & 0xFF);
// 写入图像数据
for (int i = 0; i < sizeof(image); i++) {
tft.writedata(image[i] & 0xFF);
tft.writedata((image[i] >> 8) & 0xFF);
}
// 结束
while (1) {}
}
```
这段代码假设你使用的是Adafruit ILI9341 TFT显示模块。你需要将相关库添加到你的Arduino项目中,并确保正确设置连接引脚。请根据你的具体硬件和需求对代码进行适当修改。
这段代码将创建一个BMP文件头,然后将RGB565格式的图像数据写入BMP文件。最后,程序将进入一个无限循环以保持图像显示在屏幕上。
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