代码收藏家 基于单片机的蓝牙相机毕业设计：设计与实现
文章目录
0 前言
🔥 这两年开始毕业设计和毕业答辩的要求和难度不断提升，传统的毕设题目缺少创新和亮点，往往达不到毕业答辩的要求，这两年不断有学弟学妹告诉学长自己做的项目系统达不到老师的要求。
为了大家能够顺利以及最少的精力通过毕设，学长分享优质毕业设计项目，今天要分享的是
🚩 基于单片机的蓝牙相机设计与实现
🥇学长这里给一个题目综合评分(每项满分5分)
🧿 毕设项目分享:见文末!
1 简介
基于Arduino单片机的蓝牙相机，想通过蓝牙在100到501次的Android手机和Arduino UNO之间交换数据。但我想传输的不仅仅是一组字符和数字，还包括图片。
通过Arduino和Android手机之间的蓝牙连接，从Arduino UNO上的OV7670相机获取图片并将其传输到Android手机。然后，相反，将图片（来自相机的图像）从Android手机传输到Arduino UNO，并将其显示在独特的TFT屏蔽屏幕上。
2 主要器件
3 实现效果
4 硬件设计
蓝牙模块
需要将蓝牙模块中的汇率设置为115200（命令“AT+ UART = 115200，0，0”）。这是Arduino UNO设法接收和处理数据的最佳速度。（从理论上讲，您可以提高速度，优化数据接收和处理，但这需要更多的RAM）。有关如何设置汇率的更详细说明可以在互联网上找到。
注意的是，蓝牙模块连接到Arduino UNO的调试端口。因此，当使用蓝牙时，调试端口不可用。在编程之前，Arduino UNO（包括蓝牙模块）必须断开蓝牙模块的连接。编程后，将其设置回去。
设备的组装非常简单：
打开电源后，TFT扩展板的屏幕应变为红色。这意味着愿意从Android手机接收命令。
5 软件说明
所有演示草图都是在Arduino IDE环境中编写的，因此在开始时需要安装Arduino IDE -环境。然后，您需要为TFT shield安装一个库 – github.com/YATFT/YATFT（下载该库并将其解压缩到Arduino IDE目录中的“库”文件夹中）。
安装Arduino IDE后，您必须对Arduino UNO板进行编程。为简单起见，我建议单独闪烁，不带TFT屏蔽。为此：
如果Arduino UNO板已成功编程，则可以继续下一步。
安卓部分
在安卓手机上执行以下操作：
屏幕上应显示两个窗口和四个按钮：
按钮功能：
6 部分核心代码
ArduinoBluetoothCamera.ino sketch：
#include <YATFT.h>
#include <util/yacam.h>
#include <util/yacodec.h>
#include <util/yasrl.h>
#include "ov7670_regs.h"
JPEG_DECODE jpeg_decode;
YATFT tft(0);
INTRFC ifc;
CAM cam;
CODEC codec;
SRL srl;
#define IMG_SizeX 320
#define IMG_SizeY 240
uint8_t mode = 0;
uint8_t last_mode = 0;
uint8_t start_capt = 0;
uint16_t err;
void setup()
{
// initialize the serial port
Serial.begin(115200);
// initialize the display
tft.begin();
tft.SetColor(BRIGHTRED);
tft.ClearDevice();
}
void loop()
{
// put your main code here, to run repeatedly:
if (Serial.available())
{
uint8_t temp = Serial.read();
switch (temp)
{
case 0x10: // Send single Photo
mode = 1;
start_capt = 1;
if (last_mode != mode && last_mode != 2) {
tft.begin();
tft.SetRGB(); // Switch to RGB mode
cam.CamInit(&OV7670_QVGA[0][0]);
cam.CamVideoPreview(0, 0, 1, true);
codec.JPEGInit();
codec.JPEGSetRegs(IMG_SizeX, IMG_SizeY);
delay(1000);
}
break;
case 0x20: // Continuous send Photo
mode = 2;
start_capt = 2;
if (last_mode != mode && last_mode != 1) {
tft.begin();
tft.SetRGB(); // Switch to RGB mode
cam.CamInit(&OV7670_QVGA[0][0]);
cam.CamVideoPreview(0, 0, 1, true);
codec.JPEGInit();
codec.JPEGSetRegs(IMG_SizeX, IMG_SizeY);
}
break;
case 0x30: // Receive single Photo
mode = 3;
start_capt = 3;
if (last_mode != mode && last_mode != 4) {
tft.begin();
tft.SetYUV(); // Switch to YUV mode
}
break;
case 0x40: // Continuous receive Photo
mode = 4;
start_capt = 4;
if (last_mode != mode && last_mode != 3) {
tft.begin();
tft.SetYUV(); // Switch to YUV mode
}
break;
default:
break;
}
}
if (mode == 1) // Send single Photo
{
if (start_capt == 1)
{
start_capt = 0;
last_mode = mode;
mode = 0;
CamCapture();
}
}
else if (mode == 2) // Continuous send Photo
{
while (1)
{
uint8_t temp = Serial.read();
if (start_capt == 2)
{
start_capt = 0;
}
if (temp == 0x21) // Stop ?
{
start_capt = 0;
last_mode = mode;
mode = 0;
break;
}
if (CamCapture()) continue;
}
}
else if (mode == 3) // Receive single Photo
{
if (start_capt == 3)
{
//Start capture
start_capt = 0;
last_mode = mode;
mode = 0;
Serial.print("!");
srl.JPEGReadFromSerial(&jpeg_decode, // jpeg decode structure
0, // x0 (left)
0, // y0 (top)
GetMaxX()+1, // x1 (right)
GetMaxY()+1, // y1 (bottom)
32000); // max image size
}
}
else if (mode == 4) // Continuous receive Photo
{
uint8_t temp = Serial.read();
while (1)
{
if (start_capt == 4)
{
//Start capture
start_capt = 0;
}
if (temp == 0x41) // Stop ?
{
start_capt = 0;
last_mode = mode;
mode = 0;
break;
}
Serial.print("!");
srl.JPEGReadFromSerial(&jpeg_decode, // jpeg decode structure
0, // x0 (left)
0, // y0 (top)
GetMaxX()+1, // x1 (right)
GetMaxY()+1, // y1 (bottom)
32000); // max image size
}
}
}
uint8_t CamCapture(void)
{
uint8_t temp = 0xff, temp_last = 0;
bool is_header = false;
uint32_t length = 0;
length = codec.JPEGStart();
uint32_t en_jpeg_address = ifc.rdReg32(0x414)<<2;
int k = 0;
if ((length >= 0x5FFFF) | (length == 0))
{
start_capt = 2;
return 1;
}
temp = ifc.GetMem(en_jpeg_address+k);
k++;
length --;
while ( length-- )
{
temp_last = temp;
temp = ifc.GetMem(en_jpeg_address+k);
k++;
if (is_header == true)
{
Serial.write(temp);
}
else if ((temp == 0xD8) & (temp_last == 0xFF))
{
is_header = true;
Serial.write(temp_last);
Serial.write(temp);
}
if ( (temp == 0xD9) && (temp_last == 0xFF) ) //If find the end ,break while,
break;
}
is_header = false;
return 0;
}
OV7670_regs.h：
#ifndef OV7670_REGS_H
#define OV7670_REGS_H
const uint8_t OV7670_VGA[][2] PROGMEM =
{
{ 1, 0x42}, // Size of byte, Address (ID)
{ 640/16, 480/16}, // Size X, Size Y
{0b01000010, 0b00000100}, // Reset_Enable_N, 7|6|5|4|3|Vsync Invert|Hsync Invert|0
{0x3a, 0x0C}, {0x40, 0xC0}, {0x12, 0x00}, {0x0c, 0x00},
{0x3e, 0x00}, {0x70, 0x3A}, {0x71, 0x35}, {0x72, 0x11},
{0x73, 0xF0}, {0xa2, 0x02}, {0x11, 0x80}, {0x7a, 0x18},
{0x7b, 0x02}, {0x7c, 0x07}, {0x7d, 0x1F}, {0x7e, 0x49},
{0x7f, 0x5A}, {0x80, 0x6A}, {0x81, 0x79}, {0x82, 0x87},
{0x83, 0x94}, {0x84, 0x9F}, {0x85, 0xAF}, {0x86, 0xBB},
{0x87, 0xCF}, {0x88, 0xEE}, {0x89, 0xEE}, {0x13, 0xE0},
{0x00, 0x00}, {0x10, 0x00}, {0x0d, 0x00}, {0x24, 0x98},
{0x25, 0x63}, {0x26, 0xD3}, {0x2a, 0x00}, {0x2b, 0x00},
{0x2d, 0x00}, {0x13, 0xe5}, {0x13, 0xe7}, {0x1e, 0x30},
{0x74, 0x60}, {0x01, 0x80}, {0x02, 0x80}, {0x15, 0x10},
{0x4f, 0x40}, {0x50, 0x34}, {0x51, 0x0C}, {0x52, 0x17},
{0x53, 0x29}, {0x54, 0x40}, {0x57, 0x80}, {0x58, 0x1e},
{0x41, 0x10}, {0x75, 0x60}, {0x76, 0x50}, {0x77, 0x48},
{0x3d, 0x92}, {0x3b, 0x00}, {0x04, 0x00}, {0xff, 0xff},
};
const uint8_t OV7670_QVGA[][2] PROGMEM =
{
{ 1, 0x42}, // Size of byte, Address (ID)
{ 320/16, 240/16}, // Size X, Size Y
{0b01000010, 0b00000100}, // Reset_Enable_N, 7|6|5|4|3|Vsync Invert|Hsync Invert|0
{0x3a, 0x0C}, {0x40, 0xC0}, {0x12, 0x10}, {0x0c, 0x00},
{0x3e, 0x00}, {0x70, 0x3A}, {0x71, 0x35}, {0x72, 0x11},
{0x73, 0xF0}, {0xa2, 0x02}, {0x11, 0x80}, {0x7a, 0x18},
{0x7b, 0x02}, {0x7c, 0x07}, {0x7d, 0x1F}, {0x7e, 0x49},
{0x7f, 0x5A}, {0x80, 0x6A}, {0x81, 0x79}, {0x82, 0x87},
{0x83, 0x94}, {0x84, 0x9F}, {0x85, 0xAF}, {0x86, 0xBB},
{0x87, 0xCF}, {0x88, 0xEE}, {0x89, 0xEE}, {0x13, 0xE0},
{0x00, 0x00}, {0x10, 0x00}, {0x0d, 0x00}, {0x24, 0x98},
{0x25, 0x63}, {0x26, 0xD3}, {0x2a, 0x00}, {0x2b, 0x00},
{0x2d, 0x00}, {0x13, 0xe5}, {0x13, 0xe7}, {0x1e, 0x30},
{0x74, 0x60}, {0x01, 0x80}, {0x02, 0x80}, {0x15, 0x10},
{0x4f, 0x40}, {0x50, 0x34}, {0x51, 0x0C}, {0x52, 0x17},
{0x53, 0x29}, {0x54, 0x40}, {0x57, 0x80}, {0x58, 0x1e},
{0x41, 0x10}, {0x75, 0x60}, {0x76, 0x50}, {0x77, 0x48},
{0x3d, 0x92}, {0x3b, 0x00}, {0x04, 0x00}, {0xff, 0xff},
};
#endif
🧿 毕设项目分享:见文末!
7 最后
**项目分享: ** https://blog.csdn.net/m0_984093
作者：utnud
