零知开源小项目-Bad Apple 零知版本

零知实验室-roc

原文：零知开源小项目-Bad Apple 零知版本http://www.lingzhilab.com/forum. ... d&tid=323&fromuid=2
(出处: 零知实验室)

“有屏的地方就有Bad Apple”，现在我们零知开发板上也移植了这个Bad Apple，使用的是SD卡存储，OLED显示画面，主要是为了大家熟悉下OLED和SD卡这两个常用模块的应用。我们零知开发板刚好有两个硬件SPI接口，因此在这里两个设备都是使用的硬件SPI，速度都是大概是10兆，因此效果还不错。
1、硬件连接

• 零知标准板
• OLED-ssd1036
• SD卡（网络扩展板带）
  

OLED的连接直接参照之前oled的显示教程，不过我在这里该到了SPI2上，因此需要把MOSI,SCLK这两根线连接到SPI2对应的脚上（34,32）；
SD卡使用的是网络扩展板的SD卡，使用的micro SD卡，容量4g，直接把网络扩展板和零知板对接即可。

2、软件代码
程序很简单，就是SD卡上文件的读取，然后是OLED的图片显示。
说明：这里我使用的是BMP图片格式，较为简单，图片属性如下：

主要应用了PS软件进行批量更改图片为单色BMP格式。代码如下：

• /*
•   读取sd卡的bmp图片
• */
• #include <SPI.h>
• #include <SD.h>
• #include <Adafruit_SSD1306.h>
• //sd卡使用spi1
• //oled使用spi2
• #define OLED_DC    1
• #define OLED_CS    2
• #define OLED_RESET 0
• Adafruit_SSD1306 display(OLED_DC, OLED_RESET, OLED_CS);
• const int chipSelect = SS;
• unsigned char buff[1086] = {0};
• //Lingzhi logo
• static const unsigned char pic[] =
• {
• 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
• 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
• 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
• 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x1F,0x00,0x00,0x00,0x00,0x00,0x00,
• 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x00,0x00,0x00,0x00,0x00,0x00,
• 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0F,0xE0,0x00,0x00,0x00,0x00,0x00,
• 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFC,0x70,0x00,0x00,0x00,0x00,0x00,
• 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xA9,0x00,0x00,0x00,0x00,0x00,0x00,
• 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x29,0x00,0x00,0x00,0x00,0x00,0x00,
• 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x2C,0x00,0x00,0x00,0x00,0x00,0x00,
• 0x00,0x00,0x1C,0x00,0x00,0x00,0x00,0x06,0x00,0x12,0x00,0x00,0x00,0x00,0x00,0x00,
• 0x00,0x00,0x3E,0x00,0x00,0x00,0x00,0x0F,0x00,0x29,0x00,0x00,0x00,0x00,0x00,0x00,
• 0x00,0x00,0x7F,0x00,0x00,0x00,0x00,0x1F,0x80,0x4F,0xE0,0x06,0x00,0x00,0x00,0x00,
• 0x00,0x00,0xFF,0x80,0x00,0x00,0x00,0x3F,0xC1,0x3A,0x38,0x04,0x00,0x00,0x00,0x00,
• 0x00,0x01,0xFF,0xC0,0x00,0x00,0x00,0xFF,0xE0,0x04,0x00,0x04,0x00,0x00,0x00,0x00,
• 0x00,0x03,0xFF,0xE0,0x00,0x00,0x01,0xFF,0xF8,0x0C,0x00,0x0F,0x80,0x00,0x00,0x00,
• 0x00,0x07,0xFF,0xF0,0x00,0x00,0x03,0xFF,0xFC,0x04,0x00,0x12,0x06,0x00,0x00,0x00,
• 0x00,0x1F,0xFF,0xF8,0x00,0x00,0x07,0xFF,0xFE,0x00,0x00,0x02,0x73,0x00,0x00,0x00,
• 0x00,0x1F,0xFF,0xFC,0x00,0x00,0x07,0xFF,0xFF,0x00,0x00,0x07,0xE2,0x00,0x00,0x00,
• 0x00,0x6F,0xFF,0xFE,0x00,0x00,0x13,0xFF,0xFF,0x80,0x00,0x74,0x22,0x00,0x00,0x00,
• 0x00,0xF3,0xFF,0xFF,0x00,0x00,0x39,0xFF,0xFF,0xC0,0x00,0x06,0x26,0x00,0x00,0x00,
• 0x01,0xF9,0xFF,0xFF,0x80,0x00,0xFC,0xFF,0xFF,0xE0,0x00,0x0D,0xBC,0x00,0x00,0x00,
• 0x03,0xFC,0xFF,0xFF,0xC0,0x01,0xFE,0x7F,0xFF,0xF0,0x00,0x08,0xA0,0x00,0x00,0x00,
• 0x07,0xFE,0x7F,0xFF,0xF0,0x03,0xFF,0x3F,0xFF,0xF8,0x00,0x10,0x00,0x00,0x00,0x00,
• 0x0F,0xFF,0x3F,0xFF,0xF8,0x07,0xFF,0x81,0xFF,0xFC,0x00,0x00,0x00,0x00,0x00,0x00,
• 0x1F,0xFF,0x83,0xFF,0xFC,0x0F,0xFF,0xC6,0xFF,0xFE,0x00,0x00,0x00,0x00,0x00,0x00,
• 0x7F,0xFF,0xC1,0xFF,0xFE,0x1F,0xFF,0xCF,0x7F,0xFF,0x00,0x00,0x00,0x00,0x20,0x00,
• 0x7F,0xFF,0x81,0xFF,0xFE,0x1F,0xFF,0xDF,0x3F,0xFF,0x80,0x00,0x00,0x00,0x30,0x00,
• 0x7F,0xFF,0xC1,0xFF,0xFE,0x1F,0xFF,0xCF,0x7F,0xFF,0x80,0x00,0x00,0x00,0x3F,0x00,
• 0x3F,0xFF,0xC1,0xFF,0xFC,0xCF,0xFF,0xE6,0x7F,0xFF,0x00,0x00,0x00,0x03,0xE3,0x00,
• 0x1F,0xFF,0xFC,0xFF,0xF9,0xE7,0xFF,0xF0,0x3F,0xFE,0x00,0x00,0x00,0x02,0x10,0x00,
• 0x0F,0xFF,0xFE,0x7F,0xF7,0xF3,0xFF,0xFF,0x9F,0xF8,0x00,0x00,0x00,0x00,0xD0,0x00,
• 0x03,0xFF,0xFF,0x3F,0xEF,0xF9,0xFF,0xFF,0xCF,0xF0,0x00,0x00,0x00,0x00,0x10,0x00,
• 0x01,0xFF,0xFF,0x9F,0xDF,0xFC,0xFF,0xFF,0xE7,0xE0,0x00,0x00,0x00,0x00,0x90,0x00,
• 0x00,0xFF,0xFF,0xC7,0x3F,0xFF,0x3F,0xFF,0xF3,0xC0,0x00,0x00,0x00,0x00,0x3F,0x80,
• 0x00,0x7F,0xFF,0xF2,0x7F,0xFF,0x9F,0xFF,0xF9,0x80,0x00,0x00,0x00,0x07,0xA0,0x00,
• 0x00,0x3F,0xFF,0xF8,0xFF,0xFF,0xCF,0xFF,0xFC,0x00,0x00,0x00,0x00,0x00,0x28,0x00,
• 0x00,0x1F,0xFF,0xF9,0xFF,0xFF,0xC7,0xFF,0xFE,0x00,0x00,0x00,0x00,0x00,0x4C,0x00,
• 0x00,0x0F,0xFF,0xF3,0xFF,0xFF,0x93,0xFF,0xF8,0x00,0x00,0x00,0x00,0x01,0x86,0x00,
• 0x00,0x07,0xFF,0xE7,0xFF,0xFF,0x39,0xFF,0xF0,0x00,0x00,0x00,0x00,0x02,0x02,0x00,
• 0x00,0x03,0xFF,0xCF,0xFF,0xFC,0x7C,0xFF,0xE0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
• 0x00,0x01,0xFF,0x9F,0xFF,0xF9,0xFE,0x7F,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
• 0x00,0x00,0xFF,0x3F,0xFF,0xF3,0xFF,0x3F,0x80,0x00,0x00,0x04,0x60,0x00,0x00,0x00,
• 0x00,0x00,0x7E,0x7F,0xFF,0xE7,0xFF,0x9F,0x00,0x00,0x00,0x3E,0x60,0x00,0x00,0x00,
• 0x00,0x00,0x3D,0xFF,0xFE,0x0F,0xFF,0xCE,0x00,0x00,0x00,0x14,0x50,0x00,0x00,0x00,
• 0x00,0x00,0x03,0xFF,0xFC,0x1F,0xFF,0xE0,0x00,0x00,0x00,0x14,0x88,0x00,0x00,0x00,
• 0x00,0x00,0x03,0xFF,0xFC,0x0F,0xFF,0xF0,0x00,0x00,0x00,0x15,0x0C,0x00,0x00,0x00,
• 0x00,0x00,0x03,0xFF,0xFC,0x0F,0xFF,0xF0,0x00,0x00,0x00,0x14,0xF7,0x00,0x00,0x00,
• 0x00,0x00,0x01,0xFF,0xFC,0x1F,0xFF,0xE0,0x00,0x40,0x00,0x1E,0x00,0x00,0x00,0x00,
• 0x00,0x00,0x00,0xFF,0xF9,0xFF,0xFF,0xC0,0x00,0x60,0x00,0x32,0x48,0x00,0x00,0x00,
• 0x00,0x00,0x00,0x7F,0xF3,0xFF,0xFF,0x80,0x00,0x3E,0x00,0x0E,0xA8,0x00,0x00,0x00,
• 0x00,0x00,0x00,0x3F,0xE7,0xFF,0xFF,0x00,0x0F,0xC3,0x00,0x62,0x90,0x00,0x00,0x00,
• 0x00,0x00,0x00,0x1F,0xCF,0xFF,0xFC,0x00,0x08,0x00,0x00,0x04,0x10,0x00,0x00,0x00,
• 0x00,0x00,0x00,0x07,0x9F,0xFF,0xF8,0x00,0x09,0xF0,0x00,0x0F,0xFE,0x00,0x00,0x00,
• 0x00,0x00,0x00,0x03,0x3F,0xFF,0xF0,0x00,0x00,0x80,0x00,0x0D,0x00,0x00,0x00,0x00,
• 0x00,0x00,0x00,0x00,0xFF,0xFF,0xE0,0x00,0x01,0x30,0x00,0x00,0x00,0x00,0x00,0x00,
• 0x00,0x00,0x00,0x00,0xFF,0xFF,0xC0,0x00,0x03,0xD8,0x00,0x00,0x00,0x00,0x00,0x00,
• 0x00,0x00,0x00,0x00,0x7F,0xFF,0x80,0x00,0x00,0x70,0x00,0x00,0x00,0x00,0x00,0x00,
• 0x00,0x00,0x00,0x00,0x3F,0xFF,0x00,0x00,0x03,0xF0,0x00,0x00,0x00,0x00,0x00,0x00,
• 0x00,0x00,0x00,0x00,0x1F,0xFE,0x00,0x00,0x00,0x40,0x00,0x00,0x00,0x00,0x00,0x00,
• 0x00,0x00,0x00,0x00,0x0F,0xFC,0x00,0x00,0x0F,0xFE,0x00,0x00,0x00,0x00,0x00,0x00,
• 0x00,0x00,0x00,0x00,0x07,0xF8,0x00,0x00,0x08,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
• 0x00,0x00,0x00,0x00,0x03,0xF0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
• 0x00,0x00,0x00,0x00,0x01,0xE0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
• };
• void setup() {
•   Serial.begin(9600);
•   display.begin(SSD1306_SWITCHCAPVCC);
•         //oled显示logo
•         display.drawBitmap(0,0,pic,128,64,1);//
•         display.display();
•         display.clearDisplay();
•         delay(3000);
•   Serial.print("Initializing SD card...");
•   //sd卡启动
•   if (!SD.begin(chipSelect)) {
•     Serial.println("Card failed, or not present");
•     // don't do anything more:
•     return;
•   }
•   Serial.println("card initialized.");
• }
• uint32_t fileNum = 0;
• int i = 0;
• void loop() {
•         //循环读取sd卡上的图片，并显示到oled
•         for(fileNum=0; fileNum<=5355;fileNum++)
•         {
•                 //0000-5355.bmp 图片名字
•                 char filen[4] = {0};
•                 sprintf(filen, "%04d", fileNum);
• //                Serial.println("open file:");
• //                Serial.println(String(filen)+String(".bmp"));
•                 //打开图片
•                 File dataFile = SD.open(String(filen)+String(".bmp"));
•                 if (dataFile)
•                 {
•                         //读取图片，并把图片的数据存放到buff中
•                         i=0;
•                         while (dataFile.available())
•                         {
•                                 buff = dataFile.read();
•                                 i++;
•                         }
•                         dataFile.close();
•                         display.clearDisplay();
•                         //62个字节是图片文件中的头信息,62之后的是真实图片数据
•                         //data: 40+14+4*2 -> end
•                         display.drawBitmap(0,0,buff+62,128,64,1);//
•                         display.display();
•                 }
•                 // 图片打开失败
•                 else {
•                         Serial.println("error opening file");
•                 }
•   }
• }
• 
  

代码注释写的很清楚，就不再详细解释了。最后我们下载到零知标准板上，可以看看播放的效果（视频录制较大就不上传了，主要还是为了大家自己能动手）。

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