102 lines
2.6 KiB
C++
102 lines
2.6 KiB
C++
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/************************ SD Card Code ************************/
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// As per: https://github.com/espressif/arduino-esp32/tree/master/libraries/SD/examples/SD_Test
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void listDir(fs::FS &fs, const char * dirname, uint8_t levels, bool add_to_gif_list = false){
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Serial.printf("Listing directory: %s\n", dirname);
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File root = fs.open(dirname);
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if(!root){
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Serial.println("Failed to open directory");
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return;
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}
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if(!root.isDirectory()){
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Serial.println("Not a directory");
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return;
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}
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File file = root.openNextFile();
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while(file){
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if(file.isDirectory()){
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Serial.print(" DIR : ");
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Serial.println(file.name());
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if(levels){
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listDir(fs, file.path(), levels -1, false);
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}
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} else {
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Serial.print(" FILE: ");
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Serial.print(file.name());
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Serial.print(" SIZE: ");
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Serial.println(file.size());
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if (add_to_gif_list && levels == 0)
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{
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GifFiles.push_back( std::string(dirname) + file.name() );
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Serial.println("Adding to gif list:" + String(dirname) +"/" + file.name());
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totalFiles++;
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}
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}
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file = root.openNextFile();
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}
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file.close();
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}
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void readFile(fs::FS &fs, const char * path){
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Serial.printf("Reading file: %s\n", path);
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File file = fs.open(path);
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if(!file){
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Serial.println("Failed to open file for reading");
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return;
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}
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Serial.print("Read from file: ");
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while(file.available()){
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Serial.write(file.read());
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}
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file.close();
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}
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void testFileIO(fs::FS &fs, const char * path){
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File file = fs.open(path);
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static uint8_t buf[512];
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size_t len = 0;
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uint32_t start = millis();
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uint32_t end = start;
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if(file){
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len = file.size();
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size_t flen = len;
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start = millis();
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while(len){
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size_t toRead = len;
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if(toRead > 512){
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toRead = 512;
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}
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file.read(buf, toRead);
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len -= toRead;
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}
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end = millis() - start;
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Serial.printf("%u bytes read for %u ms\n", flen, end);
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file.close();
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} else {
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Serial.println("Failed to open file for reading");
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}
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file = fs.open(path, FILE_WRITE);
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if(!file){
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Serial.println("Failed to open file for writing");
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return;
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}
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size_t i;
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start = millis();
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for(i=0; i<2048; i++){
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file.write(buf, 512);
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}
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end = millis() - start;
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Serial.printf("%u bytes written for %u ms\n", 2048 * 512, end);
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file.close();
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}
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