I rewrite the example for more compact output and made it run in cycle.
It works with the following issues:
-
listDir never works
-
After approximately 30 cycles, the output stops for about a minute, then cycles
continue but none of operation completed successfully. To restore normal operation power off/on needed.#include <Seeed_FS.h> #include "SD/Seeed_SD.h"int cycles;
void listDir(fs::FS &fs, const char *dirname, uint8_t levels) { Serial.printf("Listing directory: %s\n\r", dirname); File root = fs.open(dirname); if (!root) { Serial.println(" Failed to open directory"); return; } if (!root.isDirectory()) { Serial.println(" Not a directory"); return; } File file = root.openNextFile(); while (file) { if (file.isDirectory()) { Serial.printf(" DIR : %s\n\r",file.name()); if (levels) { listDir(fs, file.name(), levels - 1); } } else { Serial.printf(" FILE: %s SIZE: %s\n\r",file.name(), file.size()); } file = root.openNextFile(); } } void createDir(fs::FS& fs, const char* path) { Serial.printf("Creating Dir: %s", path); if (fs.mkdir(path)) { Serial.println(" Dir created"); } else { Serial.println(" mkdir failed"); } } void removeDir(fs::FS& fs, const char* path) { Serial.printf("Removing Dir: %s", path); if (fs.rmdir(path)) { Serial.println(" Dir removed"); } else { Serial.println(" rmdir failed"); } } void readFile(fs::FS& fs, const char* path) { Serial.printf("Reading File: %s ", path); File file = fs.open(path); if (!file) { Serial.println("Failed to open file for reading"); return; } Serial.print("Read from file: "); while (file.available()) { Serial.write(file.read()); } file.close(); } void writeFile(fs::FS& fs, const char* path, const char* message) { Serial.printf("Writing file: %s", path); File file = fs.open(path, FILE_WRITE); if (!file) { Serial.println(" Failed to open file for writing"); return; } if (file.print(message)) { Serial.println(" File written"); } else { Serial.println(" Write failed"); } file.close(); } void appendFile(fs::FS& fs, const char* path, const char* message) { Serial.printf("Appending to file: %s", path); File file = fs.open(path, FILE_APPEND); if (!file) { Serial.println(" Failed to open file for appending"); return; } if (file.print(message)) { Serial.println(" Message appended"); } else { Serial.println(" Append failed"); } file.close(); } void renameFile(fs::FS& fs, const char* path1, const char* path2) { Serial.printf("Renaming file: %s to %s ", path1, path2); if (fs.rename(path1, path2)) { Serial.println(" File renamed"); } else { Serial.println(" Rename failed"); } } void deleteFile(fs::FS& fs, const char* path) { Serial.printf("Deleting file: %s ", path); if (fs.remove(path)) { Serial.println(" File deleted"); } else { Serial.println(" Delete failed"); } } void testFileIO(fs::FS& fs, const char* path) { File file = fs.open(path); static uint8_t buf[512]; size_t len = 0; uint32_t start = micros(); uint32_t end = start; if (file) { len = file.size(); size_t flen = len; start = micros(); while (len) { size_t toRead = len; if (toRead > 512) { toRead = 512; } file.read(buf, toRead); len -= toRead; } end = micros() - start; Serial.printf("%d bytes read for %d us\n\r", flen, end); file.close(); } else { Serial.println("Failed to open file for reading"); } } void setup() { Serial.begin(115200);
// pinMode(5, OUTPUT); // Do not know what for
// digitalWrite(5, HIGH);
while (!Serial) {};
while (!SD.begin(SDCARD_SS_PIN, SDCARD_SPI, 4000000UL)) {
Serial.println("Card Mount Failed");
delay(1000);
}
}
void loop() {
test();
cycles++;
Serial.printf("Cycles %d\n\r", cycles);
delay(1000);
}
void test() {
uint8_t cardType = SD.cardType();
Serial.printf("Card type: %d\n\r", cardType);
if (cardType == CARD_NONE) {
Serial.println("No SD card attached");
return;
}
uint64_t cardSize = SD.cardSize() / (1024 * 1024);
Serial.print("SD Card Size: ");
Serial.print((uint32_t)cardSize);
Serial.println("MB");
listDir(SD, "/", 0);
createDir(SD, "/mydir"); // Dir created OK
//listDir(SD, "/", 0); // Not a directory
removeDir(SD, "/mydir");
//listDir(SD, "/", 2);
writeFile(SD, "/hello.txt", "Hello ");
appendFile(SD, "/hello.txt", "World!\n");
readFile(SD, "/hello.txt");
deleteFile(SD, "/foo.txt");
renameFile(SD, "/hello.txt", "/foo.txt");
readFile(SD, "/foo.txt");
testFileIO(SD, "/foo.txt");
uint32_t totalBytes = SD.totalBytes();
Serial.printf("Total space: %d MB ", totalBytes / (1024 * 1024));
uint32_t usedBytes = SD.usedBytes();
Serial.printf("Used space: %d MB\n\r", usedBytes / (1024 * 1024));
}
Output:
Card type: 3
SD Card Size: 15200MB
Listing directory: /
Not a directory
Creating Dir: /mydir Dir created
Removing Dir: /mydir Dir removed
Writing file: /hello.txt File written
0
Appending to file: /hello.txt Message appended
0
Reading File: /hello.txt Read from file: Hello World!
0
Deleting file: /foo.txt File deleted
Renaming file: /hello.txt to /foo.txt File renamed
Reading File: /foo.txt Read from file: Hello World!
0
13 bytes read for 1383 us
0
Total space: 2898 MB Used space: 2 MB