/* * Connect the SD card to the following pins: * * SD Card | ESP32 * D2 - * D3 SS * CMD MOSI * VSS GND * VDD 3.3V * CLK SCK * VSS GND * D0 MISO * D1 - */ #include "FS.h" #include "SD.h" #include "SPI.h" #include "stdio.h" void listDir(fs::FS &fs, const char * dirname, uint8_t levels){ Serial.printf("Listing directory: %s\n", 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.print(" DIR : "); Serial.println(file.name()); if(levels){ listDir(fs, file.path(), levels -1); } } else { Serial.print(" FILE: "); Serial.print(file.name()); Serial.print(" SIZE: "); Serial.println(file.size()); } file = root.openNextFile(); } } void createDir(fs::FS &fs, const char * path){ Serial.printf("Creating Dir: %s\n", 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\n", 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\n", 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\n", 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\n", 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\n", 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\n", 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 = millis(); uint32_t end = start; if(file){ len = file.size(); size_t flen = len; start = millis(); while(len){ size_t toRead = len; if(toRead > 512){ toRead = 512; } file.read(buf, toRead); len -= toRead; } end = millis() - start; Serial.printf("%u bytes read for %u ms\n", flen, end); file.close(); } else { Serial.println("Failed to open file for reading"); } file = fs.open(path, FILE_WRITE); if(!file){ Serial.println("Failed to open file for writing"); return; } size_t i; start = millis(); for(i=0; i<2048; i++){ file.write(buf, 512); } end = millis() - start; Serial.printf("%u bytes written for %u ms\n", 2048 * 512, end); file.close(); } const int DOOR_SENSOR_PIN = 25; int lastDoorState, currentDoorState, period = 1000, timesOpened = 0, seconds = 0, minutes = 0, hours = 0, timeSinceOpened = 0; int longestTime = 0, shortestTime = 10000000; unsigned long timeoff = 0; void setup(){ Serial.begin(115200); pinMode(DOOR_SENSOR_PIN, INPUT_PULLUP); if(!SD.begin()){ Serial.println("Card Mount Failed"); return; } uint8_t cardType = SD.cardType(); if(cardType == CARD_NONE){ Serial.println("No SD card attached"); return; } Serial.print("SD Card Type: "); if(cardType == CARD_MMC){ Serial.println("MMC"); } else if(cardType == CARD_SD){ Serial.println("SDSC"); } else if(cardType == CARD_SDHC){ Serial.println("SDHC"); } else { Serial.println("UNKNOWN"); } uint64_t cardSize = SD.cardSize() / (1024 * 1024); Serial.printf("SD Card Size: %lluMB\n", cardSize); writeFile(SD, "/sensor.txt", ""); writeFile(SD, "/hourly.txt", ""); /* listDir(SD, "/", 0); createDir(SD, "/mydir"); listDir(SD, "/", 0); 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, "/test.txt"); */ Serial.printf("Total space: %lluMB\n", SD.totalBytes() / (1024 * 1024)); Serial.printf("Used space: %lluMB\n", SD.usedBytes() / (1024 * 1024)); } void loop(){ lastDoorState = currentDoorState; currentDoorState = digitalRead(DOOR_SENSOR_PIN); timeoff = millis(); seconds++; timeSinceOpened++; if (lastDoorState == LOW && currentDoorState == HIGH) { Serial.print("The door is opening!\n"); appendFile(SD, "/sensor.txt", "Open\n"); timesOpened++; char numbers[80]; sprintf(numbers, "The time since opened: %d\n", timeSinceOpened); appendFile(SD, "/sensor.txt", numbers); if (timeSinceOpened > longestTime) { longestTime = timeSinceOpened; } if (timeSinceOpened < shortestTime) { shortestTime = timeSinceOpened; } timeSinceOpened = 0; } else if (lastDoorState == HIGH && currentDoorState == LOW) { Serial.println("The door is closing!"); appendFile(SD, "/sensor.txt", "Closed\n"); } if (seconds == 60) { minutes++; seconds = 0; } if (minutes == 60) { hours++; minutes = 0; timesOpened = 0; char hour[160]; sprintf(hour, "Times opened during hour %d: %d\nLongest time opened: %d\nShortest time opened: %d\n", hours, timesOpened, longestTime, shortestTime); appendFile(SD, "/hourly.txt", hour); } while (millis() <= timeoff + period){} }