SD card not working when using T5_V2.3.1_213]

[bruno1950]

Hi,
I just bought a Lilygo T5 V2.3.1.213 version GDEM0213B74 CH9102 and I was able to show on display data from I2C sensors (BME280 and SHT3x) and to get a timestamp from RTC DS3231. Deepsleep also works fine. However, I was not able to use the SD card, neither inserting it directly in the slot nor connected to an external SDcard reader ( MOSI IO15,MISO IO2, SCK IO14, CS IO13). The card is correctly mounted but I keep on getting an error "opening the file" or ""appending the file". Even using a vey simple sketch just to try if it's possible to write something on the SD card is unsuccesful. Since I think that Lilygo is a good brand I have to assume that it's my fault but I was not able to find my mistake. Could anyone tell me which code I have to use just to write data on SD card in order to use it as a datalogger ? Thx in advance

[lewisxhe]

Please copy your sketch here

[bruno1950]

Hi, sorry for the long delay in answering your request but I was in hospital for a programmed surgery that luckily went fine. Here you have the sketch that doesn't work for what attains the SD card since on the serial monitor I get the message "opening file failed" and "appending file failed" and no data are saved on the SD When I use this sketch ( clearly with needed modifications) wth the TFT Lilygo board it works just fine. Thx for your hekp Bruno #include <SD.h> #include <FS.h> #include <SPI.h> #include <Wire.h> #include <RTClib.h> // for the RTC RTC_DS3231 rtc; #include <GxFont_GFX.h> #include <GxEPD2.h> #include <GxGDEM0213B74/GxGDEM0213B74.h> // specific gor the Lilygo eink display model I have #include <Fonts/FreeMonoBold9pt7b.h> #include <GxIO/GxIO_SPI/GxIO_SPI.h> #include <GxIO/GxIO.h> #define SPI_MOSI 23 #define SPI_MISO -1 #define SPI_CLK 18 #define ELINK_SS 5 #define ELINK_BUSY 4 #define ELINK_RESET 16 #define ELINK_DC 17 #define SDCARD_SS 13 #define SDCARD_CLK 14 #define SDCARD_MOSI 15 #define SDCARD_MISO 2 GxIO_Class io(SPI, /*CS=5*/ ELINK_SS, /*DC=*/ ELINK_DC, /*RST=*/ ELINK_RESET); GxEPD_Class display(io, /*RST=*/ ELINK_RESET, /*BUSY=*/ ELINK_BUSY); SPIClass sdSPI(VSPI); bool sdOK = false; #include <Adafruit_Sensor.h> #include <Adafruit_BME280.h> #define SEALEVELPRESSURE_HPA (1013.25) Adafruit_BME280 bme; // I2C #include <SHT3x.h> SHT3x Sensor; // variables to store data from sensors ( float type because they are value with a decimal part) float TEMP; float HUM; float temp; float hum; String timeStamp; String Data; // variables to define sleep time; the first multiplies the value to get seconds from microseconds; the second says the sleep time in seconds (900 = 15 minutes) uint64_t uS_TO_S_FACTOR = 1000000; uint64_t TIME_TO_SLEEP = 900; //sleep for 15 minutes String dataMessage; void print_wakeup_reason(){ esp_sleep_wakeup_cause_t wakeup_reason; wakeup_reason = esp_sleep_get_wakeup_cause(); switch(wakeup_reason) { case ESP_SLEEP_WAKEUP_EXT0 : Serial.println("Wakeup caused by external signal using RTC_IO"); break; case ESP_SLEEP_WAKEUP_EXT1 : Serial.println("Wakeup caused by external signal using RTC_CNTL"); break; case ESP_SLEEP_WAKEUP_TIMER : Serial.println("Wakeup caused by timer"); break; case ESP_SLEEP_WAKEUP_TOUCHPAD : Serial.println("Wakeup caused by touchpad"); break; case ESP_SLEEP_WAKEUP_ULP : Serial.println("Wakeup caused by ULP program"); break; default : Serial.printf("Wakeup was not caused by deep sleep: %d\n",wakeup_reason); break; } } // setting a counter for data readings; it will increase every time data from sensors are collected RTC_DATA_ATTR int sensor_data = 0; #define sensor_data(temp,hum,TEMP,HUM); // to get time from RTC void gettimeStamp() { DateTime now = rtc.now(); char timeStamp[9]; sprintf(timeStamp, "%02i:%02i:%02i", now.hour(), now.minute(), now.second()); Serial.println(timeStamp); } // to print on serial monitor data from sensors void Read_TempHum() { Serial.print("Temp_BME280 = "); Serial.print(temp); Serial.println(" C"); Serial.print("Hum_BME280 = "); Serial.print(hum); Serial.println(" %"); Serial.print("Temp_SHT3x = "); Serial.print(TEMP); Serial.println(" C"); Serial.print("Hum_SHT3X = "); Serial.print(HUM); Serial.println(" %"); Serial.print(timeStamp); } //to display on Eink display data void displayReadings(){ DateTime now = rtc.now(); char timeStamp[9]; sprintf(timeStamp, "%02i:%02i:%02i", now.hour(), now.minute(), now.second()); display.setCursor(0,0); display.setTextColor(GxEPD_BLACK); display.setCursor(0,20); display.print("temp_BME = "); display.print(temp); display.println(" C"); display.print("temp_SHT = "); display.print(TEMP); display.println(" C"); display.print("hum_BME = "); display.print(hum); display.println(" %"); display.print("hum_SHT = "); display.print(HUM); display.println(" %"); display.setCursor(0,100); display.print(timeStamp); display.setCursor(100,100); display.print("Run n "); display.println(sensor_data); display.setCursor(0,115); display.print("Now sleep for 15 min"); display.update(); } // to save data on SDcard void logSDCard() { DateTime now = rtc.now(); char timeStamp[9]; sprintf(timeStamp, "%02i:%02i:%02i", now.hour(), now.minute(), now.second()); dataMessage = String(timeStamp) + "\r\n"; dataMessage = String(timeStamp) + "," + String(temp) + "," + String(hum)+ "," + String(TEMP) + "," + String(HUM) +"\r\n"; Serial.print("Save data: "); Serial.println(dataMessage); appendFile(SD, "/data.txt", dataMessage.c_str()); } // Write to the SD card 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(); } // Append data to the SD card 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 setup() { Serial.begin(115200); while(!Serial); delay(100); // checking the BME280 connections and initializing the sensor bool status; status = bme.begin(0x76); if (!status) { Serial.println("Could not find a valid BME280 sensor, check wiring!"); while (1); } //initializing SD card sdSPI.begin(SDCARD_CLK, SDCARD_MISO, SDCARD_MOSI, SDCARD_SS); if (!SD.begin(SDCARD_SS, sdSPI)) { sdOK = false; } else { sdOK = true; } Serial.println("SDcard initialized!!"); delay(500); File file = SD.open("/data.txt"); if(!file) { Serial.println("File doens't exist"); Serial.println("Creating file..."); writeFile(SD, "/data.txt", "Time, Temperature, Humidity,TEMP,HUM, \r\n"); } else { Serial.println("File already exists"); } file.close(); //initializing the SHT31 sensor Sensor.Begin(); Sensor.UpdateData(); TEMP = Sensor.GetTemperature(); HUM = Sensor.GetRelHumidity(); delay(100); // setup for the RTC if(! rtc.begin()) { Serial.println("Couldn't find RTC"); while (1); } else { // following line sets the RTC to the date & time this sketch was compiled rtc.adjust(DateTime(F(__DATE__), F(__TIME__))); } temp = bme.readTemperature(); hum = bme.readHumidity(); SPI.begin(SPI_CLK, SPI_MISO, SPI_MOSI, ELINK_SS); display.init(); // enable diagnostic output on Serial display.setRotation(1); display.fillScreen(GxEPD_WHITE); display.setTextColor(GxEPD_BLACK); display.setFont(&FreeMonoBold9pt7b); display.setCursor(0, 0); delay(1500); display.update(); Read_TempHum(); displayReadings(); logSDCard(); // increasing the counter for the next data readings sensor_data++; Serial.println("Sensor data logged successfully! Going to sleep"); // ESP32 going to sleep for the amount of time you decided esp_sleep_enable_timer_wakeup(TIME_TO_SLEEP * uS_TO_S_FACTOR); delay(5000); esp_deep_sleep_start(); delay(2000); esp_deep_sleep_start(); } void loop() {}

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Il 27/09/2023 14:20 CEST Lewis He ***@***.***> ha scritto: Please copy your sketch here — Reply to this email directly, view it on GitHub #46 (comment), or unsubscribe https://github.com/notifications/unsubscribe-auth/A5BIYK3VSGVXAB4ORXIHVV3X4QK2DANCNFSM6AAAAAA5IIF23I. You are receiving this because you authored the thread.Message ID: ***@***.***>

[lewisxhe]

It seems that there is no problem with the SD part. Has the SD card been formatted in FAT32 format? Is the capacity less than 32G? Have you replaced any other SD tests?

[bruno1950]

Hi, thx for your prompt feedback.
I tried with two different SDcard-adapters and with two different SD cards, one with 4 Gb and the other with 16 Gb, both formatted FAT32, but I still have the same error "Failed to open file for appending"
If I use codes devised to test SDcard (such as the SD_test.ino) I get the error message "Card Mount Failed" both when I insert the card in the slot of the board and if I use an external SD-card reader connected according to instructions.
At this point one question and one request.
Question: Have you tried to run my sketch ( or a similar one with data collected from an I2C sensor) with SD card on a Lilygo T5_V2.3.1_213 ? Were you successful ?
Request: Would you be so kind to send me a working code for using SD card as a data logger with this board ? I was not able to find any simple example of this use and I need to save on SDcard data collected from an I2C sensor.
Otherwise this board is of no use for me.
Thx for your help.

[lewisxhe]

Use the factory test file to test to see if it is normal @bruno1950
firmware

[bruno1950]

Hi,
I tried to use the file factory test as you suggested but I was not able to get a result even following your example.
For firmware I downloaded the [T5_V24_BW_GxGDEM0213B74.bin] because my board is this type. Then I downloaded from Espressif site the ESP32 FLASH DOWNLOAD TOOL but the available version is different from your example and I am blocked. I'm enclosing the pictutes of what I'm getting.
I've also tried to use your SD_test.ino but I got a lot of errors and it doesn't work.
Since I'm a newbie could you you please send me a code for SD card working for my Lilygo board ? or at least telling me where I can find it ?
I've seen that my issue was raised also last year by another user and seems NOT to have been solved (#33)

Thanks in advance for your help. The board would be perfect IF the SD card worked

[lewisxhe]

You have burned the wrong firmware, you should have burned
T5_V213_BW_GxGDEM0213B74.bin

You should use the compiled binary file for testing, first to rule out whether there is a hardware problem