Read & Write to SDCard in order ?

[cucugwh]

Hello.
I use Freematics OBD-II Adapter (GPS Capable) with BLE. (Firmware v2 : data logger)
I am searching to solution about to read from SDCard to smart device, then write OBD data to SDCard, in order .
Does anyone have good idea or solution?

[stanley]

What do you mean by "read from SDCard to smart device"?

[cucugwh]

Sorry. My Mistake. My English is not well.
I wanted to do that read to log data in sdcard and send to smart device.
anyway, I fined the solution that I want to do.
thank you.

[BoxOfSnoo]

Sorry. My Mistake. My English is not well.
I wanted to do that read to log data in sdcard and send to smart device.
anyway, I fined the solution that I want to do.
thank you.

Can you share your solution?

[cucugwh]

This code is sample.

if recvByte is 0x01, then do "CustomAction1"
CustomAction1 open file, send "SD File context" to target device(iOS, Android) use BLE

Sorry, My Answer is too late.

Code: Select all

void loop()
{
    byte recvByte;
    while(1){
    if(SerialBLE.available())
    {
      recvByte = SerialBLE.read();
    }
    
    if(recvByte == 0x01){

      //Custom Action1
      delay(100);
      
       sdfile = SD.open("Path of Your File ex:csv", FILE_READ);
        if (!sdfile) {
            return;
        }
        else
        {
          SerialBLE.print("datafile exist.");
              while (sdfile.available()) {
                SerialBLE.write(sdfile.read());
              }
          
          sdfile.close();     
        }
        recvByte = 0x03;
    }
    
    if(recvByte == 0x02){
      delay(100);
     
      //Custom Action 2

    }
  }
}

[Marek]

Does it mean the Freematics OBD-2 adapter is capable of dumping info onto sdcard and then read the file and send it via BT to a connected BT device?

[Dhruvee]

Your thread not clear me so much. If you know more about sd card must visit my website.