If ( str1.equalsIgnoreCase(".bmp") ) // if the file has '. String str1 = String(entry.name()).substring( nameSize - 4 ) // save the last 4 characters (file extension) Pro Micro Pin 10 -> SD Module CS Pro Micro Pin 16 -> SD Module MOSI Pro Micro Pin 14 -> SD Module MISO Pro Micro Pin 15 -> SD Module SCK. Uint8_t nameSize = String(entry.name()).length() // get file name size PrintDirectory(root, 0) // print all files names and sizesįile entry = root.openNextFile() // open file initialize Adafruit ST7735 TFT libraryĪdafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_RST) įile root = SD.open("/") // open SD card main root SD.mkdir (filename) Remove a directory from the SD card. SD.remove (filename) Create a directory on the SD card. #define TFT_RST 5 // reset line (optional, pass -1 if not used) Close the file and ensure that any data written to it is physically saved to the SD card. through programming, the data can easily be read and wrote into SD Card by using the Arduino or other microcontrollers. #include // include Adafruit ST7735 display library This module uses the standard SPI interface for communication, which involve SPI buses, MISO, MOSI, SCK, and a CS signal pin. If you bought an SD card, chances are it's already pre-formatted with a FAT filesystem. #include // include Adafruit graphics library For the Arduino library we'll be discussing, and nearly every other SD library, the card must be formatted FAT16 or FAT32. Using the 1.44″ TFT color Display with Arduino.Ĭode for displaying Bitmap images from SD card on TFT display.However, by itself, an Arduino board is not able to use SD cards. You can also make reference to my previous post on how to use the 1.44″ TFT display. An SD (Secure Digital) card is ideal for both data storage as well as for data transfer. I have included a button on pin 2 which is going to be used as a switch for changing the images displayed on the TFT screen. Make sure you don’t change the order of connection for the SCK, MOSI and MISO pins because they are declared in that order within the SD.h library. The SPI pins depend on the type of Arduino used but in this case we are using the UNO whose SPI pins are from pin 10 to 12. The SD card module uses the SPI communication protocol and is therefore connected to the Arduino hardware SPI pins. I would appreciate your support in this way. I earn a commission as an Amazon Associate for qualifying purchases. Most new SD cards come when already pre-formatted with a FAT file system but it’s always good to do it yourself to be certain.Ī good recommendation where you can buy this SD Card module and TFT display is the link below:ĭisclosure: These are affiliate links. Using the Micro SD Card Module with Arduinoīefore inserting the micro SD card into the module and hooking it up to the Arduino, make sure it is properly formatted and is using the FAT16 or FAT32 file system.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |