Returns byte: The number of bytes returned from the slave device. False will continually send a restart after the request, keeping the connection active. True will send a stop message after the request, releasing the bus. Quantity: The number of bytes to request. Wire.requestFrom(address, quantity, stop) Parameters address: The 7-bit address of the device from which to request bytes. Syntax Wire.requestFrom(address, quantity) The bytes may then be retrieved with the available() and read() functions. Returns None requestFrom Description Used by the master to request bytes from a slave device. Wire.begin(address) Parameters address: The 7-bit slave address (optional) if not specified, join the bus as a master. This should normally be called only once. begin Description Initiate the Wire library and joins the I 2C bus as a master or slave. If(!display.This is an I 2C communications library that facilitates two-wire class communications with I 2C/TWI devices (also called "Wire Library"). SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally Static const unsigned char PROGMEM logo_bmp =
#define NUMFLAKES 10 // Number of snowflakes in the animation example #define OLED_RESET -1 // Reset pin # (or -1 if sharing Arduino reset pin)Īdafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET) Declaration for an SSD1306 display connected to I2C (SDA, SCL pins) #define SCREEN_HEIGHT 64 // OLED display height, in pixels #define SCREEN_WIDTH 128 // OLED display width, in pixels BSD license, check license.txt for more information All text above, and the splash screen below must be included in any redistribution.
Written by Limor Fried/Ladyada for Adafruit Industries, with contributions from the open source community. This example is for a 128x32 pixel display using I2C to communicate 3 pins are required to interface (two I2C and one reset).Īdafruit invests time and resources providing this open source code, please support Adafruit and open-source hardware by purchasing products from Adafruit! Pick one up today in the adafruit shop! -> This is an example for our Monochrome OLEDs based on SSD1306 drivers. The following code should load: /*********
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