Reference for Wiring version 0027+. If you have a previous version, use the reference included with your software. If you see any errors or have any comments, let us know.
Class | Wire |
||||||
---|---|---|---|---|---|---|---|
Name | requestFrom() |
||||||
Examples | #include "Wire.h" void setup() { // join i2c bus (address optional for master) Wire.begin(); // start serial for output Serial.begin(9600); } void loop() { // request 6 bytes from slave device #2 Wire.requestFrom(2, 6); // slave may send less than requested while(Wire.available()) { // receive a byte as character char c = Wire.receive(); Serial.print(c); // print the character } delay(500); } |
||||||
Description | The requestFrom() method start read a specified number of bytes from the device specified with a given address. | ||||||
Syntax | Wire.requestFrom(address, quantity) |
||||||
Parameters |
|
||||||
Returns | int: The number of bytes read. | ||||||
Usage | Application |