Reference for Wiring version 1.0 Build 0100+ If you have a previous version, use the reference included with your software. If see any errors or have any comments, let us know.
| Class | Wire |
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|---|---|---|---|---|---|
| Name | onRequest() |
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| Examples | #include "Wire.h" void setup() { // join i2c bus with address #2 Wire.begin(2); // register event Wire.onRequest(requestEvent); } void loop() { delay(100); } // function that executes whenever data is requested by master // this function is registered as an event, see setup() void requestEvent() { // respond with message of 6 bytes // as expected by master Wire.write("hello "); } |
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| Description | The onRequest() method set the function that executes whenever data is requested by a master from this device. Every time a master reads data from this device the specified function is executed. | ||||
| Syntax | Wire.onRequest(function) |
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| Parameters |
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| Returns | None | ||||
| Usage | Application |
