Difference between revisions of "I2C communication between PICs"
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Below is a simple circuit diagram showing the master PIC with 2 close button switches. Note that pin 18 (RC3) is not brought out to the circuit board, but a wire can be soldered next to the PIC itself. |
Below is a simple circuit diagram showing the master PIC with 2 close button switches. Note that pin 18 (RC3) is not brought out to the circuit board, but a wire can be soldered next to the PIC itself. |
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[[image:I2C Circuit Diagram.jpg|center|600px]] |
[[image:I2C Circuit Diagram.jpg|center|600px]] |
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Here is an example of how to wire this. |
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[[image:I2C Wiring Image.jpg|center|600px]] |
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== Code == |
== Code == |
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Revision as of 19:45, 2 February 2008
Original Assignment
Microcontrollers commonly talk to each other using protocols such as RS-232, SPI (for "serial peripheral interface"), I2C (or I^2C, "I squared C," for inter-integrated circuit), CAN bus, or other. This project is to demonstrate bidirectional I2C communication between two PICs. A demonstration might have the value of an analog input (potentiometer) at one PIC displayed as a "light bar" on the LEDs of the other PIC board, and simultaneously vice-versa.
Overview
Circuit
Below is a simple circuit diagram showing the master PIC with 2 close button switches. Note that pin 18 (RC3) is not brought out to the circuit board, but a wire can be soldered next to the PIC itself.
Here is an example of how to wire this.
