Transcription of AN1076 - Microchip Technology
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AN1076 - Microchip Technology
2007 Microchip Technology 1AN1076 INTRODUCTION DMX512 is a communication protocol used in most pro-fessional theater lighting components such as dim-mers, scanners, moving lights, strobes, etc. Thisapplication note presents a solution to transmit andreceive the DMX512 communication protocol that canbe implemented using any PIC microcontroller offer-ing a Universal Asynchronous Receiver Transmitter(UART) module. In particular, the PIC18F24J10, a gen-eral purpose device, was used in the code examplesprovided with this application note. It provides 1024bytes of data memory, which allows the demonstrationcode to store the data for the entire 512 channel buffer(although this is not required for the typical application).
© 2007 Microchip Technology Inc. DS01076A-page 5 AN1076 SENDING THE DIMMING DATA The dimming data is 8-bits wide, where ‘0’ represents a light off and ‘255’ represents full intensity.
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