Difference between revisions of "NEC IR Remote Control Interface with 8051"
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=NEC Protocol= | =NEC Protocol= | ||
| − | + | NEC IR protocol encodes the keys using a 32bit frame format as shown below. Each bit is transmitted using the pulse distance as shown below. | |
| + | <b>Logical '0':</b> A 562.5µs pulse burst followed by a 562.5µs space, with a total transmit time of 1.125ms | ||
| + | <b>Logical '0':</b> A 562.5µs pulse burst followed by a 1.6875ms space, with a total transmit time of 2.25ms | ||
| + | =Downloads= | ||
[[File:Schematic 8051 Interfacing Zigbee.JPG|680px]] | [[File:Schematic 8051 Interfacing Zigbee.JPG|680px]] | ||
<span style="color:red">'''Code and Explanation will be updated soon..'''</span> | <span style="color:red">'''Code and Explanation will be updated soon..'''</span> | ||
Revision as of 17:20, 29 July 2016
IR Remote Controllers and receivers follow standard protocols for sending and receiving the data. Some of the standard protocols are NEC , JVC , SIRC (Sony Infrared Remote Control) etc. We will be discussing only the NEC protocol. After understanding the frame format of IR Remote, We will be interfacing a IR receiver with 8051 and decode the key pressed.
NEC Protocol
NEC IR protocol encodes the keys using a 32bit frame format as shown below. Each bit is transmitted using the pulse distance as shown below. Logical '0': A 562.5µs pulse burst followed by a 562.5µs space, with a total transmit time of 1.125ms Logical '0': A 562.5µs pulse burst followed by a 1.6875ms space, with a total transmit time of 2.25ms
Downloads
Code and Explanation will be updated soon..