define protocol
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README.md
56
README.md
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@ -43,4 +43,58 @@ This should work in such a way that the user logs into a web interface where the
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|--- |--------------- |
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| ~3 | IR-Trasmitter |
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| 4 | LED |
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|~11 | RC-Trasmitter |
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|~11 | RC-Trasmitter |
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# Protocol
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0,5 Byte Overhead
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0,5 Byte Command
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1 Byte Pin
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6 Byte Value
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----
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8 Byte
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## Description
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All messages start with the header, which consits of a nibble:
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```
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0101
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```
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Those four Bits are followed by one of ten commands which are also encoded in a nibble i.e.:
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```
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0000 - toggle Debug mode
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or combined
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0101 0000 - Ascii: P / Dec: 80
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```
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The server side of the protocol deals with the messages as Ascii encoded strings. This is followed by the second byte which encodes the pin that shall be used:
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```
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Pin ranges digital: 110 0001 / Ascii: a / DEC: 97 - 110 1110 / Ascii: n / DEC: 110
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Pin ranges analog: 110 1111 / Ascii: o / DEC: 111 - 111 0100 / Ascii: t / DEC: 116
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```
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Followed by six byte long value
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## Possible Commands
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80 - P - toggle Debug
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81 - Q - set pin mode
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82 - R - digital write
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83 - S - digital read
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84 - T - analog write
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85 - U - analog read
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86 - V - handle RC Decimal
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87 - W - handle RC TriState
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88 - X - handle IR send
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89 - Y - handle Ping
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## Special Command
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90 - Z - Beginn Communication
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## Possible fututre commands
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91 - [ -
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92 - \ -
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93 - ] -
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94 - ^ -
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95 - _ -
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