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define protocol

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Shannon Sterz 2016-01-18 22:30:20 +01:00
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commit ae943a451b
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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
|--- |--------------- |
| ~3 | IR-Trasmitter |
| 4 | LED |
|~11 | RC-Trasmitter |
|~11 | RC-Trasmitter |
# Protocol
0,5 Byte Overhead
0,5 Byte Command
1 Byte Pin
6 Byte Value
----
8 Byte
## Description
All messages start with the header, which consits of a nibble:
```
0101
```
Those four Bits are followed by one of ten commands which are also encoded in a nibble i.e.:
```
0000 - toggle Debug mode
or combined
0101 0000 - Ascii: P / Dec: 80
```
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:
```
Pin ranges digital: 110 0001 / Ascii: a / DEC: 97 - 110 1110 / Ascii: n / DEC: 110
Pin ranges analog: 110 1111 / Ascii: o / DEC: 111 - 111 0100 / Ascii: t / DEC: 116
```
Followed by six byte long value
## Possible Commands
80 - P - toggle Debug
81 - Q - set pin mode
82 - R - digital write
83 - S - digital read
84 - T - analog write
85 - U - analog read
86 - V - handle RC Decimal
87 - W - handle RC TriState
88 - X - handle IR send
89 - Y - handle Ping
## Special Command
90 - Z - Beginn Communication
## Possible fututre commands
91 - [ -
92 - \ -
93 - ] -
94 - ^ -
95 - _ -