Controlling the Multiple Product
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| Header (5 bytes) |
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| Payload (4 bytes) |
| Checksum | ||||
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| Prefix code | Prefix code | Set | Payload | # of |
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command | payload | Command | data #0 | data #1 | data #2 | CS #0 | |||||
#0 | #1 | ID | Type | ||||||||
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Ack Set Wide | 0xCC | 0x55 |
| 0 | 4 | 0xC2 | 0xE0 : OK | reserved (0xFF) | reserved | Header XOR | |
Mode |
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| 0xE1 : NG |
| (0xFF) | Payload | |
Read Wide | 0xCC | 0x33 |
| 1 | 4 | 0xC2 | reserved (0x00) | reserved (0x00) | reserved | Header XOR | |
Mode |
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| (0x00) | Payload | |
Ack Read | 0xCC | 0x55 |
| 1 | 4 | 0xC2 | 0xE0 : OK | 0 : Normal/Full | reserved | Header XOR | |
Wide Mode |
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| 0xE1 : NG | 1 : Wide | (0x00) | Payload | |
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| 2 : Zoom |
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| 3 : Stretch/ |
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| Panoramic |
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Set Video | 0xCC | 0x33 |
| 0 | 4 | 0xCC | 0 : 60Hz | reserved (0xFF) | reserved | Header XOR | |
System |
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| 1 : 50Hz |
| (0xFF) | Payload | |
Ack Set Video | 0xCC | 0x55 |
| 0 | 4 | 0xCC | 0xE0 : OK | reserved (0xFF) | reserved | Header XOR | |
System |
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| 0xE1 : NG |
| (0xFF) | Payload | |
Read Video | 0xCC | 0x33 |
| 1 | 4 | 0xCC | reserved (0x00) | reserved (0x00) | reserved | Header XOR | |
System |
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| (0x00) | Payload | |
Ack Read | 0xCC | 0x55 |
| 1 | 4 | 0xCC | 0xE0 : OK | 0 : 60Hz | reserved | Header XOR | |
Video System |
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| 0xE1 : NG | 1 : 50Hz | (0xFF) | Payload | |
RS232C CheckSum |
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| Header (5 bytes) |
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| Payload (4 bytes) |
| Checksum | |||
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| (1byte) | |||||
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command | Prefix code | Prefix code | Set | Payload | # of payload | Command | data #0 | data #1 | data #2 | CS #0 |
| #0 | #1 | ID | Type | bytes |
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Set Power | 0xCC | 0x33 |
| 0 | 4 | 0x10 | "0 : 0ff | reserved | reserved | Header XOR |
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| 1 : On" | (0x00) | (0x00) | Payload |
We can make CheckSum with Header (5 bytes) and Payload(4 bytes).
(Prefix code#0) XOR (Prefix code#1) XOR (Set ID) XOR (Command Payload Type) XOR (# of Payload bytes) XOR (Command) XOR (data #0) XOR (data #1) XOR (data#2) = CheckSum
For example:
(0xCC) XOR (0x33) XOR (0x01 = Set ID) XOR (0x00) XOR (0x04) XOR (0x10) XOR (0x01 = ON) XOR (0x00) XOR (0x00) = 0xEB
A14