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wiki:v2:protocol_reference [2018/10/10 17:31]
pixycam
wiki:v2:protocol_reference [2018/10/10 19:33]
pixycam
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-It's not hugely important that you understand little-endian and two's complement representations -- 95% of all processors use little-endian and two's complement. ​ So you basically read the bytes into memory and tell the processor there'​s an integer there and it will happily interpret it correctly. ​ But it's good to know, and required information for the protocol to work correctly.+It's not hugely important that you understand little-endian and two's complement representations -- 95% of all processors use little-endian and two's complement. ​ So you basically read the bytes into memory and tell the processor there'​s an integer thereand it will happily interpret it correctly. ​ But it's good to know, and required information for the protocol to work correctly.
  
  
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 |3 |Length of payload |7 | |3 |Length of payload |7 |
 |4 - 5 |16-bit checksum | sum of payload bytes | |4 - 5 |16-bit checksum | sum of payload bytes |
-|6 - 7 |Hardware ​version | (varies) |+|6 - 7 |16-bit hardware ​version | (varies) |
 |8 |Firmware version (major) | (varies) | |8 |Firmware version (major) | (varies) |
 |9 |Firmware version (minor) | (varies) | |9 |Firmware version (minor) | (varies) |
-|10 - 11 |Firmware ​build | (varies) |+|10 - 11 | 16-bit firmware ​build | (varies) |
 |12 |Firmware type (human readable string) | (varies) | |12 |Firmware type (human readable string) | (varies) |
  
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 |3 |Length of payload |2 | |3 |Length of payload |2 |
 |4 - 5 |16-bit checksum | sum of payload bytes | |4 - 5 |16-bit checksum | sum of payload bytes |
-|6 - 7 |Frame width | 0 - 511  | +|6 - 7 |16-bit frame width | 0 - 511  | 
-|8 - 9 |Frame height | 0 - 511  |+|8 - 9 |16-bit frame height | 0 - 511  |
 ==== setCameraBrightness(brightness) ==== ==== setCameraBrightness(brightness) ====
  
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 |3 |Length of payload |4 | |3 |Length of payload |4 |
 |4 - 5 |16-bit checksum | sum of payload bytes | |4 - 5 |16-bit checksum | sum of payload bytes |
-|6 - 9 |Result ​ |0 (???) |+|6 - 9 |32-bit result ​ |result value |
 ==== setServos(s0,​ s1) ==== ==== setServos(s0,​ s1) ====
  
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 |2 |Type of packet |18 | |2 |Type of packet |18 |
 |3 |Length of payload |4 | |3 |Length of payload |4 |
-|4 - 5 |s0 - pan servo value |0 - 511 | +|4 - 5 |16-bit ​s0 - pan servo value |0 - 511 | 
-|6 - 7 |s1 - tilt servo value |0 - 511 |+|6 - 7 |16-bit ​s1 - tilt servo value |0 - 511 |
  
 === Response: === === Response: ===
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 |3 |Length of payload |4 | |3 |Length of payload |4 |
 |4 - 5 |16-bit checksum | sum of payload bytes | |4 - 5 |16-bit checksum | sum of payload bytes |
-|6 - 9 |Result |0 (???) |+|6 - 9 |32-bit result/​acknowledge ​|result value |
 ==== setLED(r, g, b) ==== ==== setLED(r, g, b) ====
  
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 |3 |Length of payload |4 | |3 |Length of payload |4 |
 |4 - 5 |16-bit checksum | sum of payload bytes | |4 - 5 |16-bit checksum | sum of payload bytes |
-|6 - 9 |Result |0 (???) |+|6 - 9 |32-bit result/​acknowledge ​result value |
 ==== setLamp(upper,​ lower) ==== ==== setLamp(upper,​ lower) ====
  
Line 152: Line 152:
 |3 |Length of payload |4 | |3 |Length of payload |4 |
 |4 - 5 |16-bit checksum | sum of payload bytes | |4 - 5 |16-bit checksum | sum of payload bytes |
-|6 - 9 |Result |0 (???) |+|6 - 9 |32-bit result/​acknowledge ​result value |
 ==== getFPS() ==== ==== getFPS() ====
  
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 |3 |Length of payload |4 | |3 |Length of payload |4 |
 |4 - 5 |16-bit checksum | sum of payload bytes | |4 - 5 |16-bit checksum | sum of payload bytes |
-|6 - 9 |Result |0 (???) |+|6 - 9 |32-bit result ​frames-per-second ​|
  
 {{page>​wiki:​v2:​ccc-packets&​noindent}} {{page>​wiki:​v2:​ccc-packets&​noindent}}
 {{page>​wiki:​v2:​line-packets&​noindent}} {{page>​wiki:​v2:​line-packets&​noindent}}
 {{page>​wiki:​v2:​video-packets&​noindent}} {{page>​wiki:​v2:​video-packets&​noindent}}
wiki/v2/protocol_reference.txt · Last modified: 2020/05/29 00:02 by pixycam