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--- wiki:v2:line_api [2018/07/03 19:49]
pixycam [Line tracking API]
+++ wiki:v2:line_api [2018/10/10 20:05] (current)
jfrench added protocol reference link
@@ Line 9: / Line 9: @@
 </code>
-The functions in this API will always return errors unless the [[wiki:v2:line_tracking|line_tracking]] program is being run.
+See also the [[wiki:v2:general_api|Pixy2 General API]], [[wiki:v2:ccc_api|Color Connected Components API]], and [[wiki:v2:video_api|Video API]] for other functionality.
-A good program to run to familiarize yourself the Line Tracking algorithm is the *line\_hello\_world* example found in the Arduino library.  This [[wiki:v2:line_quickstart|quickstart guide]] will get you off to a good start.
+For a byte-level reference to the protocol, check out the new [[wiki:v2:protocol_reference|Pixy2 Serial Protocol - Packet Reference]]
+Firmware versions 3.0.11 and greater will automatically switch to the [[wiki:v2:line_tracking|line_tracking]] program when making requests through the line tracking API.
+A good program to run to familiarize yourself the Line Tracking algorithm is the *line\_hello\_world* example found in the Arduino Pixy2 library.  This [[wiki:v2:line_quickstart|quickstart guide]] will get you off to a good start.
 ==== Whoa, this looks complicated ====
@@ Line 128: / Line 134: @@
 == uint8_t m_x1 ==
-This variable contains the x location of the head of the Vector or line.  The value ranges between 0 and _frameWidth_ (79).
+This variable contains the x location of the head (arrow end) of the Vector or line.  The value ranges between 0 and _frameWidth_ (79).
 == uint8_t m_y1 ==
-This variable contains the y location of the head of the Vector or line.  The value ranges between 0 and _frameWidth_ (52).
+This variable contains the y location of the head (arrow end) of the Vector or line.  The value ranges between 0 and _frameWidth_ (52).

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