output_pin: Support setting a TEMPLATE on SET_PIN commands

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

1 files changed, 14 insertions, 0 deletions

diff --git a/docs/G-Codes.md b/docs/G-Codes.md
index 2444c53b..f855f364 100644
--- a/docs/G-Codes.md
+++ b/docs/G-Codes.md
@@ -857,6 +857,20 @@ output `VALUE`. VALUE should be 0 or 1 for "digital" output pins. For
 PWM pins, set to a value between 0.0 and 1.0, or between 0.0 and
 `scale` if a scale is configured in the output_pin config section.
 
+`SET_PIN PIN=config_name TEMPLATE=<template_name> [<param_x>=<literal>]`:
+If `TEMPLATE` is specified then it assigns a
+[display_template](Config_Reference.md#display_template) to the given
+pin. For example, if one defined a `[display_template
+my_pin_template]` config section then one could assign
+`TEMPLATE=my_pin_template` here. The display_template should produce a
+string containing a floating point number with the desired value. The
+template will be continuously evaluated and the pin will be
+automatically set to the resulting value. One may set display_template
+parameters to use during template evaluation (parameters will be
+parsed as Python literals). If TEMPLATE is an empty string then this
+command will clear any previous template assigned to the pin (one can
+then use `SET_PIN` commands to manage the values directly).
+
 ### [palette2]
 
 The following commands are available when the