pwm_cycle_time: New module for output pins with dynamic cycle times

Remove support for changing the cycle time of pwm pins from the
output_pin module.  Use a new pwm_cycle_time module that supports
setting dynamic cycle times.  This simplifies the output_pin code and
low-level pin update code.

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

docs/Config_Changes.md

@@ -8,6 +8,11 @@ All dates in this document are approximate.
 
 ## Changes
 
+20240123: The output_pin SET_PIN CYCLE_TIME parameter has been
+removed. Use the new
+[pwm_cycle_time](Config_Reference.md#pwm_cycle_time) module if it is
+necessary to dynamically change a pwm pin's cycle time.
+
 20240123: The output_pin `maximum_mcu_duration` parameter is
 deprecated. Use a [pwm_tool config section](Config_Reference.md#pwm_tool)
 instead. The option will be removed in the near future.

docs/Config_Reference.md

@@ -3153,6 +3153,24 @@ pin:
 #   See the "output_pin" section for the definition of these parameters.
 ```
 
+### [pwm_cycle_time]
+
+Run-time configurable output pins with dynamic pwm cycle timing (one
+may define any number of sections with an "pwm_cycle_time" prefix).
+Pins configured here will be setup as output pins and one may modify
+them at run-time using "SET_PIN PIN=my_pin VALUE=.1 CYCLE_TIME=0.100"
+type extended [g-code commands](G-Codes.md#pwm_cycle_time).
+
+```
+[pwm_cycle_time my_pin]
+pin:
+#value:
+#shutdown_value:
+#cycle_time: 0.100
+#scale:
+#   See the "output_pin" section for information on these parameters.
+```
+
 ### [static_digital_output]
 
 Statically configured digital output pins (one may define any number

docs/G-Codes.md

@@ -839,17 +839,10 @@ The following command is available when an
 enabled.
 
 #### SET_PIN
-`SET_PIN PIN=config_name VALUE=<value> [CYCLE_TIME=<cycle_time>]`: Set
-the pin to the given 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.
-
-Some pins (currently only "soft PWM" pins) support setting an explicit
-cycle time using the CYCLE_TIME parameter (specified in seconds). Note
-that the CYCLE_TIME parameter is not stored between SET_PIN commands
-(any SET_PIN command without an explicit CYCLE_TIME parameter will use
-the `cycle_time` specified in the output_pin config section).
+`SET_PIN PIN=config_name VALUE=<value>`: Set the pin to the given
+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.
 
 ### [palette2]
 
@@ -978,6 +971,21 @@ babystepping), and subtract if from the probe's z_offset.  This acts
 to take a frequently used babystepping value, and "make it permanent".
 Requires a `SAVE_CONFIG` to take effect.
 
+### [pwm_cycle_time]
+
+The following command is available when a
+[pwm_cycle_time config section](Config_Reference.md#pwm_cycle_time)
+is enabled.
+
+#### SET_PIN
+`SET_PIN PIN=config_name VALUE=<value> [CYCLE_TIME=<cycle_time>]`:
+This command works similarly to [output_pin](#output_pin) SET_PIN
+commands. The command here supports setting an explicit cycle time
+using the CYCLE_TIME parameter (specified in seconds). Note that the
+CYCLE_TIME parameter is not stored between SET_PIN commands (any
+SET_PIN command without an explicit CYCLE_TIME parameter will use the
+`cycle_time` specified in the pwm_cycle_time config section).
+
 ### [query_adc]
 
 The query_adc module is automatically loaded.

docs/Status_Reference.md

@@ -374,6 +374,13 @@ is defined):
   template expansion, the PROBE (or similar) command must be run prior
   to the macro containing this reference.
 
+## pwm_cycle_time
+
+The following information is available in
+[pwm_cycle_time some_name](Config_Reference.md#pwm_cycle_time)
+objects:
+- `value`: The "value" of the pin, as set by a `SET_PIN` command.
+
 ## quad_gantry_level
 
 The following information is available in the `quad_gantry_level` object