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>

1 files changed, 19 insertions, 11 deletions

diff --git a/docs/G-Codes.md b/docs/G-Codes.md
index 8c70609f..92cb7660 100644
--- a/docs/G-Codes.md
+++ b/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.