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pwmcmds: Export the maximum PWM value

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Instead of assuming the maximum PWM value is 255, export a constant
from the firmware to the host with the maximum value.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2017-05-07 17:33:45 -04:00
parent a361b92184
commit 5c4cc0d646
5 changed files with 23 additions and 14 deletions
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8
docs/MCU_Commands.md
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@ -50,7 +50,7 @@ Common startup commands:
may be useful for configuring the initial value of LEDs and for
configuring the initial value of stepper driver micro-stepping pins.
* `set_pwm_out pin=%u cycle_ticks=%u value=%c` : This command will
* `set_pwm_out pin=%u cycle_ticks=%u value=%hu` : This command will
immediately configure the given pin to use hardware based
pulse-width-modulation (PWM) with the given number of
cycle_ticks. The "cycle_ticks" is the number of MCU clock ticks each
@ -148,7 +148,7 @@ This section lists some commonly used config commands.
feature can be used with heater pins to ensure the host does not
enable the heater and then go off-line.
* `config_pwm_out oid=%c pin=%u cycle_ticks=%u default_value=%c
* `config_pwm_out oid=%c pin=%u cycle_ticks=%u default_value=%hu
max_duration=%u` : This command creates an internal object for
hardware based PWM pins that the host may schedule updates for. Its
usage is analogous to config_digital_out - see the description of
@ -205,11 +205,11 @@ only of interest to developers looking to gain insight into Klipper.
same 'oid' parameter must have been issued during micro-controller
configuration.
* `schedule_pwm_out oid=%c clock=%u value=%c` : Schedules a change to
* `schedule_pwm_out oid=%c clock=%u value=%hu` : Schedules a change to
a hardware PWM output pin. See the 'schedule_digital_out' and
'config_pwm_out' commands for more info.
* `schedule_soft_pwm_out oid=%c clock=%u value=%c` : Schedules a
* `schedule_soft_pwm_out oid=%c clock=%u value=%hu` : Schedules a
change to a software PWM output pin. See the 'schedule_digital_out'
and 'config_soft_pwm_out' commands for more info.