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mcu: Increase the time to reset a pwm pin during startup 

Some RPi0 users were reporting "timer too close" errors due to pwm pin
resets - increase the time the host has to complete the startup to
avoid this.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2020-10-06 19:23:15 -04:00
parent d317793171
commit 27249dc709
1 changed files with 3 additions and 6 deletions
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9
klippy/mcu.py
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@ -196,6 +196,9 @@ class MCU_pwm:
self._is_static = is_static self._is_static = is_static
def _build_config(self): def _build_config(self):
cmd_queue = self._mcu.alloc_command_queue() cmd_queue = self._mcu.alloc_command_queue()
curtime = self._mcu.get_printer().get_reactor().monotonic()
printtime = self._mcu.estimated_print_time(curtime)
self._last_clock = self._mcu.print_time_to_clock(printtime + 0.200)
cycle_ticks = self._mcu.seconds_to_clock(self._cycle_time) cycle_ticks = self._mcu.seconds_to_clock(self._cycle_time)
if self._hardware_pwm: if self._hardware_pwm:
self._pwm_max = self._mcu.get_constant_float("PWM_MAX") self._pwm_max = self._mcu.get_constant_float("PWM_MAX")
@ -213,9 +216,6 @@ class MCU_pwm:
self._start_value * self._pwm_max, self._start_value * self._pwm_max,
self._shutdown_value * self._pwm_max, self._shutdown_value * self._pwm_max,
self._mcu.seconds_to_clock(self._max_duration))) self._mcu.seconds_to_clock(self._max_duration)))
curtime = self._mcu.get_printer().get_reactor().monotonic()
printtime = self._mcu.estimated_print_time(curtime)
self._last_clock = self._mcu.print_time_to_clock(printtime + 0.100)
svalue = int(self._start_value * self._pwm_max + 0.5) svalue = int(self._start_value * self._pwm_max + 0.5)
self._mcu.add_config_cmd("schedule_pwm_out oid=%d clock=%d value=%d" self._mcu.add_config_cmd("schedule_pwm_out oid=%d clock=%d value=%d"
% (self._oid, self._last_clock, svalue), % (self._oid, self._last_clock, svalue),
@ -238,9 +238,6 @@ class MCU_pwm:
% (self._oid, self._pin, self._start_value >= 1.0, % (self._oid, self._pin, self._start_value >= 1.0,
self._shutdown_value >= 0.5, self._shutdown_value >= 0.5,
self._mcu.seconds_to_clock(self._max_duration))) self._mcu.seconds_to_clock(self._max_duration)))
curtime = self._mcu.get_printer().get_reactor().monotonic()
printtime = self._mcu.estimated_print_time(curtime)
self._last_clock = self._mcu.print_time_to_clock(printtime + 0.100)
svalue = int(self._start_value * self._pwm_max + 0.5) svalue = int(self._start_value * self._pwm_max + 0.5)
self._mcu.add_config_cmd( self._mcu.add_config_cmd(
"schedule_soft_pwm_out oid=%d clock=%d on_ticks=%d off_ticks=%d" "schedule_soft_pwm_out oid=%d clock=%d on_ticks=%d off_ticks=%d"