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pca9685: Support default values

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Allow the pwm pin to have a non-zero default value.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2017-10-11 23:18:33 -04:00
parent db97f36631
commit 3c4d14bfa9
2 changed files with 46 additions and 25 deletions
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19
klippy/chipmisc.py
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@ -123,6 +123,7 @@ class pca9685_pwm:
self._max_duration = 2.
self._oid = None
self._invert = pin_params['invert']
self._shutdown_value = float(self._invert)
self._last_clock = 0
self._pwm_max = 0.
self._cmd_queue = self._mcu.alloc_command_queue()
@ -141,6 +142,12 @@ class pca9685_pwm:
if self._invert:
value = 1. - value
self._static_value = max(0., min(1., value))
def setup_shutdown_value(self, value):
if self._invert:
value = 1. - value
self._shutdown_value = max(0., min(1., value))
if self._shutdown_value:
self._replicape.note_enable_on_shutdown()
def build_config(self):
self._pwm_max = self._mcu.get_constant_float("PCA9685_MAX")
cycle_ticks = self._mcu.seconds_to_clock(self._cycle_time)
@ -154,10 +161,12 @@ class pca9685_pwm:
return
self._oid = self._mcu.create_oid()
self._mcu.add_config_cmd(
"config_pca9685 oid=%d bus=%d addr=%d channel=%d"
" cycle_ticks=%d max_duration=%d" % (
self._oid, self._bus, self._address, self._channel,
cycle_ticks, self._mcu.seconds_to_clock(self._max_duration)))
"config_pca9685 oid=%d bus=%d addr=%d channel=%d cycle_ticks=%d"
" value=%d default_value=%d max_duration=%d" % (
self._oid, self._bus, self._address, self._channel, cycle_ticks,
self._invert * self._pwm_max,
self._shutdown_value * self._pwm_max,
self._mcu.seconds_to_clock(self._max_duration)))
self._set_cmd = self._mcu.lookup_command(
"schedule_pca9685_out oid=%c clock=%u value=%hu")
def set_pwm(self, print_time, value):
@ -249,6 +258,8 @@ class Replicape:
self.host_mcu.add_config_cmd("send_spi bus=%d dev=%d msg=%s" % (
REPLICAPE_SHIFT_REGISTER_BUS, REPLICAPE_SHIFT_REGISTER_DEVICE,
"".join(["%02x" % (x,) for x in shift_registers])))
def note_enable_on_shutdown(self):
self.mcu_enable.setup_shutdown_value(1)
def note_enable(self, print_time, channel, is_enable):
if is_enable:
is_off = not self.enabled_channels