chipmisc: Add support for statically configured output pins

Allow digital and PWM output pins to be setup via new config
sections.  This makes it easier to setup pin configurations.

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

1 files changed, 43 insertions, 0 deletions

diff --git a/klippy/chipmisc.py b/klippy/chipmisc.py
new file mode 100644
index 00000000..bdcb59d8
--- /dev/null
+++ b/klippy/chipmisc.py
@@ -0,0 +1,43 @@
+# Code to configure miscellaneous chips
+#
+# Copyright (C) 2017  Kevin O'Connor <kevin@koconnor.net>
+#
+# This file may be distributed under the terms of the GNU GPLv3 license.
+import pins
+
+
+######################################################################
+# Statically configured output pins
+######################################################################
+
+class PrinterStaticDigitalOut:
+    def __init__(self, printer, config):
+        pin_list = [pin.strip() for pin in config.get('pins').split(',')]
+        for pin_desc in pin_list:
+            mcu_pin = pins.setup_pin(printer, 'digital_out', pin_desc)
+            mcu_pin.setup_static()
+
+class PrinterStaticPWM:
+    def __init__(self, printer, config):
+        mcu_pwm = pins.setup_pin(printer, 'pwm', config.get('pin'))
+        mcu_pwm.setup_max_duration(0.)
+        hard_pwm = config.getint('hard_pwm', None, minval=1)
+        if hard_pwm is None:
+            mcu_pwm.setup_cycle_time(config.getfloat(
+                'cycle_time', 0.100, above=0.))
+        else:
+            mcu_pwm.setup_hard_pwm(hard_pwm)
+        scale = config.getfloat('scale', 1., above=0.)
+        value = config.getfloat('value', minval=0., maxval=scale)
+        mcu_pwm.setup_static_pwm(value / scale)
+
+
+######################################################################
+# Setup
+######################################################################
+
+def add_printer_objects(printer, config):
+    for s in config.get_prefix_sections('static_digital_output '):
+        printer.add_object(s.section, PrinterStaticDigitalOut(printer, s))
+    for s in config.get_prefix_sections('static_pwm_output '):
+        printer.add_object(s.section, PrinterStaticPWM(printer, s))