ad5206: Move the ad5206 code from chipmisc.py to extras directory

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

1 files changed, 30 insertions, 0 deletions

diff --git a/klippy/extras/ad5206.py b/klippy/extras/ad5206.py
new file mode 100644
index 00000000..f71655df
--- /dev/null
+++ b/klippy/extras/ad5206.py
@@ -0,0 +1,30 @@
+# AD5206 digipot code
+#
+# Copyright (C) 2017,2018  Kevin O'Connor <kevin@koconnor.net>
+#
+# This file may be distributed under the terms of the GNU GPLv3 license.
+import pins
+
+class ad5206:
+    def __init__(self, config):
+        printer = config.get_printer()
+        enable_pin_params = pins.get_printer_pins(printer).lookup_pin(
+            'digital_out', config.get('enable_pin'))
+        self.mcu = enable_pin_params['chip']
+        self.pin = enable_pin_params['pin']
+        self.mcu.add_config_object(self)
+        scale = config.getfloat('scale', 1., above=0.)
+        self.channels = [None] * 6
+        for i in range(len(self.channels)):
+            val = config.getfloat('channel_%d' % (i+1,), None,
+                                  minval=0., maxval=scale)
+            if val is not None:
+                self.channels[i] = int(val * 256. / scale + .5)
+    def build_config(self):
+        for i, val in enumerate(self.channels):
+            if val is not None:
+                self.mcu.add_config_cmd(
+                    "send_spi_message pin=%s msg=%02x%02x" % (self.pin, i, val))
+
+def load_config(config):
+    return ad5206(config)