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tmc: Add support for virtual enable pins

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Add support for enabling the stepper via the communication channel.
This improves support for boards with a shared enable line.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2019-06-12 23:28:22 -04:00 • committed by KevinOConnor
parent 041831f93a
commit 7702f0a027
7 changed files with 67 additions and 18 deletions
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8
klippy/extras/tmc2660.py
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@ -23,7 +23,7 @@ Fields["DRVCTRL"] = {
}
Fields["CHOPCONF"] = {
"TOFF": 0x0f,
"toff": 0x0f,
"HSTRT": 0x7 << 4,
"HEND": 0x0f << 7,
"HDEC": 0x03 << 11,
@ -101,7 +101,7 @@ FieldFormatters = {
"DEDGE": (lambda v:
"1(Both Edges Active)" if v else "0(Only Rising Edge active)"),
"INTPOL": (lambda v: "1(On)" if v else "0(Off)"),
"TOFF": (lambda v: ("%d" % v) if v else "0(Driver Disabled!)"),
"toff": (lambda v: ("%d" % v) if v else "0(Driver Disabled!)"),
"CHM": (lambda v: "1(constant toff)" if v else "0(spreadCycle)"),
"SFILT": (lambda v: "1(Filtered mode)" if v else "0(Standard mode)"),
"VSENSE": (lambda v: "%d(%dmV)" % (v, 165 if v else 305)),
@ -242,6 +242,8 @@ class TMC2660:
self.fields = tmc.FieldHelper(Fields, SignedFields, FieldFormatters)
self.fields.set_field("SDOFF", 0) # Access DRVCTRL in step/dir mode
self.mcu_tmc = MCU_TMC2660_SPI(config, Registers, self.fields)
# Allow virtual pins to be created
tmc.TMCVirtualPinHelper(config, self.mcu_tmc)
# Register commands
cmdhelper = tmc.TMCCommandHelper(config, self.mcu_tmc)
cmdhelper.setup_register_dump(ReadRegisters)
@ -259,7 +261,7 @@ class TMC2660:
set_config_field(config, "CHM", 0)
set_config_field(config, "HEND", 3)
set_config_field(config, "HSTRT", 3)
set_config_field(config, "TOFF", 4)
set_config_field(config, "toff", 4)
if not self.fields.get_field("CHM"):
if (self.fields.get_field("HSTRT") +
self.fields.get_field("HEND")) > 15: