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tmc: It's not valid to schedule messages with print_time=0

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A print_time of zero may translate to a negative clock on a secondary
micro-controller, which would cause an internal error.  Change the
code to pass a real print_time or None if it is not needed.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2019-06-25 18:15:17 -04:00
parent 79c24f95b3
commit 6ec7dee07d
4 changed files with 21 additions and 14 deletions
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8
klippy/extras/tmc2130.py
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@ -186,12 +186,14 @@ class MCU_TMC_SPI:
params = self.spi.spi_transfer([reg, 0x00, 0x00, 0x00, 0x00])
pr = bytearray(params['response'])
return (pr[1] << 24) | (pr[2] << 16) | (pr[3] << 8) | pr[4]
def set_register(self, reg_name, val, print_time=0.):
min_clock = self.spi.get_mcu().print_time_to_clock(print_time)
def set_register(self, reg_name, val, print_time=None):
minclock = 0
if print_time is not None:
minclock = self.spi.get_mcu().print_time_to_clock(print_time)
reg = Registers[reg_name]
data = [(reg | 0x80) & 0xff, (val >> 24) & 0xff, (val >> 16) & 0xff,
(val >> 8) & 0xff, val & 0xff]
self.spi.spi_send(data, min_clock)
self.spi.spi_send(data, minclock)
######################################################################