Don't pass pin_type to lookup_pin() - instead, if a pin can be
inverted or can have a pullup, then the caller must explicitly specify
that when calling lookup_pin(). This simplifies the code for the
cases where it is not valid to invert or pullup.
Explicitly pass the pin_type to setup_pin() and have ppins.setup_pin()
apply default pullup and invert flags.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Make sure to use is_init=True when sending query_thermocouple -
otherwise, the config CRC is likely to mismatch on every connection.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Raising an error from the background message reception thread isn't
well defined. Instead, on a temperature fault, invoke a printer
shutdown.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Those chips that require an spi init sequence can generate the message
directly in the chip specific class.
Also, don't send an spi init message for chips that are read-only.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
The MAX6675 chip has a different read sequence than the MAX31855 chip.
Signed-off-by: Ricardo Amézquita <ramezquitao@cihologramas.com>
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Kevin O'Connor