Commit Graph

15 Commits

Author SHA1 Message Date
Kevin O'Connor 7cadd8d3f4 spi_temperature: Use bus.py helper code for spi
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
2018-11-21 12:12:31 -05:00
Kevin O'Connor 30013a1fb8 mcu: Rename add_config_object() to register_config_callback()
Change the name of the config registration method and pass an explicit
reference to the callback to the new method.  This makes the
relationship between mcu registration and build_config() more clear in
the calling code.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
2018-09-03 11:48:22 -04:00
Kevin O'Connor 273a98d39a pins: Explicitly pass can_invert and can_pullup to lookup_pin()
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>
2018-07-26 09:44:45 -04:00
Kevin O'Connor 7d0f3649f3 spi_temperature: The query_thermocouple command is an init command
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>
2018-07-24 19:50:11 -04:00
Kevin O'Connor 63dffd9307 spi_temperature: Provide a default value for spi_speed
All of the Maxim chips support a 4Mhz spi transfer rate, so use that
as a default spi speed.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
2018-07-24 15:49:14 -04:00
Kevin O'Connor 5b124d59f2 spi_temperature: Remove spi_mode parameter
All of the Maxim chips can use SPI mode 1, so no need to configure it.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
2018-07-24 15:47:17 -04:00
Kevin O'Connor 70f765f62f spi_temperature: Don't raise error on a fault - invoke a shutdown
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>
2018-07-24 15:20:45 -04:00
Kevin O'Connor a084c38b41 spi_temperature: Eliminate get_configs() callback
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>
2018-07-24 15:20:38 -04:00
Kevin O'Connor c52c398ae8 spi_temperature: Eliminate self.chip_type variable
The chip type is now always unique in each class.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
2018-07-24 15:00:23 -04:00
Kevin O'Connor f168032901 spi_temperature: Eliminate check_faults() callback
The faults can be checked from the calc_temp() method.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
2018-07-24 14:54:31 -04:00
Kevin O'Connor f20dd0c9be spi_temperature: Break up thermocouple code into individual classes
Break the Thermocouple() class into MAX31856(), MAX31855(), and
MAX6675() classes.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
2018-07-24 14:54:31 -04:00
Kevin O'Connor 7510efe827 spi_temperature: Use setup_minmax() to set the temperature range
Use setup_minmax() instead of directly reading the min/max temperature
from the config.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
2018-07-24 14:12:00 -04:00
Kevin O'Connor 270080cd4c spi_temperature: Remove non-spi flags from SensorBase
The SensorBase class is used exclusively for SPI transfers, so no need
to track non-spi settings.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
2018-07-24 14:05:35 -04:00
Ricardo Amezquita 756514adef thermocouple: Add support for MAX6675 chip
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>
2018-07-24 11:16:05 -04:00
Kevin O'Connor eba252d3fd thermocouple: Add initial support for common SPI temperature sensing chips
Signed-off-by: Petri Honkala <cruwaller@gmail.com>
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
2018-07-24 11:16:05 -04:00