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* spicmds: Check for an incorrect mode in spicmds.cKevin O'Connor2018-11-301-4/+8
| | | | | | | Check the mode parameter in spicmds.c so that the mcu code does not need to check it. Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
* thermocouple: Add initial support for common SPI temperature sensing chipsKevin O'Connor2018-07-241-1/+8
| | | | | Signed-off-by: Petri Honkala <cruwaller@gmail.com> Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
* spidev: Minor rework to spidev_transfer()Kevin O'Connor2018-07-111-7/+7
| | | | | | | Gcc does a better job of inlining code if spidev_transfer() is reworked slightly. Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
* SPI: introduce spi_prepare functionGrigori Goronzy2018-07-081-0/+2
| | | | | | | | | | | | | | | | The SPI interface needs to be enabled and configured to the correct settings of a given oid before CS is asserted. The new function spi_prepare() allows ports to do that. This port only introduces the new function in all ports with no implementation and adds the call to the Klipper generic firmware code. That means everything still works as before. Ports need to be changed to fix the underlying issue. Discussion about the motivation here: https://github.com/KevinOConnor/klipper/pull/453#issuecomment-403131149 Signed-off-by: Grigori Goronzy <greg@chown.ath.cx>
* spicmds: Rework SPI message transmissionKevin O'Connor2018-05-071-11/+98
| | | | | | | | | Improve the SPI message transmit system. Add support for bus speed and bus mode. Add support for sending SPI messages on shutdown. Signed-off-by: Petri Honkala <cruwaller@gmail.com> Signed-off-by: Douglas Hammond <wizhippo@gmail.com> Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
* Initial commit of source code.Kevin O'Connor2016-05-251-0/+22
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
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