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* altos: Move common build definitions to src/Makefile.defsKeith Packard2019-02-18
| | | | | | | | This cleans up the build process for all architectures, providing a common place to specify vpath, cflags and build rules for various common files. Signed-off-by: Keith Packard <keithp@keithp.com>
* altos: Make cmd number parsing functions return valueKeith Packard2018-10-13
| | | | | | Don't use a global variable to hold the result. Signed-off-by: Keith Packard <keithp@keithp.com>
* altos/vidtime: Check for value change in normal code, not irqKeith Packard2018-05-16
| | | | | | This makes sure each value change is reported to the user. Signed-off-by: Keith Packard <keithp@keithp.com>
* altos: add 'vidtime', a simple brightness monitorKeith Packard2018-05-07
This is a testing tool for video refresh tracking. It uses the mpusb v3.0 hardware and monitors the phototransistor value, sending 0 or 1 to the USB port when the value changes. Signed-off-by: Keith Packard <keithp@keithp.com>