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Instead of blocking on PQT, just set up the receiver to start going
and when the first bit interrupt comes in, grab the SPI bus if
possible and configure it for reception. This improves sensitivity in
the radio by a significant amount while making the code conceptually a
bit nicer.
Signed-off-by: Keith Packard <keithp@keithp.com>
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This sticks a barrier in the CPU to prevent using the wrong stack
register past the change.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Support the USB boot loader, add USB pull-up support.
Signed-off-by: Keith Packard <keithp@keithp.com>
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They're amazingly noisy on EasyMini, so just filter them as the only
thing we use them for is battery and pyro numbers.
Signed-off-by: Keith Packard <keithp@keithp.com>
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They're still very unstable (bouncing around a lot), but at least they
seem to report useful stuff now.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Signed-off-by: Keith Packard <keithp@keithp.com>
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Signed-off-by: Keith Packard <keithp@keithp.com>
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Signed-off-by: Keith Packard <keithp@keithp.com>
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Signed-off-by: Keith Packard <keithp@keithp.com>
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The lpc demo now has a USB command line.
Also allocates system stack so we know when ram is tight at build time
Signed-off-by: Keith Packard <keithp@keithp.com>
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This gets the LPC11U14 clock set to the PLL and blinks the LED.
Signed-off-by: Keith Packard <keithp@keithp.com>
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