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At some point, avr-gcc lost its ability to find the loader scripts
necessary to link programs. That appears to be fixed now, at least on
my machine.
Signed-off-by: Keith Packard <keithp@keithp.com>
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This allows the user to specify which compiler to use for each target
CPU. Also checks to make sure the arm compiler supports -m0 and -m3
cpu type flags. The build now actually uses the specified compilers too.
Signed-off-by: Keith Packard <keithp@keithp.com>
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This sticks the micropeak sources in appropriate directories, rather
than in the micropeak product directory so that they can be shared
with future micropeak-style products.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Something changed in the binutils-avr package which makes the linker
fail to find the script in the default location.
Signed-off-by: Keith Packard <keithp@keithp.com>
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This filters altitudes more accurately and also allows tracking of
acceleration, which is used to discard height data generated by
ejection charge noise
Signed-off-by: Keith Packard <keithp@keithp.com>
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I prototyped the mpserial interface on a breadboard and tuned the
circuit to register the LED correctly. Then adjusted the serial code
to send bits at the right speed and format.
The logging contents are now in hexdecimal with a CCITT CRC-16
computed to verify correct reception.
Signed-off-by: Keith Packard <keithp@keithp.com>
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This logs barometric data every 192ms (more or less) to the 504
remaining bytes of internal EEPROM storage in the ATtiny85. This
provides 48.192 seconds of logging.
Signed-off-by: Keith Packard <keithp@keithp.com>
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This sets the programming clock to 1/4 of the 250kHz clock used by the
MicroPeak firmware, allowing the device to be reprogrammed.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Signed-off-by: Keith Packard <keithp@keithp.com>
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Blinks out max height in decimeters, stores previous flight data to
internal eeprom.
Signed-off-by: Keith Packard <keithp@keithp.com>
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