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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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