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Updates since presentation
Using stm32f7 - easier to integrate + still has all the features we need
QSPI flash to mitigate data storage rate worries from grim
STLink MINIE instead of STLink MODS. Less space taken up on board technically less features but covers the features we were planning to use on mods. Maintains
Selected LAN8742A for PHY transceiver. Used on the nucleo for the f7 and we’re going to steal their circuit1
Move BME280, LSM6DSL, ADXL375 to SPI (they all have zephyr drivers and have proven to lock up our i2c bus). MS5611 and INA260 stay on i2c bc we either sample them very slowly or don’t wanna write a SPI driver for MS5611.
Presentation Notes
Do we want to make the 2 P-IO pins on i2c pins or PWM pins (routing)
Old temperature Requirements (10F-110F) were silly
0C-50C is prolly good
Pick requirements for sensors more betterly
Gyro: Small angular random walk
How would it work if we lost power? -dean
Altimeter boost detect would probably still work
IMU boost detect wouldnt
Just dont loose power lol
Configurability in field
really vague requirement (telling aaron to reflash them is configurabililty in field)
has a console to reconfigure - better way to say that
Don’t need arming switch
Make boost detect requirement verify by test
Conops was not a conops
wiring was a little nasty
DE9 Pin shenanigans
2x ematch
2x rs48
2x PIO
5v
GND
ematch bypassbreaking out kinda sketchy
but we need to break it out anyways so
BMP388 vs 390. which one is available
board space might be tight
make a harness diagram for a de9
Little plane whats the deal with that
sketchy header thingy to power mod would work
stlink cut first
takes up a lot of space
dont have compatibility with jlink
is convenient tho
Leds should run at 3.3V
Double check buzzer stuff
can it actually make music
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