Move to v2 backplane (power connections, and UART to backplane)

oresat / oresat-c3-hardware

C3 (Command, Communication, and Control) our Command and Data Handling (C&DH) card.

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Move to v2 backplane (power connections, and UART to backplane) #46

Closed andrewgreenberg closed 1 year ago

andrewgreenberg commented 2 years ago

Bring up to v2 backplane!

andrewgreenberg commented 1 year ago

Done, except for C3-UART-TX/RX. This brings up an important point - should that be the CLI UART? or if we want a back channel to other cards, does that HAVE to be a difference UART? Maybe we can do both via GPIO tri-state control?

andrewgreenberg commented 1 year ago

We're using USART3 for the CLI. Pins we have available that have UART alternate functions: PA0 - 23 - UART4_TX PA1 - 24 - UART4_RX PA2 - 25 - USART2_TX PA3 - 26 - USART2_RX PC6 - 63 - USART6_TX PC7 - 64 - USART6_RX

Free pins that don't do UARTs: PB0, PB1, PB2, PC13, PD14, PD15, PE4, PE5, PE6, PE9

andrewgreenberg commented 1 year ago

Connected up USART6; waiting for firmware folks to OK.

andrewgreenberg commented 1 year ago

No longer relevant for the v6 since we switched to the Octavo.