manual update

pull/3/head
emard 6 years ago
parent 71a797d710
commit 1a04c97f7d

@ -126,6 +126,16 @@ There is SHUTDOWN pin where FPGA can turn OFF the board.
This pin is not correctly routed on PCB v1.7 and needs
hardware upgrade to make it work.
When board is ready to accept SHUTDOWN signal, LED D11
(found on back side of the board near J1 pin 22) should
be very dimly lit, visible in the dark.
While D11 is dimly lit, power down
board by setting SHUTDOWN signal to 1
(or shortly and carefully connect 1k resistor between SHUTDOWN pin of R13
and 3.3V).
When RTC ALARM is triggered, board should turn ON and D11 should be OFF
indicating board can't enter SHUTDOWN until RTC ALARM flag is cleared.
On J2 connector there are 2 pins for 5V external power input
and output. They are located on top right, near pin labeled 27
and US2 connector. Power is unidirectionaly routed using schottky

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