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Dedicated GPIO pins
Strato Pi uses some of the Raspberry Pi's GPIO pins. These pins should not be used for
other functions.
GPIO pin
GPIO2/SDA
GPIO3/SCL
GPIO14/TXD
GPIO15/RXD
GPIO5
GPIO6
GPIO12
GPIO16
GPIO20
GPIO13
GPIO19
15
Direction
out
in
out
out
in
out
out
out
in
Description
I
2
C SDA line for the real time clock
I
C SCL line for the real time clock
2
serial TX line
serial RX line
cycle high/low for watchdog heartbeat
set to high to enable the watchdog
high on watchdog timeout
set to high to enable the shutdown cycle
set to high to sound the buzzer
soft serial TX for Strato MCU configuration
soft serial RX for Strato MCU configuration
Strato Pi Base User Guide
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