Add raspberry pi power control pin

circuitpython/code/main.py

@@ -51,6 +51,7 @@ import time
 import gc
 import rtc
 import board
+from digitalio import DigitalInOut, Direction
 from busio import UART
 # import micropython
 import neopixel
@@ -75,6 +76,11 @@ NEOPIXEL_MAX_VALUE = 70     # max value instead of brightness to spare some mem
 gc.collect()
 # micropython.mem_info()
 
+#Set ENable pin for Raspberry power microcontrol
+RPI_EN = DigitalInOut(board.D9)
+RPI_EN.direction = Direction.OUTPUT
+RPI_EN.value = True
+
 # Enable RTC of the feather M0 board
 CLOCK = rtc.RTC()