import spidev
import time

spi = spidev.SpiDev(0,0)
spi.open(0,0)
msg= 0xAA
spi.max_speed_hz=115200
while 1:
spi.writebytes([0x4,0x06])
y=spi.readbytes(1)
print(y)
time.sleep(0.5)