import utime
import hub
from hub import port

port.A.mode(port.MODE_FULL_DUPLEX)
a=port.A
a.baud(115200)

i=0
while True:
    utime.sleep_ms(150)
    p=hub.button.center.was_pressed()
    if p==True:
        i=i+1
        hub.display.show(i)
        print("Send: " + str(i))
        a.write(str(i))
        if i==9:
            i=0