simple_serial_relay_control.py

from umachine import Pin, UART, WDT
import utime, ameba

relay_ctrl_pin = Pin("PD_4", mode=Pin.OUT)

uart = UART(0, rx="PA_6", tx="PA_7")
uart.init()
wdt = WDT()

utime.sleep(3)
print("start ")


while True:
    while True:
        chr = uart.read(1)
        print("get")
        print(chr)
        if chr == b'1':
            ameba.mem16[0x40040008] = 0b111
            relay_ctrl_pin.value(1)
            utime.sleep(60*7)
            #utime.sleep(5)
            relay_ctrl_pin.value(0)
            while (ameba.mem16[0x40040014] & 0b01):
                n = uart.read(1)
        elif chr == b'0':
            relay_ctrl_pin.value(0)
        else:
            print("get {}".format(chr))