from machine import UART

uart = UART(0, 9600)

while True:
    if uart.any() == True:
        buf = uart.read()
        aux = buf.decode('ASCII')
        info = aux.split()
        print(info)
        n1 = int(info[0])
        n2 = int(info[1])
        if info[2] == '+':
            res = n1 + n2
        elif info[2] == '-':
            res = n1 - n2
        elif info[2] == '/':
            res = n1 / n2
        elif info[2] == '*':
            res = n1 * n2
        else:
            res = -1
        sal = "Resultado = " + str(res)
        print(sal)
        sal_bin = sal.encode('ASCII')
        uart.write(sal_bin)