esptool.py 文件源码

def __call__(self, parser, namespace, value, option_string=None):
        if value.upper() == "SPI":
            value = 0
        elif value.upper() == "HSPI":
            value = 1
        elif "," in value:
            values = value.split(",")
            if len(values) != 5:
                raise argparse.ArgumentError(self, '%s is not a valid list of comma-separate pin numbers. Must be 5 numbers - CLK,Q,D,HD,CS.' % value)
            try:
                values = tuple(int(v,0) for v in values)
            except ValueError:
                raise argparse.ArgumentError(self, '%s is not a valid argument. All pins must be numeric values' % values)
            if any([v for v in values if v > 33 or v < 0]):
                raise argparse.ArgumentError(self, 'Pin numbers must be in the range 0-33.')
            # encode the pin numbers as a 32-bit integer with packed 6-bit values, the same way ESP32 ROM takes them
            # TODO: make this less ESP32 ROM specific somehow...
            clk,q,d,hd,cs = values
            value = (hd << 24) | (cs << 18) | (d << 12) | (q << 6) | clk
        else:
            raise argparse.ArgumentError(self, '%s is not a valid spi-connection value. ' +
                                         'Values are SPI, HSPI, or a sequence of 5 pin numbers CLK,Q,D,HD,CS).' % values)
        setattr(namespace, self.dest, value)