CP2110 fake interface

cp2110_serial.py

import cp2110
cp2110.cp2110 = cp2110


class CP2110Serial:
    def __init__(self, baud):
        self.device = cp2110.CP2110Device()

        self.device.set_uart_config(cp2110.UARTConfig(
            baud=baud,
            parity=cp2110.PARITY.NONE,
            flow_control=cp2110.FLOW_CONTROL.ENABLED,
            data_bits=cp2110.DATA_BITS.EIGHT,
            stop_bits=cp2110.STOP_BITS.SHORT))
        if not self.device.is_uart_enabled():
            self.device.enable_uart()

        self.bootloader_pin = 13
        self.reset_pin = 12

    def flushInput(self):
        self.device.purge_fifos(cp2110.FIFO.BOTH)

    def read(self, size=None):
        return self.device.read(size)

    def write(self, data):
        return self.device.write(data)

    def getDTR(self):
        report, *pins = self.device.device.get_feature_report(0x44, 3)
        assert report == 0x44
        return (int.from_bytes(pins, 'big') & (1 << self.bootloader_pin)) >> self.bootloader_pin

    def getRTS(self):
        report, *pins = self.device.device.get_feature_report(0x44, 3)
        assert report == 0x44
        return (int.from_bytes(pins, 'big') & (1 << self.reset_pin)) >> self.reset_pin

    def setDTR(self, value):
        new_vals = int.to_bytes(value << self.bootloader_pin, 2, 'big')
        self.device.device.send_feature_report(
            cp2110.outbuf(0x45, *new_vals, *int.to_bytes(1 << self.bootloader_pin, 2, 'big')))

    def setRTS(self, value):
        new_vals = int.to_bytes(value << self.reset_pin, 2, 'big')
        self.device.device.send_feature_report(
            cp2110.outbuf(0x45, *new_vals, *int.to_bytes(1 << self.reset_pin, 2, 'big')))