def _dap_transfer_block_free_bytes(self, size):
        send = size - 5 - 4 * self._write_count
        recv = size - 4 - 4 * self._read_count
        return send, recv
Get the number of free bytes left in the packet and response
dataset/ETHPy150Open mbedmicro/pyOCD/pyOCD/pyDAPAccess/dap_access_usb.py/_Command._dap_transfer_block_free_bytes