aardvark_py.py 文件源码

def aa_i2c_slave_set_response (aardvark, data_out):
    """usage: int return = aa_i2c_slave_set_response(Aardvark aardvark, u08[] data_out)

    All arrays can be passed into the API as an ArrayType object or as
    a tuple (array, length), where array is an ArrayType object and
    length is an integer.  The user-specified length would then serve
    as the length argument to the API funtion (please refer to the
    product datasheet).  If only the array is provided, the array's
    intrinsic length is used as the argument to the underlying API
    function."""

    if not AA_LIBRARY_LOADED: return AA_INCOMPATIBLE_LIBRARY
    # data_out pre-processing
    (data_out, num_bytes) = isinstance(data_out, ArrayType) and (data_out, len(data_out)) or (data_out[0], min(len(data_out[0]), int(data_out[1])))
    if data_out.typecode != 'B':
        raise TypeError("type for 'data_out' must be array('B')")
    # Call API function
    return api.py_aa_i2c_slave_set_response(aardvark, num_bytes, data_out)


# Return number of bytes written from a previous
# Aardvark->I2C_master transmission.  Since the transmission is
# happening asynchronously with respect to the PC host
# software, there could be responses queued up from many
# previous write transactions.