"""
provide basic class to operate SCPI capable instruments
"""

class SCPIinstr:
    """ Basic class which support SCPI commands """
    """     
    Do not instantiate directly, use
    rm = pyvisa.ResourceManager()
    SCPIinstr(rm.open_resource('TCPIP::192.168.0.2::INSTR'))
    """
    def __init__(self, resource):
        self.resource = resource
        
        # convenience pyvisa functions
        self.write = self.resource.write
        self.read = self.resource.read
        self.query = self.resource.query
        self.read_bytes = self.resource.read_bytes
        self.read_binary_values = self.resource.read_binary_values
        self.query_binary_values = self.resource.query_binary_values

    @property
    def idn(self):
        return self.query("*IDN?")

    def clear_status(self):
        self.write("*CLS")

    def set_event_status_enable(self):
        self.write("*ESE")
    
    def query_event_status_enable(self):
        self.query("*ESE?")

    def query_event_status_register(self):
        self.query("*ESR?")

    def set_wait_until_finished(self):
        self.query("*OPC")

    def wait_until_finished(self):
        self.query("*OPC?")

    def reset(self):
        self.write("*RST")
    
    def set_service_request_enable(self):
        self.write("*SRE")

    def query_service_request_enable(self):
        self.query("*SRE?")

    def query_status_byte(self):
        self.query("*STB?")
    
    def self_test_result(self):
        self.query("*TST?")
    
    def wait(self):
        self.write("*WAI")