from qolab.hardware.basic import BasicInstrument
from qolab.hardware.power_supply import PowerSupplySCPI
import re
import numpy as np

class KeysightE3612A(PowerSupplySCPI):
    """ Keysight E3612A power supply """
    def __init__(self, resource, *args, **kwds):
        super().__init__(resource, *args, **kwds)
        # self.resource.read_termination='\n'
        self.config['Device model'] = 'Keysight E3612A'
        self.numberOfChannels = 1
        # self.channelProperties = {'Vlimit', 'Ilimit', 'Vout', 'Iout' }
        self.channelProperties = {'Vout', }

    def chanOn(self, chNum):
        self.write(f'OUTP ON,(@{chNum})')

    def chanOff(self, chNum):
        self.write(f'OUTP OFF,(@{chNum})')

    @BasicInstrument.tsdb_append
    def getChanState(self, chNum):
        qstr = f'OUTP? (@{chNum})'
        rstr = self.query(qstr)
        return( bool(float(rstr)) )

    @BasicInstrument.tsdb_append
    def getChanVout(self, chNum):
        qstr = f'MEAS:VOLT? (@{chNum})'
        rstr = self.query(qstr)
        return( float(rstr) )

    @BasicInstrument.tsdb_append
    def getChanIout(self, chNum):
        qstr = f'MEAS:CURR? (@{chNum})'
        rstr = self.query(qstr)
        return( float(rstr) )


if __name__ == '__main__': 
    import pyvisa
    print("testing")
    rm = pyvisa.ResourceManager()
    print(rm.list_resources())    
    instr=rm.open_resource('USB0::10893::4354::MY61001869::0::INSTR')
    ps = KeysightE3612A(instr)
    print('------ Header start -------------')
    print(str.join('\n', ps.getHeader()))
    print('------ Header ends  -------------')