pin_dic = {
            'SDA':3,
            'SLC':5,
            'G4' :7,
            'G17':11,
            'G27':13,
            'G22':15,
            'MOSI':19,
            'MISO':21,
            'SCL':23,
            'IDSD':27,
            'G5':29,
            'G6':31,
            'G13':33,
            'G19':35,
            'G26':37,
            'TXD':8,
            'RXD':10,
            'G18':12,
            'G23':16,
            'G24':18,
            'G25':32,
            'CE0':24,
            'CE1':26,
            'IDSC':28,
            'G12':32,
            'G16':36,
            'G20':38,
            'G21':40}