fast_counter_fpga_qo.py 文件源码

def _set_dac_voltages(self):
        """
        """
        with self.threadlock:
            dac_sma_mapping = {1: 1, 2: 5, 3: 2, 4: 6, 5: 3, 6: 7, 7: 4, 8: 8}
            set_voltage_cmd = 0x03000000
            for dac_chnl in range(8):
                sma_chnl = dac_sma_mapping[dac_chnl+1]
                dac_value = int(np.rint(4096*self._switching_voltage[sma_chnl]/(2.5*2)))
                if dac_value > 4095:
                    dac_value = 4095
                elif dac_value < 0:
                    dac_value = 0
                tmp_cmd = set_voltage_cmd + (dac_chnl << 20) + (dac_value << 8)
                self._fpga.SetWireInValue(0x01, tmp_cmd)
                self._fpga.UpdateWireIns()
                self._fpga.ActivateTriggerIn(0x41, 0)
        return