adding attenuator class

pyrelacs/repros/attcs3310.py

@@ -0,0 +1,130 @@
+import ctypes
+import time
+
+import uldaq
+from IPython import embed
+from pyrelacs.repros.repos import Repos
+from pyrelacs.util.logging import config_logging
+import numpy as np
+import matplotlib.pyplot as plt
+
+log = config_logging()
+
+
+class Attenuator(Repos):
+    def __init__(self) -> None:
+        super().__init__()
+
+    def check_attenuator(self):
+        """
+        ident     : attdev-1
+        strobepin : 6
+        datainpin : 5
+        dataoutpin: -1
+        cspin     : 4
+        mutepin   : 7
+        zcenpin   : -1
+        """
+        t = np.arange(0, DURATION, 1 / SAMPLERATE)
+        data = AMPLITUDE * np.sin(2 * np.pi * SINFREQ * t)
+        data_channels = np.concatenate((data, data))
+
+        db_values = [0, 0, -2, -5, -10, -20, -50]
+        for i, db_value in enumerate(db_values):
+            log.info(f"Attenuating the Channels, with {db_value}")
+            if i == 1:
+                log.info("Muting the Channels")
+                self.set_attenuation_level(
+                    db_value, db_value, mute_channel1=True, mute_channel2=True
+                )
+            else:
+                self.set_attenuation_level(db_value, db_value)
+
+            stim, ao_device = self.write_analog_dac(
+                data_channels,
+                [0, 1],
+                SAMPLERATE,
+                ScanOption=uldaq.ScanOption.EXTTRIGGER,
+                Range=uldaq.Range.BIP10VOLTS,
+            )
+            self.diggital_trigger()
+
+            try:
+                ao_device.scan_wait(uldaq.WaitType.WAIT_UNTIL_DONE, 15)
+            except uldaq.ul_exception.ULException:
+                log.debug("Operation timed out")
+                self.write_bit(channel=0, bit=0)
+                self.disconnect_dac()
+                self.connect_dac()
+                self.set_analog_to_zero()
+            finally:
+                self.write_bit(channel=0, bit=0)
+                self.disconnect_dac()
+                self.connect_dac()
+                self.set_analog_to_zero()
+
+            log.info("Sleeping for 1 second, before next attenuation")
+            time.sleep(1)
+        self.deactivate_attenuator()
+
+    def set_attenuation_level(
+        self,
+        db_channel1: float = 5.0,
+        db_channel2: float = 5.0,
+        mute_channel1: bool = False,
+        mute_channel2: bool = False,
+    ):
+        """
+        ident     : attdev-1
+        strobepin : 6
+        datainpin : 5
+        dataoutpin: -1
+        cspin     : 4
+        mutepin   : 7
+        zcenpin   : -1
+        """
+
+        self.activate_attenuator()
+        hardware_possible_db = np.arange(-95.5, 32.0, 0.5)
+        byte_number = np.arange(1, 256)
+        byte_number_db1 = byte_number[hardware_possible_db == db_channel1][0]
+        binary_db1 = np.binary_repr(byte_number_db1, width=8)
+        byte_number_db2 = byte_number[hardware_possible_db == db_channel2][0]
+        binary_db2 = np.binary_repr(byte_number_db2, width=8)
+        if mute_channel1:
+            log.info("Muting channel one")
+            binary_db1 = "00000000"
+        if mute_channel2:
+            log.info("Muting channel one")
+            binary_db2 = "00000000"
+
+        channels_db = binary_db1 + binary_db2
+        self.write_bit(channel=4, bit=0)
+        for b in channels_db:
+            self.write_bit(channel=5, bit=int(b))
+            time.time_ns()
+            self.write_bit(channel=6, bit=1)
+            time.time_ns()
+            self.write_bit(channel=6, bit=0)
+            time.time_ns()
+        self.write_bit(channel=4, bit=1)
+
+    def activate_attenuator(self):
+        for ch, b in zip([4, 5, 6, 7], [1, 0, 0, 1]):
+            self.write_bit(channel=ch, bit=b)
+
+    def deactivate_attenuator(self):
+        # mute should be enabled for starting calibration
+        self.write_bit(channel=7, bit=0)
+
+
+if __name__ == "__main__":
+    SAMPLERATE = 40_000.0
+    DURATION = 5
+    AMPLITUDE = 1
+    SINFREQ = 1
+
+    att = Attenuator()
+    # att.set_attenuation_level(db_channel1=5, db_channel2=5)
+
+    att.check_attenuator()