Initial commit of support for multi-pseudoclock PrawnBlaster.

I have not yet fully implemented waits in the blacs_worker yet!

labscript_devices/PrawnBlaster/__init__.py

@@ -0,0 +1,19 @@
+#####################################################################
+#                                                                   #
+# /labscript_devices/PrawnBlaster/__init__.py                       #
+#                                                                   #
+# Copyright 2021, Philip Starkey                                    #
+#                                                                   #
+# This file is part of labscript_devices, in the labscript suite    #
+# (see http://labscriptsuite.org), and is licensed under the        #
+# Simplified BSD License. See the license.txt file in the root of   #
+# the project for the full license.                                 #
+#                                                                   #
+#####################################################################
+from labscript_devices import deprecated_import_alias
+
+
+# For backwards compatibility with old experiment scripts:
+PrawnBlaster = deprecated_import_alias(
+    "labscript_devices.PrawnBlaster.labscript_devices.PrawnBlaster"
+)

labscript_devices/PrawnBlaster/blacs_tabs.py

@@ -0,0 +1,127 @@
+#####################################################################
+#                                                                   #
+# /labscript_devices/PrawnBlaster/blacs_tab.py                      #
+#                                                                   #
+# Copyright 2021, Philip Starkey                                    #
+#                                                                   #
+# This file is part of labscript_devices, in the labscript suite    #
+# (see http://labscriptsuite.org), and is licensed under the        #
+# Simplified BSD License. See the license.txt file in the root of   #
+# the project for the full license.                                 #
+#                                                                   #
+#####################################################################
+from blacs.device_base_class import (
+    DeviceTab,
+    define_state,
+    MODE_BUFFERED,
+    MODE_MANUAL,
+    MODE_TRANSITION_TO_BUFFERED,
+    MODE_TRANSITION_TO_MANUAL,
+)
+import labscript_utils.properties
+
+from qtutils.qt import QtWidgets
+
+
+class PrawnBlasterTab(DeviceTab):
+    def initialise_GUI(self):
+        self.connection_table_properties = (
+            self.settings["connection_table"].find_by_name(self.device_name).properties
+        )
+
+        digital_outs = {}
+        for pin in self.connection_table_properties["out_pins"]:
+            digital_outs[f"GPIO {pin:02d}"] = {}
+
+        # Create a single digital output
+        self.create_digital_outputs(digital_outs)
+        # Create widgets for output objects
+        _, _, do_widgets = self.auto_create_widgets()
+        # and auto place the widgets in the UI
+        self.auto_place_widgets(("Flags", do_widgets))
+
+        # Create status labels
+        self.status_label = QtWidgets.QLabel("Status: Unknown")
+        self.clock_status_label = QtWidgets.QLabel("Clock status: Unknown")
+        self.get_tab_layout().addWidget(self.status_label)
+        self.get_tab_layout().addWidget(self.clock_status_label)
+
+        # Set the capabilities of this device
+        self.supports_smart_programming(True)
+
+        # Create status monitor timout
+        self.statemachine_timeout_add(2000, self.status_monitor)
+
+    def get_child_from_connection_table(self, parent_device_name, port):
+        # Pass down channel name search to the pseudoclocks (so we can find the
+        # clocklines)
+        if parent_device_name == self.device_name:
+            device = self.connection_table.find_by_name(self.device_name)
+
+            for pseudoclock_name, pseudoclock in device.child_list.items():
+                for child_name, child in pseudoclock.child_list.items():
+                    # store a reference to the internal clockline
+                    if child.parent_port == port:
+                        return DeviceTab.get_child_from_connection_table(
+                            self, pseudoclock.name, port
+                        )
+
+        return None
+
+    def initialise_workers(self):
+        # Find the COM port to be used
+        com_port = str(
+            self.settings["connection_table"]
+            .find_by_name(self.device_name)
+            .BLACS_connection
+        )
+
+        worker_initialisation_kwargs = {
+            "com_port": com_port,
+            "num_pseudoclocks": self.connection_table_properties["num_pseudoclocks"],
+            "out_pins": self.connection_table_properties["out_pins"],
+            "in_pins": self.connection_table_properties["in_pins"],
+        }
+        self.create_worker(
+            "main_worker",
+            "labscript_devices.PrawnBlaster.blacs_workers.PrawnBlasterWorker",
+            worker_initialisation_kwargs,
+        )
+        self.primary_worker = "main_worker"
+
+    @define_state(
+        MODE_MANUAL
+        | MODE_BUFFERED
+        | MODE_TRANSITION_TO_BUFFERED
+        | MODE_TRANSITION_TO_MANUAL,
+        True,
+    )
+    def status_monitor(self, notify_queue=None):
+        # When called with a queue, this function writes to the queue
+        # when the pulseblaster is waiting. This indicates the end of
+        # an experimental run.
+        status, clock_status, waits_pending = yield (
+            self.queue_work(self.primary_worker, "check_status")
+        )
+
+        # Manual mode or aborted
+        done_condition = status == 0 or status == 5
+
+        # Update GUI status/clock status widgets
+        self.status_label.setText(f"Status: {status}")
+        self.clock_status_label.setText(f"Clock status: {clock_status}")
+
+        if notify_queue is not None and done_condition and not waits_pending:
+            # Experiment is over. Tell the queue manager about it, then
+            # set the status checking timeout back to every 2 seconds
+            # with no queue.
+            notify_queue.put("done")
+            self.statemachine_timeout_remove(self.status_monitor)
+            self.statemachine_timeout_add(2000, self.status_monitor)
+
+    @define_state(MODE_BUFFERED, True)
+    def start_run(self, notify_queue):
+        self.statemachine_timeout_remove(self.status_monitor)
+        yield (self.queue_work(self.primary_worker, "start_run"))
+        self.status_monitor()
+        self.statemachine_timeout_add(100, self.status_monitor, notify_queue)

labscript_devices/PrawnBlaster/blacs_workers.py

@@ -0,0 +1,206 @@
+#####################################################################
+#                                                                   #
+# /labscript_devices/PrawnBlaster/blacs_worker.py                   #
+#                                                                   #
+# Copyright 2021, Philip Starkey                                    #
+#                                                                   #
+# This file is part of labscript_devices, in the labscript suite    #
+# (see http://labscriptsuite.org), and is licensed under the        #
+# Simplified BSD License. See the license.txt file in the root of   #
+# the project for the full license.                                 #
+#                                                                   #
+#####################################################################
+import time
+import labscript_utils.h5_lock
+import h5py
+from blacs.tab_base_classes import Worker
+import labscript_utils.properties as properties
+
+
+class PrawnBlasterWorker(Worker):
+    def init(self):
+        # fmt: off
+        global h5py; import labscript_utils.h5_lock, h5py
+        global serial; import serial
+        global time; import time
+        global re; import re
+        self.smart_cache = {}
+        self.cached_pll_params = {}
+        # fmt: on
+
+        self.prawnblaster = serial.Serial(self.com_port, 115200, timeout=1)
+        self.check_status()
+
+        # configure number of pseudoclocks
+        self.prawnblaster.write(b"setnumpseudoclocks %d\r\n" % self.num_pseudoclocks)
+        assert self.prawnblaster.readline().decode() == "ok\r\n"
+
+        # Configure pins
+        for i, (out_pin, in_pin) in enumerate(zip(self.out_pins, self.in_pins)):
+            self.prawnblaster.write(b"setoutpin %d %d\r\n" % (i, out_pin))
+            assert self.prawnblaster.readline().decode() == "ok\r\n"
+            self.prawnblaster.write(b"setinpin %d %d\r\n" % (i, in_pin))
+            assert self.prawnblaster.readline().decode() == "ok\r\n"
+
+    def check_status(self):
+        self.prawnblaster.write(b"status\r\n")
+        response = self.prawnblaster.readline().decode()
+        match = re.match(r"run-status:(\d) clock-status:(\d)(\r\n)?", response)
+        if match:
+            return int(match.group(1)), int(match.group(2)), False
+        elif response:
+            raise Exception(
+                f"PrawnBlaster is confused: saying '{response}' instead of 'run-status:<int> clock-status:<int>'"
+            )
+        else:
+            raise Exception(
+                f"PrawnBlaster is returning a invalid status '{response}'. Maybe it needs a reboot."
+            )
+
+    def program_manual(self, values):
+        for channel, value in values.items():
+            pin = int(channel.split()[1])
+            pseudoclock = self.out_pins.index(pin)
+            if value:
+                self.prawnblaster.write(b"go high %d\r\n" % pseudoclock)
+            else:
+                self.prawnblaster.write(b"go low %d\r\n" % pseudoclock)
+
+            assert self.prawnblaster.readline().decode() == "ok\r\n"
+
+        return values
+
+    def transition_to_buffered(self, device_name, h5file, initial_values, fresh):
+        if fresh:
+            self.smart_cache = {}
+
+        # Get data from HDF5 file
+        pulse_programs = []
+        with h5py.File(h5file, "r") as hdf5_file:
+            group = hdf5_file[f"devices/{device_name}"]
+            for i in range(self.num_pseudoclocks):
+                pulse_programs.append(group[f"PULSE_PROGRAM_{i}"][:])
+                self.smart_cache.setdefault(i, [])
+            device_properties = labscript_utils.properties.get(
+                hdf5_file, device_name, "device_properties"
+            )
+            self.is_master_pseudoclock = device_properties["is_master_pseudoclock"]
+
+        # TODO: Configure clock from device properties
+        clock_mode = 0
+        clock_vcofreq = 0
+        clock_plldiv1 = 0
+        clock_plldiv2 = 0
+        if device_properties["external_clock_pin"] is not None:
+            if device_properties["external_clock_pin"] == 20:
+                clock_mode = 1
+            elif device_properties["external_clock_pin"] == 22:
+                clock_mode = 2
+            else:
+                raise RuntimeError(
+                    f"Invalid external clock pin {device_properties['external_clock_pin']}. Pin must be 20, 22 or None."
+                )
+        clock_frequency = device_properties["clock_frequency"]
+
+        if clock_mode == 0:
+            if clock_frequency == 100e6:
+                clock_vcofreq = 1200e6
+                clock_plldiv1 = 6
+                clock_plldiv2 = 2
+            elif clock_frequency in self.cached_pll_params:
+                pll_params = self.cached_pll_params[clock_frequency]
+                clock_vcofreq = pll_params["vcofreq"]
+                clock_plldiv1 = pll_params["plldiv1"]
+                clock_plldiv2 = pll_params["plldiv2"]
+            else:
+                self.logger.info("Calculating PLL parameters...")
+                osc_freq = 12e6
+                # Techniclally FBDIV can be 16-320 (see 2.18.2 in
+                # https://datasheets.raspberrypi.org/rp2040/rp2040-datasheet.pdf )
+                # however for a 12MHz reference clock, the range is smaller to ensure
+                # vcofreq is between 400 and 1600 MHz.
+                found = False
+                for fbdiv in range(134, 33, -1):
+                    vcofreq = osc_freq * fbdiv
+                    # PLL1 div should be greater than pll2 div if possible so we start high
+                    for pll1 in range(7, 0, -1):
+                        for pll2 in range(1, 8):
+                            if vco_freq / (pll1 * pll2) == clock_frequency:
+                                found = True
+                                clock_vcofreq = vcofreq
+                                clock_plldiv1 = pll1
+                                clock_plldiv2 = pll2
+                                pll_params = {}
+                                pll_params["vcofreq"] = clock_vcofreq
+                                pll_params["plldiv1"] = clock_plldiv1
+                                pll_params["plldiv2"] = clock_plldiv2
+                                self.cached_pll_params[clock_frequency] = pll_params
+                                break
+                        if found:
+                            break
+                    if found:
+                        break
+                if not found:
+                    raise RuntimeError(
+                        "Could not determine appropriate clock paramaters"
+                    )
+
+        # Now set the clock details
+        self.prawnblaster.write(
+            b"setclock %d %d %d %d %d\r\n"
+            % (clock_mode, clock_frequency, clock_vcofreq, clock_plldiv1, clock_plldiv2)
+        )
+        response = self.prawnblaster.readline().decode()
+        assert response == "ok\r\n", f"PrawnBlaster said '{response}', expected 'ok'"
+
+        # TODO: Save any information we need for wait monitor
+
+        # Program instructions
+        for pseudoclock, pulse_program in enumerate(pulse_programs):
+            for i, instruction in enumerate(pulse_program):
+                if i == len(self.smart_cache[pseudoclock]):
+                    # Pad the smart cache out to be as long as the program:
+                    self.smart_cache[pseudoclock].append(None)
+
+                # Only program instructions that differ from what's in the smart cache:
+                if self.smart_cache[pseudoclock][i] != instruction:
+                    self.prawnblaster.write(
+                        b"set %d %d %d %d\r\n"
+                        % (pseudoclock, i, instruction["period"], instruction["reps"])
+                    )
+                    response = self.prawnblaster.readline().decode()
+                    assert (
+                        response == "ok\r\n"
+                    ), f"PrawnBlaster said '{response}', expected 'ok'"
+                    self.smart_cache[pseudoclock][i] = instruction
+
+        # All outputs end on 0
+        final = {}
+        for pin in self.out_pins:
+            final[f"GPIO {pin:02d}"] = 0
+        return final
+
+    def start_run(self):
+        # Start in software:
+        self.logger.info("sending start")
+        self.prawnblaster.write(b"start\r\n")
+        response = self.prawnblaster.readline().decode()
+        assert response == "ok\r\n", f"PrawnBlaster said '{response}', expected 'ok'"
+
+    def transition_to_manual(self):
+        # TODO: write this
+        return True
+
+    def shutdown(self):
+        self.prawnblaster.close()
+
+    def abort_buffered(self):
+        self.prawnblaster.write(b"abort\r\n")
+        assert self.prawnblaster.readline().decode() == "ok\r\n"
+        # loop until abort complete
+        while self.check_status()[0] != 5:
+            time.sleep(0.5)
+        return True
+
+    def abort_transition_to_buffered(self):
+        return self.abort_buffered()