Merge pull request #26 from mbientlab/usb_perf_rebase

usb: performance enhancement.

examples/acc_threshold_detector.py

@@ -8,7 +8,7 @@
 print("Searching for device...")
 d = MetaWear(sys.argv[1])
 d.connect()
-print("Connected to " + d.address)
+print("Connected to " + d.address + " over " + ("USB" if d.usb.is_connected else "BLE"))
 print("Configuring device")
 libmetawear.mbl_mw_settings_set_connection_parameters(d.board, 7.5, 7.5, 0, 6000)
 sleep(1.0)

examples/anonymous_datasignals.py

@@ -14,7 +14,7 @@
 # connect
 metawear = MetaWear(sys.argv[1])
 metawear.connect()
-print("Connected")
+print("Connected to " + metawear.address + " over " + ("USB" if metawear.usb.is_connected else "BLE"))
 
 # setup
 e = Event()

examples/calibrate.py

@@ -10,7 +10,7 @@
 # connect
 device = MetaWear(sys.argv[1])
 device.connect()
-print("Connected")
+print("Connected to " + device.address + " over " + ("USB" if device.usb.is_connected else "BLE"))
 
 # event
 e = Event()

examples/data_fuser.py

@@ -65,7 +65,7 @@ def start(self):
 for i in range(len(argv) - 1):
     d = MetaWear(argv[i + 1])
     d.connect()
-    print("Connected to " + d.address)
+    print("Connected to " + d.address + " over " + ("USB" if d.usb.is_connected else "BLE"))
     states.append(State(d))
 
 # configure

examples/data_processor.py

@@ -47,7 +47,7 @@ def start(self):
 for i in range(len(argv) - 1):
     d = MetaWear(argv[i + 1])
     d.connect()
-    print("Connected to " + d.address)
+    print("Connected to " + d.address + " over " + ("USB" if d.usb.is_connected else "BLE"))
     states.append(State(d))
 
 # configure

examples/firmware_build.py

@@ -10,7 +10,7 @@
 # connect
 m = MetaWear(sys.argv[1])
 m.connect()
-print("Connected")
+print("Connected to " + m.address + " over " + ("USB" if m.usb.is_connected else "BLE"))
 
 # get board info
 size = c_uint(0)

examples/full_reset.py

@@ -9,7 +9,7 @@
 # connect
 device = MetaWear(sys.argv[1])
 device.connect()
-print("Connected")
+print("Connected to " + device.address + " over " + ("USB" if device.usb.is_connected else "BLE"))
 
 # stop logging
 libmetawear.mbl_mw_logging_stop(device.board)

examples/led.py

@@ -10,7 +10,7 @@
 # connect
 device = MetaWear(sys.argv[1])
 device.connect()
-print("Connected")
+print("Connected to " + device.address + " over " + ("USB" if device.usb.is_connected else "BLE"))
 
 # create led pattern
 pattern= LedPattern(repeat_count= Const.LED_REPEAT_INDEFINITELY)

examples/led_dongle.py

@@ -11,7 +11,7 @@
 # Add hci_mac to the setup to specify which dongle to use
 device = MetaWear(sys.argv[1], hci_mac="B8:27:EB:F2:61:2E")
 device.connect()
-print("Connected")
+print("Connected to " + device.address + " over " + ("USB" if device.usb.is_connected else "BLE"))
 
 # create led pattern
 pattern= LedPattern(repeat_count= Const.LED_REPEAT_INDEFINITELY)

examples/led_temp.py

@@ -10,7 +10,7 @@
 # connect
 device = MetaWear(sys.argv[1])
 device.connect()
-print("Connected")
+print("Connected to " + device.address + " over " + ("USB" if device.usb.is_connected else "BLE"))
 
 # create led pattern
 pattern= LedPattern(repeat_count= Const.LED_REPEAT_INDEFINITELY)

examples/log_acc.py

@@ -10,7 +10,7 @@
 print("Searching for device...")
 d = MetaWear(sys.argv[1])
 d.connect()
-print("Connected to " + d.address)
+print("Connected to " + d.address + " over " + ("USB" if d.usb.is_connected else "BLE"))
 
 print("Configuring device")
 

examples/log_acc_perf.py

@@ -10,7 +10,7 @@
 print("Searching for device...")
 d = MetaWear(sys.argv[1])
 d.connect()
-print("Connected to " + d.address)
+print("Connected to " + d.address + " over " + ("USB" if d.usb.is_connected else "BLE"))
 
 print("Configuring device")
 

examples/log_download.py

@@ -14,7 +14,7 @@
 # connect
 metawear = MetaWear(sys.argv[1])
 metawear.connect()
-print("Connected")
+print("Connected to " + metawear.address + " over " + ("USB" if metawear.usb.is_connected else "BLE"))
 
 # setup
 e = Event()

examples/log_temp.py

@@ -11,7 +11,7 @@
 print("Searching for device...")
 d = MetaWear(sys.argv[1])
 d.connect()
-print("Connected to " + d.address)
+print("Connected to " + d.address + " over " + ("USB" if d.usb.is_connected else "BLE"))
 
 try:
     # setup events

examples/macro_remove.py

@@ -13,7 +13,7 @@
 # connect
 device = MetaWear(sys.argv[1])
 device.connect()
-print("Connected to " + device.address)
+print("Connected to " + device.address + " over " + ("USB" if device.usb.is_connected else "BLE"))
 sleep(1.0)
 
 # remove macros    

examples/macro_setup.py

@@ -13,7 +13,7 @@
 
 # connect
 device.connect()
-print("Connected to " + device.address)
+print("Connected to " + device.address + " over " + ("USB" if device.usb.is_connected else "BLE"))
 
 # setup events
 e = Event()

examples/motion_record_log.py

@@ -40,7 +40,7 @@ def wont_be_used():
 for i in range(len(sys.argv) - 1):
     d = MetaWear(sys.argv[i + 1])
     d.connect()
-    print("Connected to " + d.address)
+    print("Connected to " + d.address + " over " + ("USB" if d.usb.is_connected else "BLE"))
     states.append(State(d))
 
 # configure

examples/motion_record_log_no_reset.py

@@ -41,7 +41,7 @@ def wont_be_used():
 for i in range(len(sys.argv) - 1):
     d = MetaWear(sys.argv[i + 1])
     d.connect()
-    print("Connected to " + d.address)
+    print("Connected to " + d.address + " over " + ("USB" if d.usb.is_connected else "BLE"))
     states.append(State(d))
 
 for s in states:

examples/motion_record_stream.py

@@ -42,7 +42,7 @@ def passthrough_created(self, context, signal):
 for i in range(len(sys.argv) - 1):
     d = MetaWear(sys.argv[i + 1])
     d.connect()
-    print("Connected to " + d.address)
+    print("Connected to " + d.address + " over " + ("USB" if d.usb.is_connected else "BLE"))
     states.append(State(d))
 
 # configure

examples/scan_connect.py

@@ -37,7 +37,7 @@ def handler(result):
 device = MetaWear(address)
 device.connect()
 
-print("Connected")
+print("Connected to " + device.address + " over " + ("USB" if device.usb.is_connected else "BLE"))
 print("Device information: " + str(device.info))
 sleep(5.0)
 

examples/stream_acc.py

@@ -27,7 +27,7 @@ def data_handler(self, ctx, data):
 for i in range(len(sys.argv) - 1):
     d = MetaWear(sys.argv[i + 1])
     d.connect()
-    print("Connected to " + d.address)
+    print("Connected to " + d.address + " over " + ("USB" if d.usb.is_connected else "BLE"))
     states.append(State(d))
 
 # configure

examples/stream_acc_gyro_bmi160.py

@@ -35,7 +35,7 @@ def gyro_data_handler(self, ctx, data):
 for i in range(len(sys.argv) - 1):
     d = MetaWear(sys.argv[i + 1])
     d.connect()
-    print("Connected to " + d.address)
+    print("Connected to " + d.address + " over " + ("USB" if d.usb.is_connected else "BLE"))
     states.append(State(d))
 
 # configure all metawears

examples/stream_acc_gyro_bmi270.py

@@ -35,7 +35,7 @@ def gyro_data_handler(self, ctx, data):
 for i in range(len(sys.argv) - 1):
     d = MetaWear(sys.argv[i + 1])
     d.connect()
-    print("Connected to " + d.address)
+    print("Connected to " + d.address + " over " + ("USB" if d.usb.is_connected else "BLE"))
     states.append(State(d))
 
 # configure

examples/stream_acc_packed.py

@@ -30,7 +30,7 @@ def acc_data_handler(self, ctx, data):
 for i in range(len(sys.argv) - 1):
     d = MetaWear(sys.argv[i + 1])
     d.connect()
-    print("Connected to " + d.address)
+    print("Connected to " + d.address + " over " + ("USB" if d.usb.is_connected else "BLE"))
     states.append(State(d))
 
 # configure

examples/stream_acc_x.py

@@ -28,7 +28,7 @@ def data_handler(self, ctx, data):
 for i in range(len(sys.argv) - 1):
     d = MetaWear(sys.argv[i + 1])
     d.connect()
-    print("Connected to " + d.address)
+    print("Connected to " + d.address + " over " + ("USB" if d.usb.is_connected else "BLE"))
     states.append(State(d))
 
 # configure

examples/stream_gyro_packed.py

@@ -31,7 +31,7 @@ def gyro_data_handler(self, ctx, data):
 for i in range(len(sys.argv) - 1):
     d = MetaWear(sys.argv[i + 1])
     d.connect()
-    print("Connected to " + d.address)
+    print("Connected to " + d.address + " over " + ("USB" if d.usb.is_connected else "BLE"))
     states.append(State(d))
 
 # configure

examples/stream_mag.py

@@ -0,0 +1,69 @@
+# usage: python3 stream_mag.py [mac1] [mac2] ... [mac(n)]
+from __future__ import print_function
+from mbientlab.metawear import MetaWear, libmetawear, parse_value
+from mbientlab.metawear.cbindings import *
+from time import sleep
+from threading import Event
+
+import platform
+import sys
+
+if sys.version_info[0] == 2:
+    range = xrange
+
+class State:
+    # init
+    def __init__(self, device):
+        self.device = device
+        self.samples = 0
+        self.magCallback = FnVoid_VoidP_DataP(self.mag_data_handler)
+
+    # mag callback
+    def mag_data_handler(self, ctx, data):
+        print("MAG: %s -> %s" % (self.device.address, parse_value(data)))
+        self.samples+= 1
+
+states = []
+
+# connect
+for i in range(len(sys.argv) - 1):
+    d = MetaWear(sys.argv[i + 1])
+    d.connect()
+    print("Connected to %s over %s" % (d.address, "USB" if d.usb.is_connected else "BLE"))
+    states.append(State(d))
+
+# configure
+for s in states:
+    print("Configuring device")
+    libmetawear.mbl_mw_settings_set_connection_parameters(s.device.board, 7.5, 7.5, 0, 6000)
+    sleep(1.5)
+
+    # setup mag
+    libmetawear.mbl_mw_mag_bmm150_stop(s.device.board)
+    libmetawear.mbl_mw_mag_bmm150_set_preset(s.device.board, MagBmm150Preset.REGULAR)
+
+    # get mag and subscribe
+    mag = libmetawear.mbl_mw_mag_bmm150_get_b_field_data_signal(s.device.board)
+    libmetawear.mbl_mw_datasignal_subscribe(mag, None, s.magCallback)
+
+    # start mag
+    libmetawear.mbl_mw_mag_bmm150_enable_b_field_sampling(s.device.board)
+    libmetawear.mbl_mw_mag_bmm150_start(s.device.board)
+
+# sleep
+sleep(10.0)
+
+# stop
+for s in states:
+    libmetawear.mbl_mw_mag_bmm150_stop(s.device.board)
+    libmetawear.mbl_mw_mag_bmm150_disable_b_field_sampling(s.device.board)
+
+    mag = libmetawear.mbl_mw_mag_bmm150_get_b_field_data_signal(s.device.board)
+    libmetawear.mbl_mw_datasignal_unsubscribe(mag)
+
+    libmetawear.mbl_mw_debug_disconnect(s.device.board)
+
+# recap
+print("Total Samples Received")
+for s in states:
+    print("%s -> %d" % (s.device.address, s.samples))

examples/stream_quat.py

@@ -27,7 +27,7 @@ def data_handler(self, ctx, data):
 for i in range(len(sys.argv) - 1):
     d = MetaWear(sys.argv[i + 1])
     d.connect()
-    print("Connected to " + d.address)
+    print("Connected to " + d.address + " over " + ("USB" if d.usb.is_connected else "BLE"))
     states.append(State(d))
 
 # configure

examples/stream_temp.py

@@ -13,7 +13,7 @@
 
 # connect to macc
 d.connect()
-print("Connected to " + d.address)
+print("Connected to " + d.address + " over " + ("USB" if d.usb.is_connected else "BLE"))
 e = Event()
 
 # create callback

mbientlab/metawear/metawear.py

@@ -58,6 +58,10 @@ class MetaWearUSB(object):
     GATT_MW_CHAR_COMMAND =      '326a9001-85cb-9195-d9dd-464cfbbae75a'
     GATT_MW_CHAR_NOTIFICATION = '326a9006-85cb-9195-d9dd-464cfbbae75a'
 
+    SERIAL_XFER_SIZE =          1024
+    SERIAL_BYTE_START =         b'\x1f'
+    SERIAL_BYTE_STOP =          b'\n'
+
     @staticmethod
     def scan():
         """List MetaWear devices attached to USB"""
@@ -202,10 +206,10 @@ def _bin_cmd_decode(self, c):
             elif self._cmd_recv_len < self._cmd_len:
                 self._cmd_recv_len += 1
                 self._cmd_buffer += c
-            elif c == b'\n':
+            elif c == MetaWearUSB.SERIAL_BYTE_STOP:
                 self._cmd_started = False
                 return self._cmd_buffer
-        elif c == b'\x1f':
+        elif c == MetaWearUSB.SERIAL_BYTE_START:
             self._cmd_started = True
             self._cmd_len = 0
             self._cmd_recv_len = 0
@@ -217,18 +221,20 @@ def _read_poller(self):
         self._cmd_started = False
         while self._read_poll:
             try:
-                c = self.ser.read()
+                read_len = max(1, min(MetaWearUSB.SERIAL_XFER_SIZE, self.ser.in_waiting))
+                line_bytes = self.ser.read(read_len)
             except serial.SerialException:
                 self._read_poll = False
                 self.disconnect()
                 return
 
-            if len(c) < 1:
+            if len(line_bytes) < 1:
                 continue
-            cmd = self._bin_cmd_decode(c)
-            if len(cmd) > 0:
-                if self._notify_handler is not None:
-                    self._notify_handler(cmd)
+            for i in range(len(line_bytes)):
+                cmd = self._bin_cmd_decode(line_bytes[i:i+1])
+                if len(cmd) > 0:
+                    if self._notify_handler is not None:
+                        self._notify_handler(cmd)
 
     def _write_poller(self):
         """Write poller enabling async writes and write response callbacks."""

setup.py

@@ -67,7 +67,7 @@ def run(self):
 setup(
     name='metawear',
     packages=['mbientlab', 'mbientlab.metawear'],
-    version='1.0.6',
+    version='1.0.7',
     description='Python bindings for the MetaWear C++ SDK by MbientLab',
     long_description=open(os.path.join(os.path.dirname(__file__), "README.rst")).read(),
     package_data={'mbientlab.metawear': so_pkg_data},