Adding bit resolution with lsl stream

Author: PayalLakra

chordspy/chords_serial.py

@@ -41,19 +41,19 @@ class Chords_USB:
 
     # Supported boards with their sampling rate and Number of Channels
     supported_boards = {
-        "UNO-R3": {"sampling_rate": 250, "Num_channels": 6},
-        "UNO-CLONE": {"sampling_rate": 250, "Num_channels": 6},
-        "GENUINO-UNO": {"sampling_rate": 250, "Num_channels": 6},
-        "UNO-R4": {"sampling_rate": 500, "Num_channels": 6},
-        "RPI-PICO-RP2040": {"sampling_rate": 500, "Num_channels": 3},
-        "NANO-CLONE": {"sampling_rate": 250, "Num_channels": 8},
-        "NANO-CLASSIC": {"sampling_rate": 250, "Num_channels": 8},
-        "STM32F4-BLACK-PILL": {"sampling_rate": 500, "Num_channels": 8},
-        "STM32G4-CORE-BOARD": {"sampling_rate": 500, "Num_channels": 16},
-        "MEGA-2560-R3": {"sampling_rate": 250, "Num_channels": 16},
-        "MEGA-2560-CLONE": {"sampling_rate": 250, "Num_channels": 16},
-        "GIGA-R1": {"sampling_rate": 500, "Num_channels": 6},
-        "NPG-LITE": {"sampling_rate": 500, "Num_channels": 3},
+        "UNO-R3": {"sampling_rate": 250, "Num_channels": 6, "resolution": 10},
+        "UNO-CLONE": {"sampling_rate": 250, "Num_channels": 6, "resolution": 10},
+        "GENUINO-UNO": {"sampling_rate": 250, "Num_channels": 6, "resolution": 10},
+        "UNO-R4": {"sampling_rate": 500, "Num_channels": 6, "resolution": 14},
+        "RPI-PICO-RP2040": {"sampling_rate": 500, "Num_channels": 3, "resolution": 12},
+        "NANO-CLONE": {"sampling_rate": 250, "Num_channels": 8, "resolution": 10},
+        "NANO-CLASSIC": {"sampling_rate": 250, "Num_channels": 8, "resolution": 10},
+        "STM32F4-BLACK-PILL": {"sampling_rate": 500, "Num_channels": 8, "resolution": 12},
+        "STM32G4-CORE-BOARD": {"sampling_rate": 500, "Num_channels": 16, "resolution": 12},
+        "MEGA-2560-R3": {"sampling_rate": 250, "Num_channels": 16, "resolution": 10},
+        "MEGA-2560-CLONE": {"sampling_rate": 250, "Num_channels": 16, "resolution": 10},
+        "GIGA-R1": {"sampling_rate": 500, "Num_channels": 6, "resolution": 16},
+        "NPG-LITE": {"sampling_rate": 500, "Num_channels": 3, "resolution": 12},
     }
 
     def __init__(self):

chordspy/connection.py

@@ -61,6 +61,7 @@ def __init__(self):
         self.stream_type = "EXG"                   # LSL stream type
         self.stream_format = "float32"             # Data format for LSL samples
         self.stream_id = "UDL"                     # Unique stream identifier
+        self.resolution = 12                       # Resolution bit for stream
 
         # Data Tracking Systems
         self.last_sample = None                    # Stores the most recent sample received
@@ -131,8 +132,15 @@ def setup_lsl(self, num_channels, sampling_rate):
         """
         # Create LSL stream info with configured parameters
         info = StreamInfo(self.stream_name, self.stream_type, num_channels, sampling_rate, self.stream_format, self.stream_id)
-        self.lsl_connection = StreamOutlet(info)   # Initialize LSL outlet
-        print(f"LSL stream started: {num_channels} channels at {sampling_rate}Hz")
+        
+        # Add resolution information to the stream description
+        desc = info.desc()
+        resinfo = desc.append_child("resinfo")
+        resolution = getattr(self, 'resolution', 12)
+        resinfo.append_child_value("resolution", str(resolution))
+        
+        self.lsl_connection = StreamOutlet(info)
+        print(f"LSL stream started: {num_channels} channels at {sampling_rate}Hz with {resolution}-bit resolution")
         self.stream_active = True
         self.num_channels = num_channels
         self.sampling_rate = sampling_rate
@@ -539,6 +547,9 @@ def connect_usb(self):
         board_config = self.usb_connection.supported_boards[self.usb_connection.board]
         self.sampling_rate = board_config["sampling_rate"]
 
+        # Get resolution from board config (with fallback to 12)
+        self.resolution = board_config.get("resolution", 12)
+        
         # Initialize LSL stream
         self.setup_lsl(self.num_channels, self.sampling_rate)