viszualizers and digital output

apply_stimulation/apply_stimulation.ino

@@ -1,26 +1,46 @@
 #include <avr/pgmspace.h>
 #include "stimulation_pattern.h"
 
-const int stimulationPin = 5;
+const bool DEBUG = true; // Set to true to enable serial output
-const int delayBetweenStimulations = 10; // milliseconds
+const bool USE_DIGITAL = true; // Set to false to use analog output
+const int stimulationPin = 5; // PWM-capable pin
+const unsigned long delayBetweenStimulations = 1000; // microseconds (1ms delay for more stable serial transmission)
+const int threshold = 50; // Threshold for converting analog to digital
 
 void setup() {
   pinMode(stimulationPin, OUTPUT);
-  Serial.begin(9600);
+  Serial.begin(115200); // Increased baud rate for faster output
+}
+
+// Function to convert analog value to digital
+bool analogToDigital(uint8_t analogValue) {
+  return analogValue >= threshold;
+}
+
+// Function to write output (digital or analog)
+void writeOutput(uint8_t value) {
+  if (USE_DIGITAL) {
+    digitalWrite(stimulationPin, analogToDigital(value) ? HIGH : LOW);
+  } else {
+    analogWrite(stimulationPin, value);
+  }
 }
 
 void loop() {
   for (uint16_t i = 0; i < PATTERN_SIZE; i++) {
     uint8_t stimulationValue = pgm_read_byte(&stimulation_pattern[i]);
-    analogWrite(stimulationPin, stimulationValue);
     
-    // Print the current stimulation value for debugging
+    writeOutput(stimulationValue);
-    Serial.print("Applying stimulation: ");
-    Serial.println(stimulationValue);
     
-    delay(delayBetweenStimulations);
+    // Print the value based on the mode
+    if (USE_DIGITAL) {
+      Serial.println(analogToDigital(stimulationValue) ? 255 : 0);
+    } else {
+      Serial.println(stimulationValue);
+    }
+    
+    delayMicroseconds(delayBetweenStimulations);
   }
   
-  // Add a longer delay at the end of each complete pattern
+  // Remove the long delay at the end to continuously send data
-  delay(1000);
 }

decode_serial_digit.py

@@ -0,0 +1,102 @@
+import serial
+import numpy as np
+import matplotlib.pyplot as plt
+from serial.tools import list_ports
+import time
+import sys
+
+# Serial port configuration
+DEFAULT_PORT = 'COM20'
+BAUD_RATE = 115200
+TIMEOUT = 5  # 5 seconds timeout
+
+# MNIST digit size
+DIGIT_SIZE = 28
+
+def find_arduino_port():
+    ports = list_ports.comports()
+    for port in ports:
+        if 'Arduino' in port.description:
+            return port.device
+    return None
+
+def read_serial_data(port, baud_rate, timeout):
+    try:
+        with serial.Serial(port, baud_rate, timeout=timeout) as ser:
+            print(f"Connected to {port}")
+            data = []
+            start_time = time.time()
+            while len(data) < DIGIT_SIZE * DIGIT_SIZE:
+                if time.time() - start_time > timeout:
+                    print("Timeout: No data received for 5 seconds.")
+                    break
+                try:
+                    line = ser.readline().decode('ascii').strip()
+                    if line:
+                        value = int(line)
+                        if 0 <= value <= 255:  # Ensure value is in valid range
+                            data.append(value)
+                            start_time = time.time()  # Reset the timeout
+                        else:
+                            print(f"Warning: Received out-of-range value: {value}. Skipping.")
+                except (UnicodeDecodeError, ValueError) as e:
+                    print(f"Received invalid data: {e}. Skipping.")
+        return np.array(data)
+    except serial.SerialException as e:
+        print(f"Error opening serial port {port}: {e}")
+        return np.array([])
+
+def plot_digit(data):
+    if len(data) < DIGIT_SIZE * DIGIT_SIZE:
+        print(f"Warning: Received only {len(data)} data points. Padding with zeros.")
+        data = np.pad(data, (0, DIGIT_SIZE * DIGIT_SIZE - len(data)), 'constant')
+    
+    digit = data.reshape(DIGIT_SIZE, DIGIT_SIZE)
+    
+    # Create a larger figure (doubled size)
+    plt.figure(figsize=(10, 10))
+    plt.imshow(digit, cmap='gray', interpolation='nearest')
+    plt.title("Decoded Digit", fontsize=24)
+    plt.axis('off')
+    
+    # Add text annotations for each pixel value
+    for i in range(DIGIT_SIZE):
+        for j in range(DIGIT_SIZE):
+            value = digit[i, j]
+            plt.text(j, i, f'{value}', ha='center', va='center', color='red', fontsize=6)
+    
+    plt.tight_layout()
+    plt.show()
+
+def main():
+    port = DEFAULT_PORT
+    if not serial.tools.list_ports.comports(include_links=False):
+        print("No serial ports found. Please check your connections.")
+        return
+
+    if DEFAULT_PORT not in [p.device for p in serial.tools.list_ports.comports()]:
+        print(f"Warning: {DEFAULT_PORT} not found. Attempting to find Arduino port.")
+        port = find_arduino_port()
+        if not port:
+            print("Arduino not found. Please specify the COM port manually.")
+            return
+
+    print("Reading data from serial port...")
+    data = read_serial_data(port, BAUD_RATE, TIMEOUT)
+    
+    if len(data) > 0:
+        print(f"Received {len(data)} data points. Plotting digit...")
+        plot_digit(data)
+    else:
+        print("No data received. Please check the Arduino connection and code.")
+
+if __name__ == "__main__":
+    try:
+        main()
+    except KeyboardInterrupt:
+        print("\nScript terminated by user.")
+    except Exception as e:
+        print(f"An unexpected error occurred: {e}")
+    finally:
+        print("Script execution completed.")
+        sys.exit(0)

stimulation_pattern.h

@@ -0,0 +1,2 @@
+const PROGMEM uint8_t stimulation_pattern[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 55, 148, 209, 253, 253, 113, 87, 148, 55, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 87, 232, 252, 253, 189, 209, 252, 252, 253, 168, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 57, 242, 252, 190, 65, 5, 12, 182, 252, 253, 116, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 96, 252, 252, 183, 14, 0, 0, 92, 252, 252, 225, 21, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 132, 253, 252, 145, 14, 0, 0, 0, 215, 252, 252, 79, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 126, 253, 246, 176, 9, 0, 0, 8, 78, 245, 253, 129, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 16, 232, 252, 176, 0, 0, 0, 36, 201, 252, 252, 169, 11, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 22, 252, 252, 30, 22, 119, 197, 241, 253, 252, 250, 77, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 16, 231, 252, 253, 252, 252, 252, 226, 227, 252, 231, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 55, 234, 253, 217, 137, 42, 24, 192, 252, 143, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 61, 255, 253, 109, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 71, 253, 252, 21, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 253, 252, 21, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 71, 253, 252, 21, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 106, 253, 252, 21, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 45, 255, 253, 21, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 218, 252, 56, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 96, 252, 189, 42, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 14, 184, 252, 169, 11, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 14, 146, 252, 42, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+const uint16_t PATTERN_SIZE = 784;

visualize_digit.py

@@ -0,0 +1,23 @@
+def visualize_digit(pattern):
+    # Define ASCII characters for different intensity levels
+    chars = ' .:-=+*#%@'
+    
+    # Convert the pattern to a 28x28 grid
+    grid = [pattern[i:i+28] for i in range(0, len(pattern), 28)]
+    
+    # Create the visualization
+    visualization = ''
+    for row in grid:
+        for pixel in row:
+            # Map the pixel value (0-255) to an ASCII character
+            char_index = min(int(pixel / 28), 9)
+            visualization += chars[char_index]
+        visualization += '\n'
+    
+    return visualization
+
+# The stimulation pattern from stimulation_pattern.h
+stimulation_pattern = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 55, 148, 209, 253, 253, 113, 87, 148, 55, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 87, 232, 252, 253, 189, 209, 252, 252, 253, 168, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 57, 242, 252, 190, 65, 5, 12, 182, 252, 253, 116, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 96, 252, 252, 183, 14, 0, 0, 92, 252, 252, 225, 21, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 132, 253, 252, 145, 14, 0, 0, 0, 215, 252, 252, 79, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 126, 253, 246, 176, 9, 0, 0, 8, 78, 245, 253, 129, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 16, 232, 252, 176, 0, 0, 0, 36, 201, 252, 252, 169, 11, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 22, 252, 252, 30, 22, 119, 197, 241, 253, 252, 250, 77, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 16, 231, 252, 253, 252, 252, 252, 226, 227, 252, 231, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 55, 234, 253, 217, 137, 42, 24, 192, 252, 143, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 61, 255, 253, 109, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 71, 253, 252, 21, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 253, 252, 21, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 71, 253, 252, 21, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 106, 253, 252, 21, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 45, 255, 253, 21, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 218, 252, 56, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 96, 252, 189, 42, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 14, 184, 252, 169, 11, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 14, 146, 252, 42, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
+
+# Visualize the digit
+print(visualize_digit(stimulation_pattern))