Upload files to 'Archiv'

Archiv/ADS_Pi_einfach.py

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+import Adafruit_ADS1x15
+
+adc = Adafruit_ADS1x15.ADS1115(address=0x48, busnum=1)
+
+binary_string = ''
+random_number = 0
+
+for i in range(1024):
+    raw_value = adc.read_adc(0, gain=1)
+    
+    lsb =(raw_value & 0x01) << i
+    
+    #binary_string= bin(lsb)[2:].zfill(32) + binary_string
+    random_number |= lsb
+
+print("Random Number:", random_number)

Archiv/Versuch.cpp

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+#include <wiringPi.h>
+#include <wiringPiI2C.h>
+
+const int adcAddr = 0x48; // ADC address
+const int serialBaudRate = 115200; // Serial monitor baud rate
+const float toggleDelay = 0.2; // Delay between toggling bits, in microseconds
+
+int main(void) {
+  int fd; // File descriptor for I2C device
+  uint32_t buffer[8] = {0}; // Initialize buffer array with zeroes
+  uint8_t bitCount = 0; // Number of generated bits
+
+  // Initialize WiringPi and open I2C device
+  wiringPiSetup();
+  fd = wiringPiI2CSetup(adcAddr);
+
+  // Print buffer values in binary format
+  for (int i = 0; i < 8; i++) {
+    uint32_t randomValue = 0; // Initialize random value
+
+    while (bitCount < 32) {
+      uint16_t adcValue = wiringPiI2CReadReg16(fd, 0x00); // Read ADC value
+      uint32_t newBit = adcValue & 0x01; // Extract LSB from ADC value
+      randomValue = (randomValue << 1) | newBit; // Add new bit to LSB
+      bitCount++; // Increment number of generated bits
+      delayMicroseconds(toggleDelay); // Delay
+    }
+
+    buffer[i] = randomValue; // Save random value in buffer array
+    bitCount = 0; // Reset number of generated bits
+  }
+
+  // Print buffer values in binary format
+  for (int i = 0; i < 8; i++) {
+    Serial.print(formatBinary(buffer[i])); // Print generated 32-bit values in binary format
+  }
+  Serial.println(); // New line to separate from other outputs
+
+  return 0;
+}
+
+String formatBinary(uint32_t number) {
+  String binaryString = String(number, BIN); // Convert to binary string
+  while (binaryString.length() < 32) {
+    binaryString = "0" + binaryString; // Pad with leading zeroes
+  }
+  return binaryString;
+}

Archiv/bin_string_print_console.py

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+import time
+import random
+import Adafruit_ADS1x15
+import RPi.GPIO as GPIO
+
+adc = Adafruit_ADS1x15.ADS1115()
+GAIN = 1
+
+adc.start_adc_difference(0, gain=GAIN, data_rate=860)
+
+bin_string = ""  # Initialize binary string
+
+while True:
+    for i in range(32):  # Loop 32 times to generate 32-bit binary number
+        value = adc.get_last_result()  # Read last conversion result
+        lsb = value & 0b00000001  # Extract LSB
+        bin_string += str(lsb)  # Add LSB to binary string
+    bin_string = bin_string[-32:]  # Keep only last 32 bits of binary string
+    bin_string = bin_string.zfill(32)  # Pad binary string with leading zeros to ensure it is 32 bits long
+    print(bin_string)  # Print binary string
+    bin_string = ""  # Reset binary string back to empty string
+    # No need to delay, as we're using the built-in oscillator for noise

Archiv/erzeuge_bin_file_statt_print.py

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+import time
+import random
+import Adafruit_ADS1x15
+import RPi.GPIO as GPIO
+import struct
+
+adc = Adafruit_ADS1x15.ADS1115()
+GAIN = 1
+
+adc.start_adc_difference(0, gain=GAIN, data_rate=860)
+
+num_samples = 1000  # Choose number of 32-bit binary numbers to generate
+binary_filename = "binary_data4.bin"  # Choose filename for binary file
+txt_filename = "binary_data4.txt"  # Choose filename for text file
+
+with open(binary_filename, "wb") as bin_file, open(txt_filename, "w") as txt_file:
+    for i in range(num_samples):
+        bin_string = ""  # Initialize binary string
+        for j in range(32):  # Loop 32 times to generate 32-bit binary number
+            value = adc.get_last_result()  # Read last conversion result
+            lsb = value & 0b01  # Extract LSB
+            #print (lsb)
+            bin_string += str(lsb)  # Add LSB to binary string
+        bin_data = struct.pack("I", int(bin_string, 2))  # Convert binary string to 32-bit unsigned integer and pack into binary data
+        bin_file.write(bin_data)  # Write binary data to file
+        txt_file.write(bin_string)  # Write binary string to text file
+        if i < num_samples-1:  # If not at the last sample, add a space to the end of the binary string in the text file
+            txt_file.write("")
+        time.sleep(0.00000001)  # Wait for a short time before generating next sample
+
+print("Binary file {} and text file {} generated successfully!".format(binary_filename, txt_filename))

Archiv/test.py

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+import os
+import serial
+import string
+import time
+
+def is_hex(char):
+    return char in string.hexdigits
+
+def convert_to_binary_string(filename):
+    # Open the file in binary mode
+    with open(filename, 'rb') as f:
+        # Read the contents of the file as bytes
+        content = f.read()
+
+    # Convert the bytes to a string of binary digits
+    binary_str = ''.join(format(byte, '08b') for byte in content)
+
+    # Write the binary string back to the file
+    with open(filename, 'w') as f:
+        f.write(binary_str)
+
+ser = serial.Serial('/dev/ttyACM0', 115200) # change port to input port from arduino
+filename = 'RAM_Test'
+
+start_time = time.time()  # start time of read
+
+with open(filename, 'wb') as file:
+    while os.path.getsize(filename) < 1250000:  # change to the desired file size in bits
+        if ser.in_waiting > 0:
+            data = ser.read(ser.in_waiting)  # reading the data input from COM port
+            #print(data)
+            file.write(data)
+            file.flush() # flush data to write
+
+# Convert the contents of the file to a binary string
+convert_to_binary_string(filename)
+
+end_time = time.time()  # end time of read
+elapsed_time = end_time - start_time 
+
+seconds = int(elapsed_time)
+milliseconds = int((elapsed_time % 1) * 100)
+
+new_filename = f"{filename.split('.')[0]}_TimeInSeconds_{seconds}_{milliseconds}.bin" # filename in format filename_seconds_milliseconds as txt with needed time to finish read
+
+os.rename(filename, new_filename)  # change filename to new filename
+
+print(f"time needed in seconds: {elapsed_time:.2f}. New filename: {new_filename}.")  # console write