import network import socket import machine import utime import _thread import math import os # gpio pin to read power analysis off of (int) # reads 16bit (0-65535) between 0.0v and 3.3v # (16 bit is phony, real read is 12 bit) power_analysis_pin = 28 # output gpio pin generating clock pulse clock_pulse_pin = 20 # Wi-Fi credentials ssid = 'your-wifi-name-here' password = 'yuour-wifi-password-here' # == Clock Pulse Genertor == # # starts a pwm # usage do_pwm(int gpio_pin, float duty_cycle, int hertz frequency, int samples_per_clock_pulse) def do_pwm(outpin = 20, duty_cycle = 0.5, frequency = 2000): print('Starting Clock Pulse PWM') output_pin = machine.Pin(outpin) pwm_pin = machine.PWM(output_pin) pwm_pin.freq(frequency) pwm_duty = math.floor(duty_cycle*65535) percent_duty = duty_cycle*100 pwm_pin.duty_u16(pwm_duty) print(f"Clock Pulses Running\n\tGPIO Pin: {outpin}\n\tDuty Cycle: {percent_duty}%\n\tFrequency: {frequency}Hz") def us_samples(frequency, samples_per_pulse): return math.floor(1000000/(frequency*samples_per_pulse)) # == Read Value off of device == # # uses ADC, 16bit output is phony, is actualloy 12bit. # us of sleep calculate4d by floor(1000000 / (frequency_in_Hz * samples_per_pulse)) def do_adc(adcpin=28, duty_cycle = 0.5, frequency = 2000, samples_per_pulse = 100): print('Starting voltage reading ADC') semaphore_thread_adc = _thread.allocate_lock() analog_value = machine.ADC(adcpin) us_sample = us_samples(frequency, samples_per_pulse) while True: semaphore_thread_adc.acquire() reading = analog_value.read_u16() print(reading) utime.sleep_us(us_sample) semaphore_thread_adc.release() # == HTTP Stuff == # # HTML template for the webpage def default_webpage(): template = f""" Power Analysis Tool LFGGGGg

SillyFilly Pi Pico Power Analysis Tool (LFFGGGGG)

Clock Control Config
50% Duty Cycle (% of time clock is on)

Frequency (Hz aka number of pulses per second)

Samplerate Config:
Samples Per Manual Clock Pulse

""" return str(template) # us of sleep calculate4d by floor(1000000 / (frequency_in_Hz * samples_per_pulse)) def running_webpage(outpin = 20, adcpin = 28, duty_cycle = 0.5, frequency = 2000, samples_per_pulse = 100): dutyy = duty_cycle*100 us_sample = us_samples(frequency, samples_per_pulse) template = f""" RUNNING - Power Analysis Tool LFGGGGg

SillyFilly Pi Pico Power Analysis Tool (LFFGGGGG)

WE RUNNING NOWWWWW LFGGGGGGGGGGGGG

Clock Pulse Pin: {outpin}
Power Analysis Pin: {adcpin}

Frequency: {frequency}Hz (Duty Cycle: {dutyy}%)
Samples Per Pulse: {samples_per_pulse}
Delay Between Samples: {us_sample}us

LFGGGGGGGG FRONG

""" return str(template) print("Board Started or Reset\n===========\n\n") # Connect to WLAN wlan = network.WLAN(network.STA_IF) wlan.active(True) wlan.connect(ssid, password) # Wait for Wi-Fi connection connection_timeout = 10 while connection_timeout > 0: if wlan.status() >= 3: break connection_timeout -= 1 print('Waiting for Wi-Fi connection...') utime.sleep(1) # Check if connection is successful if wlan.status() != 3: raise RuntimeError('Failed to establish a network connection') else: print('Connection successful!') network_info = wlan.ifconfig() #print('IP address:', network_info[0]) print(f"\n\nOpen web browser and navigate to http://{network_info[0]}\n\n") # Set up socket and start listening addr = socket.getaddrinfo('0.0.0.0', 80)[0][-1] s = socket.socket() s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) s.bind(addr) s.listen() # I like to have the LED on :3 led = machine.Pin('LED', machine.Pin.OUT) led.value(1) while True: try: conn, addr = s.accept() request = conn.recv(1024) request = str(request) try: fullreq = request.split() request = fullreq[1] except IndexError: pass # Process the action page! if request.startswith('/action?', 0): # parse the request path to extract da GET vars req_string = request.split('?')[1] req_vars = req_string.split('&') for f in req_vars: req_split = f.split('=') # Type strict whitelist for safety and compatibility if req_split[0] == 'duty_cycle': duty_cycle_in = float(req_split[1]) elif req_split[0] == 'freq': freq_in = int(req_split[1]) elif req_split[0] == 'samples_per_pulse': samples_per_pulse_in = int(req_split[1]) print(f"power_analysis_pin: {power_analysis_pin}\nduty_cycle_in: {duty_cycle_in}\nfreq_in: {freq_in}\nsamples_per_pulse_in:{samples_per_pulse_in}") # run the clock pulse (PWM) task do_pwm(clock_pulse_pin, duty_cycle_in, freq_in) # fork the voltage measuring ADC reading to the second core _thread.start_new_thread(do_adc, (power_analysis_pin, duty_cycle_in, freq_in, samples_per_pulse_in)) response = running_webpage() else: response = default_webpage() # Send the HTTP response and close the connection conn.send('HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n') conn.send(response) conn.close() except OSError as e: conn.close() print('Connection closed')