200 lines
7.0 KiB
Python
200 lines
7.0 KiB
Python
import network
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import socket
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import machine
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import utime
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import _thread
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import math
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import os
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# gpio pin to read power analysis off of (int)
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# reads 16bit (0-65535) between 0.0v and 3.3v
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# (16 bit is phony, real read is 12 bit)
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power_analysis_pin = 28
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# output gpio pin generating clock pulse
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clock_pulse_pin = 20
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# Wi-Fi credentials
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ssid = 'your-wifi-name-here'
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password = 'yuour-wifi-password-here'
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# == Clock Pulse Genertor == #
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# starts a pwm
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# usage do_pwm(int gpio_pin, float duty_cycle, int hertz frequency, int samples_per_clock_pulse)
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def do_pwm(outpin = 20, duty_cycle = 0.5, frequency = 2000):
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print('Starting Clock Pulse PWM')
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output_pin = machine.Pin(outpin)
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pwm_pin = machine.PWM(output_pin)
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pwm_pin.freq(frequency)
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pwm_duty = math.floor(duty_cycle*65535)
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percent_duty = duty_cycle*100
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pwm_pin.duty_u16(pwm_duty)
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print(f"Clock Pulses Running\n\tGPIO Pin: {outpin}\n\tDuty Cycle: {percent_duty}%\n\tFrequency: {frequency}Hz")
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def us_samples(frequency, samples_per_pulse):
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return math.floor(1000000/(frequency*samples_per_pulse))
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# == Read Value off of device == #
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# uses ADC, 16bit output is phony, is actualloy 12bit.
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# us of sleep calculate4d by floor(1000000 / (frequency_in_Hz * samples_per_pulse))
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def do_adc(adcpin=28, duty_cycle = 0.5, frequency = 2000, samples_per_pulse = 100):
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print('Starting voltage reading ADC')
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semaphore_thread_adc = _thread.allocate_lock()
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analog_value = machine.ADC(adcpin)
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us_sample = us_samples(frequency, samples_per_pulse)
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while True:
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semaphore_thread_adc.acquire()
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reading = analog_value.read_u16()
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print(reading)
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utime.sleep_us(us_sample)
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semaphore_thread_adc.release()
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# == HTTP Stuff == #
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# HTML template for the webpage
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def default_webpage():
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template = f"""
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<!DOCTYPE html>
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<html>
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<head>
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<title>Power Analysis Tool LFGGGGg</title>
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<meta name="viewport" content="width=device-width, initial-scale=1">
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</head>
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<body>
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<h1>SillyFilly Pi Pico Power Analysis Tool (LFFGGGGG)</h1>
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<form action="/action">
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<b>Clock Control Config</b><br>
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<input id="duty_cycle" name="duty_cycle" type="range" min="0" max="1" step="0.01" value="0.5"> <output id="duty_cycle_output">50%</output> Duty Cycle (% of time clock is on)<br><br>
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<input type="number" name="freq" value="2000"> Frequency (Hz aka number of pulses per second)<br><br>
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<b>Samplerate Config:</b><br>
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<input type="number" id="samples_per_pulse" name="samples_per_pulse" value="5"> Samples Per Manual Clock Pulse<br><br>
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<input type="submit" value="Go, Baby, Go!">
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</form>
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<script>
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const value = document.querySelector("#duty_cycle_output");
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const input = document.querySelector("#duty_cycle");
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value.textContent = input.value;
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value.textContent = "50%"; // set default for some reason? fuck javascript
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input.addEventListener("input", (event) => {{
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value.textContent = (event.target.value*100)+"%";
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}});
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</script>
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</body>
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</html>
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"""
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return str(template)
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# us of sleep calculate4d by floor(1000000 / (frequency_in_Hz * samples_per_pulse))
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def running_webpage(outpin = 20, adcpin = 28, duty_cycle = 0.5, frequency = 2000, samples_per_pulse = 100):
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dutyy = duty_cycle*100
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us_sample = us_samples(frequency, samples_per_pulse)
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template = f"""
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<!DOCTYPE html>
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<html>
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<head>
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<title>RUNNING - Power Analysis Tool LFGGGGg</title>
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<meta name="viewport" content="width=device-width, initial-scale=1">
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</head>
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<body>
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<h1>SillyFilly Pi Pico Power Analysis Tool (LFFGGGGG)</h1>
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<h2>WE RUNNING NOWWWWW LFGGGGGGGGGGGGG</h2>
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<p>
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Clock Pulse Pin: <b>{outpin}</b><br>
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Power Analysis Pin: <b>{adcpin}</b><br><br>
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Frequency: <b>{frequency}Hz</b> (Duty Cycle: <b>{dutyy}%</b>)<br>
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Samples Per Pulse: <b>{samples_per_pulse}</b><br>
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Delay Between Samples: <b>{us_sample}us</b><br><br>
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<b>LFGGGGGGGG FRONG</b>
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</p>
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</body>
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</html>
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"""
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return str(template)
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print("Board Started or Reset\n===========\n\n")
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# Connect to WLAN
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wlan = network.WLAN(network.STA_IF)
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wlan.active(True)
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wlan.connect(ssid, password)
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# Wait for Wi-Fi connection
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connection_timeout = 10
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while connection_timeout > 0:
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if wlan.status() >= 3:
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break
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connection_timeout -= 1
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print('Waiting for Wi-Fi connection...')
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utime.sleep(1)
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# Check if connection is successful
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if wlan.status() != 3:
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raise RuntimeError('Failed to establish a network connection')
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else:
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print('Connection successful!')
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network_info = wlan.ifconfig()
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#print('IP address:', network_info[0])
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print(f"\n\nOpen web browser and navigate to http://{network_info[0]}\n\n")
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# Set up socket and start listening
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addr = socket.getaddrinfo('0.0.0.0', 80)[0][-1]
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s = socket.socket()
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s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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s.bind(addr)
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s.listen()
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# I like to have the LED on :3
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led = machine.Pin('LED', machine.Pin.OUT)
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led.value(1)
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while True:
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try:
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conn, addr = s.accept()
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request = conn.recv(1024)
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request = str(request)
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try:
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fullreq = request.split()
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request = fullreq[1]
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except IndexError:
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pass
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# Process the action page!
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if request.startswith('/action?', 0):
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# parse the request path to extract da GET vars
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req_string = request.split('?')[1]
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req_vars = req_string.split('&')
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for f in req_vars:
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req_split = f.split('=')
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# Type strict whitelist for safety and compatibility
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if req_split[0] == 'duty_cycle':
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duty_cycle_in = float(req_split[1])
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elif req_split[0] == 'freq':
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freq_in = int(req_split[1])
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elif req_split[0] == 'samples_per_pulse':
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samples_per_pulse_in = int(req_split[1])
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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}")
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# run the clock pulse (PWM) task
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do_pwm(clock_pulse_pin, duty_cycle_in, freq_in)
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# fork the voltage measuring ADC reading to the second core
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_thread.start_new_thread(do_adc, (power_analysis_pin, duty_cycle_in, freq_in, samples_per_pulse_in))
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response = running_webpage()
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else:
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response = default_webpage()
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# Send the HTTP response and close the connection
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conn.send('HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n')
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conn.send(response)
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conn.close()
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except OSError as e:
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conn.close()
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print('Connection closed') |