from machine import Pin
import time, network, socket
# -----------------------------
# 8 digitale Eingänge
# -----------------------------
pin_list = [16, 17, 18, 19, 23, 25, 26, 27]
pins=[]
for pin in pin_list:
pins.append(Pin(pin, Pin.IN))
# Speicher für Messwerte
samples = []
sample_count = 1000
sample_delay_us = 100 # 100 µs = 10 kHz Abtastrate ungefähr
channel_names = [
"TRIGGER",
"D1",
"D2",
"D3",
"D4",
"D5",
"D6",
"D7"
]
def read_8bit():
value = 0
for i, p in enumerate(pins):
if p.value():
value |= (1 << i)
return value
def capture():
#print("capture")
#print(make_html())
global samples
samples = []
for i in range(sample_count):
samples.append(read_8bit())
time.sleep_us(sample_delay_us)
def make_html():
data = ",".join(str(v) for v in samples)
channel_names_js = ",".join('"' + name + '"' for name in channel_names)
html = f"""
ESP32 8-Kanal Speicheroszi
ESP32 8-Kanal Speicheroszilloskop
Aktuelle Uhrzeit:
"""
return html
def start_server():
addr = socket.getaddrinfo("0.0.0.0", 80)[0][-1]
s = socket.socket()
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) # wegen OSError: [Errno 112] EADDRINUSE
s.bind(addr)
s.listen(1)
print("Webserver läuft auf Port 80")
while True:
print("_", end="")
cl, addr = s.accept()
request = cl.recv(1024).decode()
if "GET /capture" in request:
print("Messung startet...")
capture()
print("Messung fertig")
html = make_html()
cl.send("HTTP/1.1 200 OK\r\n")
cl.send("Content-Type: text/html\r\n")
cl.send("Connection: close\r\n\r\n")
cl.sendall(html.encode())
cl.close()