kopia lustrzana https://github.com/pimoroni/pimoroni-pico
Add Pico Wireless Python examples
Phil Howard
rodzic
c748437d60
commit
6167589812
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@ -0,0 +1,112 @@
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import time
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import picowireless
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from micropython import const
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WIFI_SSID = "your SSID here!"
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WIFI_PASS = "Your PSK here!"
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CLOUDFLARE_DNS = (1, 1, 1, 1)
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GOOGLE_DNS = (8, 8, 8, 8)
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USE_DNS = CLOUDFLARE_DNS
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TCP_MODE = const(0)
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HTTP_REQUEST_DELAY = const(30)
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HTTP_PORT = 80
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HTTP_REQUEST_HOST = "api.thingspeak.com"
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HTTP_REQUEST_PATH = "/channels/1417/field/2/last.txt"
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def connect(host_address, port, client_sock, timeout=1000):
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picowireless.client_start(host_address, port, client_sock, TCP_MODE)
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t_start = time.time()
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timeout /= 1000.0
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while time.time() - t_start < timeout:
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state = picowireless.get_client_state(client_sock)
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if state == 4:
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return True
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time.sleep(1.0)
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return False
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def http_request(client_sock, host_address, port, request_host, request_path, handler):
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print("Connecting to {1}.{2}.{3}.{4}:{0}...".format(port, *host_address))
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if not connect(host_address, port, client_sock):
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print("Connection failed!")
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return False
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print("Connected!")
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http_request = """GET {} HTTP/1.1
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Host: {}
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Connection: close
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""".format(request_path, request_host).replace("\n", "\r\n")
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picowireless.send_data(client_sock, http_request)
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while True:
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avail_length = picowireless.avail_data(client_sock)
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if avail_length > 0:
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break
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print("Got response: {} bytes".format(avail_length))
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response = b""
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while len(response) < avail_length:
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data = picowireless.get_data_buf(client_sock)
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response += data
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response = response.decode("utf-8")
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head, body = response.split("\r\n\r\n", 1)
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dhead = {}
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for line in head.split("\r\n")[1:]:
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key, value = line.split(": ", 1)
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dhead[key] = value
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handler(dhead, body)
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picowireless.client_stop(client_sock)
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picowireless.init()
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print("Connecting to {}...".format(WIFI_SSID))
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picowireless.wifi_set_passphrase(WIFI_SSID, WIFI_PASS)
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while True:
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if picowireless.get_connection_status() == 3:
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break
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print("Connected!")
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# Get our own local IP!
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my_ip = picowireless.get_ip_address()
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print("Local IP: {}.{}.{}.{}".format(*my_ip))
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# Resolve and cache the IP address
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picowireless.set_dns(USE_DNS)
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http_address = picowireless.get_host_by_name(HTTP_REQUEST_HOST)
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print("Resolved {} to {}.{}.{}.{}".format(HTTP_REQUEST_HOST, *http_address))
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client_sock = picowireless.get_socket()
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def handler(head, body):
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if head["Status"] == "200 OK":
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color = body[1:]
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r = int(color[0:2], 16)
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g = int(color[3:4], 16)
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b = int(color[5:6], 16)
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picowireless.set_led(r, g, b)
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print("Set LED to {} {} {}".format(r, g, b))
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else:
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print("Error: {}".format(head["Status"]))
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while True:
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http_request(client_sock, http_address, HTTP_PORT, HTTP_REQUEST_HOST, HTTP_REQUEST_PATH, handler)
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time.sleep(60.0)
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@ -0,0 +1,182 @@
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import time
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import picowireless
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from micropython import const
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WIFI_SSID = "your SSID here!"
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WIFI_PASS = "Your PSK here!"
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TCP_CLOSED = 0
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TCP_LISTEN = 1
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CLOUDFLARE_DNS = (1, 1, 1, 1)
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GOOGLE_DNS = (8, 8, 8, 8)
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TCP_MODE = const(0)
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HTTP_REQUEST_DELAY = const(30)
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HTTP_PORT = 80
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routes = {}
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r = 0
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g = 0
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b = 0
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def start_wifi():
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picowireless.init()
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print("Connecting to {}...".format(WIFI_SSID))
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picowireless.wifi_set_passphrase(WIFI_SSID, WIFI_PASS)
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while True:
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if picowireless.get_connection_status() == 3:
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break
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print("Connected!")
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def start_server(http_port, timeout=1.0):
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my_ip = picowireless.get_ip_address()
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print("Starting server...")
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server_sock = picowireless.get_socket()
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picowireless.server_start(http_port, server_sock, 0)
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t_start = time.time()
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while time.time() - t_start < timeout:
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state = picowireless.get_server_state(server_sock)
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if state == TCP_LISTEN:
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print("Server listening on {1}.{2}.{3}.{4}:{0}".format(http_port, *my_ip))
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return server_sock
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return None
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def handle_http_request(server_sock, timeout=1.0):
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t_start = time.time()
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client_sock = picowireless.avail_server(server_sock)
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if client_sock in [server_sock, 255, -1]:
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return False
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print("Client connected!")
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avail_length = picowireless.avail_data(client_sock)
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if avail_length == 0:
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picowireless.client_stop(client_sock)
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return False
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request = b""
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while len(request) < avail_length:
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data = picowireless.get_data_buf(client_sock)
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request += data
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if time.time() - t_start > timeout:
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print("Client timed out getting data!")
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picowireless.client_stop(client_sock)
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return False
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request = request.decode("utf-8")
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if len(request) > 0:
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head, body = request.split("\r\n\r\n", 1)
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dhead = {}
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for line in head.split("\r\n")[1:]:
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key, value = line.split(": ", 1)
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dhead[key] = value
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method, url, _ = head.split("\r\n", 1)[0].split(" ")
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print("Serving {} on {}...".format(method, url))
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response = None
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# Dispatch the request to the relevant route
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if url in routes and method in routes[url] and callable(routes[url][method]):
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if method == "POST":
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data = {}
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for var in body.split("&"):
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key, value = var.split("=")
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data[key] = value
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response = routes[url][method](method, url, data)
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else:
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response = routes[url][method](method, url)
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if response is not None:
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response = "HTTP/1.1 200 OK\r\nContent-Length: {}\r\nContent-Type: text/html\r\n\r\n".format(len(response)) + response
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picowireless.send_data(client_sock, response)
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picowireless.client_stop(client_sock)
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print("Success! Sending 200 OK")
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return True
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else:
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picowireless.send_data(client_sock, "HTTP/1.1 501 Not Implemented\r\nContent-Length: 19\r\n\r\n501 Not Implemented")
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picowireless.client_stop(client_sock)
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print("Unhandled Request! Sending 501 OK")
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return False
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def route(url, methods="GET"):
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if type(methods) is str:
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methods = [methods]
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def decorate(handler):
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for method in methods:
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if url not in routes:
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routes[url] = {}
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routes[url][method] = handler
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return decorate
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# Edit your routes here
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# Nothing fancy is supported, just plain ol' URLs and GET/POST methods
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@route("/", methods=["GET", "POST"])
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def get_home(method, url, data=None):
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if method == "POST":
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global r, g, b
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r = int(data.get("r", 0))
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g = int(data.get("g", 0))
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b = int(data.get("b", 0))
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picowireless.set_led(r, g, b)
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print("Set LED to {} {} {}".format(r, g, b))
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return """<form method="post" action="/">
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<input id="r" name="r" type="number" value="{r}" />
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<input name="g" type="number" value="{g}" />
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<input name="b" type="number" value="{b}" />
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<input type="submit" value="Set LED" />
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</form>""".format(r=r, g=g, b=b)
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@route("/test", methods="GET")
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def get_test(method, url):
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return "Hello World!"
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start_wifi()
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server_sock = start_server(HTTP_PORT)
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while True:
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handle_http_request(server_sock)
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time.sleep(0.01)
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# Whoa there! Did you know you could run the server polling loop
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# on Pico's *other* core!? Here's how:
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#
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# import _thread
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#
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# def server_loop_forever():
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# # Start a server and continuously poll for HTTP requests
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# server_sock = start_server(HTTP_PORT)
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# while True:
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# handle_http_request(server_sock)
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# time.sleep(0.01)
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#
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# Handle the server polling loop on the other core!
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# _thread.start_new_thread(server_loop_forever, ())
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#
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# # Your very own main loop for fun and profit!
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# while True:
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# print("Colour: {} {} {}".format(r, g, b))
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# time.sleep(5.0)
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