import sensor, image, time, network, usocket, sys, json
SSID ='OPENMV_AP' # Network SSID
KEY ='1234567890' # Network key (must be 10 chars)
HOST = '' # Use first available interface
PORT = 8080 # Arbitrary non-privileged port
green_threshold = ( 0, 80, -70, -10, -0, 30)
# Reset sensor
sensor.reset()
# Set sensor settings
sensor.set_contrast(1)
sensor.set_brightness(1)
sensor.set_saturation(1)
sensor.set_gainceiling(16)
sensor.set_framesize(sensor.QQVGA)
sensor.set_pixformat(sensor.GRAYSCALE)
# Init wlan module in AP mode.
wlan = network.WINC(mode=network.WINC.MODE_AP)
wlan.start_ap(SSID, key=KEY, security=wlan.WEP, channel=2)
# You can block waiting for client to connect
#print(wlan.wait_for_sta(10000))
def response(s):
print ('Waiting for connections..')
client, addr = s.accept()
# set client socket timeout to 2s
client.settimeout(2.0)
print ('Connected to ' + addr[0] + ':' + str(addr[1]))
# Read request from client
data = client.recv(1024)
# Should parse client request here
# Send multipart header
client.send("HTTP/1.1 200 OK\r\n" \
"Server: OpenMV\r\n" \
"Content-Type: application/json\r\n" \
"Cache-Control: no-cache\r\n" \
"Pragma: no-cache\r\n\r\n")
# FPS clock
clock = time.clock()
# Start streaming images
# NOTE: Disable IDE preview to increase streaming FPS.
img = sensor.snapshot()
blobs = img.find_blobs([green_threshold])
if blobs:
for b in blobs:
img.draw_rectangle(b[0:4]) # rect
img.draw_cross(b[5], b[6]) # cx, cy
client.send(json.dumps(blobs))
client.close()
while (True):
# Create server socket
s = usocket.socket(usocket.AF_INET, usocket.SOCK_STREAM)
try:
# Bind and listen
s.bind([HOST, PORT])
s.listen(5)
# Set server socket timeout
# NOTE: Due to a WINC FW bug, the server socket must be closed and reopened if
# the client disconnects. Use a timeout here to close and re-create the socket.
s.settimeout(3)
response(s)
except OSError as e:
s.close()
print("socket error: ", e)