def enable_esp32():
from network_esp32 import wifi
if wifi.isconnected() == False:
for i in range(5):
try:
# Running within 3 seconds of power-up can cause an SD load error
# wifi.reset(is_hard=False)
wifi.reset(is_hard=True)
print('try AT connect wifi...')
wifi.connect(SSID, PASW)
if wifi.isconnected():
break
except Exception as e:
print(e)
print('network state:', wifi.isconnected(), wifi.ifconfig())
# Licensed under the MIT license:
# http://www.opensource.org/licenses/mit-license.php
#
# Uasge see readme.md
from network_esp32 import wifi
SSID = "Sipeed_2.4G"
PASW = "XXXXXXXX"
if wifi.isconnected() == False:
for i in range(5):
try:
wifi.reset()
print('try AT connect wifi...')
wifi.connect(SSID, PASW)
if wifi.isconnected():
break
except Exception as e:
print(e)
print('network state:', wifi.isconnected(), wifi.ifconfig())
print("ping baidu.com:", wifi.nic.ping("baidu.com"), "ms")
wifi.nic.disconnect()
'''
ESP32_SPI firmware version: 1.4.0
try AT connect wifi...
network state: True ('192.168.0.180', '255.255.255.0', '192.168.0.1')
ping baidu.com: 40 ms
>
MicroPython v0.5.1-136-g039f72b6c-dirty on 2020-11-18; Sipeed_M1 with kendryte-k210
# create image directory if it doesn't exist if IMAGE_DIRECTORY not in os.listdir(): os.mkdir(IMAGE_DIRECTORY) # RESET WHEN WIFI OR SOCKET CONNECTION IS LOST def reset(): lcd.clear() lcd.draw_string(20, 100, "ERROR: can't connect to wifi/server", lcd.RED, lcd.BLACK) lcd.draw_string(125, 120, "reseting...", lcd.RED, lcd.BLACK) sleep_ms(ERROR_SLEEP_TIME) machine.reset() try: # INITIALIZE WIFI wifi.reset() wifi.connect(SSID, PASSWORD) # INITIALIZE SOCKET socket_client = usocket.socket(usocket.AF_INET, usocket.SOCK_STREAM) socket_client.connect((SERVER_ADDRESS, PORT)) # WON'T WORK IF SERVER IS NOT ON socket_client.settimeout(0) except: reset() # RETURNS THE DISTANCE, IN CENTIMETERS, FROM THE GIVEN ECHO AND TRIGGER PINS OF THE ULTRASONIC SENSOR def get_distance(echo, trigger): # set trigger high for 10us trigger.value(1) sleep_us(10) trigger.value(0)
