本任务是通过通过互联网更新的万年历时钟,并显示当地的天气信息。
其实这个任务和第二个任务是很像的,通过任务二的方式连接网络,再通过访问对应的url,获取对应的API数据,进行解析。将数据通过任务一的方式进行中文显示。
代码如下:
import time
import board
# import displayio
import ssl
import wifi
import socketpool
import adafruit_requests
from adafruit_display_text import label, wrap_text_to_lines
from adafruit_bitmap_font import bitmap_font
# 加载字库
font = bitmap_font.load_font("lib\wenquanyi_10pt.pcf")
color = 0x0555F5
# 初始化显示屏参数
display = board.DISPLAY
display.brightness = 0.25 # 更改亮度
display.rotation = 0 # 更改方向,0为横屏
# URLs to fetch from
JSON_TIME_URL = "http://quan.suning.com/getSysTime.do"
JSON_weather_URL = "http://t.weather.sojson.com/api/weather/city/{}"
# Get wifi details and more from a secrets.py file
try:
from secrets import secrets
except ImportError:
print("WiFi secrets are kept in secrets.py, please add them there!")
raise
print("ESP32-S2 Time&weather Test\n")
pool = socketpool.SocketPool(wifi.radio)
requests = adafruit_requests.Session(pool, ssl.create_default_context())
# 刷新显示
def refresh_screen(print_text):
text_area = label.Label(font, text=print_text, scale=1)
text_area.x = 2
text_area.y = 10
text_area.color = color
display.show(text_area)
# 获取数据
def get_data():
try:
response = requests.get(JSON_TIME_URL)
except ConnectionError as e:
print("Connection Error:", e)
print("Retrying in 60 seconds")
time_data = response.json()['sysTime2'][:-3]
# print(time_data)
try:
city_code = "101091101" # 秦皇岛市的城市代码
url = JSON_weather_URL.format(city_code)
response = requests.get(url)
except ConnectionError as e:
print("Connection Error:", e)
print("Retrying in 60 seconds")
weather_data = response.json()
cityInfo = weather_data['cityInfo']
city_weather = weather_data['data']
forecast = city_weather['forecast']
dis_str = ""+cityInfo['parent']+' '+cityInfo['city']
dis_str += " "+time_data
dis_str += "\n"+weather_data['time'][:11] + forecast[0]['week']
dis_str += ' 空气质量:' + city_weather['quality']
dis_str += "\n当前温度:"+city_weather['wendu']+"℃"
dis_str += " 湿度:" + city_weather['shidu']
dis_str += '\npm2.5:' + str(city_weather['pm25'])
dis_str += ' pm10:' + str(city_weather['pm10'])
dis_str += "\n明日最"+forecast[1]['high']+' 最'+forecast[1]['low']
dis_str += " " + forecast[1]['type']
dis_str += "\n注意!!" + forecast[1]['notice']
# print(dis_str)
return dis_str
while not wifi.radio.ipv4_address:
try:
wifi.radio.connect(secrets["ssid"], secrets["password"])
except ConnectionError as Error1:
print("Connection Error:", Error1)
print("Retrying in 3 seconds")
time.sleep(3)
print("IP:", wifi.radio.ipv4_address)
print("Connected!\n")
while True:
info = get_data()
refresh_screen(info)
time.sleep(60)
本测试用例中用到的天气查询是墨迹天气,有很多不同的查询方式,大家可以试着换一换,效果如下: