Arduino实验: 新浪微博关注好友状态更新数量 http://jeeker.net/article/first-arduino-experiment-show-amount-of-weibo-friend-new-status/

show-amount-of-weibo-friend-new-status.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
#! 强制默认编码为utf-8
import sys
reload(sys)
sys.setdefaultencoding('utf8')

import pyfirmata, urllib, json, time
from datetime import datetime

#! 微博的API调用需要OAuth2.0登陆授权
#! 这里不做授权过程，需使用开发者账号测试 参考：http://t.cn/zYDjFan
ACCESS_TOKEN = 'YOUR ACCESS TOKEN'

# Arduino硬件接口
ARDUINO_PORT        = 'YOUR ARDUINO PORT'

POWER_PIN           = 13
DOTPOINT_PIN        = 5

NUMBERS = [
    #E  D  C  DP B  A  F  G   // 数码管
    #2  3  4  5  6  7  8  9   // 输出端口
    [0, 0, 0, 1, 0, 0, 0, 1], # 0
    [0, 1, 1, 1, 1, 1, 0, 1], # 1
    [0, 0, 1, 1, 0, 0, 1, 0], # 2 
    [1, 0, 0, 1, 0, 0, 1, 0], # 3
    [1, 1, 0, 1, 0, 1, 0, 0], # 4
    [1, 0, 0, 1, 1, 0, 0, 0], # 5
    [0, 0, 0, 1, 1, 0, 0, 0], # 6
    [1, 1, 0, 1, 0, 0, 1, 1], # 7
    [0, 0, 0, 1, 0, 0, 0, 0], # 8
    [1, 0, 0, 1, 0, 0, 0, 0], # 9
    [1, 1, 1, 0, 1, 1, 1, 1], # dot point
    [1, 1, 1, 1, 1, 1, 1, 0], # line
    [1, 1, 1, 1, 1, 1, 1, 1]  # nothing
]

class WBftc(object):
    def __init__(self):
        self.arduino = None
        self.lastStatusID = ''
        self.initArduino()

    def __del__(self):
        if isinstance(self.arduino, pyfirmata.Arduino):
            for i in xrange(2, 14):
                self.arduino.digital[i].write(0)

    def initArduino(self):
        if isinstance(self.arduino, pyfirmata.Arduino):
            return
        try:
            self.arduino = pyfirmata.Arduino(ARDUINO_PORT)
            self.arduino.digital[13].write(1)
        except Exception, e:
            print('init arduino fail.')
            sys.exit(1)

    def outputArduino(self, num):
        if not isinstance(self.arduino, pyfirmata.Arduino):
            return
        # 输出 0 - 9 的数字
        show = num
        # 小于0 错误
        if num < 0:
            show = 12
        # 大于 9 超出量程
        elif num > 9:
            show = 11
        for x in range(2, 10):
            self.arduino.digital[x].write(NUMBERS[show][x - 2])

    def flashDotPoint(self, interval = 1, count = 30):
        show_dot = True
        for x in range(count):
            self.arduino.digital[DOTPOINT_PIN].write(0 if show_dot else 1)
            show_dot = False if show_dot else True
            time.sleep(interval)

    def fetchWeiboStatusCount(self):
        # -1 错误
        url = 'https://api.weibo.com/2/statuses/friends_timeline/ids.json'
        data = {
            'access_token'  : ACCESS_TOKEN
        }
        if self.lastStatusID:
            data.update({'since_id' : self.lastStatusID })
        data = urllib.urlencode(data)
        try:
            requst = urllib.urlopen('{}?{}'.format(url, data))
            res = json.load(requst)
            if not res.has_key('statuses'):
                return -1
            statuses = res['statuses']
            if len(statuses):
                self.lastStatusID = statuses[0]
            return len(statuses)
        except Exception, e:
            print('something error.')
            return -1

    def run(self):
        while (True):
            count = self.fetchWeiboStatusCount()
            now = datetime.now().strftime('%H:%M:%S')
            print('{}: {}'.format(now, count))
            self.outputArduino(count)
            self.flashDotPoint()

if __name__ == '__main__':
    try:
        WBftc().run()
    except KeyboardInterrupt:
        print('\rexit.')
    except Exception, e:
        raise e