修复 1. AGS10的TVOC 数据为准备就绪问题

2. ntp支持多次获取时间
     3. mini的同步讯飞function

boards/default_src/micropython/origin/build/lib/ags10.py

@@ -17,9 +17,10 @@ class AGS10:
     def __init__(self, i2c_bus, address=0x1A, delay=1000):
         self._i2c = i2c_bus
         self._addr = address
-        self._voc = None
+        self._voc = 0
         self._delay = delay
         self._star = 0
+        self.ready = 0
 
     def _crc8(self, buf, is_byte=False):
         '''Perform CRC check on the data'''
@@ -76,8 +77,8 @@ class AGS10:
         if time.ticks_diff(time.ticks_ms(), self._star) >= self._delay: 
             self._star = time.ticks_ms() 
             _buf = self._rreg(_AGS10_ADC)
-            if (_buf[0] & 0x01) == 0:
-                self._voc = int.from_bytes(_buf[1:4], 'big')
+            self._voc = int.from_bytes(_buf[1:4], 'big')
+            self.ready = not (_buf[0] & 0x01)
         return self._voc / 1000
 
     def read(self, hcho_mw=30.033 , co2_mv=0.853, co2_base=400):