Update TempHumidity.py

Processors/PyBoard/Examples/Grove/TempHumidity Class.py

@@ -1,163 +1,25 @@
 '''
-http://wiki.seeedstudio.com/Grove-TemperatureAndHumidity_Sensor/
+http://wiki.seeedstudio.com/Grove-Temperature_and_Humidity_Sensor_Pro/
 
 connections: 
-Ground (B) - GND 
-Power  (R)   - 3V3 
+Ground  - GND 
+Power    - 3V3 
 NC
 Signal -  pin Y10
 '''
 
-def set_max_priority(): pass
-def set_default_priority(): pass
-from utime import sleep
 
-PULSES_CNT = 41
+import dht
+import machine, utime
+#DHT library from website 
+d=dht.DHT11(machine.Pin('Y10'))
 
-class DHT(object):
-    DHT_TYPE = {
-        'DHT11': '11',
-        'DHT22': '22'
-    }
+while True:
+     d.measure()
+     print("Temp:")
+     print(d.temperature())
+     print("Humidity:")
+     print(d.humidity())
+     utime.sleep_ms(500)
 
-    MAX_CNT = 320
-
-    def __init__(self, dht_type, pin):        
-        self.pin = pin
-        if dht_type != self.DHT_TYPE['DHT11'] and dht_type != self.DHT_TYPE['DHT22']:
-            print('ERROR: Please use 11|22 as dht type.')
-            exit(1)
-        self._dht_type = '11'
-        self.dht_type = dht_type
-        GPIO.setup(self.pin, GPIO.OUT)
-
-    @property
-    def dht_type(self):
-        return self._dht_type
-
-    @dht_type.setter
-    def dht_type(self, type):
-        self._dht_type = type
-        self._last_temp = 0.0
-        self._last_humi = 0.0
-
-    def _read(self):
-        # Send Falling signal to trigger sensor output data
-        # Wait for 20ms to collect 42 bytes data
-        GPIO.setup(self.pin, GPIO.OUT)
-        set_max_priority()
-
-        GPIO.output(self.pin, 1)
-        sleep(.2)
-
-        GPIO.output(self.pin, 0)
-        sleep(.018)
-
-        GPIO.setup(self.pin, GPIO.IN)
-        # a short delay needed
-        for i in range(10):
-            pass
-
-        # pullup by host 20-40 us
-        count = 0
-        while GPIO.input(self.pin):
-            count += 1
-            if count > self.MAX_CNT:
-                # print("pullup by host 20-40us failed")
-                set_default_priority()
-                return None, "pullup by host 20-40us failed"
-
-        pulse_cnt = [0] * (2 * PULSES_CNT)
-        fix_crc = False
-        for i in range(0, PULSES_CNT * 2, 2):
-            while not GPIO.input(self.pin):
-                pulse_cnt[i] += 1
-                if pulse_cnt[i] > self.MAX_CNT:
-                    # print("pulldown by DHT timeout %d" % i)
-                    set_default_priority()
-                    return None, "pulldown by DHT timeout %d" % i
-
-            while GPIO.input(self.pin):
-                pulse_cnt[i + 1] += 1
-                if pulse_cnt[i + 1] > self.MAX_CNT:
-                    # print("pullup by DHT timeout %d" % (i + 1))
-                    if i == (PULSES_CNT - 1) * 2:
-                        # fix_crc = True
-                        # break
-                        pass
-                    set_default_priority()
-                    return None, "pullup by DHT timeout %d" % i
-
-        # back to normal priority
-        set_default_priority()
-
-        total_cnt = 0
-        for i in range(2, 2 * PULSES_CNT, 2):
-            total_cnt += pulse_cnt[i]
-
-        # Low level ( 50 us) average counter
-        average_cnt = total_cnt / (PULSES_CNT - 1)
-        # print("low level average loop = %d" % average_cnt)
-
-        data = ''
-        for i in range(3, 2 * PULSES_CNT, 2):
-            if pulse_cnt[i] > average_cnt:
-                data += '1'
-            else:
-                data += '0'
-
-        data0 = int(data[ 0: 8], 2)
-        data1 = int(data[ 8:16], 2)
-        data2 = int(data[16:24], 2)
-        data3 = int(data[24:32], 2)
-        data4 = int(data[32:40], 2)
-
-        if fix_crc and data4 != ((data0 + data1 + data2 + data3) & 0xFF):
-            data4 = data4 ^ 0x01
-            data = data[0: PULSES_CNT - 2] + ('1' if data4 & 0x01 else '0')
-
-        if data4 == ((data0 + data1 + data2 + data3) & 0xFF):
-            if self._dht_type == self.DHT_TYPE['DHT11']:
-                humi = int(data0)
-                temp = int(data2)
-            elif self._dht_type == self.DHT_TYPE['DHT22']:
-                humi = float(int(data[ 0:16], 2)*0.1)
-                temp = float(int(data[17:32], 2)*0.2*(0.5-int(data[16], 2)))
-        else:
-            # print("checksum error!")
-            return None, "checksum error!"
-
-        return humi, temp
-
-    def read(self, retries = 15):
-        for i in range(retries):
-            humi, temp = self._read()
-            if not humi is None:
-                break
-        if humi is None:
-            return self._last_humi, self._last_temp
-        self._last_humi,self._last_temp = humi, temp
-        return humi, temp
-
-Grove = DHT
-
-
-def main():
-    import sys
-    import time
-
-    if len(sys.argv) < 3:
-        print('Usage: {} dht_type pin'.format(sys.argv[0]))
-        sys.exit(1)
-
-    typ = sys.argv[1]
-    sensor = DHT(typ, int(sys.argv[2]))
-
-    while True:
-        humi, temp = sensor.read()
-        if not humi is None:
-            print('DHT{0}, humidity {1:.1f}%, temperature {2:.1f}*'.format(sensor.dht_type, humi, temp))
-        else:
-            print('DHT{0}, humidity & temperature: {1}'.format(sensor.dht_type, temp))
-        time.sleep(1)