初始化提交

boards/default/micropython_k210_mixgoai/build/lib/dht11.py

@@ -0,0 +1,58 @@
+import time,board
+	
+def read_data(pin_name):
+	data=[]
+	j=0
+	time.sleep_ms(1200)
+	N1 = board.pin(pin_name, board.GPIO.OUT)
+	N1.value(0)
+	time.sleep_ms(20)
+	N1.value(1)
+	time.sleep_us(30)
+	N1 =board.pin(pin_name, board.GPIO.IN)
+	T1 = time.ticks_us()
+	while N1.value()==0:
+		continue
+	while N1.value()==1:
+		T2 =time.ticks_us()
+		if time.ticks_diff(T2, T1) >200000:
+			#raise ValueError("[MixNo]:Sensor read error")
+			break
+		continue
+	while j<40:
+		k=0
+		while N1.value()==0:
+			continue
+		while N1.value()==1:
+			k+=1
+			if k>100:break
+		if k<15:
+			data.append(0)
+		else:
+			data.append(1)
+		j=j+1
+	del N1
+	humidity_bit=data[0:8]
+	humidity_point_bit=data[8:16]
+	temperature_bit=data[16:24]
+	temperature_point_bit=data[24:32]
+	check_bit=data[32:40]
+	humidity=0
+	humidity_point=0
+	temperature=0.0
+	temperature_point=0
+	check=0
+	for i in range(8):
+		humidity+=humidity_bit[i]*2**(7-i)
+		humidity_point+=humidity_point_bit[i]*2**(7-i)
+		temperature+=temperature_bit[i]*2**(7-i)
+		temperature_point+=temperature_point_bit[i]*2**(7-i)
+		check+=check_bit[i]*2**(7-i)
+	tmp=humidity+humidity_point+temperature+temperature_point
+	#print(humidity_point,temperature_point)
+	if check==tmp:
+		#print('temperature is',temperature,'-wet is',humidity,'%')
+		return (temperature+temperature_point/10,humidity)
+	else:
+		#print('Error:',humidity,humidity_point,temperature,temperature_point,check)
+		return (None,None)