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Several minor fix, asyncio, gpio, rotary encoder, config saving, OLED
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,117 @@ | ||
| ############################################################################# | ||
| ############################# AM2320 for mpyEasy ############################ | ||
| ############################################################################# | ||
| # | ||
| # Copyright (C) 2022 by Alexander Nagy - https://bitekmindenhol.blog.hu/ | ||
| # | ||
| import plugin | ||
| import pglobals | ||
| import misc | ||
| import webserver_global as ws | ||
| import utime | ||
| import inc.libhw as libhw | ||
| import ustruct | ||
|
|
||
| class Plugin(plugin.PluginProto): | ||
| PLUGIN_ID = 51 | ||
| PLUGIN_NAME = "Environment - AM2320" | ||
| PLUGIN_VALUENAME1 = "Temperature" | ||
| PLUGIN_VALUENAME2 = "Humidity" | ||
|
|
||
| def __init__(self,taskindex): # general init | ||
| plugin.PluginProto.__init__(self,taskindex) | ||
| self.dtype = pglobals.DEVICE_TYPE_I2C | ||
| self.vtype = pglobals.SENSOR_TYPE_TEMP_HUM | ||
| self.readinprogress = 0 | ||
| self.valuecount = 2 | ||
| self.senddataoption = True | ||
| self.timeroption = True | ||
| self.timeroptional = False | ||
| self.formulaoption = True | ||
| self._nextdataservetime = 0 | ||
| self._temp = None | ||
|
|
||
| def plugin_init(self,enableplugin=None): | ||
| plugin.PluginProto.plugin_init(self,enableplugin) | ||
| self.uservar[0] = 0 | ||
| self.uservar[1] = 0 | ||
| self.readinprogress = 0 | ||
| if self.enabled: | ||
| i2cl = None | ||
| try: | ||
| if int(self.i2c)==0: | ||
| i2cl = libhw.i2c0 | ||
| elif int(self.i2c)==1: | ||
| i2cl = libhw.i2c1 | ||
| except: | ||
| pass | ||
| try: | ||
| self._temp = AM2320(i2cl) | ||
| except Exception as e: | ||
| self.initialized = False | ||
| if self._temp is None: | ||
| self.initialized = False | ||
| if self.initialized: | ||
| misc.addLog(pglobals.LOG_LEVEL_INFO,"AM2320 initialized") | ||
| else: | ||
| misc.addLog(pglobals.LOG_LEVEL_ERROR,"AM2320 can not be initialized!") | ||
|
|
||
| def plugin_read(self): # deal with data processing at specified time interval | ||
| result = False | ||
| if self.initialized and self.readinprogress==0 and self.enabled: | ||
| self.readinprogress = 1 | ||
| try: | ||
| self._temp.measure() | ||
| temp = self._temp.temperature() | ||
| hum = self._temp.humidity() | ||
| if temp is not None and hum is not None: | ||
| self.set_value(1,temp,False) | ||
| self.set_value(2,hum,False) | ||
| except Exception as e: | ||
| misc.addLog(pglobals.LOG_LEVEL_ERROR,"AM2320 read error! "+str(e)) | ||
| self.plugin_senddata() | ||
| self._lastdataservetime = utime.ticks_ms() | ||
| result = True | ||
| self.readinprogress = 0 | ||
| return result | ||
|
|
||
| class AM2320: | ||
| def __init__(self, i2c=None, address=0x5c): | ||
| self.i2c = i2c | ||
| self.address = address | ||
| self.buf = bytearray(8) | ||
| def measure(self): | ||
| buf = self.buf | ||
| address = self.address | ||
| # wake sensor | ||
| try: | ||
| self.i2c.writeto(address, b'') | ||
| except OSError: | ||
| pass | ||
| # read 4 registers starting at offset 0x00 | ||
| self.i2c.writeto(address, b'\x03\x00\x04') | ||
| # wait at least 1.5ms | ||
| utime.sleep_ms(2) | ||
| # read data | ||
| self.i2c.readfrom_mem_into(address, 0, buf) | ||
| crc = ustruct.unpack('<H', bytearray(buf[-2:]))[0] | ||
| if (crc != self.crc16(buf[:-2])): | ||
| raise Exception("checksum error") | ||
| def crc16(self, buf): | ||
| crc = 0xFFFF | ||
| for c in buf: | ||
| crc ^= c | ||
| for i in range(8): | ||
| if crc & 0x01: | ||
| crc >>= 1 | ||
| crc ^= 0xA001 | ||
| else: | ||
| crc >>= 1 | ||
| return crc | ||
| def humidity(self): | ||
| return (self.buf[2] << 8 | self.buf[3]) * 0.1 | ||
| def temperature(self): | ||
| t = ((self.buf[4] & 0x7f) << 8 | self.buf[5]) * 0.1 | ||
| if self.buf[4] & 0x80: | ||
| t = -t | ||
| return t |
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