Reduction of memory use and fragmentation
Add onbaord LED as "read-only flash" indicator
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Pierrick C
parent
2a1aae6da8
commit
f07f998771
@ -44,7 +44,7 @@ neopixel_max_value =const(70) #max value instead of brightness to spare some
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#######################
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import board, microcontroller
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import microcontroller
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import gc, os
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# import micropython
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import time, rtc
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@ -63,59 +63,57 @@ import neopixel
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class Data:
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"""Class for handling data"""
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def __init__(self):
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self.data = {'SYS': {'time': {'val': "2000/01/01_00:00:00", 'unit': '' },
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'vbat': {'val': int(), 'unit': 'V' },
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'CPUtemp': {'val': float(), 'unit': '°C' }},
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'BME280': {'temp': { 'val': float(), 'unit': '°C' },
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'hum': { 'val': int(), 'unit': '%' },
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'press': { 'val': float(), 'unit': 'hPa' }},
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'GPS': {'timestamp': {'val': "2000/01/01_00:00:00", 'unit': ''},
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'lat': {'val': float(), 'unit': 'deg'},
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'lon': {'val': float(), 'unit': 'deg'},
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'alt': {'val': float(), 'unit': 'm'},
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'qual': {'val': int(), 'unit': ''}}
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self.data = {'SYS': {'time': "2000/01/01_00:00:00",
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'vbat': int(),
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'cput': float()},
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'BME': {'temp': float(),
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'hum': int(),
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'press': float()},
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'GPS': {'time': "2000/01/01_00:00:00",
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'lat': float(),
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'lon': float(),
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'alt': float(),
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'qual': int()}
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}
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def update(self):
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"""Read the data from various sensors and update the data dict variable"""
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#Data from Feather board
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self.data['SYS']['time']['val'] = datetime_format.format(*clock.datetime[0:6])
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self.data['SYS']['vbat']['val'] = round(measure_vbat(), 3)
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self.data['SYS']['CPUtemp']['val'] = round(microcontroller.cpu.temperature, 2)
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self.data['SYS']['time'] = datetime_format.format(*clock.datetime[0:6])
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self.data['SYS']['vbat'] = round(measure_vbat(), 3)
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self.data['SYS']['cput'] = round(microcontroller.cpu.temperature, 2)
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#Data from BME280
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self.data['BME280']['temp']['val'] = round(bme280.temperature, 1)
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self.data['BME280']['hum']['val'] = int(bme280.humidity)
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self.data['BME280']['press']['val'] = round(bme280.pressure, 2)
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self.data['BME']['temp'] = round(bme280.temperature, 1)
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self.data['BME']['hum'] = int(bme280.humidity)
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self.data['BME']['press'] = round(bme280.pressure, 2)
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if gps_enable:
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if gps.has_fix:
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self.data['GPS']['timestamp']['val'] = datetime_format.format(gps.timestamp_utc.tm_year,
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self.data['GPS']['time'] = datetime_format.format(gps.timestamp_utc.tm_year,
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gps.timestamp_utc.tm_mon,
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gps.timestamp_utc.tm_mday,
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gps.timestamp_utc.tm_hour,
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gps.timestamp_utc.tm_min,
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gps.timestamp_utc.tm_sec)
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self.data['GPS']['lat']['val'] = gps.latitude
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self.data['GPS']['lon']['val'] = gps.longitude
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self.data['GPS']['alt']['val'] = gps.altitude_m
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self.data['GPS']['qual']['val'] = gps.fix_quality
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self.data['GPS']['lat'] = gps.latitude
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self.data['GPS']['lon'] = gps.longitude
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self.data['GPS']['alt'] = gps.altitude_m
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self.data['GPS']['qual'] = gps.fix_quality
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else:
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self.data['GPS']['lat']['val'] = None
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self.data['GPS']['lon']['val'] = None
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self.data['GPS']['alt']['val'] = None
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self.data['GPS']['lat'] = None
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self.data['GPS']['lon'] = None
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self.data['GPS']['alt'] = None
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else:
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self.data['GPS'] = None
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def show(self):
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"""Serialize data to json-formatted string for visualization on
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serial console
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"""
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"""Serialize data for visualization on serial console"""
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for source in self.data.keys():
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print(source + ": ")
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if not self.data[source] == None:
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for d in self.data[source].items():
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print("\t{0}: {val} {unit}".format(d[0], **d[1]))
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print("\t{0}: {1}".format(d[0], d[1]))
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def json(self):
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"""Serialize data to json-formatted string"""
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@ -124,31 +122,27 @@ class Data:
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output = "".join((output, "'", source, "': \n"))
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if not self.data[source] == None:
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for d in self.data[source].items():
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output = "".join((output, "{",
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"'{}': ".format(d[0]),
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"{",
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"'val': {val},'unit': {unit}".format(**d[1]),
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"}}\n"))
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output = "".join((output, " {'{}': '{}'}}\n".format(d[0], d[1])))
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output = output + "}, \n"
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output = output + "}"
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return output
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def atmo2rgb(self):
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"""Congreen atmospheric data from BME280 sensor into NeoPixel color
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"""Convert atmospheric data from BME280 sensor into NeoPixel color
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* RED => temperature : max = 35degC, min =10degC (range 25°C)
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* BLUE => humidity : max= 100%, mini=0%
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* GREEN => pression : mini=960hPa, maxi = 1030hPa (range 70hPa)
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"""
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red = int((self.data['BME280']['temp']['val']-10)*neopixel_max_value/25)
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red = int((self.data['BME']['temp']-10)*neopixel_max_value/25)
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if red > neopixel_max_value:
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red = neopixel_max_value
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if red < 0:
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red = 0
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blue = int(self.data['BME280']['hum']['val']*neopixel_max_value/100)
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blue = int(self.data['BME']['hum']*neopixel_max_value/100)
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green = int((self.data['BME280']['press']['val']-960)*neopixel_max_value/70)
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green = int((self.data['BME']['press']-960)*neopixel_max_value/70)
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if green > neopixel_max_value:
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green = neopixel_max_value
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if green < 0:
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@ -163,14 +157,14 @@ class Data:
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"""Save the current data as csv file on SPI flash"""
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try:
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with open("data/data.csv", "a") as csv_file:
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csv_file.write("{};{};{};{}\n".format(self.data['SYS']['time']['val'],
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self.data['BME280']['temp']['val'],
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self.data['BME280']['hum']['val'],
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self.data['BME280']['press']['val']))
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csv_file.write("{};{};{};{}\n".format(self.data['SYS']['time'],
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self.data['BME']['temp'],
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self.data['BME']['hum'],
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self.data['BME']['press']))
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except OSError as e:
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print("Err. {} : R-O FS".format(e))
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print("Err {}: readonly".format(e))
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backup_data = False #to avoid trying again till next reset
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led13.value = True
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#############
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# Functions #
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@ -229,22 +223,27 @@ clock = rtc.RTC()
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#clock.datetime = time.struct_time((2018, 7, 29, 15, 31, 30, 0, 0, 0))
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# BME280 sensors (I2C)
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i2c = I2C(board.SCL, board.SDA)
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i2c = I2C(microcontroller.pin.PA23, microcontroller.pin.PA22)
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# i2c addresses for BME280 breakout :
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# 0x77 = adafruit breakout board
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# 0x76 = tiny chinese board
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bme280 = Adafruit_BME280_I2C(i2c, address=0x76)
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# Battery voltage
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vbat = AnalogIn(board.D9, )
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vbat = AnalogIn(microcontroller.pin.PA07)
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gps_en_pin = DigitalInOut(board.A5)
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gps_en_pin = DigitalInOut(microcontroller.pin.PB02)
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gps_en_pin.direction = Direction.OUTPUT
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led13 = DigitalInOut(microcontroller.pin.PA17)
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led13.direction = Direction.OUTPUT
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led13.value = False
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# GPS on FeatherWing board
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gps_en_pin.value = not gps_enable
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if gps_enable:
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gps_uart = UART(board.TX, board.RX, baudrate=9600, timeout=3000)
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gps_uart = UART(microcontroller.pin.PA10, microcontroller.pin.PA11,
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baudrate=9600, timeout=3000)
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gps = GPS(gps_uart)
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# Turn on the basic GGA and RMC info
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gps.send_command('PMTK314,0,1,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0')
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@ -252,10 +251,10 @@ if gps_enable:
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# Integrated Neopixel
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if data_to_neopixel:
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pixel = neopixel.NeoPixel(board.NEOPIXEL, 1, brightness=1)
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pixel = neopixel.NeoPixel(microcontroller.pin.PA06, 1, brightness=1)
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else:
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#if neopixel is disable : turn off the LED
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pixel = neopixel.NeoPixel(board.NEOPIXEL, 1, brightness=1)
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pixel = neopixel.NeoPixel(microcontroller.pin.PA06, 1, brightness=1)
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pixel[0] = (0,0,0)
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pixel = None
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