1. definition of new function:
def suma(a,b): # simple addition
... return(a+b)
>>> suma(1,2)
3
2. "built_in sensors" - temperature and magnetic (hall)
import esp32
esp32.raw_temperature()
127
def f2c(Fahrenheit):
Celsius = (Fahrenheit - 32) * 5.0/9.0
return Celsius
f2c(esp32.raw_temperature())
esp32.hall_sensor()
129
esp32.hall_sensor()
976 > magnetic
3. WS led colors
from util.octopus import ws, RED
ws.color(RED)
ws.color((128,0,0))
WHITE = (128,128,128)
BLACK = (0,0,0)
ws.color(WHITE)
ws.color(BLACK)
ws.simpleTest()
ws.rainbow_cycle()
from util.rgb import wheel # number to color
wheel(10)
(225, 30, 0)
wheel(50)
(105, 150, 0)
from util.rgb import random_color
while True:
ws.color(random_color())
sleep(0.3)
4. API (Application programming interface)
Color from Twitter? Last hashtag: #cheerlights
API: http://api.thingspeak.com/channels/1417/field/2/last.txt
>> #octopusLAB and #micropython example #cheerlights orange
from util.octopus import w
w()
from examples.twitter_rgb import twitter_rgb
ws.color(twitter_rgb())
Bitcoin price?
from examples.get_bitcoin import bitcoin_usd
price = bitcoin_usd()
from api:
https://api.coinmarketcap.com/v1/ticker/bitcoin/
5. Display
setup() > ios > display7 >> 1
from util.octopus import disp7_init
d7 = disp7_init()
d7.show(123)
6. clock
from util.octopus import *
ls("examples") # list subdir. files
cat("examples/clock.py") # list code
cp("examples/clock.py") # file copy - default to main
7. new bmp280 example
from examples.bmp280 import bmp_init
bmp = bmp_init()
t = bmp.temperature
d7.show(t)
d7.show(str(t)+"C")
def action(temp):
if temp > 20:
ws.color(RED)
else:
ws.color(BLUE)
Influx:
from time import sleep
from util.octopus import w
from util.database.influxdb import InfluxDB
from examples.bmp280 import bmp_init
bmp = bmp_init()
url = 'https://parallelgarden.surikata.info:8086'
influx = InfluxDB(url, 'workshop', 'student', 'octopus19')
team = 'pivo'
w()
while True:
t = bmp.temperature
p = bmp.pressure
influx.write('meteo', {'team': team}, temperature= t, pressure= p)
print(t, pressure= p)
sleep(10)
-----------------------------------
from util.octopus import *
cat("examples/workshop-iot1.py")
ESP32
from util.octopus import w
w()
from util.database.influxdb import InfluxDB
influx = InfluxDB(‚https://parallelgarden.surikata.info:8086‘, ‚workshop‘, ‚student‘, ‚octopus19‘)
team = ‚pivo‘
Influx sample:
from util.octopus import w
w()
from util.database.influxdb import InfluxDB
url = 'https://parallelgarden.surikata.info:8086'
influx = InfluxDB(url, 'workshop', 'student', 'octopus19')
team = 'pivo'
influx.write('meteo', {'team': team}, temperature=20, pressure=90000)
Complete
import urequests
from time import sleep
from bmp280 import BMP280
from util.octopus import i2c_init
from util.octopus import w #, web_server
w()
from util.database.influxdb import InfluxDB
i2c = i2c_init(1,100000,-1)
bmp = BMP280(i2c)
influx = InfluxDB("influx_url", "dbname", "username", "password")
influx = InfluxDB("https://parallelgarden.surikata.info:8086", "workshop", "student", "octopus19")
u = 'https://parallelgarden.surikata.info:8086/write?db=workshop&u=student&p=octopus19'
while True:
t = bmp.temperature
p = bmp.pressure
influx.write("meteo", {'team':'pivo'}, temperature=t, pressure=p)
sleep(5)