Add new IP-based time endpoint

[brentru]

This PR modifies the receive_time method to support the new time endpoint on Adafruit IO: /integrations/time/struct.json. This endpoint will return a time based on the IP Address.

The new receive_time returns the time as a struct_time(https://circuitpython.readthedocs.io/en/latest/shared-bindings/time/__init__.html#time.struct_time)

The previous /time endpoint returned a plaintext response, instead of json. Since the new endpoint returns a JSON response, this PR will remove the return_text kwarg from the HTTP _get method

[jerryneedell]

I did not see any example for this so I tried:

import board
import busio
from digitalio import DigitalInOut

# ESP32 SPI
from adafruit_esp32spi import adafruit_esp32spi, adafruit_esp32spi_wifimanager

# Import NeoPixel Library
import neopixel

# Import Adafruit IO REST Client
from adafruit_io.adafruit_io import RESTClient

# Get wifi details and more from a secrets.py file
try:
    from secrets import secrets
except ImportError:
    print("WiFi secrets are kept in secrets.py, please add them there!")
    raise


# PyPortal ESP32 Setup
esp32_cs = DigitalInOut(board.ESP_CS)
esp32_ready = DigitalInOut(board.ESP_BUSY)
esp32_reset = DigitalInOut(board.ESP_RESET)
spi = busio.SPI(board.SCK, board.MOSI, board.MISO)
esp = adafruit_esp32spi.ESP_SPIcontrol(spi, esp32_cs, esp32_ready, esp32_reset)
status_light = neopixel.NeoPixel(board.NEOPIXEL, 1, brightness=0.2)
wifi = adafruit_esp32spi_wifimanager.ESPSPI_WiFiManager(esp, secrets, status_light)


# Set your Adafruit IO Username and Key in secrets.py
# (visit io.adafruit.com if you need to create an account,
# or if you need your Adafruit IO key.)
ADAFRUIT_IO_USER = secrets['adafruit_io_user']
ADAFRUIT_IO_KEY = secrets['adafruit_io_key']

# Create an instance of the Adafruit IO REST client
io = RESTClient(ADAFRUIT_IO_USER, ADAFRUIT_IO_KEY, wifi)


print('Getting time from IO...')
time = io.receive_time()
print(time)

but it failed on a PyPortal:

Press any key to enter the REPL. Use CTRL-D to reload.
Adafruit CircuitPython 4.0.0-beta.3-15-gcfb54f026 on 2019-03-12; Adafruit PyPortal with samd51j20
>>> 
>>> import io_time
Getting time from IO...
Failed to connect, retrying
 ('No such ssid', b'Needell Airport')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "io_time.py", line 43, in <module>
  File "adafruit_io/adafruit_io.py", line 263, in receive_time
  File "adafruit_io/adafruit_io.py", line 118, in _get
  File "adafruit_esp32spi/adafruit_esp32spi_wifimanager.py", line 110, in get
  File "adafruit_esp32spi/adafruit_esp32spi_requests.py", line 235, in get
  File "adafruit_esp32spi/adafruit_esp32spi_requests.py", line 221, in request
  File "adafruit_esp32spi/adafruit_esp32spi_requests.py", line 176, in request
AttributeError: 'bytes' object has no attribute 'encode'

What did I miss?

[jerryneedell]

this breaks other examples -- like the one I ran for PR #17 same error.

Ah I see why -- When I pull this PR it undid the recently merged #17

How do I merge this with the latest master so I can test it?

[brentru]

@jerryneedell I rebased the pull request onto master. It should now contain changes from #17

[jerryneedell]

tested on pyportal with

import board
import busio
from digitalio import DigitalInOut

# ESP32 SPI
from adafruit_esp32spi import adafruit_esp32spi, adafruit_esp32spi_wifimanager

# Import NeoPixel Library
import neopixel

# Import Adafruit IO REST Client
from adafruit_io.adafruit_io import RESTClient

# Get wifi details and more from a secrets.py file
try:
    from secrets import secrets
except ImportError:
    print("WiFi secrets are kept in secrets.py, please add them there!")
    raise


# PyPortal ESP32 Setup
esp32_cs = DigitalInOut(board.ESP_CS)
esp32_ready = DigitalInOut(board.ESP_BUSY)
esp32_reset = DigitalInOut(board.ESP_RESET)
spi = busio.SPI(board.SCK, board.MOSI, board.MISO)
esp = adafruit_esp32spi.ESP_SPIcontrol(spi, esp32_cs, esp32_ready, esp32_reset)
status_light = neopixel.NeoPixel(board.NEOPIXEL, 1, brightness=0.2)
wifi = adafruit_esp32spi_wifimanager.ESPSPI_WiFiManager(esp, secrets, status_light)


# Set your Adafruit IO Username and Key in secrets.py
# (visit io.adafruit.com if you need to create an account,
# or if you need your Adafruit IO key.)
ADAFRUIT_IO_USER = secrets['adafruit_io_user']
ADAFRUIT_IO_KEY = secrets['adafruit_io_key']

# Create an instance of the Adafruit IO REST client
io = RESTClient(ADAFRUIT_IO_USER, ADAFRUIT_IO_KEY, wifi)


print('Getting time from IO...')
time = io.receive_time()
print(time)

responded ok:

Press any key to enter the REPL. Use CTRL-D to reload.
Adafruit CircuitPython 4.0.0-beta.3-15-gcfb54f026 on 2019-03-12; Adafruit PyPortal with samd51j20
>>> import io_time
Getting time from IO...
Failed to connect, retrying
 ('No such ssid', b'Needell Airport')
struct_time(tm_year=2019, tm_mon=3, tm_mday=12, tm_hour=21, tm_min=19, tm_sec=46, tm_wday=2, tm_yday=71, tm_isdst=1)

looks good.

[jerryneedell]

after rebase, both examples (time and weather) ran as expected.