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<title><![CDATA[Home Assistant]]></title>
<link href="https://home-assistant.io/atom.xml" rel="self"/>
<link href="https://home-assistant.io/"/>
<updated>2016-08-29T19:27:40+00:00</updated>
<updated>2016-08-29T19:50:52+00:00</updated>
<id>https://home-assistant.io/</id>
<author>
<name><![CDATA[Home Assistant]]></name>

View file

@ -93,8 +93,12 @@
<ul class="tags unstyled">
<li>ESP8266</li>
<li>How-To</li>
<li>Micropython</li>
</ul>
</span>

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@ -2488,8 +2488,12 @@
<ul class="tags unstyled">
<li>ESP8266</li>
<li>How-To</li>
<li>Micropython</li>
</ul>
</span>

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@ -4,7 +4,7 @@
<title><![CDATA[Category: Community | Home Assistant]]></title>
<link href="https://home-assistant.io/blog/categories/community/atom.xml" rel="self"/>
<link href="https://home-assistant.io/"/>
<updated>2016-08-29T19:27:40+00:00</updated>
<updated>2016-08-29T19:50:52+00:00</updated>
<id>https://home-assistant.io/</id>
<author>
<name><![CDATA[Home Assistant]]></name>

View file

@ -4,7 +4,7 @@
<title><![CDATA[Category: Device-Tracking | Home Assistant]]></title>
<link href="https://home-assistant.io/blog/categories/device-tracking/atom.xml" rel="self"/>
<link href="https://home-assistant.io/"/>
<updated>2016-08-29T19:27:40+00:00</updated>
<updated>2016-08-29T19:50:52+00:00</updated>
<id>https://home-assistant.io/</id>
<author>
<name><![CDATA[Home Assistant]]></name>

View file

@ -4,7 +4,7 @@
<title><![CDATA[Category: ESP8266 | Home Assistant]]></title>
<link href="https://home-assistant.io/blog/categories/esp8266/atom.xml" rel="self"/>
<link href="https://home-assistant.io/"/>
<updated>2016-08-29T19:27:40+00:00</updated>
<updated>2016-08-29T19:50:52+00:00</updated>
<id>https://home-assistant.io/</id>
<author>
<name><![CDATA[Home Assistant]]></name>
@ -13,6 +13,165 @@
<generator uri="http://octopress.org/">Octopress</generator>
<entry>
<title type="html"><![CDATA[ESP8266 and MicroPython - Part 1]]></title>
<link href="https://home-assistant.io/blog/2016/07/28/esp8266-and-micropython-part1/"/>
<updated>2016-07-28T04:00:00+00:00</updated>
<id>https://home-assistant.io/blog/2016/07/28/esp8266-and-micropython-part1</id>
<content type="html"><![CDATA[<img src='https://home-assistant.io/images/blog/2016-07-micropython/micropython.png' style='clear: right; border:none; box-shadow: none; float: right; margin-bottom: 12px;' width='200' />
The first release of Micropython for ESP8266 was delivered a couple of weeks ago. The [documentation](http://docs.micropython.org/en/latest/esp8266/esp8266_contents.html) covers a lot of ground. This post is providing only a little summary which should get you started.
Until a couple of weeks ago, the pre-built MicroPython binary for the ESP8266 was only available to backers. This has changed now and it is available to the public for [download](https://micropython.org/download/#esp8266).
<!--more-->
The easiest way is to use [esptool.py](https://github.com/themadinventor/esptool) for firmware handling tasks. First erase the flash:
```bash
$ sudo python esptool.py --port /dev/ttyUSB0 erase_flash
esptool.py v1.0.2-dev
Connecting...
Erasing flash (this may take a while)...
```
and then load the firmware. You may adjust the file name of the firmware binary.
```bash
$ sudo python esptool.py --port /dev/ttyUSB0 --baud 460800 write_flash --flash_size=8m 0 esp8266-2016-07-10-v1.8.2.bin
esptool.py v1.2-dev
Connecting...
Running Cesanta flasher stub...
Flash params set to 0x0020
Writing 540672 @ 0x0... 540672 (100 %)
Wrote 540672 bytes at 0x0 in 13.1 seconds (330.8 kbit/s)...
Leaving...
```
Now reset the device. You should then be able to use the [REPL (Read Evaluate Print Loop)](http://docs.micropython.org/en/latest/esp8266/esp8266/tutorial/repl.html#getting-a-micropython-repl-prompt). On Linux there is `minicom` or `picocom`, on a Mac you can use `screen` (eg. `screen /dev/tty.SLAB_USBtoUART 115200`), and on Windows there is Putty to open a serial connection and get the REPL prompt.
The [WebREPL](http://docs.micropython.org/en/latest/esp8266/esp8266/tutorial/repl.html#webrepl-a-prompt-over-wifi) work over a wireless connection and allows easy access to a prompt in your browser. An instance of the WebREPL client is hosted at [http://micropython.org/webrepl](http://micropython.org/webrepl). Alternatively, you can create a local clone of their [GitHub repository](https://github.com/micropython/webrepl). This is neccessary if your want to use the command-line tool `webrepl_cli.py` which is mentionend later in this post.
```bash
$ sudo minicom -D /dev/ttyUSB0
#4 ets_task(4020e374, 29, 3fff70e8, 10)
WebREPL daemon started on ws://192.168.4.1:8266
Started webrepl in setup mode
could not open file 'main.py' for reading
#5 ets_task(4010035c, 3, 3fff6360, 4)
MicroPython v1.8.2-9-g805c2b9 on 2016-07-10; ESP module with ESP8266
Type "help()" for more information.
>>>
```
<p class='note'>
The public build of the firmware may be different than the firmware distributed to the backers of the campaign. Especially in regard of the [available modules](http://docs.micropython.org/en/latest/esp8266/py-modindex.html), turned on debug messages, and alike. Also, the WebREPL may not be started by default.
</p>
Connect a LED to pin 5 (or another pin of your choosing) to check if the ESP8266 is working as expected.
```python
>>> import machine
>>> pin = machine.Pin(5, machine.Pin.OUT)
>>> pin.high()
```
You can toogle the LED by changing its state with `pin.high()` and `pin.low()`.
Various ESP8266 development board are shipped with an onboard photocell or a light dependent resistors (LDR) connected to the analog pin of your ESP8266 check if you are able to obtain a value.
```python
>>> import machine
>>> brightness = machine.ADC(0)
>>> brightness.read()
```
Make sure that you are familiar with REPL and WebREPL because this will be needed soon. Keep in mind the password for the WebREPL access.
Read the [instructions](http://docs.micropython.org/en/latest/esp8266/esp8266/tutorial/network_basics.html) about how to setup your wireless connection. Basically you need to upload a `boot.py` file to the microcontroller and this file is taking care of the connection setup. Below you find a sample which is more or less the same as shown in the [documentation](http://docs.micropython.org/en/latest/esp8266/esp8266/tutorial/network_basics.html#configuration-of-the-wifi).
```python
def do_connect():
import network
SSID = 'SSID'
PASSWORD = 'PASSWORD'
sta_if = network.WLAN(network.STA_IF)
ap_if = network.WLAN(network.AP_IF)
if ap_if.active():
ap_if.active(False)
if not sta_if.isconnected():
print('connecting to network...')
sta_if.active(True)
sta_if.connect(SSID, PASSWORD)
while not sta_if.isconnected():
pass
print('Network configuration:', sta_if.ifconfig())
```
Upload this file with `webrepl_cli.py` or the WebREPL:
```bash
$ python webrepl_cli.py boot.py 192.168.4.1:/boot.py
```
If you reboot, you should see your current IP address in the terminal.
```bash
>>> Network configuration: ('192.168.0.10', '255.255.255.0', '192.168.0.1', '192.168.0.1')
```
First let's create a little consumer for Home Assistant sensor's state. The code to place in `main.py` is a mixture of code from above and the [RESTful API](/developers/rest_api/) of Home Assistant. If the temperature in the kitchen is higher than 20 °C then the LED connected to pin 5 is switched on.
<p class='note'>
If a module is missing then you need to download is it from [MicroPython Library overview](https://github.com/micropython/micropython-lib) and upload it to the ESP8266 with `webrepl_cli.py` manually.
</p>
```python
# Sample code to request the state of a Home Assistant entity.
API_PASSWORD = 'YOUR_PASSWORD'
URL = 'http://192.168.0.5:8123/api/states/'
ENTITY = 'sensor.kitchen_temperature'
TIMEOUT = 30
PIN = 5
def get_data():
import urequests
url = '{}{}'.format(URL, ENTITY)
headers = {'x-ha-access': API_PASSWORD,
'content-type': 'application/json'}
resp = urequests.get(URL, headers=headers)
return resp.json()['state']
def main():
import machine
import time
pin = machine.Pin(PIN, machine.Pin.OUT)
while True:
try:
if int(get_data()) >= 20:
pin.high()
else:
pin.low()
except TypeError:
pass
time.sleep(TIMEOUT)
if __name__ == '__main__':
print('Get the state of {}'.format(ENTITY))
main()
```
Upload `main.py` the same way as `boot.py`. After a reboot (`>>> import machine` and `>>> machine.reboot()`) or power-cycling your physical notifier is ready.
If you run into trouble, press "Ctrl+c" in the REPL to stop the execution of the code, enter `>>> import webrepl` and `>>> webrepl.start()`, and upload your fixed file.
]]></content>
</entry>
<entry>
<title type="html"><![CDATA[Report the temperature with ESP8266 to MQTT]]></title>
<link href="https://home-assistant.io/blog/2015/10/11/measure-temperature-with-esp8266-and-report-to-mqtt/"/>

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@ -96,6 +96,45 @@
<h2>2016</h2>
<article>
<div class="grid">
<div class="grid__item one-fifth palm-one-whole">
<time datetime="2016-07-28T04:00:00+00:00" pubdate>
<span class='month'>Jul</span> <span class='day'>28</span>
</time>
</div>
<div class="grid__item four-fifths palm-one-whole">
<h1 class="gamma"><a href="/blog/2016/07/28/esp8266-and-micropython-part1/">ESP8266 and MicroPython - Part 1</a></h1>
<footer class="meta">
<span>
<i class="icon-tags"></i>
<ul class="tags unstyled">
<li><a class='category' href='/blog/categories/esp8266/'>ESP8266</a></li>
<li><a class='category' href='/blog/categories/how-to/'>How-To</a></li>
<li><a class='category' href='/blog/categories/micropython/'>Micropython</a></li>
</ul>
</span>
</footer>
<hr class="divider">
</div>
</div>
</article>
<h2>2015</h2>
<article>

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@ -4,7 +4,7 @@
<title><![CDATA[Category: How-To | Home Assistant]]></title>
<link href="https://home-assistant.io/blog/categories/how-to/atom.xml" rel="self"/>
<link href="https://home-assistant.io/"/>
<updated>2016-08-29T19:27:40+00:00</updated>
<updated>2016-08-29T19:50:52+00:00</updated>
<id>https://home-assistant.io/</id>
<author>
<name><![CDATA[Home Assistant]]></name>

View file

@ -181,8 +181,12 @@
<ul class="tags unstyled">
<li><a class='category' href='/blog/categories/esp8266/'>ESP8266</a></li>
<li><a class='category' href='/blog/categories/how-to/'>How-To</a></li>
<li><a class='category' href='/blog/categories/micropython/'>Micropython</a></li>
</ul>
</span>

View file

@ -4,7 +4,7 @@
<title><![CDATA[Category: iBeacons | Home Assistant]]></title>
<link href="https://home-assistant.io/blog/categories/ibeacons/atom.xml" rel="self"/>
<link href="https://home-assistant.io/"/>
<updated>2016-08-29T19:27:40+00:00</updated>
<updated>2016-08-29T19:50:52+00:00</updated>
<id>https://home-assistant.io/</id>
<author>
<name><![CDATA[Home Assistant]]></name>

View file

@ -4,7 +4,7 @@
<title><![CDATA[Category: Internet-of-Things | Home Assistant]]></title>
<link href="https://home-assistant.io/blog/categories/internet-of-things/atom.xml" rel="self"/>
<link href="https://home-assistant.io/"/>
<updated>2016-08-29T19:27:40+00:00</updated>
<updated>2016-08-29T19:50:52+00:00</updated>
<id>https://home-assistant.io/</id>
<author>
<name><![CDATA[Home Assistant]]></name>

View file

@ -4,7 +4,7 @@
<title><![CDATA[Category: IoT-Data | Home Assistant]]></title>
<link href="https://home-assistant.io/blog/categories/iot-data/atom.xml" rel="self"/>
<link href="https://home-assistant.io/"/>
<updated>2016-08-29T19:27:40+00:00</updated>
<updated>2016-08-29T19:50:52+00:00</updated>
<id>https://home-assistant.io/</id>
<author>
<name><![CDATA[Home Assistant]]></name>

View file

@ -0,0 +1,175 @@
<?xml version="1.0" encoding="utf-8"?>
<feed xmlns="http://www.w3.org/2005/Atom">
<title><![CDATA[Category: Micropython | Home Assistant]]></title>
<link href="https://home-assistant.io/blog/categories/micropython/atom.xml" rel="self"/>
<link href="https://home-assistant.io/"/>
<updated>2016-08-29T19:50:52+00:00</updated>
<id>https://home-assistant.io/</id>
<author>
<name><![CDATA[Home Assistant]]></name>
</author>
<generator uri="http://octopress.org/">Octopress</generator>
<entry>
<title type="html"><![CDATA[ESP8266 and MicroPython - Part 1]]></title>
<link href="https://home-assistant.io/blog/2016/07/28/esp8266-and-micropython-part1/"/>
<updated>2016-07-28T04:00:00+00:00</updated>
<id>https://home-assistant.io/blog/2016/07/28/esp8266-and-micropython-part1</id>
<content type="html"><![CDATA[<img src='https://home-assistant.io/images/blog/2016-07-micropython/micropython.png' style='clear: right; border:none; box-shadow: none; float: right; margin-bottom: 12px;' width='200' />
The first release of Micropython for ESP8266 was delivered a couple of weeks ago. The [documentation](http://docs.micropython.org/en/latest/esp8266/esp8266_contents.html) covers a lot of ground. This post is providing only a little summary which should get you started.
Until a couple of weeks ago, the pre-built MicroPython binary for the ESP8266 was only available to backers. This has changed now and it is available to the public for [download](https://micropython.org/download/#esp8266).
<!--more-->
The easiest way is to use [esptool.py](https://github.com/themadinventor/esptool) for firmware handling tasks. First erase the flash:
```bash
$ sudo python esptool.py --port /dev/ttyUSB0 erase_flash
esptool.py v1.0.2-dev
Connecting...
Erasing flash (this may take a while)...
```
and then load the firmware. You may adjust the file name of the firmware binary.
```bash
$ sudo python esptool.py --port /dev/ttyUSB0 --baud 460800 write_flash --flash_size=8m 0 esp8266-2016-07-10-v1.8.2.bin
esptool.py v1.2-dev
Connecting...
Running Cesanta flasher stub...
Flash params set to 0x0020
Writing 540672 @ 0x0... 540672 (100 %)
Wrote 540672 bytes at 0x0 in 13.1 seconds (330.8 kbit/s)...
Leaving...
```
Now reset the device. You should then be able to use the [REPL (Read Evaluate Print Loop)](http://docs.micropython.org/en/latest/esp8266/esp8266/tutorial/repl.html#getting-a-micropython-repl-prompt). On Linux there is `minicom` or `picocom`, on a Mac you can use `screen` (eg. `screen /dev/tty.SLAB_USBtoUART 115200`), and on Windows there is Putty to open a serial connection and get the REPL prompt.
The [WebREPL](http://docs.micropython.org/en/latest/esp8266/esp8266/tutorial/repl.html#webrepl-a-prompt-over-wifi) work over a wireless connection and allows easy access to a prompt in your browser. An instance of the WebREPL client is hosted at [http://micropython.org/webrepl](http://micropython.org/webrepl). Alternatively, you can create a local clone of their [GitHub repository](https://github.com/micropython/webrepl). This is neccessary if your want to use the command-line tool `webrepl_cli.py` which is mentionend later in this post.
```bash
$ sudo minicom -D /dev/ttyUSB0
#4 ets_task(4020e374, 29, 3fff70e8, 10)
WebREPL daemon started on ws://192.168.4.1:8266
Started webrepl in setup mode
could not open file 'main.py' for reading
#5 ets_task(4010035c, 3, 3fff6360, 4)
MicroPython v1.8.2-9-g805c2b9 on 2016-07-10; ESP module with ESP8266
Type "help()" for more information.
>>>
```
<p class='note'>
The public build of the firmware may be different than the firmware distributed to the backers of the campaign. Especially in regard of the [available modules](http://docs.micropython.org/en/latest/esp8266/py-modindex.html), turned on debug messages, and alike. Also, the WebREPL may not be started by default.
</p>
Connect a LED to pin 5 (or another pin of your choosing) to check if the ESP8266 is working as expected.
```python
>>> import machine
>>> pin = machine.Pin(5, machine.Pin.OUT)
>>> pin.high()
```
You can toogle the LED by changing its state with `pin.high()` and `pin.low()`.
Various ESP8266 development board are shipped with an onboard photocell or a light dependent resistors (LDR) connected to the analog pin of your ESP8266 check if you are able to obtain a value.
```python
>>> import machine
>>> brightness = machine.ADC(0)
>>> brightness.read()
```
Make sure that you are familiar with REPL and WebREPL because this will be needed soon. Keep in mind the password for the WebREPL access.
Read the [instructions](http://docs.micropython.org/en/latest/esp8266/esp8266/tutorial/network_basics.html) about how to setup your wireless connection. Basically you need to upload a `boot.py` file to the microcontroller and this file is taking care of the connection setup. Below you find a sample which is more or less the same as shown in the [documentation](http://docs.micropython.org/en/latest/esp8266/esp8266/tutorial/network_basics.html#configuration-of-the-wifi).
```python
def do_connect():
import network
SSID = 'SSID'
PASSWORD = 'PASSWORD'
sta_if = network.WLAN(network.STA_IF)
ap_if = network.WLAN(network.AP_IF)
if ap_if.active():
ap_if.active(False)
if not sta_if.isconnected():
print('connecting to network...')
sta_if.active(True)
sta_if.connect(SSID, PASSWORD)
while not sta_if.isconnected():
pass
print('Network configuration:', sta_if.ifconfig())
```
Upload this file with `webrepl_cli.py` or the WebREPL:
```bash
$ python webrepl_cli.py boot.py 192.168.4.1:/boot.py
```
If you reboot, you should see your current IP address in the terminal.
```bash
>>> Network configuration: ('192.168.0.10', '255.255.255.0', '192.168.0.1', '192.168.0.1')
```
First let's create a little consumer for Home Assistant sensor's state. The code to place in `main.py` is a mixture of code from above and the [RESTful API](/developers/rest_api/) of Home Assistant. If the temperature in the kitchen is higher than 20 °C then the LED connected to pin 5 is switched on.
<p class='note'>
If a module is missing then you need to download is it from [MicroPython Library overview](https://github.com/micropython/micropython-lib) and upload it to the ESP8266 with `webrepl_cli.py` manually.
</p>
```python
# Sample code to request the state of a Home Assistant entity.
API_PASSWORD = 'YOUR_PASSWORD'
URL = 'http://192.168.0.5:8123/api/states/'
ENTITY = 'sensor.kitchen_temperature'
TIMEOUT = 30
PIN = 5
def get_data():
import urequests
url = '{}{}'.format(URL, ENTITY)
headers = {'x-ha-access': API_PASSWORD,
'content-type': 'application/json'}
resp = urequests.get(URL, headers=headers)
return resp.json()['state']
def main():
import machine
import time
pin = machine.Pin(PIN, machine.Pin.OUT)
while True:
try:
if int(get_data()) >= 20:
pin.high()
else:
pin.low()
except TypeError:
pass
time.sleep(TIMEOUT)
if __name__ == '__main__':
print('Get the state of {}'.format(ENTITY))
main()
```
Upload `main.py` the same way as `boot.py`. After a reboot (`>>> import machine` and `>>> machine.reboot()`) or power-cycling your physical notifier is ready.
If you run into trouble, press "Ctrl+c" in the REPL to stop the execution of the code, enter `>>> import webrepl` and `>>> webrepl.start()`, and upload your fixed file.
]]></content>
</entry>
</feed>

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@ -0,0 +1,271 @@
<!doctype html>
<!--[if lt IE 7]> <html class="no-js lt-ie9 lt-ie8 lt-ie7"> <![endif]-->
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<h2>2016</h2>
<article>
<div class="grid">
<div class="grid__item one-fifth palm-one-whole">
<time datetime="2016-07-28T04:00:00+00:00" pubdate>
<span class='month'>Jul</span> <span class='day'>28</span>
</time>
</div>
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<h1 class="gamma"><a href="/blog/2016/07/28/esp8266-and-micropython-part1/">ESP8266 and MicroPython - Part 1</a></h1>
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@ -918,6 +922,8 @@ One of the graphs created with this tutorial.
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@ -852,6 +852,8 @@ In the past month I was thinking about ways to integrate USB webcams into Home A
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@ -811,6 +811,8 @@
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@ -890,6 +890,8 @@ Hold your NFC tag against the belly of Garfield to unlock the alarm.
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@ -714,6 +714,8 @@ The <a href="https://influxdb.com/">InfluxDB</a> database is a so-called time se
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@ -754,6 +754,8 @@ Andythigpen has contributed a script component. This allows users to create a se
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@ -706,6 +706,8 @@ This article will try to explain how they all relate.</p>
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