From Eric

Latest revision as of 16:29, 21 August 2021

Install Home Assistant

In order to take benefits from all the features of Home Assistant on a RPi 4 (in particular, the add-ons), the best solution is to install HASSIO.

To communicate with the RPi after installation, the simplest solution is to connect it to your ethernet network using a cable. Then, you install the SSH and Web terminal add-on from the community repo. And then you can use the nmcli utility to setup your WiFi connection. Some explanations are given here:

 $ nmcli wifi rescan
 $ nmcli device wifi
 $ nmcli device wifi connect "YOUR_SSID" password "YOUR_WIFI_PASSWORD"

Install zigbee2mqtt

Configure the zigbee adapter

See https://www.zigbee2mqtt.io/information/flashing_the_cc2531.html

Install zigbee2mqtt

See https://www.zigbee2mqtt.io/

To mofidy the state of a device, refer to the zigbee2mqtt documentation for your device. For instance, for a 4-relay Tuya adapter:

 mosquitto_pub -t "zigbee2mqtt/relays/set" -m  '{"state_l1": "OFF"}'

start zigbee2mqtt automatically

See https://www.zigbee2mqtt.io/getting_started/running_zigbee2mqtt.html

 # Stopping Zigbee2MQTT
 sudo systemctl stop zigbee2mqtt

 # Starting Zigbee2MQTT
 sudo systemctl start zigbee2mqtt

 # View the log of Zigbee2MQTT
 sudo journalctl -u zigbee2mqtt.service -f

Zigbee sniffing

Install

• Texas Instruments SmartRF studio (I use smartrftm_studio-2.21.0)
• Texas instruments flash programmer (I use flash-programmer-1.12.8)
• Zboss (I use 2020_11_02_zboss_sniffer_windows_ubuntu_64bit)
• WireShark

The Zboss archive contains both the desktop application and the firmware to be programmed to the dongle.

Note that I have not managed to make ZBoss work on Linux.

On Linux, you’ll have to use cc-tools:

 git clone https://github.com/dashesy/cc-tool.git
 cd cc-tool
 ./bootstrap
 ./configure
 make

And to flash:

 sudo ./cc-tool -e -w <firmware>.hex

Instructions are given at https://www.zigbee2mqtt.io/how_tos/how_to_sniff_zigbee_traffic.html

(see also: https://www.hal9k.dk/sniffing-philips-hue-zigbee-traffic-with-wireshark/, https://www.youtube.com/watch?v=4vG4CVNAm_A,

Zigbee frames are encrypted.

To decrypt the frames, follow the following procedure:

Voir aussi : https://e2e.ti.com/support/wireless-connectivity/zigbee-thread-group/zigbee-and-thread/f/zigbee-thread-forum/218226/getting-started-with-the-cc2530

https://electronics.stackexchange.com/questions/158637/zigbee-firmware-for-cc2530-chips

Install an ESP32 CAM camera

To install an ePS32 CAM, the easiest way is to use the ESPhome firmware generator.

Installing ESPhome (e.g, on the Raspberry Pi server) is achieved as follows (see complete instructions here):

 pip3 install esphome

(The executable "esphome" is located at $HOME/.local/bin/)

Then, you have to connect physically your ESP32_CAM to the host using a serial adapter, according to the following diagram:

Then you have to create a configuration file. This can be done using the esphome wizard, or you can get your inspiration from the following one:

 esphome:
   name: esp32_cam_2
   platform: ESP32
   board: nodemcu-32s
 
 # Enable logging
 logger:
 
 # Enable Home Assistant API
 api:
   password: "xxxxxx"
 
 ota:
   password: "xxxxxx"
 
 wifi:
   ssid: "yyyyyy"
   password: "zzzzzz"
 
 # Enable fallback hotspot (captive portal) in case wifi connection fails
 ap:
   ssid: "Esp32 Cam 2 Fallback Hotspot"
   password: "aaaaaaaa"
 
 esp32_camera:
   external_clock:
     pin: GPIO0
     frequency: 20MHz
   i2c_pins:
     sda: GPIO26
     scl: GPIO27
   data_pins: [GPIO5, GPIO18, GPIO19, GPIO21, GPIO36, GPIO39, GPIO34, GPIO35]
   vsync_pin: GPIO25
   href_pin: GPIO23
   pixel_clock_pin: GPIO22
   power_down_pin: GPIO32
 
   # Image settings
   name: "CAM 2"
 
 text_sensor:
   - platform: version
     name: "ESPHome Version"
 
 switch:
   - platform: restart
     name: "ESP32 CAM 2 restart"
   - platform: gpio
     pin: 4
     name: "CAM 2 Flash"
   - platform: gpio
     pin: 2
     name: "CAM 2 LED"
 
 binary_sensor:
   - platform: status
     name: "CAM 2 Status"
 

Then, to upload the firmware to the ESP32CAM, type

~/.local/bin/esphome run <config file>.yaml

This will generate the firmware, compile it and uploadit to the ESP32CAM. The first time, the software will be uploaded via the serial line. Then the following updates can be done OTA.

Using CC2530 devices

The CC2530 chip provides zigbee connectivity. Unfortunately, to use the firmware, you need a non-free compiler (I don't remember which one).

Fortunately, the PTVO web site provides a free firmware generator: you give your configuration and it geerate the binary that just needs to be flashed using TI's programmer (see above).

Here is the configuration I use:

 Board type: CC2530 + CC2591
 Device type: Router
  Transmit enable (TXEN): P12Receive enable (RXEN): P14
 Update firmware's timestamp : 2021-08-13
 Status LED: P23 (Inversed), Periodic (every 5 seconds)
 Set default reporting interval (s): 60
 
 Output pins:
 P10: Output 1, GPIO, External pull-up
 P12: Output 2, GPIO, External pull-up
 P13: Output 3, GPIO, External pull-up
 P15: Output 4, GPIO, External pull-up
 P16: Output 5, GPIO, External pull-up
 P17: Output 6, GPIO, External pull-up
 P20: Output 7, GPIO, External pull-up
 P21: Output 8, GPIO, External pull-up
 
 Input pins:
 P00: Input 1, GPIO, Pull-up, Long, Double, Tripple
 P01: Input 2, GPIO, External pull-up
 P04: Input 3, GPIO, Pull-up
 P05: Input 4, GPIO, Pull-up

Joining the Zigbee network

In order for the device to be detected by ZigbeeToMqtt, you have either to reflash the firmware, "Power on, wait 2 seconds, power off, repeat this cycle three times.", "Power on, press and hold down the button on “Input 1” for 10 seconds". More info are given here .

Alexa

Discover devices

Start the Alexa app and say "Alexa, discover devices".