http://piscina-online.blogspot.com.br/p/como-medir-o-ph-da-piscina.html
http://www.greenpower.net.br/blog/?p=354
Categoria: Sem categoria
C Programming Intel Edison
Compiling:
gcc -g analog_input.c -o analog_input -lmraa
To use MRAA the linker needs to receive this -lmraa.
Updating Intel Edison’s Nodejs to 0.12.7
After trying alot of things, nothing worked. Using NVM doesnt work. But here is the solution:
vi /etc/opkg/base-feeds.conf
The file will be empty. Put this on the file and save:
src/gz all http://repo.opkg.net/edison/repo/all src/gz edison http://repo.opkg.net/edison/repo/edison src/gz core2-32 http://repo.opkg.net/edison/repo/core2-32
Now follow this commands:
opkg update opkg install nodejs
After all the work, that is very fast, you will get this:
root@edison:~# node -v v0.12.7
Now, let's see if the segmentation faults will stop. 🙂
Here is the source: http://alextgalileo.altervista.org/edison-package-repo-configuration-instructions.html
And here is the packages that you can get there: http://repo.opkg.net/edison/repo/core2-32/
Scanning i2c on Intel Edison to find a new device
i2cdetect -a -r 6
This will result all the devices addresses that returned the scanning probe.
root@edison:/home# i2cdetect -a -r 6
WARNING! This program can confuse your I2C bus, cause data loss and worse!
I will probe file /dev/i2c-6 using read byte commands.
I will probe address range 0x00-0x7f.
Continue? [Y/n] y
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- 3c -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- 53 -- -- -- 57 -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
root@edison:/home#
This time I was look for the 0x57 device, that I recently connected to the i2c bus.
Get the device data:
i2cdump -y -f 6 0x57
The result:
root@edison:~# i2cdump -y -f 6 0x57
No size specified (using byte-data access)
0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef
00: 00 00 00 0f 00 00 03 00 00 00 00 00 00 00 00 00 ...?..?.........
10: 00 00 00 00 00 00 00 00 ff ff ff ff ff ff ff ff ................
20: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
30: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
40: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
50: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
60: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
70: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
80: 00 00 00 00 00 ff af af af af af af af 01 af af ......??????????
90: af af af af af af af af af af af af af af af af ????????????????
a0: af af af af af af af af af af af af af af af af ????????????????
b0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
c0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
d0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
e0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
f0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff 05 11 ..............??
Get data from an address on the device:
i2cget -y -f 6 0x57 0x06
Result:
root@edison:~# i2cget -y -f 6 0x57 0x06 0x03
Send data to the device:
i2cset -y -f 6 0x57 0x06 0x03
// I2C-6, endereço 57h, registrador 06h, escreve 03h
Saving data received from MQTT to InfluxDB using Node-Red
My NodeMCU are sending data using MQTT to the broker. Then this flow get the topic and the data and save on InfluxDB using its HTTP API.
http://flows.nodered.org/flow/5c96cc92d3171b6434bf
In function we have this code:
var tokens = msg.topic.split("/");
var dest = tokens[tokens.length-1];
msg.url ="http://localhost:8086/write?db=greenhouse";
msg.payload = tokens[2] + ",device=" + tokens[1] + " value=" + msg.payload;
return msg;
Here is a graphics sample:
Installing Node-Red on Intel Edison
npm install -g grunt-cli wget --no-check-certificate https://github.com/node-red/node-red/archive/0.13.2.zip unzip 0.13.2.zip cd node-red-0.13.2 npm install grunt build node red.js
Now you can access using the Edison's IP more the 1880 port, like this: http://192.168.13.105:1880/
Install InfluxDB on Ubuntu from oficial repo
Ubuntu users can install the latest stable version of InfluxDB using the apt-get package manager. For Ubuntu users, you can add the InfluxData repository configuration by using the following commands:
curl -sL https://repos.influxdata.com/influxdb.key | sudo apt-key add -
source /etc/lsb-release
echo "deb [ arch=amd64 ] https://repos.influxdata.com/${DISTRIB_ID,,} ${DISTRIB_CODENAME} stable" | sudo tee /etc/apt/sources.list.d/influxdb.list
And then to install and start the InfluxDB service:
sudo apt-get update && sudo apt-get install influxdb sudo service influxdb start
I just add [ arch=amd64 ] to the original command, to make it work. Without it, the apt-get will search for i386 packages too and then give an error.