| Re: [mita-dev] Feedback zu Eclipse Mita / XDK Live |
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Of course, I’m sorry for the inconvenience! Dear Eclipse Mita community, we are a software development team at Bosch Connected Industry (BCI/ECO). We are currently developing an IIoT architecture based on open source components. In our setup, a Bosch
XDK sends sensor data to a broker (Eclipse Kura) running on a Raspberry Pi. On the XDK, we are running an Eclipse Mita application (see attachment). We are amazed by the simplicity of Eclipse Mita / XDK Live and we believe that it is a fantastic tool to be
used in typical IIoT use cases. In our first steps with Mita, we noticed some things that we would like to share with you: 1.
As far as we can tell, the platform XDK100 does not support the magnetometer and gyroscope of the XDK yet (https://bit.ly/2rfipwu)
– perhaps this could be implemented in a future release of the XDK workbench? This way, we could make use of the XDK’s full potential. 2.
In our setup, the XDK sends data to the broker using the WIFI network of the Raspberry Pi. However, this network is not 100% reliable, and as a result the WIFI connection
is interrupted after a period of time. Unfortunately, the WIFI connectivity is only set up once, and as soon as the connection is lost, a WIFI connectivity exception occurs and the entire XDK Live application crashes. Therefore, we would love to have the possibility
to reconnect to the WIFI network. Maybe, an automatic WIFI reconnect could be implemented in the WIFI setup or a WIFI reconnect method could be provided as part of the Eclipse Mita language.
In our eyes, the ability to reconnect to a WIFI network after a connection loss is crucial for the application’s persistence. Please do not take our feedback as criticism – we just wanted to share our first experiences with Eclipse Mita with you.
We see great potential in this programming language and we are excited for what is yet to come!
Best regards
Von: mita-dev-bounces@xxxxxxxxxxx [mailto:mita-dev-bounces@xxxxxxxxxxx]
Im Auftrag von Benjamin Cabé This looks great! However, I, and probably many others on this list, do not speak a single word of German :-) Can you please use the english language to communicate on this mailing list? Thanks! Benjamin. Le mer. 2 mai 2018 à 15:42, FIXED-TERM Kunz Niklas Cornelius (BCI/ECO) <fixed-term.NiklasCornelius.Kunz@xxxxxxxxxxxx> a écrit :
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package main;
import platforms.xdk110;
var sendData = false;
// Configure the WLAN connectivity of the XDK.
setup devnet : WLAN {
ssid = "SSID_MSW_Pi_AccessPoint";
psk = "PassWord123!";
}
// Software resources are set up using the setup keyword.
// Notice how we refer to the devnet WLAN setup
// as means of transport, and instantiate a signal to the / topic.
setup backend : MQTT {
transport = devnet;
url = "mqtt://172.16.1.1:1883";
clientId = "client_xdk";
var events = topic(name="xdk/data");
}
setup hmi : LED {
var dataSent = light_up(color=Red);
var errorInfo = light_up(color=Yellow);
}
every button_one.pressed {
sendData = true;
println("Publishing to mqtt broker.");
hmi.dataSent.write(true);
}
every button_two.pressed {
sendData = false;
println("Not publishing to mqtt broker.");
hmi.dataSent.write(false);
}
// The every keyword handles events. Here we use time as an event source and
// run at a regular interval.
every 3 seconds {
// Writing to the signal instance we've created in the signal block
// above sends out the MQTT message (backend is an MQTT resource
// after all). Using backticks we can use string interpolation.
// Here we construct a JSON string inline to the function call.
if (sendData == true) {
// Sensor data (and other modalities) are available due to the platform import above.
// One can use some resources even if they were not configured beforehand.
let temp = environment.temperature.read() - 7000;
let hmd = environment.humidity_fixed_point.read();
let pres = environment.pressure.read();
let li = light.intensity.read();
let acc_x = accelerometer.x_axis.read();
let acc_y = accelerometer.y_axis.read();
let acc_z = accelerometer.z_axis.read();
let gyro_x = 0;
let gyro_y = 0;
let gyro_z = 0;
let mag_x = 0;
let mag_y = 0;
let mag_z = 0;
try {
backend.events.write(`{ "temperature": ${temp}, "humidity": ${hmd},
"pressure": ${pres}, "light": ${li},
"acc_x": ${acc_x}, "acc_y": ${acc_y}, "acc_z": ${acc_z}, "gyro_x": ${gyro_x}, "gyro_y": ${gyro_y}, "gyro_z": ${gyro_z},
"mag_x": ${mag_x}, "mag_y": ${mag_y}, "mag_z": ${mag_z}}`);
} catch(Exception) {
hmi.errorInfo.write(true);
println("Exception. Data could not be published.");
}
}
}