İptal Edildi

QT4 - Query serial port data and store into db

I need a QT4 project that is querying data from multiple different serial/usb ports. (If usb is used there will be USB to rs232/485 converters used)

It shall query the inverters of a small solar plant to get the data. The protocol is available. The design needs to be multi-threaded. The standard case will be that there are about 5-10 inverters per serial port and 3 ports used. The application needs to send a request to one inverter after the other and receive the result. The bus will be master-slave rs485. Every port may only have 1 active request but the three ports needs to be independent. To save the data to database it should use an independent thread to not interrupt the port processing.

All the queried data shall be stored in an internal database. For the moment sqlite is planned.

The retrieved data shall be displayed on the touchsceen as graph with QWT or something similar.

It shall run on a mini2440 with 3.5" touchscreen (320x200).

If the project will be started depends on the offers.

Edit:
I created a small windows application in c# that imitates the inverter which shall be queried. Sending the defined request to this emulator will result in the answer that the inverter would normally return. A null modem cable would be needed to use it.

Beceriler: C++ Programlama, Linux

Daha fazlasını görün: qt4 rs232, mini2440 serial, use graph, thread programming, standard programming, serial programming, serial port programming, programming graph, n query, multi thread programming, multi threaded programming, linux serial port programming, graph to data, graph the data, graph programming, graph of data, graph and data, get into programming, data to graph, data programming, data on a graph, data for graph, data and graph, c++ programming offers, and or graph

İşveren Hakkında:
( 19 değerlendirme ) Vienna, Austria

Proje NO: #709404

9 freelancer bu iş için ortalamada 231$ teklif veriyor

srinichal

This may require access to your PC that is connected in realtime to the ports

in 4 gün içinde250$ USD
(37 Değerlendirme)
6.0
muthusuba

Please check PMB.

in 7 gün içinde250$ USD
(2 Değerlendirme)
3.1
ajinsk

Hi Hugo Let us Start- Please check your PM. Regards-Ajith

in 10 gün içinde250$ USD
(0 Değerlendirme)
0.0
emmo03

I'm ready, let's get started.

in 7 gün içinde240$ USD
(0 Değerlendirme)
0.0
Prasannabhat

Please see the PMB

in 30 gün içinde250$ USD
(1 Değerlendirme)
0.0
ventavnz

I am ready!!!!!!

in 7 gün içinde100$ USD
(0 Değerlendirme)
0.0
salman1200

interested in this job and start work right now.

in 25 gün içinde240$ USD
(0 Değerlendirme)
0.0
mentorict

Hello, I have more than 5 years of experience dealing with Hardware Interfacing using - Serial Port (Rs232-RS422 and USB) - Parallel Port - TCP/UDP - Modems I have implemented such Applications using VB6 an Daha fazlası

in 5 gün içinde250$ USD
(0 Değerlendirme)
0.0
help4assign

Abundant experience on Linux (9 years) and 4 years QT programming.

in 10 gün içinde250$ USD
(0 Değerlendirme)
0.0