Обсуждение: [GENERAL] Regrding:- Arduino-Postgresql Direct Connection

On 12/8/2016 8:56 PM, Roshan Jha wrote:
> In my project ,I have  to send the data from the arduino to the direct
> postgresql for storing .So i want know that is it possible to make
> direct connection between arduino to postgresql ,If yes, then let me
> know, how should i do.

arduinos don't even have native networking, do they?  so you'll need an
ethernet adapter, and someone's tcp/ip libraries to even get data off it...

it might be easier to do this on a raspberry pi...  they run a small
linux system natively, and have ethernet built in, the pi3 has
integrated wifi, too.

To talk to postgresql directly, you would need a libpq compiled for
arduino, this compilation, while theoretically possible quite likely
would be rather tricky.

instead, I'd suggest implementing a front end, perhaps RESTful, that
runs on an application server, either on the postgres database server or
another nearby server, and have the arduino send the data to it, this
front end would format the data and insert it into the postgres
database.   keep the app server API at a simple application-oriented
level ('GET record', 'PUT record' kind of thing...) so the arduino code
can be kept quite simple.


--
john r pierce, recycling bits in santa cruz

On 09/12/16 21:30, John R Pierce wrote:
> On 12/8/2016 8:56 PM, Roshan Jha wrote:
>> In my project ,I have  to send the data from the arduino to the direct
>> postgresql for storing .So i want know that is it possible to make
>> direct connection between arduino to postgresql ,If yes, then let me
>> know, how should i do.
>
> arduinos don't even have native networking, do they?  so you'll need an
> ethernet adapter, and someone's tcp/ip libraries to even get data off it...
>
> it might be easier to do this on a raspberry pi...  they run a small
> linux system natively, and have ethernet built in, the pi3 has
> integrated wifi, too.
>
> To talk to postgresql directly, you would need a libpq compiled for
> arduino, this compilation, while theoretically possible quite likely
> would be rather tricky.
>
> instead, I'd suggest implementing a front end, perhaps RESTful, that
> runs on an application server, either on the postgres database server or
> another nearby server, and have the arduino send the data to it, this
> front end would format the data and insert it into the postgres
> database.   keep the app server API at a simple application-oriented
> level ('GET record', 'PUT record' kind of thing...) so the arduino code
> can be kept quite simple.

I really don't think an Arduino is the tool for this job, but I've known
plenty of people who'd try to make do... and wouldn't know when to give up.

I'd add my vote for Raspberry Pi here, if the OP has an unavoidable need
to use Arduino "shields" there's an interface called the Raspduino which
would help.

--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk

[Opinions above are the author's, not those of his employers or colleagues]