Sending Images to RS232

Hi,

Did some one have a Idea how I can Read and Send a little JPG Image ~ 80KB trough RS232 Interface.

Thanks for any Information.

Regards Pesti

Via X-, Y- or ZMODEM ?

You are free to define your own protocol...

Quote:

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Originally Posted by Pesticida

Did some one have a Idea how I can Read and Send a little JPG Image ~ 80KB trough RS232 Interface.

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SEROUT, SEROUT2, DEBUG, and so on...

I will second BigWumpus on the protocol part. However if you are not game to do it that way, you can take a chunk of 16 bytes, checksum it and send. When received, ack/nak the chunk to decide whether to move on. This may be far simpler to implement.

Hi,

My Idea is to capture frome some Digital Kamera a Picture and than to Read with the Microcontroller and to send via Gprs Modem.

Thanks

regards Pesti

Quote:

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Originally Posted by Pesticida

My Idea is to capture frome some Digital Kamera a Picture and than to Read with the Microcontroller and to send via Gprs Modem.

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How long do ya suppose this will take?

A file is a file. Whether a .jpg, or text, you need to know where it is, how long it is, and the destination. You need horsepower, and 32 bit math. I sent pictures from an SD card, to an SD card wirelessly. It took a while at 115Kbaud. GMRS has limited bandwidth.

Hi,

Quote:

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Originally Posted by skimask

How long do ya suppose this will take?

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Something between 10-40 Seconds Sending and ~ 80 KB.

For the moment I want to use this Resolution 640X480 Pixel.

Regards Pesti

I think,

if you mange it to read out the ccd and you know what system will work on the "end" of the GPRS-connection, then it will be easy to find a simple protocol you can use.

So, do your homework and try to make clear, what you want to do.

Quote:

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Originally Posted by Pesticida

Something between 10-40 Seconds Sending and ~ 80 KB.
For the moment I want to use this Resolution 640X480 Pixel.
Regards Pesti

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What I meant was...how long to finish said project...

:-)

1-2 Months.

I need this for a Elevator,I have in the Elevator a Security system that is connectd with a GPRS Modem.
When someone Push the SOS Button then I make a single Picture shot and then I send the Data to the Security Center to see what is wrong .
The Problem is that I dont know what Digital Camera should I use for this Project.

Regards Pesti

What is the average, not maximum data rate for the GPRS modem?

Sorry but I dont understand what you mean with average! :-)

Regards Pesti

Quote:

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Originally Posted by Pesticida

Sorry but I dont understand what you mean with average! :-)
Regards Pesti

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http://dictionary.reference.com/browse/average

How much Photos!