Sony Ericsson - RS232 - Rx/Tx serial help :)

Hi there :) ,

I would like to use my old SOny Ericsson W810i or K610i to send sms.

I plan to use my arduino to send at commands.

I don't know how to interface those phone.

Here is the pinout : http://pinouts.ru/CellularPhones-P-W/se_k750i_pinout.shtml pin no. 1 = +5 v pin no. 5 = Tx RS232 pin No. 6 = Rx RS232 pin no. 9 = Gnd pin No. 10= USB Data + pin no. 11= USB Data -

It is possible to use directly the Usb d+/d- and use it as a Serial port on arduino? Or I have to find a way to convert RS232 to serial?

Thank you for your help!

AloyseTech

It is possible to use directly the Usb d+/d- and use it as a Serial port on arduino?

Yes, if the phone is a USB master. Otherwise, no, can't connect two USB slaves.

RS232 to serial, just need a MAX232 or MAX3232 type chip, or a module depending on the connector needs http://www.nkcelectronics.com/rs232-to-ttl-converter-board-33v232335.html http://www.nkcelectronics.com/RS232-to-TTL-converter-board-DTE-with-Male-DB9-33V-to-5V_p_369.html

One question, one topic please. Have a little patience for a reply.

CrossRoads:

It is possible to use directly the Usb d+/d- and use it as a Serial port on arduino?

Yes, if the phone is a USB master. Otherwise, no, can't connect two USB slaves.

RS232 to serial, just need a MAX232 or MAX3232 type chip, or a module depending on the connector needs http://www.nkcelectronics.com/rs232-to-ttl-converter-board-33v232335.html http://www.nkcelectronics.com/RS232-to-TTL-converter-board-DTE-with-Male-DB9-33V-to-5V_p_369.html

But if I use a Softwareserial port to communicate between the two, there will be each Master and slave alternatively ?

Serial back & forth with Rx/Tx at up to 4800 is entirely different from USB running at 12 Mybytes/sec & the USB protocol that goes on between master/host & slave.

CrossRoads:
Serial back & forth with Rx/Tx at up to 4800 is entirely different from USB running at 12 Mybytes/sec & the USB protocol that goes on between master/host & slave.

But if I want to send AT commands I have to use the Serial Rx/Tx, no?

Or maybe I could use a USB host shield? I’m not really good at communication stuff… :confused:

"if I want to send AT commands I have to use the Serial Rx/Tx" I believe that is correct.

And What about the USB host Shield? Do you think it is possible to communicate this way?