Go Down

Topic: Sony Ericsson - RS232 - Rx/Tx serial help :) (Read 335 times) previous topic - next topic

AloyseTech

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

CrossRoads

Quote
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
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

CrossRoads

One question, one topic please. Have a little patience for a reply.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

AloyseTech


Quote
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 ?

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.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

AloyseTech


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... :/

CrossRoads

"if I want to send AT commands I have to use the Serial Rx/Tx"
I believe that is correct.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

AloyseTech

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

Go Up