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need help interfacing mobile phone with computer via rs232

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furbear

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i wonder what i do wrong, it seems my computer is not able to detect my mobile phone..i use this setup to connect my phone with my computer (rs232 to usb(male) -> usb hub(front n back is female) -> usb(male) to mobile phone.

thanks in advance..
 

srizbf

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Re: need help interfacing mobile phone with computer via rs2

are you connecting rs232 9pin connector signals directly to Usb hub ?

how did you do it ?
directly or which pins of rs23 to D+ and D- and 5/0 v.?

srizbf
28thjune2010
 

furbear

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Re: need help interfacing mobile phone with computer via rs2

err..i connect it through a COM port..

btw my COM port is a male so i had to use a female rs232 hub..
 

srizbf

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Re: need help interfacing mobile phone with computer via rs2

still unclear .

from COMport signals how do you connect to usb ?

srizbf
28thjune2010

Added after 7 minutes:

and what is 'female rs232 hub ' ?

srizbf
 

furbear

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Re: need help interfacing mobile phone with computer via rs2

ok..to offer a better understanding i'll post a pic..
 

srizbf

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Re: need help interfacing mobile phone with computer via rs2

hello ,

kindly explain me your intention.

it seems that your mobile phone has usb interface.
your computer has rs232 interace.

to connect these you have bought the model HU01 and to connect to usb , you have
got (may be with great difficulty ) of the conversion adapters.

(have seen all pictures) .

am i right?.

srizbf
28thjune2010
 

m_gray

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What I see is that if you didn't do any modification to your cellphone it is not going to work...

The problem is that USB is a complete slave / master protocol, so in order for this to work, and your phone is usually a slave, and the adapter is a slave too. Even if your phone had host(master) capabilities, a driver for RS232 for your phone certainly does not exist.


In short, this means that the adapter only works to connect a computer to a RS232 device, and not the opposite.
 

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