Thread: [Announce] USB hostmode beta release
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mveplus is offline mveplus
2010-11-10 , 01:42
Posts: 66 | Thanked: 77 times | Joined on Jul 2010 @ intheclouds
#183
Originally Posted by mikecomputing View Post
Hmm just wonder if someone has tried a USBtoRS232(FT232) dongle on N900 would be great if this is possible? to connect a serial port via USB. But I guess those FT232 chips eating power :-(

But it would be great to connect my n900 via serialline to a project at my work :-D
Hi, I do not see any problems with that, just the right drivers compiled in the kernel will do the job.
Here are some tests:
1. FT232BL
Consummation - 26.57mA
2. AU9720
Consummation - 19.54mA
h-e-n - Full Speed hostmode ( Low Speed hostmode -same consummation)
3.Compared to my USB 2GB Bamboo Flash - Hi Speed hostmode
Consummation - 81mA (Read), and up to 127mA (Write) more

Code:
[ 8824.617065] usb 1-1: new low speed USB device using musb_hdrc and address 21
<br>[ 8825.038848] usb 1-1: device not accepting address 21, error -71
<br>[ 8825.038970] hub 1-0:1.0: unable to enumerate USB device on port 1
<br>[ 8825.406036] usb 1-1: new full speed USB device using musb_hdrc and address 22
<br>[ 8825.557556] usb 1-1: configuration #1 chosen from 1 choice
<br>[ 8825.563629] drivers/usb/core/inode.c: creating file '022'
<br>[ 8825.564117] usb 1-1: New USB device found, idVendor=0403, idProduct=6001
<br>[ 8825.564147] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
<br>[ 8825.564178] usb 1-1: Product: USB &lt;-&gt; Serial
<br>[ 8825.564208] usb 1-1: Manufacturer: FTDI
<br>................
<br>[ 9672.883758] wlan0: roaming signal from driver, sending HIGHSIGNAL
<br>[ 9679.007720] usb 1-1: device descriptor read/64, error -110
<br>[ 9694.241973] usb 1-1: device descriptor read/64, error -110
<br>[ 9694.476379] usb 1-1: new full speed USB device using musb_hdrc and address 28
<br>[ 9699.627746] usb 1-1: configuration #1 chosen from 1 choice
<br>[ 9699.630310] drivers/usb/core/inode.c: creating file '028'
<br>[ 9699.630798] usb 1-1: New USB device found, idVendor=058f, idProduct=9720
<br>[ 9699.630828] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
<br>[ 9700.670013] usb 1-1: USB disconnect, address 28
<br>[ 9700.952880] usb 1-1: new full speed USB device using musb_hdrc and address 29
<br>[ 9701.103973] usb 1-1: configuration #1 chosen from 1 choice
<br>[ 9701.108154] drivers/usb/core/inode.c: creating file '029'
<br>[ 9701.109069] usb 1-1: New USB device found, idVendor=058f, idProduct=9720
<br>[ 9701.109100] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
<br>[ 9704.837463] wlan0: roaming signal from driver, sending LOWSIGNAL
<br>[ 9705.861694] wlan0: roaming signal from driver, sending HIGHSIGNAL
<br>Nokia-N900:~#
Using stock kernel not power one.
http://dl.dropbox.com/u/12258575/N900/USB2RS232.jpg
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Last edited by mveplus; 2010-11-10 at 07:14. Reason: Update, language error corections
 

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