USB host
From Openmoko
(I'll get that patch into bugzillia soon, but it really does work, and it really is freakin cool!) |
(→Three-Headed Cable) |
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* A cable going to a +5V voltage source with enough power for your device and to charge the Neo. This could be a wall charger or even another usb plug. | * A cable going to a +5V voltage source with enough power for your device and to charge the Neo. This could be a wall charger or even another usb plug. | ||
| − | You just connect the Data+ and Data- wires of the Neo and the device, and connect all of the ground wires together and all of the +5V wires together. This powers the Neo and the device, while letting the neo talk to the device. | + | You just connect the Data+ and Data- wires of the Neo and the device, and connect all of the ground wires together and all of the +5V wires together. This powers the Neo and the device, while letting the neo talk to the device. |
| + | Just for reference, the USB wires from left to right are: | ||
| + | *Black: Power - | ||
| + | *Green: Data - | ||
| + | *White: Data + | ||
| + | *Red: Power + | ||
=== Console === | === Console === | ||
Revision as of 21:20, 14 September 2007
Contents |
The Neo1973 as a USB host
The Neo1973's mini-usb port can be configured to act as a usb host instead of a usb device. This opens up a range of possibilities, such as usb cameras and usb input devices.
In order to get this working, you need the proper patch (more on that in a few days), and a special cable.
Three-Headed Cable
At the moment, you'll have to manufacture this one yourself. You need to make a cable with three ends:
- A mini-usb type B cable for the Neo itself
- A cable of whatever type to go to your usb device.
- A cable going to a +5V voltage source with enough power for your device and to charge the Neo. This could be a wall charger or even another usb plug.
You just connect the Data+ and Data- wires of the Neo and the device, and connect all of the ground wires together and all of the +5V wires together. This powers the Neo and the device, while letting the neo talk to the device.
Just for reference, the USB wires from left to right are:
- Black: Power -
- Green: Data -
- White: Data +
- Red: Power +
Console
Although you could use a USB keyboard, you may want to have a console while you're doing all of this. You'll probably want to use bluetooth inconjunction with pand to set up bluetooth networking.
Power Concerns
You'll need to force the Neo to go into fast charge mode, since it can't do its usual power negotation over USB.
echo -n "fast_cccv" > /sys/devices/platform/s3c2410-i2c/i2c-adapter/i2c-0/0-0008/chgmode
