Charles mingus mingus mingus mingus album. The goal of this project is to create a working adapter between a wired Xbox 360 controller and a Nintendo 64 game console. The signals from the Xbox 360 controller USB port data pins (Data+ and Data-) will be picked up and modified appropriately by a microcontroller; the modified 32-bit output signal will feed into the console. I am not going to inquire on how to perform the bulk of the tasks, rather a means of surpassing a roadblock that occurred during preliminary testing.

A computer running a Windows 7 OS is typically capable of locating drivers for the controller, which then allows the controller to communicate with the PC. Rather than plugging into a USB port, however, I have provided 5V directly from a power supply across the VCC and GND terminals on the physical male USB stick appended to the controller. This was partially a success in that the light indicating power is received turned on; but only momentarily, for about a third of a second. The light then turned off until I reconnected the DC signal. In other words lifting a lead from either GND or VCC and then reconnecting caused the light to blink again - for about a third of a second each and every time it was tested.

I presume there is a particular sequence of data that needs to be sent in through the two data pins, that the Windows driver would know how to communicate with. In this way a computer with the drivers installed will power the controller on and then immediately initiate some sort of coded signal through the data pins to keep the controller powered on indefinitely. It is at this point that I believe the controller can send data through the USB data pins, to the computer, though which the signal will vary based on the combination of buttons being pressed. Because I cannot get the controller to stay on I cannot even begin to test this, so it is all theoretical to me.

Could anyone shed light on what I may be doing wrong in powering the controller? Am I required to send data in the same way a Microsoft driver would to get the light to stay on? If so, how can I know the required signals to be sent? Am I potentially missing something else? I could not find a datasheet for the Xbox 360 controller that contains any information on how to intercept its signals and provide power (no shock there), so I have addressed my question here in hopes that someone has knowledge in this area.

Not looking particularly for a quick reply, just one that may concretely address these low-level questions.

2 Answers

The xbox controller is a composite USB device, consisting of a USB Hub, a USB HID device, and a memory device or two for the memory cards (or other accessories). Before the driver even begins to take control, the USB Host (I.e. the computer) must initiate a standard usb enumeration process.

If you plug in the controller to power, but the usb D+ and D- are left floating, it does not see any enumeration and shuts down. Like if you plug it into a dumb charger. Enumeration is typically expected to take place in milliseconds, which is why you only see it on for a third of a second (330 milliseconds, an eternity to a microcontroller).

The N64 only supplies 3.3V over the power pin to controllers.

I used a beaglebone black to make a n64/gamecube adapter for any usb device, but it needs external (5V) power.

I am in the process of re-writing the software so if you want to collaborate just shoot me an email. Bulk of the work is getting certain utilities to compile on Angstrom Linux. ( Or finding a way to get Qt4 embedded to run on Ubuntu )

Not the answer you're looking for? Browse other questions tagged poweradaptercontroller or ask your own question.

You need more than just HDLC or FLEN for a dedicated sniffer app. You need some way to set the channel, etc. If this capability is going to be built into the NCP (which I plan to do), might as well use that.

For example, you can turn any spinel-based NCP into a sniffer (not considering the framing protocol) by sending it the following commands:

• CMD_RESET
  • Bytes: 80 01
• CMD_SET_PROP(PROP_PHY_ENABLED, 1)
  • Bytes: 80 03 20 01
• CMD_SET_PROP(PROP_PHY_RAW_STREAM_ENABLED, 1)
  • Bytes: 80 03 27 01
• CMD_SET_PROP(PROP_PHY_PROMISCUOUS_MODE_ENABLED, 1)
  • Bytes: 80 03 28 01
• CMD_SET_PROP(PROP_PHY_CHAN, <Channel-Number>)
  • Bytes: 80 03 21 XX (where XX is the channel number in hex)

Then you would get raw frames on the given channel via updates to PROP_STREAM_RAW. The frames from the NCP would look like this:

Where:

• LL LL is the length of the raw packet (XX .. XX) in bytes, stored as a little-endian uint16.
• RR .. RR is the bytes of the raw packet.
• MM .. MM is optional metadata about the raw packet (Channel, RSSI, LQI, etc). Format TBD.

So, all things considered, it's really not any more complicated to talk to the NCP than it would be to talk to a dedicated sniffer app. Initialization is just sending the NCP a fixed set of frames, setting the last byte of the last frame to the channel. Then you handle any frame you receive starting with 80 06 71 as a received packet, and extract the packet bytes and metadata.

Panic at the disco full discography download torrent. Note that this isn't actually implemented in the NCP yet, but doing so wouldn't be very difficult and is absolutely on my list of capabilities I intend to add.

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