Android phone as host to Arduino

Projects Programming
1

I have a Uno R3 "look alike" which works entirely as expected with a computer but a Galaxy Nexus program can only detect one endpoint, an interrupt, with no bulk endpoints. The same program, with a thumb drive, will detect all three expected endpoints. Does this Uno have wrong firmware in the usb-serial adapter? The examples from Nexus-Computing GmbH Switzerland clearly use bulk endpoints.

	private void processEndPoint(int endPointCount, UsbInterface usbInterface) {
		UsbEndpoint epOut = null;
		UsbEndpoint epIn = null;
		UsbEndpoint epInt = null;
		for (int i=0; i<endPointCount; i++) {
			UsbEndpoint ep = usbInterface.getEndpoint(i);
			if (ep.describeContents() > 0) {
				sb.append("ep " + i + " Contents " + String.valueOf(ep.describeContents()) + ":");
			}
			sb.append("ep " + i + " EndpointNumber " + String.valueOf(ep.getEndpointNumber()) + ":");
			sb.append("ep " + i + " Attributes " + String.valueOf(ep.getAttributes()) + ":");
			sb.append("ep " + i + " Direction " + String.valueOf(ep.getDirection()) + ":");		// 0x80 = in, 0 = out
			sb.append("ep " + i + " MaxPacketSize " + String.valueOf(ep.getMaxPacketSize()) + ":");
			sb.append("ep " + i + " Type " + String.valueOf(ep.getType()) + ":");
			if (ep.getType() == UsbConstants.USB_ENDPOINT_XFER_BULK) {
				if (ep.getDirection() == UsbConstants.USB_DIR_OUT) {
					epOut = ep;
					sb.append("found ep out :");
		        } else {
		        	epIn = ep;
		        	sb.append("found ep in :");
		        }
			} else if (ep.getType() == UsbConstants.USB_ENDPOINT_XFER_INT) {
				epInt = ep;
				sb.append("found ep interrupt :");
			} else {
				sb.append("found ep unknown :");
			}
		}

I couldn't figure out how to add the screen shot!

2

Problem solved! The Uno has two "devices" and I was originally looking only at device = 0 which is the boot loader. I see the two bulk endpoints when I examine device = 1.