Date: Mon, 10 May 2021 08:55:52 +0200 From: Hans Petter Selasky <hps@selasky.org> To: Oliver Fromme <olli@fromme.com>, freebsd-usb@freebsd.org Subject: Re: Touchscreen "TSTP MTouch" Message-ID: <9b7b6c13-6e85-6f5e-7fea-e8a60f611e97@selasky.org> In-Reply-To: <202105092125.149LPpcl041031@nox.thiemo.net>
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On 5/9/21 11:25 PM, Oliver Fromme wrote:
> 22:56:30.540897 usbus1.5 SUBM-CTRL-EP=00000000,SPD=FULL,NFR=1,SLEN=8,IVAL=0
> frame[0] WRITE 8 bytes
> 0000 21 0B 01 00 00 00 00 00 -- -- -- -- -- -- -- -- |!....... |
> flags 0x10 <PROXY_BUFFER|0>
> status 0xca1a3
After sending what appears like a HID set report request, the device
stops responding. Looks like a firmware bug.
Is it possible to upgrade the firmware on the touchscreen?
> usb_error_t
> usbd_req_set_protocol(struct usb_device *udev, struct mtx *mtx,
> uint8_t iface_index, uint16_t report)
> {
> struct usb_interface *iface = usbd_get_iface(udev, iface_index);
> struct usb_device_request req;
>
> if ((iface == NULL) || (iface->idesc == NULL)) {
> return (USB_ERR_INVAL);
> }
> DPRINTFN(5, "iface=%p, report=%d, endpt=%d\n",
> iface, report, iface->idesc->bInterfaceNumber);
>
> req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
> req.bRequest = UR_SET_PROTOCOL;
> USETW(req.wValue, report);
> req.wIndex[0] = iface->idesc->bInterfaceNumber;
> req.wIndex[1] = 0;
> USETW(req.wLength, 0);
> return (usbd_do_request(udev, mtx, &req, 0));
> }
--HPS
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