Re: [Bluez-devel] uclinux and bluez

[Marcel Holtmann <marcel@holtmann.org>]

Hi Jorge,

> I noticed that hciattach doesnt seem to work in uclinux: i could never
> get a "up" device ("hciconfig hci0 up" always failed). In Linux it works
> perfectly. So I compared the behaviour in both system and realised
> that in linux hciattach sends a 0x01x03x10x00 and in uclinux not. I
> think that the sentence "ioctl(fd, HCIUARTSETPROTO, u->proto)" is
> which send that in linux but no in uclinux (although doesnt fail in
> uclinux, simply doesnt send nothing). I was able to see it thanks to a
> oscilloscope.
> I havent study the bluetooth protocols but I tried to send the
> 0x01x03x10x00 "by hand", opening the ttySx in 115200 baudrate and
> writing to it directly (with an auxiliar program I wrote).

what kind of hciattach command do you use? What kind of Bluetooth module
do you use? What endian is your ucLinux platform?

> I know it is not an elegant method and maybe this will only work with
> my hardware configuration. I have no idea of why "ioctl(fd,
> HCIUARTSETPROTO, u->proto)" is not working but I suppossed it was
> fault of the uclinux system (it has a 2.4.20 linux kernel).

This ioctl sets the H4 or BCSP mode of the hci_uart driver.

Regards

Marcel




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