[OpenWrt-Devel] Exhausted on finding a gpio for USB_POWER...
Hi,guys! I am finding the gpio to enable USB_POWER for tl-wr843n(arthoes ar9341).I've tried out all gpio number just can't power up the usb(with factory firmware it does).Can someone kind to help me solve this? These are the command I tried to find gpios,don't know if it's proper.But it works on leds. root@OpenWrt:~# echo 6 /sys/class/gpio/export root@OpenWrt:~# echo out /sys/class/gpio/gpio6/direction root@OpenWrt:~# echo 0 /sys/class/gpio/export root@OpenWrt:~# echo out /sys/class/gpio/gpio0/direction root@OpenWrt:~# echo 1 /sys/class/gpio/export root@OpenWrt:~# echo out /sys/class/gpio/gpio1/direction root@OpenWrt:~# echo 2 /sys/class/gpio/export root@OpenWrt:~# echo out /sys/class/gpio/gpio2/direction root@OpenWrt:~# echo 3 /sys/class/gpio/export root@OpenWrt:~# echo out /sys/class/gpio/gpio3/direction root@OpenWrt:~# echo 4 /sys/class/gpio/export root@OpenWrt:~# echo out /sys/class/gpio/gpio4/direction Mach is attached. mach-tl-wr843n.ok0428 Description: Binary data ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
Re: [OpenWrt-Devel] Exhausted on finding a gpio for USB_POWER...
Hi, Le samedi 28 avril 2012 19:01:03, Vince Huang a écrit : Hi,guys! I am finding the gpio to enable USB_POWER for tl-wr843n(arthoes ar9341).I've tried out all gpio number just can't power up the usb(with factory firmware it does).Can someone kind to help me solve this? These are the command I tried to find gpios,don't know if it's proper.But it works on leds. root@OpenWrt:~# echo 6 /sys/class/gpio/export root@OpenWrt:~# echo out /sys/class/gpio/gpio6/direction root@OpenWrt:~# echo 0 /sys/class/gpio/export root@OpenWrt:~# echo out /sys/class/gpio/gpio0/direction root@OpenWrt:~# echo 1 /sys/class/gpio/export root@OpenWrt:~# echo out /sys/class/gpio/gpio1/direction root@OpenWrt:~# echo 2 /sys/class/gpio/export root@OpenWrt:~# echo out /sys/class/gpio/gpio2/direction root@OpenWrt:~# echo 3 /sys/class/gpio/export root@OpenWrt:~# echo out /sys/class/gpio/gpio3/direction root@OpenWrt:~# echo 4 /sys/class/gpio/export root@OpenWrt:~# echo out /sys/class/gpio/gpio4/direction Mach is attached. Check whether the GPIO might be controlling the USB power using a pull-up/down GPIO. Set the GPIO direction to output, then back to input and see if that changes anything. -- Florian ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
Re: [OpenWrt-Devel] Exhausted on finding a gpio for USB_POWER...
Hi, did you actually echo anything to /sys/class/gpio/gpioX/value? Vince Huang schrieb: Hi,guys! I am finding the gpio to enable USB_POWER for tl-wr843n(arthoes ar9341).I've tried out all gpio number just can't power up the usb(with factory firmware it does).Can someone kind to help me solve this? These are the command I tried to find gpios,don't know if it's proper.But it works on leds. root@OpenWrt:~# echo 6 /sys/class/gpio/export root@OpenWrt:~# echo out /sys/class/gpio/gpio6/direction root@OpenWrt:~# echo 0 /sys/class/gpio/export root@OpenWrt:~# echo out /sys/class/gpio/gpio0/direction root@OpenWrt:~# echo 1 /sys/class/gpio/export root@OpenWrt:~# echo out /sys/class/gpio/gpio1/direction root@OpenWrt:~# echo 2 /sys/class/gpio/export root@OpenWrt:~# echo out /sys/class/gpio/gpio2/direction root@OpenWrt:~# echo 3 /sys/class/gpio/export root@OpenWrt:~# echo out /sys/class/gpio/gpio3/direction root@OpenWrt:~# echo 4 /sys/class/gpio/export root@OpenWrt:~# echo out /sys/class/gpio/gpio4/direction Mach is attached. ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
Re: [OpenWrt-Devel] Exhausted on finding a gpio for USB_POWER...
Thanks,found it with
echo in /sys/class/gpio/gpio4/direction
My usb stick is recognized right after this.
But I can't get usb initialize from mach!How to solve it?
I've added these lines to mach:
static void __init tl_wr843n_usb_setup(void)
{
/* enable power for the USB port */
gpio_request(TL_WR843N_GPIO_USB_POWER, USB power);
gpio_direction_output(TL_WR843N_GPIO_USB_POWER, 0); /* 1 is not
working,too */
ath79_register_usb();
}
tl_wr843n_usb_setup();
-- Original --
From: Florian Fainelliflor...@openwrt.org;
Date: Sun, Apr 29, 2012 01:09 AM
To: openwrt-developenwrt-devel@lists.openwrt.org;
Cc: Vince Huangaxish...@foxmail.com;
Subject: Re: [OpenWrt-Devel] Exhausted on finding a gpio for USB_POWER...
Hi,
Le samedi 28 avril 2012 19:01:03, Vince Huang a écrit :
Hi,guys!
I am finding the gpio to enable USB_POWER for tl-wr843n(arthoes
ar9341).I've tried out all gpio number just can't power up the usb(with
factory firmware it does).Can someone kind to help me solve this? These
are the command I tried to find gpios,don't know if it's proper.But it
works on leds. root@OpenWrt:~# echo 6 /sys/class/gpio/export
root@OpenWrt:~# echo out /sys/class/gpio/gpio6/direction
root@OpenWrt:~# echo 0 /sys/class/gpio/export
root@OpenWrt:~# echo out /sys/class/gpio/gpio0/direction
root@OpenWrt:~# echo 1 /sys/class/gpio/export
root@OpenWrt:~# echo out /sys/class/gpio/gpio1/direction
root@OpenWrt:~# echo 2 /sys/class/gpio/export
root@OpenWrt:~# echo out /sys/class/gpio/gpio2/direction
root@OpenWrt:~# echo 3 /sys/class/gpio/export
root@OpenWrt:~# echo out /sys/class/gpio/gpio3/direction
root@OpenWrt:~# echo 4 /sys/class/gpio/export
root@OpenWrt:~# echo out /sys/class/gpio/gpio4/direction
Mach is attached.
Check whether the GPIO might be controlling the USB power using a pull-up/down
GPIO. Set the GPIO direction to output, then back to input and see if that
changes anything.
--
Florian___
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