Re: 3G Modem modification
Posted: 11 Nov 2010, 09:18
Do not have a USB 3G modem at hand, trying a USB SD storage card reader first:
Parrot's AR.Drone, Bebop, Jumping Sumo, Airborne Night, Airborne Cargo, Rolling Spider, Hydrofoil, Swing and Mambo
The "HANG!" message indicates a communication problem with the PHY.MAPGPS wrote:I tried to re-build the AR.Drone Linux kernel with USB OTG driver module enabled.
FTP the module dwc_otg.ko onto AR.Drone, and load the module.
Code: Select all
# uname -a Linux myhost 126.96.36.199-parrot-01227-g93dde09 #1 PREEMPT Fri Jul 2 15:23:06 CEST 2010 armv5tejl GNU/Linux # pwd /data # ls -l *.ko -rw-r--r-- 1 root root 1020550 Jan 1 00:51 dwc_otg.ko # insmod ./dwc_otg.ko # dmesg ... [ 3118.627164] dwc_otg: version 2.70a-parrot 22/03/2009 [ 3118.627335] dwc_otg dwc_otg.0: dwc_otg_driver_probe(c0357578) [ 3118.627366] dwc_otg dwc_otg.0: start=0xc0400000 [ 3118.627481] dwc_otg dwc_otg.0: base=0xc8e00000 [ 3118.627514] dwc_otg dwc_otg.0: specific configuration [ 3118.627545] gpio 0 is not selected. [ 3118.627556] Please do it in your board code [ 3118.627576] not auto selecting this critical pin [ 3119.131878] dwc_otg dwc_otg.0: dwc_otg_device=0xc7a424e0 [ 3119.140222] DWC_otg: dwc_otg_core_reset() HANG! Soft Reset GRSTCTL=80000001 [ 3119.140265] DWC_otg: dwc_otg_core_reset() HANG! AHB Idle GRSTCTL=80000001 [ 3119.153143] DWC_otg: dwc_otg_core_reset() HANG! Soft Reset GRSTCTL=80000001 [ 3119.153185] DWC_otg: dwc_otg_core_reset() HANG! AHB Idle GRSTCTL=80000001 [ 3119.153229] DWC_otg: Dedicated Tx FIFOs mode
I had to resurrect this thread because I love disproving people that think they know what they are talking about but really have no idea.Symon wrote:Adding a 3G/4G modem is just way over ambitious for the AR Drone. It's not feasible.
I bought a DISCO drone from my friend and now I want to configure it with a high-speed modem, which modem I use for it 3G modem or 4G modem will be best for it.mf25053 wrote: ↑15 Oct 2010, 20:473g and even 4g are going to have the same issue of lag.
as you'd be flying by pure camera once out of visual range of the drone, this would make flying it very difficult if not impossible
and I realize 3g and 4g have good data transfer rates. BUT they also have QOS features, which prioritizes voice over data the way a VOIP phone system (when correctly configured) works. voice information must be in a constant stream, where as data can be delayed and reassembled on the other end. that would happen to the drone's flight controls as well as the video stream.
I'm also betting the USB port isn't an accessory port, it's more than likely for internal diagnostics or factory installs of software / firmware. those type of setups usually are only for that purpose.