Re: [beagleboard] UART loopback

2015-01-17 Thread Philippe Frossard
Le 16/01/2015 09:48, philippe.frossard a écrit : Hi, I have a problem when I connect P9.24 (ttyO1.TX) with P9.26 (ttyO1.RX), If I send data on serial port like this : echo 1 /dev/ttyO1 And read data on serial port like this : cat /dev/ttyO1 The command output a lot of data indefinitely ... and

Re: [beagleboard] Re: Checking GPIOpins for being healthy

2015-01-17 Thread Meino . Cramer
TJF jeli.freih...@gmail.com [15-01-17 04:10]: This shouldn't be a problem, since most header pins are configured as GPIO input by default and therefor can receive 3V2 input. Am Donnerstag, 15. Januar 2015 16:30:30 UTC+1 schrieb meino@gmx.de: I would like to check, whether these PINS

[beagleboard] Cannot ping google in BBB even after sharing internet

2015-01-17 Thread Raj_RB
Hi, 1) I downloaded 'bone-debian-7.5-2014-05-14-2gb' (BBB eMMC flasher) from 'http://beagleboard.org/latest-images' and the website given MD5 checksum matched with my downloaded zip file. Then used Win32 Disk Imager (since windows 7), for image writing 4GB microSD. 2) Inserted microSD into

Re: [beagleboard] Load the MLO and U-BOOT in beaglebone black though USB port

2015-01-17 Thread Vlad Ungureanu
https://github.com/ungureanuvladvictor/BBBlfs look at this to see how to boot via USB. On Thursday, January 15, 2015 at 8:54:06 AM UTC+1, goku...@gmail.com wrote: hi According to Silicon Errata SPRZ360 section 3.1.3 Boot: USB Boot ROM Code Uses Default DATAPOLARITY .The AM335x USB PHYs

[beagleboard] Re: Reduce PRU DDR read latency

2015-01-17 Thread ericggregory
I'm not an expert, and just learning myself... I found the examples in 'am335x_pru_package' on GitHub very useful, and was able to get them working on a 3.8 kernel. DDR access will have additional latency but 5.8us sounds high. Is that for 1 LBBO instruction? How are you timing this (which

[beagleboard] Reading large file from USB HDD causes 100% CPU usage

2015-01-17 Thread Jan Stanstrup
Hi. I am running ubuntu on BBB rev C and I have a USB disk attached. I am having trouble accessing large files on the USB disk over sftp and ftp. When I start a transfer it starts fine but after some minutes CPU is at 100% and the transfer slows to a crawl. I have tried different ftp servers

Re: [beagleboard] make menuconfig when compiling kernel

2015-01-17 Thread Yiling Cao
Do you have env ARCH=arm ? or: make ARCH=arm? On Fri, Jan 16, 2015 at 10:10 AM, 鄭功蔚 weides...@gmail.com wrote: Dear All I am having this trouble that when I finished selecting the menuconfig exit and type in command make. It will have an error like bellow.

[beagleboard] Use CircuitCo MiniDisplay cape as framebuffer device?

2015-01-17 Thread Drew Fustini
Hi, I have the 128x128 LCD MiniDisplay Cape from CircuitCo: http://elinux.org/CircuitCo:MiniDisplay_Cape I'm curious to know if anyone has this working as a framebuffer device. The wiki article links to Matt Porter's talk:

Re: [beagleboard] Re: BeagleBoard-X15 - seriously? :)

2015-01-17 Thread Matthijs van Duin
On Friday, 16 January 2015 16:29:37 UTC+1, RobertCNelson wrote: Check on linux-omap, Tony's been adding DM81xx support.. :D I think the problem with lack of mainline DM81xx support, is TI/etc never made a low cost BeagleBoard thus, the community never worked on it. ;) Yup, a shame

Re: [beagleboard] Re: BeagleBoard-X15 - seriously? :)

2015-01-17 Thread liyaoshi
I would believe this is because business reason :) same DIE ,mask some function for different price 2015-01-18 12:47 GMT+08:00 Matthijs van Duin matthijsvand...@gmail.com: On Sunday, 18 January 2015 05:23:51 UTC+1, liyaoshi wrote: AM57x dont have EVE IP Well, they *have* four EVEs, but

Re: [beagleboard] Reading large file from USB HDD causes 100% CPU usage

2015-01-17 Thread liyaoshi
As I understand USB 2.0 will cause 8000 interrupts in 1 seconds , an interrupt per 125us while read / write will cause some spin lock , specially ,when your write . And erase 1 nand block will cause several millisecond so when you write the usb stick . you always get no useful spin lock wait ,

Re: [beagleboard] Re: BeagleBoard-X15 - seriously? :)

2015-01-17 Thread Matthijs van Duin
On Sunday, 18 January 2015 05:23:51 UTC+1, liyaoshi wrote: AM57x dont have EVE IP Well, they *have* four EVEs, but they didn't pass the factory test and got disabled. If all EVEs did pass the test it would probably have ended up with TDA2 stamped on its package. It two pass the tests (and

Re: [beagleboard] Re: BeagleBoard-X15 - seriously? :)

2015-01-17 Thread liyaoshi
As I understand , 1) dm81xx only support syslink ti called ipc ver1.x 2) dra74x only support ipc version 3.x , compatible with linux kernel rpmsg 3)pci-e is nothing with Ti ipc 4) Ti implement ipu/hdvpss on their m4/m3 with BIOS/rtos ,this is depend on the ipc version . and no opensource code

Re: [beagleboard] Re: BeagleBoard-X15 - seriously? :)

2015-01-17 Thread Matthijs van Duin
On Sunday, 18 January 2015 04:50:25 UTC+1, RobertCNelson wrote: Related to ipc 3.x/rpmsg, started hacking on getting ducati (gst-ducati) working This is getting confusing... as far as I know ducati properly refers only to the dual cortex-m3 subsystem, although somehow it seems to have

Re: [beagleboard] Re: BeagleBoard-X15 - seriously? :)

2015-01-17 Thread liyaoshi
AM57x dont have EVE IP 2015-01-18 11:50 GMT+08:00 Robert Nelson robertcnel...@gmail.com: On Sat, Jan 17, 2015 at 8:34 PM, liyaoshi liyao...@gmail.com wrote: As I understand , 1) dm81xx only support syslink ti called ipc ver1.x 2) dra74x only support ipc version 3.x , compatible with linux

Re: [beagleboard] Re: BeagleBoard-X15 - seriously? :)

2015-01-17 Thread Robert Nelson
On Sat, Jan 17, 2015 at 8:34 PM, liyaoshi liyao...@gmail.com wrote: As I understand , 1) dm81xx only support syslink ti called ipc ver1.x 2) dra74x only support ipc version 3.x , compatible with linux kernel rpmsg Related to ipc 3.x/rpmsg, started hacking on getting ducati (gst-ducati)

Re: [beagleboard] Re: BeagleBoard-X15 - seriously? :)

2015-01-17 Thread Matthijs van Duin
On Sunday, 18 January 2015 03:34:53 UTC+1, liyaoshi wrote: 1) dm81xx only support syslink ti called ipc ver1.x 2) dra74x only support ipc version 3.x , compatible with linux kernel rpmsg IPC should be pretty easily portable; which is also evident from the fact that IPC 3.x supports tci6638,