Forum - Recent Threads

embedded linux

datta — Thu, 04 Jan 2018 08:40:57 GMT

can i learn/start on this board an embedded linux programming in c.

SAMA5D3 Xplained A/D conversion - what's wrong?

Former Member — Tue, 05 Jan 2016 22:27:21 GMT

I have enabled A0-A2, but if I try to read the raw voltage using a cat of the Voltage0_raw file, I get a timeout. Same thing for chan 1 and 2.

I can see that the channels have been enabled by doing a cat of the voltage_en files. Is there further setup required?

configure analog pin as digital pin in Sama5d3

Former Member — Sun, 25 Oct 2015 19:42:35 GMT

Hi.

I have the SAMA5D3 Xplained. Would it be possible to configure analog pin as digital pin from the kernel?

I want to configure these ports to function as analog or digital. My idea is to use the analog as digital ports and to see values using evtest. Would it be possible to do it in an easy way from the kernel?

Regards!!

SAMA5D4 ADC driver - do you know a Linux image that has the driver?

Jan Cumps — Fri, 22 May 2015 11:45:47 GMT

For the Enchanted Objects Design ChallengeI'm trying to get the ADC Hardware Trigger mechanism working.

I have difficulties with the ADC driver. I am unsure if the 4.7 and 4.6 linux Yocto Poky images have that driver installed.

I have 3 questions :

Is the ADC driver for the sama5d4 included in those Yocto Poky images?

If yes, what's the name of the driver (is it at91_adc)?

If no, is there an image around with the ADC included, or is there a way to get the driver installed on my board running that Yocto Poky image?

Here's the blog post that shows what I'm dong: Review 9b: Atmel SMART SAMA5D4 Xplained Ultra - Set up ADC Buffer with Hardware Trigger Part 2

I have issues when the buffer read tool generic_buffer tries to load the driver:

Here's where the code fails:

    /* Find the device requested */  
    dev_num = find_type_by_name(device_name, "device");  
    if (dev_num < 0) {  
        printf("Failed to find the %s\n", device_name);  
        ret = -ENODEV;  
        goto error_ret;  
    }  
    printf("iio device number being used is %d\n", dev_num);

Error

Failed to find the at91_adc

Who has a working SAM-BA script for one of the ATMEL Software Package examples

Jan Cumps — Tue, 28 Apr 2015 09:18:38 GMT

I'm able to build the latest binaries (1.3) for the SAMA5D4 Software Package.

I'm looking for an example with working SAM-BA script and supporting loader binaries that I can use to load such a successfully compiled binary to the SAMA5D4 Xplained Ultra.

It would be great if you have been able to do this, and share your process to load the examples via SAM-BA.

(note: I have working examples for the linux builds that are available on at91. I can replicate a load of these, following Robert Peter Oakes' instructions. SAM-BA v2.15 running on Windows 8.x)

Who has created a project for the SAMA5D4 in Atmel Studio 6.x?

Jan Cumps — Sat, 11 Apr 2015 19:00:28 GMT

I dowloaded Atmel Studio 6.2 and unstalled all updates.

When creating a project, I don't know how to select the right processor and settings for the SAMA5D4 Xplained Ultra board.

If you have done this, it would be great to explain the steps.

Who has successfully compiled a project of SAMA5D4 GNU Software Package 1.2 for Xplained board on Windows?

Jan Cumps — Tue, 31 Mar 2015 12:26:40 GMT

I've downloaded SAMA5D4 GNU Software Package 1.2 for Xplained board from http://www.atmel.com/tools/SAMA5D4SOFTWAREPACKAGE.aspx,

and tried to build the projects in there as explained in the documentation folder of that zip file, and by following http://gnuarmeclipse.livius.net/blog/plugins-install/

I haven't been able to succeed a single buid. I used the command line, ARM's editor ARM DS-5, and a plain eclipse.

My build fails on a similar line for each build file in that zip:

$(subst /,$(SEP),$(OUTPUT_BIN)) $(OUTPUT_PATH):
  mkdir $@

process_begin: CreateProcess(NULL, arm-none-eabi-gcc -c -Wall -Wchar-subscripts -Wcomment -Wformat=2 -Wimplicit-int -Werror-implicit-function-declaration -Wmain -Wparentheses -Wsequence-point -Wreturn-type -Wswitch -Wtrigraphs -Wunused -Wuninitialized -Wunknown-pragmas -Wfloat-equal -Wundef -Wshadow -Wpointer-arith -Wbad-function-cast -Wwrite-strings -Wsign-compare -Waggregate-return -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -Wformat -Wmissing-format-attribute -Wno-deprecated-declarations -Wredundant-decls -Wnested-externs -Winline -Wlong-long -Wunreachable-code -mlong-calls -ffunction-sections -g -O0 -D DEBUG -I../.. -I../../include -I../../../libchip_sama5d4x -I../../../libboard_sama5d4x-Xplained -Dsama5d4x -DTRACE_LEVEL=3 -DDYN_TRACES -UDYN_TRACES -Dprintf=iprintf ../../source/pmecc.c -o debug_sama5d4x_Xplained/pmecc.o, ...) failed.
make (e=2): The system cannot find the file specified.


make[1]: *** [debug_sama5d4x_Xplained/pmecc.o] Error 2

ToolChains used: Cross ARM GCC, Arm Compiler 5, 6 and 4 of the DS-5 installation,

Alternative video output options?

toxxn — Thu, 27 Nov 2014 07:50:26 GMT

A couple months ago I reviewed the Atmel SAMA5D3 Xplained in a Road Test I participated in. The only thing that did not satisfy me was the lack of video output options. When I first tested the board I used terminal to access the board. I have since obtained a LCD Module and Adapter Board but at 4.3'' I find the screen a little small. I know there are larger LCD options out there, however I still dislike the lack of output options and want a much larger screen option. With the board still being rather new, there is a lack of information out there pertaining to tutorials and such, which is a little disappointing.

I was wondering if anyone has found a way to output the board to a larger monitor such as a computer monitor or TV without use of terminal or the on board LCD connector.

or even the option of use such screens using the on board LCD connector if output is otherwise impossible.

5V output on Arduino pins of SAMA5D3 Xplained?

taichichuan — Fri, 17 Oct 2014 16:59:37 GMT

Greetings!

When I put a meter across any of the 5V output pins on the Arduino connectors, I don't see any voltage. Do I have to power the board from the external power jack (J2)? If I power from J2, it looks like I need to short R3 & R177. Does that mean I need to remove resistors from the micro USB someplace? I don't want to feed power back down my USB cable if I can avoid it.

TIA,

Mike

Alternate pin assignment for PWM0 on SAMA5D3 Xplained

taichichuan — Fri, 17 Oct 2014 16:55:13 GMT

Greetings!

I'm trying to enable the PWM-L0 on the SAMA5D3 Xplained. However, it shows up as an alternate pin configuration in the manual. So, my question is, "How do I select the alternate pin configuration for peripherals on the SAMA5D3 Xplained?"

TIA,

Mike

LINUX4SAM - GPIO, I2C, interfaces, SD image

piotrva — Sun, 31 Aug 2014 20:01:46 GMT

Deal All,

I wonder if there is any description on how to use GPIO, I2C, SPI, IRQs under Linux4SAM?

It also would be nice if somebody could provide SD card image with Debian.

Thanks in advice for any replay.

Peter

init.d script not started

davorin — Sun, 27 Jul 2014 13:40:09 GMT

Followed the Debian SD card installation guide, and despite the non-working eth0 GB, the rest is working...

What I discovered is the fact, that a custom startup script won't start, though it starts fine on a Raspebrry Pi with wheezy Debian...

# Provides: agent

# Required-Start: $network

# Required-Stop:

# Default-Start: 2 3 4 5

# Default-Stop: 0 1 6

# Description: My Agent

I guess this has also to do with the fact the the GB ethernet port is unusable at the moment...or flaky as hell?

invalid hw address

davorin — Thu, 24 Jul 2014 10:38:02 GMT

Anyone else seeing this problem during boot?

Complains about missing MAC address, although the printed value is the environment setting from within u-boot...

macb f0028000.ethernet eth0: Cadence GEM at 0xf0028000 irq 26 (0a:63:5a:e7:fe:3e)
macb f0028000.ethernet eth0: attached PHY driver [Micrel KSZ9031 Gigabit PHY] (mii_bus:phy_addr=f0028000.etherne:07, irq=-1)
macb f802c000.ethernet (unregistered net_device): invalid hw address, using random

U-Boot environment:

ethact=gmac0
ethaddr=0a:63:5a:e7:fe:3e

Debian on flash

davorin — Thu, 24 Jul 2014 10:31:27 GMT

Guess I start a thread here instead of blowing up the sd card debian blog post (o;

I'm trying to get debian-7.5-bare-armhf-2014-07-07 onto the NAND flash....so far it does actually boot the image, but mounts the fs only as RO due to fsck errors...

Steps I've taken...

Downloaded debian-7.5-bare-armhf-2014-07-07
mkfs.ubifs -r debian-7.5-bare-armhf-2014-07-07 -m 2048 -e 126976 -c 1984 -o debian.ubifs.img
ubinize -vv -o debian.ubi -m 2048 -p 131072 ubifs.ini
flashed the image with the ./demo_linux_nandflash.sh script, just replaced the file name in demo_linux_nandflash.tcl:

set rootfsFile "debian.ubi"

Content of ubifs.ini for creating the UBI image:

[rootfs_volume]

mode=ubi

image=debian.ubifs.img

vol_id=1

vol_size=224MiB

vol_type=dynamic

vol_name=rootfs

vol_alignment=1

And here's the boot log:

ThumbEE CPU extension supported.
Registering SWP/SWPB emulation handler
UBI: attaching mtd7 to ubi0
UBI: scanning is finished
UBI: attached mtd7 (name "rootfs", size 248 MiB) to ubi0
UBI: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
UBI: VID header offset: 2048 (aligned 2048), data offset: 4096
UBI: good PEBs: 1977, bad PEBs: 7, corrupted PEBs: 0
UBI: user volume: 1, internal volumes: 1, max. volumes count: 128
UBI: max/mean erase counter: 0/0, WL threshold: 4096, image sequence number: 2000743801
UBI: available PEBs: 90, total reserved PEBs: 1887, PEBs reserved for bad PEB handling: 33
UBI: background thread "ubi_bgt0d" started, PID 681
input: gpio_keys.3 as /devices/gpio_keys.3/input/input0
at91_rtc fffffeb0.rtc: setting system clock to 2007-01-01 01:05:21 UTC (1167613521)
atmel_mci f0000000.mmc: version: 0x505
atmel_mci f0000000.mmc: using dma0chan5 for DMA transfers
atmel_mci f0000000.mmc: Atmel MCI controller at 0xf0000000 irq 17, 1 slots
atmel_mci f8000000.mmc: version: 0x505
atmel_mci f8000000.mmc: using dma1chan7 for DMA transfers
atmel_mci f8000000.mmc: Atmel MCI controller at 0xf8000000 irq 27, 1 slots
ALSA device list:
No soundcards found.
UBIFS: background thread "ubifs_bgt0_1" started, PID 694
UBIFS: mounted UBI device 0, volume 1, name "rootfs"(null)
UBIFS: LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes
UBIFS: FS size: 233508864 bytes (222 MiB, 1839 LEBs), journal size 9023488 bytes (8 MiB, 72 LEBs)
UBIFS: reserved for root: 0 bytes (0 KiB)
UBIFS: media format: w4/r0 (latest is w4/r0), UUID AA55C6C8-9E31-4D7C-A3A1-90D56F848A20, small LPT model
VFS: Mounted root (ubifs filesystem) on device 0:12.
devtmpfs: mounted
Freeing unused kernel memory: 116K (c05b5000 - c05d2000)
INIT: version 2.88 booting
[info] Using makefile-style concurrent boot in runlevel S.
[....] Starting the hotplug events dispatcher: udevdudevd[809]: starting version 175
. ok
[....] Synthesizing the initial hotplug events...done.
[....] Waiting for /dev to be fully populated...UBI error: ubi_open_volume: cannot open device 0, volume 1, error -16
done.
[....] Activating swap...done.
UBIFS: background thread "ubifs_bgt0_1" stops
[....] Checking root file system...fsck from util-linux 2.20.1
fsck: fsck.auto: not found
fsck: error 2 while executing fsck.auto for /run/rootdev
fsck died with exit status 8
failed (code 8).

[....] An automatic file system check (fsck) of the root filesystem failed. A manual fsck must be performed, then the system restarted. The fsck s!

[....] The root filesystem is currently mounted in read-only mode. A maintenance shell will now be started. After performing system maintenance, p.

Give root password for maintenance
(or type Control-D to continue):
root@arm:~#
root@arm:~#

I've also set FSCKFIX=no in /etc/default/rcS, but this doesn't bypass the fsck during boot.

Any ideas what's wrong/missing?

Anyone to share a Debian?

davorin — Wed, 23 Jul 2014 16:17:12 GMT

I see from the blog entries that some users were able to compile u-boot/kernel, build rootfs and wrap it together for an SD card...

As the kernel build fails from the build instructions I would like to ask if anyone cares to share his Debian SD card image for testing?

Board restore?

davorin — Wed, 23 Jul 2014 11:42:25 GMT

How can I restore the board to its original state?

Haven't seen any docs what exact Linux is installed...

Furthermore the package repositories is a bare minimum and /etc/opkg/base.conf is empty...

Now when setting a password to be able to remotely log in via SSH works...but after reboot it just stats:

sama5d3 login: username

Password:

Last login: Wed Feb 5 10:52:20 UTC 2014 on ttyGS0

Module is unknown

From the beginning it looked promising to have a small board with dual ethernet...but I guess I have soon to go back to Raspberry/Beaglebone Black with USB/Ethernet adapter...

FTP server or SFTP protocol available?

davorin — Wed, 23 Jul 2014 10:54:22 GMT

Today I received some boards to test for a customer...

From opkg output, besides that it does nothing when trying to do update/upgrade...

I see no FTP daemon package available...and neither file uploads via SFTP are possible....

Development Tools

gdillen — Fri, 14 Mar 2014 09:06:56 GMT

What development tools (IDEs) can I use for developing for the SAMA5D3 Xplained: Eclipse? Atmel Studio 5.1 / 5.2?

Thanks.

SAMA5D3 Xplained extension boards

Former Member — Mon, 03 Mar 2014 18:12:58 GMT

Let us know which extension boards already available in the market, you would like to be supported by the SAMA5D3 Xplained board.

For example, we inserted the WiPi in the USB Host connector of the board and the Linux distribution running immediately found the driver for it.