imx 233 + lirc + irc out

nextstep · March 07, 2016, 06:59:46 PM

hello,

I search to connect my irc out to a imx233 maxi, but i am a noob, can you help me ?

best regards

lambda · March 08, 2016, 01:58:34 AM

Quote from: nextstep on March 07, 2016, 06:59:46 PM
I search to connect my irc out to a imx233 maxi, but i am a noob, can you help me ?

The answer to this question probably is not going to be useful to you.

Maybe one of those helps you:
https://www.olimex.com/Products/Modules/Interface/MOD-IRDA/open-source-hardware
https://www.olimex.com/Products/Modules/Interface/MOD-IRDA+/open-source-hardware

If not, maybe you can explain your problem in more detail.

Harald

nextstep · March 11, 2016, 11:50:31 PM

OK,

I use imx233 maxi debian kernel 3.12.

I can to use keyes KY-005 IR transmitter

i install lirc, now i find a /dev/lircd but not a lirc0

Thank for you reply

Best regards

lambda · March 12, 2016, 02:07:54 PM

I guess you are missing the driver/kernel module?

(I have no idea which one you need. Also this depends on how you are wiring the transmitter to the board, of course.)

If you don't know it already:
http://www.lirc.org/html/configuration-guide.htm has a quite detailed description.

HTH,
Harald

nextstep · March 16, 2016, 07:58:20 PM

thanks,

yes, i see the problem....

[ ok ] Cleaning up temporary files... /tmp.
[info] Loading kernel module lirc_dev.
libkmod: ERROR ../libkmod/libkmod.c:554 kmod_search_moddep: could not open moddep file '/lib/modules/3.12.0-rc7/modules.dep.bin'
[info] Loading kernel module lirc_rpi.
libkmod: ERROR ../libkmod/libkmod.c:554 kmod_search_moddep: could not open moddep file '/lib/modules/3.12.0-rc7/modules.dep.bin'
[ ok ] Activating lvm and md swap...done.

my idea is connect via gpio 3.3V + gnd + gpio 33

Now, i must repair my module problem

Best regards

nextstep · March 16, 2016, 08:51:38 PM

hummm, not find LIRC in menukernel ?.!

LIRC module exist in 3.12.6 ? or i must take a new kernel ?

lambda · March 17, 2016, 12:52:01 AM

Yes, 3.12 has some LIRC support. In the kernel tree it is somewhere below drivers/media/rc/ don't know about menuconfig, maybe you have to enable something else first, to make it available.

BTW, IIRC not all of LIRC has been merged into the mainline kernel. So maybe you need to get some bits from LIRC sources... (I never tried transmitting IR so I don't know much ...)

HTH,
Harald

nextstep · March 17, 2016, 10:20:01 PM

ok, i try linux 4.5, make kernel etc work fine, i use http://www.jann.cc/2012/08/23/building_a_kernel_3_x_for_the_olinuxino_from_sources.html for help

but..

HTLLCHTLLCHTLLCHTLLCLC

U-Boot 2013.04-dirty (Jun 26 2013 - 11:46:21)

CPU: Freescale i.MX23 rev1.4 at 454 MHz
BOOT: SSP SD/MMC #0
DRAM: 64 MiB
MMC: MXS MMC: 0
*** Warning - bad CRC, using default environment

In: serial
Out: serial
Err: serial
Net: Net Initialization Skipped
No ethernet found.
Hit any key to stop autoboot: 0
mmc0 is current device
SD/MMC found on device 0
628 bytes read in 88 ms (6.8 KiB/s)
Importing environment from mmc (uEnv.txt)...
6400168 bytes read in 1974 ms (3.1 MiB/s)
10068 bytes read in 108 ms (90.8 KiB/s)
Booting from mmc ...
## Flattened Device Tree blob at 41000000
Booting using the fdt blob at 0x41000000
Loading Device Tree to 43b67000, end 43b6c753 ... OK

Starting kernel ...

system freeze..... hard is the rock....

where i am bad...

root@debvm01:/SRC/linux-4.5# ls -laFh /mnt/DISK1/boot/
total 13M
drwxr-xr-x 2 root root 4,0K mars 16 21:05 ./
drwxr-xr-x 22 root root 4,0K nov. 11 2013 ../
-rw-r--r-- 1 root root 9,9K mars 17 20:51 imx23-olinuxino.dtb
-rw-r--r-- 1 root root 2,8K mars 17 20:51 imx23-olinuxino.dts
-rw-r--r-- 1 root root 628 nov. 11 2013 uEnv.txt
-rwxr-xr-x 1 root root 6,2M mars 17 20:51 zImage*
-rw-r--r-- 1 root root 6,2M mars 17 21:02 zImage_dtb

hummm, long is make.....

best regards

lambda · March 18, 2016, 02:00:37 AM

Presumably something goes wrong when jumping into the kernel - maybe wrong entry point? Or maybe your kernel wasn't loaded at all? (There is no message about it in your output.)
I never tried to load a zImage with u-boot. I'm always using uImage files. This is the metadata:

$ file uImage
uImage: u-boot legacy uImage, ARM OpenWrt Linux-4.1.13, Linux/ARM, OS Kernel Image (Not compressed), 1541248 bytes, Sun Dec 13 23:13:34 2015, Load Address: 0x40008000, Entry Point: 0x40008000, Header CRC: 0x2BED84E5, Data CRC: 0x8D0D4CB7

Maybe check your uEnv.txt against above parameters...

HTH,
Harald

nextstep · March 18, 2016, 08:20:22 PM

hello,

i retry to compil kernel and :

Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
root@debvm01:~# uname -a
Linux debvm01 4.5.0 #1 Fri Mar 18 19:05:54 CET 2016 armv5tejl GNU/Linux
root@debvm01:~# ls /dev
autofs mem stdin tty23 tty40 tty58 vcs5
block memory_bandwidth stdout tty24 tty41 tty59 vcs6
bus mmcblk0 tty tty25 tty42 tty6 vcsa
cachefiles mmcblk0p1 tty0 tty26 tty43 tty60 vcsa1
char mmcblk0p2 tty1 tty27 tty44 tty61 vcsa2
console mmcblk0p3 tty10 tty28 tty45 tty62 vcsa3
cpu_dma_latency net tty11 tty29 tty46 tty63 vcsa4
disk network_latency tty12 tty3 tty47 tty7 vcsa5
fd network_throughput tty13 tty30 tty48 tty8 vcsa6
full null tty14 tty31 tty49 tty9 watchdog
i2c-0 ppp tty15 tty32 tty5 ttyAMA0 watchdog0
iio:device0 ptmx tty16 tty33 tty50 ttyAPP0 watchdog1
input pts tty17 tty34 tty51 ubi_ctrl xconsole
kmsg random tty18 tty35 tty52 urandom zero
lirc0 root tty19 tty36 tty53 vcs
lircd rtc0 tty2 tty37 tty54 vcs1
log shm tty20 tty38 tty55 vcs2
loop0 snd tty21 tty39 tty56 vcs3
MAKEDEV stderr tty22 tty4 tty57 vcs4

good small imx233

Now go to try the led emiter and a lot of capter i have ( nfc, gps, gsm, etc)

Thank a lot, lambda for you support !

When i am good with mi ir emiter, i be back with config.

Best regards

nextstep · March 20, 2016, 09:39:43 AM

I Search, i search.

But i see all exemple use GPIO, is gpio = 0 or gpio = 1

Gpio is the good way to send more complex code over IR ?

Or i must search over I2c or spi or another ?

Best regards

lambda · March 21, 2016, 09:35:55 PM

I'm sorry, I don't entirely understand your question (grammatically).

Which bus to use depends on what your HW supports. I think i2c and spi are rather uncommon for IR, so probably not. Maybe using the uart interface of your imx233 board is a good way to go. There is a lirc_serial module in staging, that could work. (Haven't looked at the data sheet for your transmitter, so I might be wrong.)

Using GPIOs might work too, but as this is entirely controlled by software, getting the timing right might be a bit tricky...

HTH,
Harald

nextstep · March 21, 2016, 10:43:02 PM

Thank for you re reply,

ok, i must work with uart and understand this.

Easy on arduino, but a long way on imx linux.

You think uart and a C program ?

Best regards

lambda · March 22, 2016, 10:24:17 PM

Actually, if you know how to do it on arduino, it should be quite easy on linux too?

I don't think you need a C program. The lirc_serial module I mentioned previously should be fine. (If it lacks some feature you need rather fix it (and submit mainline) than write your own.)

And talking to lirc is high level stuff - so should be doable in any programming langauge, I guess.

HTH,
Harald

nextstep · April 01, 2016, 08:31:43 PM

thk lambda, you are here

Yes, i try 4.5 kernel now i must go to mainline

arduino is more easy, take lib, and take exemple, modif this and is run.

i now try, imx233 and my new cherry trail, lot of time with arduino .....

search for mha or v outup on gpio on imx2333 versus arduino ? because my daugther wanna a led ruban with olinuxino + ir ...

where find the time for all this search, thats the question

Best regards