How to use the analog input?

Hello,

I would like to read the analog input from the CPU under Linux and I wonder how should I do this. I can see 12 analog inputs on the UDOO pinout diagram but they seems to be connected to the SAM3x, am I right?
Thank you.

 

You can't, since no pin, as you said, is connected to i.MX 6.

 

OK thanks for this clear answer

Is there a way to program the Arduino using Arduino IDE on Linux x64? I don't have UDOObuntu on my UDOO but a custom Linux based on official https://github.com/UDOOboard/Kernel_Unico sources.

 

I did try to copy the bossac exec in my Arduino IDE (http://arduino.cc/download.php?f=/arduino-1.5-linux64.tgz) path but it doesn't work (Device not found). The "Processor" and "Serial port" options stay disabled.

I followed this tutorial : http://www.udoo.org/tutorial/program-udoos-arduino-processor-external-pc/

 

You should follow this guide in order to use Arduino IDE ArmHF on UDOO running a custom Linux.

 

This is still an old 32-bits version of Arduino IDE. I'm trying to figure out how to make it work on my 64-bits computer.
Hm there is even lib compiled for ARM in it :

Is that an Arduino IDE compiled to be run directly on the UDOO?

 

How to program UDOO Dual/Quad from external PC. There are also instructions for 64 bit, read till the end.

 

I downloaded Arduino IDE 1.5.4 for Linux x64 here: http://arduino.cc/download.php?f=/arduino-1.5.4-linux64.tgz
I downloaded the Bossac file for Linux x64 here: http://udoo.org/download/files/Bossac/bossac_linux64.tar.gz
I followed all the steps from the tutorial here: http://udoo.org/docs/Arduino/Program_UDOO_Arduino_Processor_From_External_PC
I'm able to run Arduino IDE but the "Tools > Port" option stay disabled. The USB port is connected to CN6 USB and J16 and J18 are disabled.
In ls /dev I can see the board as ttyUSB0.
I selected Arduino Due (Programming Port) and here is what I get:

I get the same output with Native USB Port.

 

If you plug J18 and reboot are you able to see the Linux bash? We have to exclude that the serial-to-usb converter is burned.

 

Yes, I can log in using picocom at the same USB port:

 

Actually I don't know how the Kernel UNICO works with bossac.
Would it be a problem for you to shift to the new Kernel? You'd get big improvements in performance. It will be official in short time.
Kernel 3.14.56: https://github.com/UDOOboard/linux_kernel

 

No this isn't an issue. Does that kernel support bossac? I'd say, arduino programing?

 

Yes it does.
https://github.com/UDOOboard/bossac
It support Arduino programming internally. Externally it's coming for now you have to rely on the Web Control Panel for this

 

OK thanks. I'll try it.

 

Which .dts file do you use? I've compiled with imx6q-udoo-lvds7.dts (I have the 7" touch screen) :

Code:

MAKE_JOBS=$(cat /proc/cpuinfo | grep processor | wc -l)
TOOLCHAIN=arm-linux-gnueabihf-
make ARCH=arm CROSS_COMPILE=$TOOLCHAIN udoo_quad_defconfig
make -j$MAKE_JOBS ARCH=arm CROSS_COMPILE=$TOOLCHAIN uImage LOADADDR=0x10008000 modules
make -j$MAKE_JOBS ARCH=arm CROSS_COMPILE=$TOOLCHAIN imx6q-udoo-lvds7.dtb

I get in U-Boot after loading:

 

Dear cyrilf,
in the uboot you have to change fdt_file variable because in the uboot it directs to "imx6q-udoo.dtb"

 

Well it boots now, I just had to update my boot.txt file

But the touch events and the Wi-Fi arent' supported. Here are my DTS files: imx6q-udoo-lvds7.dts and imx6qdl-udoo.dts

 

Dear cyrilf,
regarding the Wi-Fi probably it's an error due to defconfig missing.
Regarding the touch you should search for i2c3

 

As you can see in my imx6qdl-udoo.dts file, I2C3 is enabled.
Which defconfig file do you use to support UDOO Quad hardware? I've used udoo_quad_defconfig.

 

On this concern, another thing you could check for the Wi-Fi is if you installed ralink-firmware package
Can't remember if for LVDS you need some package, but I don't believe. Please post the output of dmesg on a pastbin