Loop in Arduino

Hi!
I'm just starting to test some things with the arduino.
I started doing the hello world programs of a blinking LED and so on and I was also able to get the LM35 temp sensor working.
I tried to upload a program but it did not do anything, so I got back to test the blinking LED again
I do not know what happens but it does not loop the main program. Now it just Blinks one time.
Any ideas?

 

On which Udoo? Neo/Quad/Dual?

 

Udoo quad, it just blinks the led once and stops

 

No errors verifying nor while uploading the program in the arduino IDE 1.6.9

 

Du you program your Udoo from the internal Arduino IDE or an external on your PC? Perhaps try this solution (also when programming internally):

• Plug the jumper J22 for 1 second, then remove it (to erase the old sketch programmed in SAM3X);
  
  
• Plug the jumper J16 for 1 second, then remove it (to reset the SAM3X);
  

 

Nothing happens... just blinks once

 

I Program it via external PC, in the SD card I'm having an Android SO

 

I am sorry, I have no experience with Android. For someone else to be able to help did you follow the instructions here? http://www.udoo.org/docs/Android/UDOO_Switch_Between_Adb_Debug_And_ADK_Connection.html

 

Hi @waltervl , just found the mistake. I had some previous programs within Android that were overlapping some inputs and outputs within the arduino. So the output had different values and caused to switch the led off. I had to uninstall the programs in Android.
Thanks!