INT0 and INT1 Interrupt Pin of Arduino Yun

Official Hardware Classic Yún
1

Hi All,

Just want to ask if somebody tried attaching interrupts to INT0(pin3) and INT1(Pin2)
with the Wire library is added and driving I2C devices?
Will there be a problem if I use the I2C and interrupt on INT0 and INT1 together?
Thanks in advanced..

Good Day,
Leo

2

I am running wire with Interrupts and it works fine

3

Hi Mr. Mike,

I mean using external interrupt on INT0 and INT1 that will trigger on falling edge?
I saw on the picture of the Yun pinout that the pin 2 and 3 of Yun is connected to SDA and SCL.
And the syntax is attachInterrupt(0, function1, FALLING) and attachInterrupt(1, function2, FALLING).
Will this have a conflict on the I2C communication on slave devices?

The pins (0, 1, 2, 3, 7) are interrupt capable pins but connected somewhere else.

  • Like the pin 0 and 1 are connected to the linux lininio serial port.
    Don't know yet if will have an effect if Bridge library is incorporated on the program
  • pins 2 and 3 are connected to the SDA and SCL of Yun
  • pin 7 is for connected for the handshake of the linux processor
    tried to use this pin as an interrupt on its own but don't work
    "attachInterrupt(7, function1, FALLING)".

I just want 2 interrupt pins externally triggered by edge (either FALLING or RISING)
without conflicts to other stuff. Is there a way to do it?

Thanks,
Leo

yun_by_pighixxx-d6qvbq4.png
yun_by_pighixxx-d6qvbq4.png841×595 173 KB

4

Handshake between the atmega and linux processor is not used so you can use pin 7 as interrupt source.

In the attachInterrupt function you have to specify the interrupt number and not the pin, so if you want to use the pin 7 you have to use interrupt 4 https://www.arduino.cc/en/Reference/AttachInterrupt

it should be :

attachInterrupt(4, function, FALLING)
5

Hi Sir Angelo,

Thanks for noting the correct number assignment for the interrupt for pin 7
which is number for 4 for assigning the interrupt.
And will not affect any linux processor operations.
I got confused with the numbers and the note on the picture.
I will try this.

Good Day,
Leo

6

Plan B:

Yun Shield + Arduino Mega

Arduino Mega:

External Interrupts: 2 (interrupt 0), 3 (interrupt 1), 18 (interrupt 5), 19 (interrupt 4), 20 (interrupt 3), and 21 (interrupt 2). These pins can be configured to trigger an interrupt on a low value, a rising or falling edge, or a change in value.

Count 20 (interrupt 3), and 21 (interrupt 2) share with I2C, you still have 2 (interrupt 0), 3 (interrupt 1), 18 (interrupt 5), 19 (interrupt 4).

https://www.arduino.cc/en/Main/arduinoBoardMega

7

Hi Mr. Sonny,

Is the "Yun Shield" is the same with the Dragino that is capable of having the same webpage as the original Arduino Yun? Where I can display my files on the browser via the "/mnt/sda/arduino/www" path?
And can perform all "LuCi and cURL" Process commands? Thanks..

Good Day,
Leo

8

lpestanas:
Hi Mr. Sonny,

Is the "Yun Shield" is the same with the Dragino that is capable of having the same webpage as the original Arduino Yun? Where I can display my files on the browser via the "/mnt/sda/arduino/www" path?
And can perform all "LuCi and cURL" Process commands? Thanks..

Good Day,
Leo

Yes.