Intel Edison Compatibility(?)

Started by GeorgeVasil, September 15, 2017, 08:42:53 AM

GeorgeVasil

Hi,

I need to control an Intel Edison based board via powerbutton and seems to me that ATXRaspi does exaclty what i want.

The board is from here https://docs.emlid.com/reach/specs/ and it has one microusb port and 2 DF13 with 2 GPIO available as shown here:
https://docs.emlid.com/reach/img/reach/specs/reach-connectors.png

-GPIO46, GPIO77, PWM, SCL, SDA, TX, RX are connected to Intel Edison via buffers and are 3.3 V logic level, 5 V tolerant.
-TX and RX belong to UART1 on Intel Edison
-SCL and SDA belong to I2C1 on Intel Edison, I2C1 also could be used to communicate with internal magnetometer in MPU9250.
-PWM belongs to PWM3 GPIO183 on Intel Edison
-Time Mark input is connected directly to U-blox chip for low latency, it includes an over-voltage clamp, pull up and current limiting resistor.

I power this puppies with 2A powerbanks via their microusb ports and i need to safe poweron/shutdown via a button. They run linux.

Can you guys check if ATXRaspi does the job just using the 2 GPIOs available?

For your convenience -->

Intel Edison Hardware Guide .
https://www.intel.com/content/dam/support/us/en/documents/edison/sb/edison-module_HG_331189.pdf

Thank you,




Felix

The ATXRaspi has 2 GPIOs that are a very simple protocol.
Their function is described in the video and the guide page.
I think any such board is able to run a simple script (see sample in the guide for the Raspberry Pi) that asserts and monitors those two GPIOs depending on the power status of the board.

GeorgeVasil

Is there a problem if my setup draws less than 5V and its powered up via powerbank?

Felix

How much less?
The ATXRaspi runs at around 5V, I see no problem dropping that even 1 volt (maybe it works even at 3.3v) but I bever tried it myself at less than the pretty standard 5v input required by Pi boards.
It does not care where the input power comes from, it's just a pass through smart power switch.

GeorgeVasil

Manufacturer says : Inout voltage on USB and DF13 connectors   4.75 - 5.5 V

Furthermore I want to ask if I can charge the powerbanks, while the whole setup is off but wired.

Felix

The input to ATXRaspi is meant to always be powered. So the ATXRaspi board is "alive". It expects ~5V, 4.75V is perfectly fine as well.
Hence as long as your setup can deliver that, while charging or not, the ATXRaspi is OK.