Home/Support/Support Forum/definition of Digital Output High/Low

definition of Digital Output High/Low

0 votes
Can you explain the meaning of the command: ATDn 0x04 or 0x05: "Digital Output, High" and "Digital Output, Low"

Does this mean the DIOn output responds to a change in its matching input with a high or low response?
What happens if the DIOn input is a pulse with width 1ms. Does the output change twice? The doc seems to suggest the wireless DIO follows the wired DIO so maybe the output signal simple follows the input signal.
asked Nov 6, 2015 in IEEE 802.15.4 by jekain314 New to the Community (5 points)

Please log in or register to answer this question.

2 Answers

0 votes
Which XBee modules are you referring to and what firmware version is installed?

The function of a DIO Output High or Low (ATDnx)is in reference to setting the default value as either an output High (3V) or Low (0V).
answered Nov 9, 2015 by mvut Veteran of the Digi Community (12,351 points)
Product family XB24
Function Set xbee 802.15.4
Firmware 10ef
For both xbees

I also see the command ATPR (pullup resistors) This is defaulted to 0xFF so that all DIO signals are pulled up by default. Is this true even if I am using ATD1 = 0x04? In my circuit, to I need to set the ATPR=0x00 to keep the signal defaulted to 0V?
0 votes
Have you looked through http://knowledge.digi.com/articles/Knowledge_Base_Article/XBee-802-15-4-Digital-Input-Output-Line-Passing/?q=xbee+DIO+line+passing&l=en_US&fs=Search&pn=1

to see how to properly set up the DIO line passing function?
answered Nov 9, 2015 by mvut Veteran of the Digi Community (12,351 points)