The internal pull-ups on the IOIO pins are very weak. I would recommend connecting an external 2.2k pull-up if this is what the device calls for. Otherwise, you might be seeing glitches on this line.
On Wed, Jun 4, 2014 at 3:13 AM, Sarp Akal <[email protected]> wrote: > Unfortunately, device producer does not issue datasheet. Technical manual > says: 2.2k ohm pull-up, and it has logic high at pull-up voltage of host > interface for that interface logic level output. > To be on safe side I opened with DigitalInput.Spec.Mode.PULL_UP parameter > even device has pull-up. It worked. I hope I do not get any problem with > IOIO in the long run with this. > Thank you for the response. > > 4 Haziran 2014 Çarşamba 01:59:06 UTC+3 tarihinde Ytai yazdı: >> >> Can you please send the datasheet of that device. I cannot quite figure >> out the electrical interface from your description. >> On Jun 3, 2014 7:39 AM, "Sarp Akal" <[email protected]> wrote: >> >>> I am a software person. I got my IOIO board. I would like to connect >>> output of a device to the board Digital Input. >>> The device interface logic level output defined as 2.2k pull-up, and it >>> has logic high at pull-up voltage of host interface. >>> Can this device output be connected to the board directly with a common >>> ground? What should be DigitalInput.Spec.Mode.xxxx definition for this >>> device? >>> >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "ioio-users" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To post to this group, send email to [email protected]. >>> >>> Visit this group at http://groups.google.com/group/ioio-users. >>> For more options, visit https://groups.google.com/d/optout. >>> >> -- > You received this message because you are subscribed to the Google Groups > "ioio-users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/ioio-users. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "ioio-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/ioio-users. For more options, visit https://groups.google.com/d/optout.
