Hello Guys, we are working on some very interesting smartphone accessories and after evaluating the Android ADK, the IOIO OTG and the normal UART over USB we decided to move forward with the IOIO OTG. Till now it worked pretty great but we are now at the point where we need to to able to choose the right master and slave based on some simple rules. We are using the newest IOIO OTG from SeeedStudio, flashed the newest firmware on it and using also the newest Android library existing on GITHUB. We have the IOIO perfectly running as a master. So the IOIO is charging the phone and communication is working fine. But every time we want to use the phone as the master the only thing we are getting is the power supply from the phone but no communication. We tried it with different position of the switch, Samsung Galaxy S4 and other phones and different micro USB cables (even a hand soldered USB micro USB connector) but it is always the same: power is coming from the phone but there is no communication between phone and IOIO. We plugged in the same phones also a normal USB memory stick and here the OTG function works fine. The stick is getting power and is communication. But with the IOIO OTG the devices is never working as a slave.
Is here anyone who can give us some advice how to solve this problem and get the IOIO running - forced only as a slave (so no choice and no negotiation) - manually switched between master and slave (for example by an additional switch, but still no auto mode or negotiation) - automatically switched (based on the host negotiation protocol HNP) We are trying already since several days only to find this one thing out because this is the only thing missing to have our prototype fully running. Thanks in advance for your help and let me know if you need any other information from my side. Best, Alex -- 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/groups/opt_out.
