1016294 - NFC: Assertion failed: (rfst != NUMBER_OF_NFC_RFSTS), function nfc_create_rf_intf_activated_ntf

Status: RESOLVED WONTFIX

(Firefox OS Graveyard :: NFC, defect)

Description

[Christoph Diehl [:posidron]]

Attachment: callstack

% ./run-emulator.sh

% telnet localhost 5554
[...]
nfc nci rf_intf_activated_ntf 0

Comment 1

[Thomas Zimmermann [:tzimmermann] [:tdz]]

Hi,

That comes from an invalid state. Did you switch on NFC?

Comment 2

[Christoph Diehl [:posidron]]

No, I was running it out of the box.

Fwiw, I have used 'emulator-jb' but only because I had trouble in compiling 'emulator' and 'emulator-kk' on MacOS.

Comment 3

[Thomas Zimmermann [:tzimmermann] [:tdz]]

NFC is only supported by emulator-jb AFAIK. And you need to switch on NFC in the settings app first. The only thing we could improved here is the error message.

Comment 4

[Christoph Diehl [:posidron]]

Ah, roger. In that case I guess we can mark this as invalid?

Comment 5

[Thomas Zimmermann [:tzimmermann] [:tdz]]

Yes, but could you leave a comment in bug 1015127? We're collecting CLI problems there.

Comment 6

[Christoph Diehl [:posidron]]

I just tested it again with NFC enabled.
Executing the command twice results in the same crash.

Comment 7

[Dimi Lee [:dimi]]

(In reply to Christoph Diehl [:cdiehl] from comment #6)
> I just tested it again with NFC enabled.
> Executing the command twice results in the same crash.

The reason is also invalid state, the first "nfc nci rf_intf_activated_ntf 0" command changes nfc to poll activate state. And in this state trigger another activated notification is not permitted in NFC spec.

Comment 8

[Thomas Zimmermann [:tzimmermann] [:tdz]]

Hi Christoph,

If you look into the NCI spec [1], Sec 5.2 you'll find the state machine of an NCI device. Many of the commands you enter activate transitions from one state to another. Entering a command in the wrong state, will kill the process. I know it's not pleasant to use, but helps a lot with debugging. ;)

[1] http://members.nfc-forum.org/specs/spec_dashboard/

Comment 9

[Christoph Diehl [:posidron]]

Attachment: logcat

Comment 10

[Christoph Diehl [:posidron]]

Attachment: emulator

Comment 11

[Thomas Zimmermann [:tzimmermann] [:tdz]]

(In reply to Christoph Diehl [:cdiehl] from comment #10)
> Created attachment 8430008 [details]
> emulator

This is a different log than the one discussed on irc.

In [1] you can see that rf_state is 0 (IDLE), which means that discovery has not been activated by nfcd before the test started.

[1] https://gist.github.com/posidron/10051214527c4b0bf2cd

Comment 12

[BMO Automation]

Firefox OS is not being worked on