984207 - NFC should be in card-emulation mode when NFC option is enable and screen is off.

Status: RESOLVED FIXED

(Firefox OS Graveyard :: NFC, defect)

Description

[Ken Chang[:kenkai]]

Sometimes, we need NFC chip in standby mode and being wake-up by some events. For example, enabling card emulation mode for some payment system while screen is off. That means we can not just turn off NFC when screen is off. That is why we need a standby/suspend mode for NFC.

Comment 1

[Wesley Huang [:wesley_huang] (EPM) (NI me)]

Hi Dimi,
Can we finish this before FL?

Comment 2

[Junichi Hashimoto]

Attachment: nfc-enabled-offscreen-discovering.pat

I made a patch for this. Could you review it?

Comment 3

[Dimi Lee [ooo 16.04 - 21.04］]

Comment on attachment 8429065 [details]
nfc-enabled-offscreen-discovering.pat

Hi, Junichi san
  Sorry the bug description may confuse you. This bug is to support NFC card emulation mode even when device is in suspend mode, so it should be handled in nfcd.
  You could create another bug for your patch :)

Comment 4

[Junichi Hashimoto]

OK. I'll move it Bug973480.

Comment 5

[Dimi Lee [ooo 16.04 - 21.04］]

Attachment: pull request to mozilla-b2g/platform_system_nfcd v1

- Add EnablePolling/DisablePolling API
- Move EnableDiscovery/DisableDiscovery into NFC Enable/Disable

When discovery is on, CE mode will on. Enable/disable polling only affect tag/device discover. So after applying this patch, the CE mode will always turn on as long as NFC is enabled

Comment 6

[Yoshi Cheng-Hao Huang [:allstars.chh][:allstarschh][:yoshi]]

https://github.com/mozilla-b2g/platform_system_nfcd/commit/d0aa65b140a45016975ed0ecf35f280dd336e1d3

Comment 7

[Yoshi Cheng-Hao Huang [:allstars.chh][:allstarschh][:yoshi]]

Hi Junichi-san,
Right now CE mode is on when enabling NFC, even when Screen is locked.

If this doesn't fit your use case, please file another bug for discussing this.

Comment 8

[Junichi Hashimoto]

Seems work for our case too. I will try that, thank you.