PX30 Android8.1 + PN7150

[chaoxiandandan]

Dear,

I tried to port PN7150 to PX30 Android8.1, but something happened outside of the documentation
Currently, pn544 is generated under dev/, but after entering the setting, the NFC state is gray and unavailable, and the log prompts an error

Kernel log:

chaoxiandandan_0-1724290974504.png

init: Parsing file /system/etc/init/[email protected]...

init: starting service 'nxpnfc_hal_svc'...

init: property_set("ro.nfc.port", "I2C") failed: property already set

init: Service 'nxpnfc_hal_svc' (pid 221) killed by signal 6

init: Sending signal 9 to service 'nxpnfc_hal_svc' (pid 221) process group...

init: starting service 'nxpnfc_hal_svc'...

The logcat log message is as follows:

08-21 11:53:35.184 941 1075 W com.android.nfc: Waited one second for [email protected]::INfc/default. Waiting another...
08-21 11:53:38.186 941 1075 W com.android.nfc: Waited one second for [email protected]::INfc/default. Waiting another...
08-21 11:53:38.571 1420 1420 E [email protected]: hw_get_module nfc_nci failed: -2
08-21 11:53:38.572 1420 1420 E [email protected]: Passthrough failed to load legacy HAL.
08-21 11:53:38.572 1420 1420 E [email protected]: Could not get passthrough implementation for [email protected]::INfc/default.
08-21 11:53:38.572 1420 1420 F [email protected]: Error while registering nfc AOSP service: 1

chaoxiandandan_1-1724291147859.png

In this case, what is the problem?

[chaoxiandandan]

日志如下

[danielchen]

Hi  @chaoxiandandan :

I would suggest check the I2C connection.  It seems not work.

Regards

Daniel

[chaoxiandandan]

我们现在就是通过i2c1连接

chaoxiandandan_0-1724311455062.png

[weidong_sun]

Dear @chaoxiandandan ,

Sorry! I didn't notice your dmesg logs has been attached in the post.

I checked the log, and found NFC reader driver was not correctly loaded due to I2C issue.

Then I checked your device tree:

weidong_sun_0-1724811196681.png

(1) interrupt-gpios

gpio1 should be No.1 gpio group of your platform, but the concrete GPIO pin was not give here.

for example, assume you are using GPIO1's pin 21 to be interrupt gpio, the line should be like this:

interrupt-gpios = <&gpio1 21 0>;

(2) enable-gpios

Similarly, assume you are using GPIO1's pin 20 to be enable GPIOs.

enable-gpios = <&gpio1 20 0>;

Change your dts, then try!

Thanks!

Regards,

weidong

[danielchen]

Hi @chaoxiandandan :

 please send the schematics (include the connection between pn7150 and host）， device tree to us for further analyzing.  You can attach them here,  or you can send to us via a new ticket. Thanks

Regards

Daniel

[danielchen]

可以用示波器看I2C 引脚上是否有波形

[chaoxiandandan]

这边测试波形结果：I2C一直保持高电平起始状态，没有找到从机地址。

chaoxiandandan_0-1724316294947.png

[chaoxiandandan]

这是我们nfc的原理图

chaoxiandandan_0-1724318091788.png

[weidong_sun]

Dear @chaoxiandandan ,

Could you give me the following information?

- Using adb tool to log in your android board, and run dmesg to get boot logs, then share it with us.

I would like to check if NFC reader driver has been loaded successfully.

Thanks!

Regards,

weidong

[chaoxiandandan]

There are two logs as follows

dmesg_202408281442.txt

logcat_202408281442.txt

[danielchen]

Hi @chaoxiandandan :

Could you please let me know the status after you modified the device tree?

Regards

Daniel

[chaoxiandandan]

Now enter the Settings app and check that nfc is gray and unclickable

The document I use is：AN11690.pdf

[danielchen]

Hi @chaoxiandandan 

Please send the latest DMESG LOG to us for further analyzing.

Regards

Daniel

[chaoxiandandan]

The demsg log is almost identical to the one uploaded a few days ago

[danielchen]

Hi @chaoxiandandan 

please check why the service "nxpnfc_hal_svc" is killed by signal 6

danielchen_0-1725245202827.png

Regards

Daniel

[chaoxiandandan]

My first question is about the service "nxpnfc_hal_svc", why is this problem and is there something missing

chaoxiandandan_0-1725255669349.png

Because the service "nxpnfc_hal_svc" is in your drive, I'm asking you

[danielchen]

Hi @chaoxiandandan :

For this error,  "    [ 14.750091] init: Service 'nxpnfc_hal_svc' (pid 482) killed by signal 6 "

NFC service is killed by Signal 6 in your android system.

Signal 6 is commonly used by libc and other libraries to abort the program in case of critical errors.  Since Android 8.1 is quite old,  I suspect if there is a mismatch issue in your environment. like the compile tools or other.   But I don't have the board to test this issue, sorry.

Regards

Daniel