NFCのトピックError in Integration of NXP PN7150 NFC controller to android

Error in Integration of NXP PN7150 NFC controller to android

me_kirankg — Wed, 08 May 2019 06:45:29 GMT

Once all the steps mentioned in the Android porting document(https://www.nxp.com/docs/en/application-note/AN11690.pdf) is completed, the test application NfcFactoryTestApp doesn't work properly. NFC option is available in the settings window, but when its turned ON , dmesg shows the following error

pn54x_dev_write : i2c_master_send returned -107i2c-msm-v2 7575000.i2c : NACK: slave not responding, ensure its powered: 
msgs(n:1 cur:0 tx) bc(rx:0 tx:4) mode:FIFO slv_addr:0x28 MSTR_STS:0x0d1300c8 OPER:0x00000090

Definition added in platform tree file is as follows

&i2c_8 {        
pn547: pn547@28 {               
       compatible = "nxp,pn547";               
       reg = <0x28>;                
       clock-frequency = <400000>;           
       interrupt-parent = <&tlmm>;      
       interrupt-gpios = <&tlmm 10 0>;
       enable-gpios = <&tlmm 11 0>; 
       };
};

Any help will be appreciated.

Re: Error in Integration of NXP PN7150 NFC controller to android

jimmychan — Fri, 10 May 2019 16:39:03 GMT

Please double check the I2C connection and the I2C pins setting in device tree file.

For your reference, we have an example to connect PN7120 with i.MX6Q platform.

https://community.nxp.com/docs/DOC-329733

Re: Error in Integration of NXP PN7150 NFC controller to android

me_kirankg — Mon, 13 May 2019 01:45:52 GMT

Thank you for your response.

Re: Error in Integration of NXP PN7150 NFC controller to android

me_kirankg — Mon, 13 May 2019 01:47:18 GMT

I have checked the pin settings and solved the slave not responding issue. Now when i run the NFC factory test application i get the message

"NFC Controller is now in continuous RF ON mode - Press enter to stop"

There are no error in dmesg as well. How can i test whether its working or not. When i place a sample NFC card nothing happens.There is no messages in dmesg also. I tried enabling NFC from the settings and placed a sample card. It is not detected. Can any one tell me how to check whether the integration is working or not.