AnsweredAssumed Answered

Use PN7150 appears abnormal after read tags many times

Question asked by zhongan zhou on Aug 23, 2018

Use android7.1 system,Transplant with reference to AN11690.pdf,Now I found an abnormal bug in the test。

Install NFC TagWriter by NXP_v4.2.apk for read tags test,Maybe after more than 10 read tags tests, NFC did not respond,At this time, I use an oscilloscope to detect the waveform of IRQ without any waveform,I saw the following error in logcat log,The attachment is complete logcat and test video。

01-18 09:06:06.724 I/BrcmNfcNfa( 4526): nfa_dm_set_total_duration ()
01-18 09:06:06.724 I/BrcmNfcNfa( 4526): nfa_dm_check_set_config () tlv_len=4
01-18 09:06:06.724 I/BrcmNfcNfa( 4526): NFC_DiscoveryStart
01-18 09:06:06.724 I/BrcmNfcNfa( 4526): NFC_DiscoveryStart status: 0xe3
01-18 09:06:06.724 I/BrcmNfcNfa( 4526): nfa_dm_disc_sm_execute (): new state: IDLE (0), disc_flags: 0x21
01-18 09:06:06.724 I/BrcmNfcNfa( 4526): NFA got event 0x0600
01-18 09:06:06.724 I/BrcmNfcNfa( 4526): nfa_rw_handle_event event: NFA_RW_OP_REQUEST_EVT (0x600), flags: 00000001
01-18 09:06:06.724 E/BrcmNfcNfa( 4526): nfa_rw_handle_op_req: not activated

Attachments

Outcomes