Presence check failed. Tag lost

[ifzhao]

hi guys,

I'm using pn548C2 and here a problem is bothering me. While NFC cards is well placed close to NFCC RF, but it fail to do presence check. The key part of log goes as below:

The problem is read back message is not good, which is bold. But I don't know why. Do any one of you have any idea about the RX message?

11-22 09:23:03.788 1096 1870 D BrcmNfcJni: nativeNfcTag_doPresenceCheck
11-22 09:23:03.788 1096 1870 D BrcmNfcJni: nativeNfcTag_doPresenceCheck: handle=0
11-22 09:23:03.788 1096 1870 I BrcmNfcNfa: NFA_RwPresenceCheck
11-22 09:23:03.788 1096 1870 E BrcmNfcNfa: GKI_send_event 3 4
11-22 09:23:03.789 1096 1870 E BrcmNfcNfa: GKI_send_event 3 4 done
11-22 09:23:03.789 1096 1265 I BrcmNfcNfa: NFA got event 0x0600
11-22 09:23:03.789 1096 1265 I BrcmNfcNfa: nfa_rw_handle_event event: NFA_RW_OP_REQUEST_EVT (0x600), flags: 00000021
11-22 09:23:03.789 1096 1265 I BrcmNfcNfa: nfa_rw_handle_op_req: op=0x03
11-22 09:23:03.789 1096 1265 I BrcmNfcNfa: nfa_sys_ptim_stop_timer d68d8b38
11-22 09:23:03.789 1096 1265 I BrcmNfcNfa: ptim timer stop
11-22 09:23:03.789 1096 1265 I BrcmNfcNfa: Stopped presence check timer (if started)
11-22 09:23:03.789 1096 1265 I BrcmNfcNfa: nfa_rw_presence_check protocol=3
11-22 09:23:03.789 1096 1265 I BrcmNfcNfa: RW_T3tPresenceCheck
11-22 09:23:03.789 1096 1265 I BrcmNfcNfa: RW_T3tPresenceCheck idle
11-22 09:23:03.789 1096 1265 I BrcmNfcNfa: nfc_ncif_send_cmd()
11-22 09:23:03.789 1096 1265 I BrcmNfcNfa: nfc_ncif_check_cmd_queue : Writing to HAL...
11-22 09:23:03.789 1096 1265 D NfcAdaptation: NfcAdaptation::HalWrite
11-22 09:23:03.790 1096 1265 D NxpExtns: const nxp::CNfcParam *nxp::CNfcConfig::find(const char *) const found MIFARE_READER_ENABLE=(0x1)
11-22 09:23:03.790 1096 1287 D NxpTml : PN54X - Write requested.....
11-22 09:23:03.790 1096 1287 D NxpTml : PN54X - Invoking I2C Write.....
11-22 09:23:03.791 1096 1287 D NxpNciX : len = 7 > 210804FFFF0100
11-22 09:23:03.791 1096 1287 D NxpTml : PN54X - I2C Write successful.....
11-22 09:23:03.791 1096 1287 D NxpTml : PN54X - Posting Fresh Write message.....
11-22 09:23:03.791 1096 1287 D NxpTml : PN54X - Tml Writer Thread Running................
11-22 09:23:03.792 1096 1289 D NxpHal : write successful status = 0x0
11-22 09:23:03.792 1096 1265 I BrcmNfcNfa: final status=0
11-22 09:23:03.792 1096 1265 I BrcmNfcNfa: presence_check_timeout=500
11-22 09:23:03.792 1096 1265 I BrcmNfcNfa: nfa_sys_ptim_start_timer d68d8b38
11-22 09:23:03.792 1096 1265 I BrcmNfcNfa: ptim timer start
11-22 09:23:03.794 1096 1286 D NxpTml : PN54X - I2C Read successful.....len = 4
11-22 09:23:03.794 1096 1286 D NxpTml : PN54X - Posting read message.....
11-22 09:23:03.794 1096 1286 D NxpNciR : len = 4 > 41080100
11-22 09:23:03.795 1096 1289 D NxpHal : read successful status = 0x0
11-22 09:23:03.795 1096 1289 D NfcAdaptation: NfcAdaptation::HalDeviceContextDataCallback: len=4
11-22 09:23:03.795 1096 1289 E BrcmNfcNfa: GKI_send_event 3 1
11-22 09:23:03.795 1096 1289 E BrcmNfcNfa: GKI_send_event 3 1 done
11-22 09:23:03.795 1096 1286 D NxpTml : PN54X - Read requested.....
11-22 09:23:03.795 1096 1265 I BrcmNfcNfa: NFC received rsp gid:1
11-22 09:23:03.795 1096 1286 D NxpTml : PN54X - Invoking I2C Read.....
11-22 09:23:03.799 1096 1286 D NxpTml : PN54X - I2C Read successful.....len = 5
11-22 09:23:03.799 1096 1286 D NxpTml : PN54X - Posting read message.....
11-22 09:23:03.799 1096 1286 D NxpNciR : len = 5 > 6108020300
11-22 09:23:03.799 1096 1289 D NxpHal : read successful status = 0x0
11-22 09:23:03.799 1096 1289 D NfcAdaptation: NfcAdaptation::HalDeviceContextDataCallback: len=5
11-22 09:23:03.799 1096 1289 E BrcmNfcNfa: GKI_send_event 3 1
11-22 09:23:03.799 1096 1289 E BrcmNfcNfa: GKI_send_event 3 1 done
11-22 09:23:03.799 1096 1265 I BrcmNfcNfa: NFC received ntf gid:1
11-22 09:23:03.799 1096 1286 D NxpTml : PN54X - Read requested.....
11-22 09:23:03.800 1096 1286 D NxpTml : PN54X - Invoking I2C Read.....
11-22 09:23:03.800 1096 1265 I BrcmNfcNfa: t3t stat2=3
11-22 09:23:03.800 1096 1265 I BrcmNfcNfa: nfa_rw_cback: event=0x65
11-22 09:23:03.800 1096 1265 I BrcmNfcNfa: nfa_rw_handle_t3t_evt evt=101,stat=3
11-22 09:23:03.800 1096 1265 I BrcmNfcNfa: nfa_sys_ptim_stop_timer d68d8b38
11-22 09:23:03.800 1096 1265 I BrcmNfcNfa: ptim timer stop
11-22 09:23:03.800 1096 1265 I BrcmNfcNfa: Stopped presence check timer (if started)
11-22 09:23:03.800 1096 1265 I BrcmNfcNfa: nfa_dm_act_conn_cback_notify (): event:0xF
11-22 09:23:03.800 1096 1265 D BrcmNfcJni: nfaConnectionCallback: Connection Event = 15
11-22 09:23:03.800 1096 1265 D BrcmNfcJni: nfaConnectionCallback: NFA_PRESENCE_CHECK_EVT
11-22 09:23:03.800 1096 1265 I BrcmNfcNfa: Presence check failed. Deactivating...
11-22 09:23:03.800 1096 1870 D BrcmNfcJni: nativeNfcTag_doPresenceCheck: tag absent
11-22 09:23:03.800 1096 1265 I BrcmNfcNfa: nfa_dm_rf_deactivate () deactivate_type:0x3
11-22 09:23:03.800 1096 1870 D NativeNfcTag: Tag lost, restarting polling loop
11-22 09:23:03.800 1096 1265 I BrcmNfcNfa: nfa_dm_disc_sm_execute (): state: POLL_ACTIVE (4), event: DEACTIVATE_CMD(6) disc_flags: 0x1
11-22 09:23:03.800 1096 1870 D BrcmNfcJni: nativeNfcTag_doDisconnect: enter
11-22 09:23:03.800 1096 1265 I BrcmNfcNfa: NFC_Deactivate 5 (OPEN) deactivate_type:3
11-22 09:23:03.800 1096 1870 I BrcmNfcNfa: NFA_Deactivate (): sleep_mode:0
11-22 09:23:03.801 1096 1870 E BrcmNfcNfa: GKI_send_event 4
11-22 09:23:03.801 1096 1265 I BrcmNfcNfa: GKI_send_event 4
11-22 09:23:03.801 1096 1265 I BrcmNfcNfa: GKI_send_event 3 4 done
11-22 09:23:03.801 1096 1870 E BrcmNfcNfa: GKI_send_event 3 4 done
11-22 09:23:03.801 1096 1265 I BrcmNfcNfa: nfc_ncif_send_cmd()
11-22 09:23:03.801 1096 1870 D BrcmNfcJni: nativeNfcTag_doDisconnect: exit
11-22 09:23:03.801 1096 1265 I BrcmNfcNfa: nfc_ncif_check_cmd_queue : Writing to HAL...
11-22 09:23:03.801 1096 1870 D NfcService: applyRouting - enter force = false mScreenState = 3

[jimmychan]

what kind of card you read?

do you have check the performance of the antenna?

FYI. https://community.nxp.com/docs/DOC-335545