gfps/附耳配对失败+cause+Numeric+Comparison+Failed_0x050C.md

附耳配对失败 cause Numeric Comparison Failed 0x050C

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原因是gfps_handle_char_additional_passkey 解密 additional passkey 失败了

0008066  12-30#14:08:38.005  199  0598425.808  [BTIFMSG]↗BTIF_MSG_GATT_ATTR_WRITE_REQ_IND(CMD:0x010A) link_id:0x0012 cid:0x0004 p_srv_handle:0x004204C8 attr_index:0x0011 attr_len:0x0010 handle:0x0000 write_offset:0x0000 gap:0x09 data:0x17   0008067  12-30#14:08:38.005  200  0598426.097  [PATCH] patch_hw_aes_operate_imp: error code: 0x0  0008068  12-30#14:08:38.005  201  0598426.132  [APP] !!!gfps_handle_char_additional_passkey: message type error 240  0008069  12-30#14:08:38.005  202  0598426.162  [APP] !**gfps_attr_write_cb: pending, attr_index 17, cause 0xd04  0008070  12-30#14:08:38.005  203  0598426.187  [BTIFMSG]↙BTIF_MSG_GATT_ATTR_WRITE_REQ_CFM(CMD:0x010B) link_id:0x0012 cid:0x0004 p_srv_handle:0x004204C8 cause:0x0D04 attr_index:0x0011

gfps_handle_char_additional_passkey 解密：

怀疑 gfps→aes_key 被改了

//这边有一次异常断线，异常断线之后 我们有reset  aes_key  0004136  12-30#14:08:28.521  142  0588963.226  [APP] app_gfps_le_disconnect_cb: conn_id 0, local_disc_cause 0, disc_cause 0x108  0004137  12-30#14:08:28.521  143  0588963.260  [APP] !!!app_gfps_le_disconnect_cb: plink connid 0, gfps link connid 0, gfps curr conn_id 0  0004138  12-30#14:08:28.521  144  0588963.324  [APP] !**gfps_reset_aeskey_and_pairing_status: aes_key 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

因为Google spec 是说   shall discard aes key and pairing mode if this LE link disconnects，所以优先要请 lowerstack 帮忙查看disc_cause 0x108

目前的workaround 是：不清楚会不会引入新的问题：

[BBPRO3BUG-27030] [BBPRO3][EVB][E Cut][PEGA_HA_v1.0.4_20251106][24110 testbin][GFPS][FastPair][LEA phone]Auto Subsequent Pairing... 测试fail（fail reason：creatbond failed，multiple components） - Jira