BLE HID Selfie¶
1 功能概述¶
此项目演示基于HID服务的自拍服务，用K1和K2模拟的音量键，我们可以在相机模式下可以实现拍照功能。
2 环境要求¶
board:
pan107x evbuart(option): 用来显示串口log（波特率921600，选项
8n1）手机app
nrf connect
4 演示说明¶
在设置蓝牙界面连接
nimble_hid进行配对，通过按键KEY1和KEY2模拟音量增大和减小，同时利用音量增大键和减小键实现拍照快捷键功能。[19:23:23.691] Try to load HW calibration data.. DONE. - Chip Type : 0x80 - Chip CP Version : None - Chip FT Version : 8 - Chip MAC Address : D0000C0CBBF5 - Chip Flash UID : 32313334320EAC834330FFFFFFFFFFFF - Chip Flash Size : 1024 KB LL Spark Controller Version:b0e99c4 [19:23:23.735] ble_store_config_num_our_secs:0 ble_store_config_num_peer_secs:0 ble_store_config_num_cccds:0 registered service 0x1812 with handle=1 registering characteristic 0x2a4a with def_handle=2 val_handle=3 registering characteristic 0x2a4b with def_handle=4 val_handle=5 registering characteristic 0x2a4d with def_handle=6 val_handle=7 registering descriptor 0x2908 with handle=9 registering characteristic 0x2a4d with def_handle=10 val_handle=11 registering descriptor 0x2908 with handle=13 registering characteristic 0x2a4c with def_handle=14 val_handle=15 Device Address: 01 02 03 04 05 06 [19:23:42.214] connection established; status=0 handle=1 our_ota_addr_type=0 our_ota_addr=01 02 03 04 05 06 our_id_addr_type=0 our_id_addr=01 02 03 04 05 06 peer_ota_addr_type=1 peer_ota_addr=1e ee c1 b6 69 57 peer_id_addr_type=1 peer_id_addr=1e ee c1 b6 69 57 conn_itvl=24 conn_latency=0 supervision_timeout=500 encrypted=0 authenticated=0 bonded=0 [19:23:45.043] encryption change event; status=0 handle=1 our_ota_addr_type=0 our_ota_addr=01 02 03 04 05 06 our_id_addr_type=0 our_id_addr=01 02 03 04 05 06 peer_ota_addr_type=1 peer_ota_addr=1e ee c1 b6 69 57 peer_id_addr_type=1 peer_id_addr=1e ee c1 b6 69 57 conn_itvl=24 conn_latency=0 supervision_timeout=500 encrypted=1 authenticated=0 bonded=1 ediv=0 rand=0 authenticated=0 ltk= cddfa0325abc4490ff77622c3075800a irk= 00000000000000000000000000000000 ediv=0 rand=0 authenticated=0 ltk= cddfa0325abc4490ff77622c3075800a irk= 4a3711a0c1b7cd2c92d64048e813fe34 [19:23:45.432] connection updated; status=0 handle=1 our_ota_addr_type=0 our_ota_addr=01 02 03 04 05 06 our_id_addr_type=0 our_id_addr=01 02 03 04 05 06 peer_ota_addr_type=1 peer_ota_addr=1e ee c1 b6 69 57 peer_id_addr_type=0 peer_id_addr=07 49 34 4d af 50 conn_itvl=6 conn_latency=0 supervision_timeout=500 encrypted=1 authenticated=0 bonded=1 [19:23:45.610] connection updated; status=0 handle=1 our_ota_addr_type=0 our_ota_addr=01 02 03 04 05 06 our_id_addr_type=0 our_id_addr=01 02 03 04 05 06 peer_ota_addr_type=1 peer_ota_addr=1e ee c1 b6 69 57 peer_id_addr_type=0 peer_id_addr=07 49 34 4d af 50 conn_itvl=24 conn_latency=0 supervision_timeout=500 encrypted=1 authenticated=0 bonded=1 [19:23:46.352] subscribe event; conn_handle=1 attr_handle=7 reason=1 prevn=0 curn=1 previ=0 curi=0 [19:23:46.412] subscribe event; conn_handle=1 attr_handle=11 reason=1 prevn=0 curn=1 previ=0 curi=0 [19:23:48.997] GPIO ISR in.. P04 occurred (KEY1音量增大) notify_tx event; conn_handle=1 attr_handle=11 status=0 is_indication=0notify_tx event; conn_handle=1 attr_handle=11 status=0 is_indication=0key_vol_up pressed [19:23:49.544] GPIO ISR in.. P04 occurred notify_tx event; conn_handle=1 attr_handle=11 status=0 is_indication=0notify_tx event; conn_handle=1 attr_handle=11 status=0 is_indication=0key_vol_up pressed [19:23:50.843] GPIO ISR in.. P05 occurred (KEY2音量减小) notify_tx event; conn_handle=1 attr_handle=11 status=0 is_indication=0key_vol_down pressed notify_tx event; conn_handle=1 attr_handle=11 status=0 is_indication=0 [19:23:51.443] GPIO ISR in.. P05 occurred notify_tx event; conn_handle=1 attr_handle=11 status=0 is_indication=0key_vol_down pressed notify_tx event; conn_handle=1 attr_handle=11 status=0 is_indication=0
hog相关GATT Service的初始化在gatt_svr.c中：
static const struct ble_gatt_svc_def gatt_svr_svcs[] = { { /* Service: Heart-rate */ .type = BLE_GATT_SVC_TYPE_PRIMARY, .uuid = BLE_UUID16_DECLARE(BT_UUID_HIDS), .characteristics = (struct ble_gatt_chr_def[]) { { /* Characteristic: hids information */ .uuid = BLE_UUID16_DECLARE(BT_UUID_HIDS_INFO), .access_cb = gatt_svr_chr_access_hid, .flags = BLE_GATT_CHR_F_READ, }, { /* Characteristic: hids report map */ .uuid = BLE_UUID16_DECLARE(BT_UUID_HIDS_REPORT_MAP), .access_cb = gatt_svr_chr_access_hid, .flags = BLE_GATT_CHR_F_READ | BLE_GATT_CHR_F_READ_ENC, }, { /* Characteristic: hids inout report */ .uuid = BLE_UUID16_DECLARE(BT_UUID_HIDS_REPORT), .access_cb = gatt_svr_chr_access_hid_input_report, .flags = BLE_GATT_CHR_F_READ | BLE_GATT_CHR_F_NOTIFY, .val_handle = &hid_input_handle, .descriptors = (struct ble_gatt_dsc_def[]) { { .uuid = BLE_UUID16_DECLARE(BT_UUID_HIDS_REPORT_REF), .access_cb = gatt_svr_chr_access_hid_input_report, .att_flags = BLE_ATT_F_READ, }, { 0 }, } }, { /* Characteristic: hids consumer report */ .uuid = BLE_UUID16_DECLARE(BT_UUID_HIDS_REPORT), .access_cb = gatt_svr_chr_access_hid_consumer_report, .flags = BLE_GATT_CHR_F_READ | BLE_GATT_CHR_F_NOTIFY, .val_handle = &hid_consumer_input_handle, .descriptors = (struct ble_gatt_dsc_def[]) { { .uuid = BLE_UUID16_DECLARE(BT_UUID_HIDS_REPORT_REF), .access_cb = gatt_svr_chr_access_hid_consumer_report, .att_flags = BLE_ATT_F_READ, }, { 0 }, } }, { /* Characteristic: Body sensor location */ .uuid = BLE_UUID16_DECLARE(BT_UUID_HIDS_CTRL_POINT), .access_cb = gatt_svr_chr_access_hid, .flags = BLE_GATT_CHR_F_WRITE_NO_RSP, }, { 0, /* No more characteristics in this service */ }, } }, { 0, /* No more services. */ }, };
相关hog硬件初始化和处理以及发送消息的函数在
hog.c中