Discuz! Board

标题: 读LED状态的值 [打印本页]

作者: jacksp 时间: 2017-1-17 13:05
标题: 读LED状态的值
高手你好：我是菜鸟刚刚涉及蓝牙4.0，我想问一下手机上读写LED的时候，写是明白的，使用on_write函数，但主板上读该值的实现是通过哪个函数或命令实现的，这样反馈给手机表示LED已经亮灭状态值

static uint32_t led_char_add(ble_lbs_t * p_lbs, const ble_lbs_init_t * p_lbs_init)
{
ble_gatts_char_md_t char_md;
ble_gatts_attr_t attr_char_value;
ble_uuid_t       ble_uuid;
ble_gatts_attr_md_t attr_md;

memset(&char_md, 0, sizeof(char_md));

char_md.char_props.read = 1;
char_md.char_props.write  = 1;
char_md.p_char_user_desc  = NULL;
char_md.p_char_pf       = NULL;
char_md.p_user_desc_md = NULL;
char_md.p_cccd_md       = NULL;
char_md.p_sccd_md       = NULL;

ble_uuid.type = p_lbs->uuid_type;
ble_uuid.uuid = LBS_UUID_LED_CHAR;

memset(&attr_md, 0, sizeof(attr_md));

BLE_GAP_CONN_SEC_MODE_SET_OPEN(&attr_md.read_perm);
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&attr_md.write_perm);
attr_md.vloc    = BLE_GATTS_VLOC_STACK;
attr_md.rd_auth = 0;
attr_md.wr_auth = 0;
attr_md.vlen    = 0;

memset(&attr_char_value, 0, sizeof(attr_char_value));

attr_char_value.p_uuid    = &ble_uuid;
attr_char_value.p_attr_md = &attr_md;
attr_char_value.init_len    = sizeof(uint8_t);
attr_char_value.init_offs = 0;
attr_char_value.max_len    = sizeof(uint8_t);
attr_char_value.p_value    = NULL;

return sd_ble_gatts_characteristic_add(p_lbs->service_handle,
                                       &char_md,
                                       &attr_char_value,
                                       &p_lbs->led_char_handles);
}

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