Wantfly
GR551x_SDK_V1.6.10，下述代码中，OTAS_IDX_TX_CHAR、OTAS_IDX_TX_VAL、OTAS_IDX_TX_CFG这3个数据应该是属于同一个OTA_SERVICE_TX_UUID的属性，给otas_att_db赋值时，这3个数据必须按顺序赋值吗？还是可以与其他几个数据OTAS_IDX_SVC、OTAS_IDX_RX_CHAR、OTAS_IDX_RX_VAL交叉乱序赋值？请问有参考文档吗？
static const attm_desc_128_t otas_att_db[OTAS_IDX_NB] = {
// OTA service
[OTAS_IDX_SVC] = {ATT_128_PRIMARY_SERVICE, READ_PERM_UNSEC, 0, 0},
// OTA TX Characteristic Declaration
[OTAS_IDX_TX_CHAR] = {ATT_128_CHARACTERISTIC,READ_PERM_UNSEC, 0, 0},
// OTA TX Characteristic Value
[OTAS_IDX_TX_VAL] = {OTA_SERVICE_TX_UUID,
NOTIFY_PERM_UNSEC,
(ATT_VAL_LOC_USER | ATT_UUID_TYPE_SET(UUID_TYPE_128)),
OTAS_MAX_DATA_LEN},
// OTA TX Characteristic - Client Characteristic Configuration Descriptor
[OTAS_IDX_TX_CFG] = {ATT_128_CLIENT_CHAR_CFG,
READ_PERM_UNSEC| WRITE_REQ_PERM_UNSEC,
0,
0},
// OTA RX Characteristic Declaration
[OTAS_IDX_RX_CHAR] = {ATT_128_CHARACTERISTIC, READ_PERM_UNSEC, 0, 0 },
// OTA RX Characteristic Value
[OTAS_IDX_RX_VAL] = {OTA_SERVICE_RX_UUID,
WRITE_CMD_PERM_UNSEC,
(ATT_VAL_LOC_USER | ATT_UUID_TYPE_SET(UUID_TYPE_128)),
OTAS_MAX_DATA_LEN},
// OTA CTRL Characteristic Declaration
[OTAS_IDX_CTRL_CHAR] = {ATT_128_CHARACTERISTIC, READ_PERM_UNSEC, 0, 0},
// OTA CTRL Characteristic Value
[OTAS_IDX_CTRL_VAL] = {OTA_SERVICE_CTRL_UUID,
WRITE_CMD_PERM_UNSEC,
(ATT_VAL_LOC_USER | ATT_UUID_TYPE_SET(UUID_TYPE_128)),
sizeof(uint32_t)},
};
zhongchengzhi
您好：
1、赋值顺序不影响，因为otas_att_db是数组，赋值的时候指定了索引（如OTAS_IDX_TX_CHAR）后，您无论在哪个位置赋值，其索引不变。不过建议按照索引的位置来赋值，方便代码阅读和维护；
2、关于索引，您可以按照，Service, Char1_char/Char1_VAL/Char1_Cfg, Char2_char/Char2_VAL/Char2_Cfg, IDX_NB的顺序，参考如下：
enum otas_attr_idx_tag
{
// Service
OTAS_IDX_SVC,
// TX Characteristic
OTAS_IDX_TX_CHAR,
OTAS_IDX_TX_VAL,
OTAS_IDX_TX_CFG,
// RX Characteristic
OTAS_IDX_RX_CHAR,
OTAS_IDX_RX_VAL,
// Ctrl Characteristic
OTAS_IDX_CTRL_CHAR,
OTAS_IDX_CTRL_VAL,
OTAS_IDX_NB,
};3、关于自定义服务，您这边可参考： https://docs.goodix.com/zh/online/detail/custom_sample_service_bl/V3.1/fb48e0f3e1872f3c158ed681e170577c
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