BLE属性格式权限属性声明

前言：

BLE属性的分类（四大类）：

Primary Service（首要服务项）
Secondary Service（次要服务项）
Include（包含服务项）
Characteristic（特征）

 本次主要对属性权限的使用进行描述：

先看协议

Attribute permissions are a combination of access permissions, encryption permissions, authentication permissions and authorization permissions.

The following access permissions are possible: //访问权限

• Readable //可读

• Writeable //可写

• Readable and writable //可读可写

The following encryption permissions are possible://加密权限

• Encryption required //需要加密

• No encryption required //无需加密

The following authentication permissions are possible://身份认证权限

• Authentication Required //需要身份验证

• No Authentication Required //无需身份验证

The following authorization permissions are possible://授权权限

• Authorization Required  //需要授权

• No Authorization Required //无需授权

CH57X/CH58X/CH59X中关于这部分的声明：

#define GATT_PERMIT_READ 0x01 //!< Attribute is Readable
#define GATT_PERMIT_WRITE 0x02 //!< Attribute is Writable
#define GATT_PERMIT_AUTHEN_READ 0x04 //!< Read requires Authentication
#define GATT_PERMIT_AUTHEN_WRITE 0x08 //!< Write requires Authentication
#define GATT_PERMIT_AUTHOR_READ 0x10 //!< Read requires Authorization
#define GATT_PERMIT_AUTHOR_WRITE 0x20 //!< Write requires Authorization
#define GATT_PERMIT_ENCRYPT_READ 0x40 //!< Read requires Encryption
#define GATT_PERMIT_ENCRYPT_WRITE 0x80 //!< Write requires Encryption

后续补充实际应用；