这个赋值如何解释？
在BLE client中有一个赋值，有些看不明白。SERVICE_FUNC_POINTERS_T BatteryServiceFuncStore = {
.serviceUuid = &BatteryServiceUuid,
.isMandatory = NULL,
.serviceInit = &BatteryServiceDataInit,
.checkHandle = &BatteryServiceCheckHandle,
.getHandles = &BatteryServiceGetHandles,
.charDiscovered = &BatteryServiceCharDiscovered,
.descDiscovered = &BatteryServiceCharDescDisc,
.discoveryComplete = &BatteryServiceDiscoveryComplete,
.serviceIndNotifHandler = &BatteryServiceHandlerNotifInd,
.configureServiceNotif= &BatteryServiceConfigNotif,
.writeRequest = NULL,
.writeConfirm = &BatteryServiceWriteConfirm,
.readRequest = &BatteryServiceReadRequest,
.readConfirm = &BatteryServiceReadConfirm,
.configureService = &BatteryServiceConfigure,
.isServiceFound = &BatteryServiceFound,
.resetServiceData = &BatteryServiceResetData
};该数据类型定义如下，是一个结构体，成员都是函数指针：
/* Service callbacks */
typedef struct _SERVICE_FUNC_POINTERS_T
{
/* Returns the service UUID and its type (16-bit or 128-bit) */
void (*serviceUuid)(GATT_UUID_T *type, uint16 *uuid);
/* Returns TRUE if the service is mandatory */
bool (*isMandatory)(void);
/* Initialise service data */
void (*serviceInit)(uint16 dev_num,
GATT_DISC_PRIM_SERV_BY_UUID_IND_T *p_event_data);
/* Returns TRUE if the handle is supported by the service */
bool (*checkHandle)(uint16 dev_num, uint16 handle);
/* Get the start and end handle for the service or characteristic */
bool (*getHandles)(uint16 dev_num,
uint16 *StartHandle,
uint16 *EndHandle,
gatt_profile_hierarchy_t type);
/* Called for each discovered characteristic */
bool (*charDiscovered)(uint16 dev_num,
GATT_CHAR_DECL_INFO_IND_T *p_event_data);
/* Called for each discovered characteristic descriptor. This function must
* only be called after first calling charDiscovered.
*/
void (*descDiscovered)(uint16 dev_num,
GATT_CHAR_DESC_INFO_IND_T *p_event_data);
/* Called when the Discovery Procedure is complete for the current server.
* Returns TRUE if the callback starts a read or write, otherwise FALSE
*/
bool (*discoveryComplete)(uint16 dev_num,
uint16 connect_handle);
/* Configure notifications for a given characteristic by writing to the
* Client Characteristic Configuration Descriptor. Returns TRUE, if
* successful, otherwise FALSE
*/
bool (*configureServiceNotif)(uint16 dev_num,
uint16 type,
uint8 sub_type,
bool enable);
/* Callback for handling indications and notifications */
bool (*serviceIndNotifHandler)(uint16 dev_num,
uint16 handle,
uint16 size,
uint8 *value);
/* Callback to modify the value of a characteristic on the peer device */
bool (*writeRequest)(uint16 dev_num,
uint16 type,
uint8 *data,
uint16 size);
/* Function called after a characteristic value has been successfully
* written
*/
void (*writeConfirm)(uint16 dev_num,
uint16 connect_handle);
/* Callback to read the value of a characteristic on the peer device */
bool (*readRequest)(uint16 dev_num, uint16 type);
/* Function called when a characteristic value has been successfully read */
void (*readConfirm)(uint16 dev_num,
uint16 size,
uint8 *value);
/* Configure the service to request notifications or indications */
bool (*configureService)(uint16 dev_num);
/* Check if the service is present on the specified device */
bool (*isServiceFound)(uint16 dev_num);
/* Reset the service data */
void (*resetServiceData)(uint16 dev_num);
} SERVICE_FUNC_POINTERS_T;结构体赋初值不应该是如下这样吗？
SERVICE_FUNC_POINTERS_T BatteryServiceFuncStore = {
&BatteryServiceUuid,
NULL,
&BatteryServiceDataInit,
&BatteryServiceCheckHandle,
&BatteryServiceGetHandles,
&BatteryServiceCharDiscovered,
&BatteryServiceCharDescDisc,
&BatteryServiceDiscoveryComplete,
&BatteryServiceHandlerNotifInd,
&BatteryServiceConfigNotif,
NULL,
&BatteryServiceWriteConfirm,
&BatteryServiceReadRequest,
&BatteryServiceReadConfirm,
&BatteryServiceConfigure,
&BatteryServiceFound,
&BatteryServiceResetData
};例程中，成员前加一个.然后再=，这种赋值法在C里边没有见过啊，而且放到标准的C编译器里也编译不过。是SDK支持的特殊语法吗？
我最后的那种方法在SDK中也可以编译过，但是必须注意顺序不能乱。
第一个初始化的方法，成员顺序乱了也可以。但是这样赋值还是第一次见。
GCC 專屬語法
請參照 6.27 Designated Initializers 章節
https://gcc.gnu.org/onlinedocs/gcc/Designated-Inits.html
這種語法能避免賦值時意外將順序弄錯, 該語法只能用來初始結構變數用
shenada 发表于 2017-3-13 17:33
GCC 專屬語法
請參照 6.27 Designated Initializers 章節
https://gcc.gnu.org/onlinedocs/gcc/Designate ...
给力！多谢。
在VC里编译不通过，果然在单片机编译器里就可以通过了。
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