TI中文支持网我的理解是只要SimpleProfile_SetParameter被调用到，simpleProfile_ReadAttrCB会自动执行一次，所以simpleBLEPeripheral例程中每5秒应该进一次SimpleProfile_SetParameter和simpleProfile_ReadAttrCB。
现在我测试是SimpleProfile_SetParameter可以进去，但simpleProfile_ReadAttrCB从来没进去过。请问TI大神，我应该改哪里呢？每个特征值的属性我没变过。急！
请帮忙说一下，万分感谢！
xiao lang：
谁能帮帮忙？simpleProfile_ReadAttrCB进不去，芯片就不能向上位机发数据，卡在这里进行不下去了。
我使用的代码如下：
static void SimpleBLEPeripheral_performPeriodicTask(void){#ifndef FEATURE_OAD uint8_t valueToCopy; // Call to retrieve the value of the third characteristic in the profile if (SimpleProfile_GetParameter(SIMPLEPROFILE_CHAR3, &valueToCopy) == SUCCESS) { // Call to set that value of the fourth characteristic in the profile. // Note that if notifications of the fourth characteristic have been // enabled by a GATT client device, then a notification will be sent // every time this function is called. SimpleProfile_SetParameter(SIMPLEPROFILE_CHAR4, sizeof(uint8_t), &valueToCopy); }
SimpleProfile_SetParameter中的CHAR4：
case SIMPLEPROFILE_CHAR4: if ( len == sizeof ( uint8 ) ) { simpleProfileChar4 = *((uint8*)value); // See if Notification has been enabled GATTServApp_ProcessCharCfg( simpleProfileChar4Config, &simpleProfileChar4, FALSE, simpleProfileAttrTbl, GATT_NUM_ATTRS( simpleProfileAttrTbl ), INVALID_TASK_ID, simpleProfile_ReadAttrCB ); } else { ret = bleInvalidRange; } break;
simpleProfile_ReadAttrCB我就不说怎么写的了。因为根本进不去。求教啊，我哪里写错了。还应该改哪里？
da qin zheng sheng：
没有响应是因为需要和主机进行连接吧？
kqian0327：
你好，
simpleProfile_ReadAttrCB和simpleProfile_WriteAttrCB都是被定义到simpleProfileCBs 函数里面，
/********************************************************************* * PROFILE CALLBACKS */// Simple Profile Service CallbacksCONST gattServiceCBs_t simpleProfileCBs ={ simpleProfile_ReadAttrCB, // Read callback function pointer simpleProfile_WriteAttrCB, // Write callback function pointer NULL // Authorization callback function pointer};
在bStatus_t SimpleProfile_AddService( uint32 services )函数中有注册simpleProfileCBs 函数！
这个是在蓝牙初始化时调用过得函数。
if ( services & SIMPLEPROFILE_SERVICE ) { // Register GATT attribute list and CBs with GATT Server App status = GATTServApp_RegisterService( simpleProfileAttrTbl, GATT_NUM_ATTRS( simpleProfileAttrTbl ), GATT_MAX_ENCRYPT_KEY_SIZE, &simpleProfileCBs ); }
