cc2640官方demo更新連接參數(shù)service-CCservice

2019-11-09 17:46:18

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來源：轉載

供稿：網(wǎng)友

背景

cc2640項目需要添加oad功能，為了降低功耗，默認連接參數(shù)設置的比較大，這將導致oad時間過長，此時需要在oad之前先更新一組較小的連接參數(shù)，提高oad的速度。

更新連接參數(shù)的api

/******************************************************************** * @fn GAPRole_SendUpdateParam * * @brief Update the parameters of an existing connection * * @param minConnInterval - the new min connection interval * @param maxConnInterval - the new max connection interval * @param latency - the new slave latency * @param connTimeout - the new timeout value * @param handleFailure - what to do if the update does not occur. * Method may choose to terminate connection, try again, * or take no action * * @return SUCCESS, bleNotConnected, or bleInvalidRange */bStatus_t GAPRole_SendUpdateParam(uint16_t minConnInterval, uint16_t maxConnInterval, uint16_t latency, uint16_t connTimeout, uint8_t handleFailure)

移植官方ccservice的回調函數(shù)

/********************************************************************* * @fn ccChangeCB * * @brief Callback from Connection Control indicating a value change * * @param paramID - parameter ID of the value that was changed. * * @return none */static void ccChangeCB( uint8 paramID ){ // CCSERVICE_CHAR1: read & notify only // CCSERVICE_CHAR: requested connection parameters if (paramID == CCSERVICE_CHAR2) { uint8_t buf[CCSERVICE_CHAR2_LEN]; // Get new connection parameters CcService_getParameter( CCSERVICE_CHAR2, buf); // Update connection parameters GAPRole_SendUpdateParam( BUILD_UINT16(buf[0],buf[1]), BUILD_UINT16(buf[2],buf[3]), // minConnInterval, maxConnInterval BUILD_UINT16(buf[4],buf[5]), BUILD_UINT16(buf[6],buf[7]), // slaveLatency, timeoutMultiplier GAPROLE_TERMINATE_LINK); } // CCSERVICE_CHAR3: Disconnect request else if (paramID == CCSERVICE_CHAR3) { // Any change in the value will terminate the connection GAPRole_TerminateConnection(); }}