BLE固件开发--更新连接参数

来源：互联网发布：es5与javascript 编辑：程序博客网时间：2024/04/30 12:26

低功耗蓝牙里重要的三个连接参数：Connection Interval,Slave Latency,Supervision Timeout.这三个参数决定了BLE的功耗。

更新连接参数的相关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 minConnInterval, uint16 maxConnInterval,                                   uint16 latency, uint16 connTimeout, uint8 handleFailure )

ios app连接时，apple公司有自己的规范，这三个参数的设置必须在其规范内才可生效：

● Interval Max * (Slave Latency + 1) ≤ 2 seconds
● Interval Min ≥ 20 ms
● Interval Min + 20 ms ≤ Interval Max Slave Latency ≤ 4
● connSupervisionTimeout ≤ 6 seconds
● Interval Max * (Slave Latency + 1) * 3 < connSupervisionTimeout

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