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Diffstat (limited to 'doc/Connection_Parameter.md')
| -rw-r--r-- | doc/Connection_Parameter.md | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/doc/Connection_Parameter.md b/doc/Connection_Parameter.md new file mode 100644 index 00000000..42082756 --- /dev/null +++ b/doc/Connection_Parameter.md @@ -0,0 +1,42 @@ +# Direct-BT Default Connection Parameter + +## Server + +* BTAdapter::setDefaultConnParam(): + - const uint16_t conn_min_interval = 8; // 10ms + - const uint16_t conn_max_interval = 40; // 50ms + - const uint16_t conn_latency = 0; + - const uint16_t supervision_timeout = 50; // 500ms + - status = adapter->setDefaultConnParam(conn_min_interval, conn_max_interval, conn_latency, supervision_timeout); + +* BTAdapter::startAdvertising() + - static const uint16_t adv_interval_min=160; // x0.625 = 100ms - default is 640 -> 400ms + - static const uint16_t adv_interval_max=480; // x0.625 = 300ms - default is 640 -> 400ms + - static const AD_PDU_Type adv_type=AD_PDU_Type::ADV_IND; + - static const uint8_t adv_chan_map=0x07; + - static const uint8_t filter_policy=0x00; + - eir.setConnInterval(8, 12); // 10ms - 15ms + + +## Client + +* BTAdapter::startDiscovery(): + - static DiscoveryPolicy discoveryPolicy = DiscoveryPolicy::PAUSE_CONNECTED_UNTIL_READY; // default value + - static bool le_scan_active = true; // default value + - static const uint16_t le_scan_interval = 24; // 15ms, default value + - static const uint16_t le_scan_window = 24; // 15ms, default value + - static const uint8_t filter_policy = 0; // default value + - adapter->startDiscovery( discoveryPolicy, le_scan_active, le_scan_interval, le_scan_window, filter_policy ); + + +* BTDevice::connectLE(): + - static const uint16_t le_scan_interval = 24; // 15ms, default value + - static const uint16_t le_scan_window = 24; // 15ms, default value + - uint16_t conn_interval_min = (uint16_t)8; // 10ms + - uint16_t conn_interval_max = (uint16_t)12; // 15ms + - const uint16_t conn_latency = (uint16_t)0; + - const uint16_t supervision_timeout = (uint16_t) getHCIConnSupervisorTimeout(conn_latency, (int) ( conn_interval_max * 1.25 ) /* ms */); + - device->connectLE(le_scan_interval, le_scan_window, conn_interval_min, conn_interval_max, conn_latency, supervision_timeout); + + + |