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esp-nimble-cpp/examples/Bluetooth_5/NimBLE_extended_scan/main/main.cpp

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/**
* NimBLE Extended Scanner Demo:
*
* Demonstrates the Bluetooth 5.x scanning capabilities of the NimBLE library.
*
* Created: on November 28, 2024
* Author: H2zero
*
*/
#include <NimBLEDevice.h>
static uint32_t scanTime = 10 * 1000; // In milliseconds, 0 = scan forever
static NimBLEScan::Phy scanPhy = NimBLEScan::Phy::SCAN_ALL;
// Define a class to handle the callbacks when advertisements are received
class scanCallbacks: public NimBLEScanCallbacks {
void onResult(const NimBLEAdvertisedDevice* advertisedDevice) {
printf("Advertised Device found: %s\n PHY1: %d\n PHY2: %d\n", advertisedDevice->toString().c_str(),
advertisedDevice->getPrimaryPhy(), advertisedDevice->getSecondaryPhy());
}
// Callback to process the results of the completed scan or restart it
void onScanEnd(const NimBLEScanResults& scanResults, int reason) {
printf("Scan Ended, reason: %d; found %d devices\n", reason, scanResults.getCount());
// Try Different PHY's
switch (scanPhy) {
case NimBLEScan::Phy::SCAN_ALL:
printf("Scanning only 1M PHY\n");
scanPhy = NimBLEScan::Phy::SCAN_1M;
break;
case NimBLEScan::Phy::SCAN_1M:
printf("Scanning only CODED PHY\n");
scanPhy = NimBLEScan::Phy::SCAN_CODED;
break;
case NimBLEScan::Phy::SCAN_CODED:
printf("Scanning all PHY's\n");
scanPhy = NimBLEScan::Phy::SCAN_ALL;
break;
}
NimBLEScan* pScan = NimBLEDevice::getScan();
pScan->setPhy(scanPhy);
pScan->start(scanTime);
}
} scanCb;
extern "C" void app_main (void) {
printf("Starting Extended Scanner\n");
// Initialize NimBLE, no device name specified as we are not advertising
NimBLEDevice::init("");
NimBLEScan* pScan = NimBLEDevice::getScan();
// Set the callbacks that the scanner will call on events.
pScan->setScanCallbacks(&scanCb);
// Use active scanning to obtain scan response data from advertisers
pScan->setActiveScan(true);
// Set the initial PHY's to scan on, default is SCAN_ALL
pScan->setPhy(scanPhy);
// Start scanning for scanTime, 0 = forever
pScan->start(scanTime);
printf("Scanning for peripherals\n");
}