72 lines
2.2 KiB
C++
72 lines
2.2 KiB
C++
#include <map>
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#include <BluetoothSerial.h>
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BluetoothSerial SerialBT;
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#define BT_DISCOVER_TIME 10000
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esp_spp_sec_t sec_mask=ESP_SPP_SEC_NONE;
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esp_spp_role_t role=ESP_SPP_ROLE_SLAVE;
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void setup() {
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Serial.begin(115200);
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if(! SerialBT.begin("ESP32test", true) ) {
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Serial.println("========== serialBT failed!");
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abort();
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}
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Serial.println("Starting discoverAsync...");
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BTScanResults* btDeviceList = SerialBT.getScanResults();
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if (SerialBT.discoverAsync([](BTAdvertisedDevice* pDevice) {
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Serial.printf(">>>>>>>>>>>Found a new device asynchronously: %s\n", pDevice->toString().c_str());
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} )
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) {
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delay(BT_DISCOVER_TIME);
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Serial.print("Stopping discoverAsync... ");
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SerialBT.discoverAsyncStop();
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Serial.println("discoverAsync stopped");
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delay(5000);
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if(btDeviceList->getCount() > 0) {
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BTAddress addr;
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int channel=0;
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Serial.println("Found devices:");
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for (int i=0; i < btDeviceList->getCount(); i++) {
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BTAdvertisedDevice *device=btDeviceList->getDevice(i);
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Serial.printf(" ----- %s %s %d\n", device->getAddress().toString().c_str(), device->getName().c_str(), device->getRSSI());
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std::map<int,std::string> channels=SerialBT.getChannels(device->getAddress());
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Serial.printf("scanned for services, found %d\n", channels.size());
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for(auto const &entry : channels) {
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Serial.printf(" channel %d (%s)\n", entry.first, entry.second.c_str());
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}
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if(channels.size() > 0) {
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addr = device->getAddress();
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channel=channels.begin()->first;
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}
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}
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if(addr) {
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Serial.printf("connecting to %s - %d\n", addr.toString().c_str(), channel);
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SerialBT.connect(addr, channel, sec_mask, role);
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}
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} else {
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Serial.println("Didn't find any devices");
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}
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} else {
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Serial.println("Error on discoverAsync f.e. not workin after a \"connect\"");
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}
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}
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void loop() {
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if(! SerialBT.isClosed() && SerialBT.connected()) {
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if(SerialBT.available()) {
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while(SerialBT.available()) {
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int c=SerialBT.read();
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if(c >= 0) {
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Serial.print((char) c);
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}
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}
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Serial.println();
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}
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} else {
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Serial.println("not connected");
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}
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delay(1000);
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} |