105 lines
2.8 KiB
Arduino
105 lines
2.8 KiB
Arduino
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/*
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Based on Neil Kolban example for IDF: https://github.com/nkolban/esp32-snippets/blob/master/cpp_utils/tests/BLE%20Tests/SampleScan.cpp
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Ported to Arduino ESP32 by pcbreflux
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*/
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/*
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Create a BLE server that will send periodic iBeacon frames.
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The design of creating the BLE server is:
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1. Create a BLE Server
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2. Create advertising data
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3. Start advertising.
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4. wait
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5. Stop advertising.
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6. deep sleep
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*/
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#include "sys/time.h"
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#include "BLEDevice.h"
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#include "BLEUtils.h"
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#include "BLEBeacon.h"
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#include "esp_sleep.h"
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#define GPIO_DEEP_SLEEP_DURATION 10 // sleep x seconds and then wake up
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RTC_DATA_ATTR static time_t last; // remember last boot in RTC Memory
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RTC_DATA_ATTR static uint32_t bootcount; // remember number of boots in RTC Memory
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#ifdef __cplusplus
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extern "C" {
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#endif
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uint8_t temprature_sens_read();
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//uint8_t g_phyFuns;
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#ifdef __cplusplus
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}
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#endif
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// See the following for generating UUIDs:
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// https://www.uuidgenerator.net/
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BLEAdvertising *pAdvertising;
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struct timeval now;
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#define BEACON_UUID "8ec76ea3-6668-48da-9866-75be8bc86f4d" // UUID 1 128-Bit (may use linux tool uuidgen or random numbers via https://www.uuidgenerator.net/)
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void setBeacon() {
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BLEBeacon oBeacon = BLEBeacon();
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oBeacon.setManufacturerId(0x4C00); // fake Apple 0x004C LSB (ENDIAN_CHANGE_U16!)
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oBeacon.setProximityUUID(BLEUUID(BEACON_UUID));
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oBeacon.setMajor((bootcount & 0xFFFF0000) >> 16);
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oBeacon.setMinor(bootcount&0xFFFF);
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BLEAdvertisementData oAdvertisementData = BLEAdvertisementData();
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BLEAdvertisementData oScanResponseData = BLEAdvertisementData();
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oAdvertisementData.setFlags(0x04); // BR_EDR_NOT_SUPPORTED 0x04
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std::string strServiceData = "";
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strServiceData += (char)26; // Len
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strServiceData += (char)0xFF; // Type
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strServiceData += oBeacon.getData();
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oAdvertisementData.addData(strServiceData);
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pAdvertising->setAdvertisementData(oAdvertisementData);
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pAdvertising->setScanResponseData(oScanResponseData);
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pAdvertising->setAdvertisementType(ADV_TYPE_NONCONN_IND);
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}
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void setup() {
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Serial.begin(115200);
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gettimeofday(&now, NULL);
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Serial.printf("start ESP32 %d\n",bootcount++);
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Serial.printf("deep sleep (%lds since last reset, %lds since last boot)\n",now.tv_sec,now.tv_sec-last);
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last = now.tv_sec;
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// Create the BLE Device
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BLEDevice::init("");
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// Create the BLE Server
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// BLEServer *pServer = BLEDevice::createServer(); // <-- no longer required to instantiate BLEServer, less flash and ram usage
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pAdvertising = BLEDevice::getAdvertising();
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setBeacon();
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// Start advertising
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pAdvertising->start();
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Serial.println("Advertizing started...");
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delay(100);
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pAdvertising->stop();
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Serial.printf("enter deep sleep\n");
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esp_deep_sleep(1000000LL * GPIO_DEEP_SLEEP_DURATION);
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Serial.printf("in deep sleep\n");
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}
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void loop() {
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}
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