arduino-esp32/libraries/BLE/examples/BLE_iBeacon/BLE_iBeacon.ino

105 lines
2.8 KiB
Arduino
Raw Normal View History

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