Make Sparkfun's nrf52832 IOT Board an Ibeacon

Like I said, the nrf52832 breakout board can be programmed to become an Ibeacon using the blepheripheral library, in fact it has a sample sketch. But I think the sample sketch is not applicable to what I am trying to achieve so, I decided not to use the sample sketch. The main reason is that it needs an interrupt and a timer just to change the frame from ibeacon to eddystone, so it is not good.

But, using the included ibeacon library as guide, it enabled me to understand how to turn the device into ibeacon. I used Ibeacon Detector app to capture the data packets or advertising packets, and used the captured data to change the blepheripheral manufurerdata and that's it. I just turned it into ibeacon.

Here is the sample ibeacon advertising packet:

This is the manufacturerdata I used:
0x4c, 0x00, 0x02, 0x15, 0xa1, 0x96, 0xc8, 0x76, 0xde, 0x8c, 0x4c, 0x47, 0xab, 0x5a, 0xd7, 0xaf, 0xd5, 0xae, 0x71, 0x27, 0x00, 0x12, 0x00, 0x25, 0xcb, 0x5c

The breakdown is as follows:
0x4c 0x00 = Apple Company
0x02 0x15 = Ibeacon Identifier
0xa1 0x96 0xc8 0x76 0xde 0x8c 0x4c 0x47 0xab 0x5a 0xd7 0xaf 0xd5 0xae 0x71 0x27 =UUID
0x00 0x12 = Major
0x00 0x25 = Minor
0xcb 0x5c = Transmitted Power(-53dBm)

Here is the complete sketch:

#include <SPI.h>

#include <BLEPeripheral.h>

const char * localName  = "LED On"; 

BLEPeripheral blePeriph();

void setup() {

  // put your setup code here, to run once:

Serial.begin(115200);

  blePeriph.setDeviceName(localName);

  blePeriph.setLocalName(localName);

  blePeriph.setTxPower(measuredPower);

  const unsigned char  manufacturerData[26] = {0x4c, 0x00, 0x02, 0x15, 0xa1, 0x96, 0xc8, 0x76, 0xde, 0x8c, 0x4c, 0x47, 0xab, 0x5a, 0xd7, 0xaf, 0xd5, 0xae, 0x71, 0x27, 0x00, 0x12, 0x00, 0x25, 0xcb, 0x5c};

  unsigned int lng         = 26;

  blePeriph.setManufacturerData(manufacturerData, lng);

  blePeriph.begin();

  

}

void loop() {

  // put your main code here, to run repeatedly:

 blePeriph.poll();

}