No LED sync

[Magdenen]

Good afternoon. I have 3 esp8266 modules. I write an example of Blink1588 in them, but I don’t get synchronization with the LED. All modules are connected correctly and are assigned an IP. In Serial I see "PTP status: UNLOCKED Master no, Candidate no". I tried a phone, an ESP module, a router, a laptop as an access point. What could be wrong?

[Joss59]

Hello,
I have the same problem here (2 x eps32-S3). I checked that udp multicast works between the 2 esp32 : test is OK (test code below).
I set the debugger flags in PTP.h. See below. Did I miss something ? Thanks !

Blink1588 output :
WiFi connected
IP address:
192.168.150.60
Joined multicast group 224.0.1.129
PTP status: UNLOCKED Master no, Candidate no
Master : ID 00 00 00 00 00 00 00 00 Prio 255 1-step
Candidate: ID 00 00 00 00 00 00 00 00 Prio 255 1-step

SyncMgr is not receiving packets.
SyncMgr is not receiving packets.
PTP status: UNLOCKED Master no, Candidate no
Master : ID 00 00 00 00 00 00 00 00 Prio 255 1-step
Candidate: ID 00 00 00 00 00 00 00 00 Prio 255 1-step
etc ...

Test code :
#include "WiFi.h"
#include "WiFiUdp.h"

#define SENDER
//#define RECEIVER

const char * ssid = "xxxx";
const char * password = "xxxxxx";

WiFiUDP udp;
IPAddress multicastIP=IPAddress(224,0,1,129);
const uint16_t multicastPort = 12345;

void setup() {
Serial.begin(115200);
WiFi.begin(ssid, password);

while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.println("WiFi connection...");
}

Serial.println("WiFi connected");
#ifdef RECEIVER
// join multicast
if (udp.beginMulticast(multicastIP, multicastPort)) {
Serial.println("Join multicast group");
}
#endif
}

void loop() {
#ifdef SENDER
String message = "Hello from Sender!";
udp.beginPacket(multicastIP, multicastPort);
udp.print(message);
udp.endPacket();

Serial.println("Sent message: " + message);
delay(2000);
#endif

#ifdef RECEIVER
int packetSize = udp.parsePacket();
if (packetSize) {
char incomingPacket[255];
int len = udp.read(incomingPacket, 255);
if (len > 0) {
incomingPacket[len] = 0;
}
Serial.printf("Message received: %s\n", incomingPacket);
}
#endif
}