What I can do to make the slave receive the second datapackage using the ESP_NOW?

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engkhaledeisa
Posts: 14
Joined: Mon Feb 26, 2024 10:21 am

What I can do to make the slave receive the second datapackage using the ESP_NOW?

Postby engkhaledeisa » Tue Oct 01, 2024 2:43 pm

I Have an issue that drives me crazy .....I try to operate an agility light project with 4 pieces usin esp8266 ...one master and 3 slaves .... that if your get you hand close to the sensor then interruption will occurs and the ws2812b on the other .....without much details there are 2 data packets the first data packets (packetsettings) is sent sucessfuly but the second datapacket(datapacketalone) didnot sent even the call back function activated in the slave piece (as I serial.print the recieving mac addreess ) but the data sent didnt copied in the address directed to even the data length are the same

I tried using several techniques .....I thought first it a hardware issue I put capacitors ,logic converter,....changed the power source

but then after learning and make logging I found it is software and I donnot know what it is ....I searced alot and tried several solutions like

1.using delay

2.using ack system

3.change wifi mode

4.wifi.setsleep (false)

5.change wifi channel

nothing solved I thought I should change the communication protocol but I found the best one is esp-now

so What I should do if the receiver didnot not receive the second data package even the code is fine

Master Code

[Codebox]

Code: Select all

uint8_t receiverAddress1[] = { 0x40,0x91,0x51,0x4E,0x10,0x31 };
  // /*replaceValueHere*/ uint8_t receiverAddress1[] = { 0xF4, 0xCF, 0xA2, 0x5D, 0x75, 0x28 };    //  this ECU MAC address ,only for example purposes
  /*replaceValueHere*/ uint8_t receiverAddress2[] = {
0xAC,0x0B,0xFB,0xDA,0xE0,0x11};
uint8_t receiverECU_Address[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };  //Placeholder for the receiver address

uint8_t receiverArray[MAXAVAILABLEECU][MACADDRESSSIZE];
 
 
#define MAXAVAILABLEECU 10    

dataPacketSettings packetSettings = { 0 };

struct __attribute__((packed)) dataPacketSettings {
  uint8_t training_NrOfEcus;
  uint8_t training_trainingType;
  uint8_t training_nrOfColors;
  uint8_t training_counterValStop;
  uint16_t training_stopTimeDuration;
  uint8_t training_partnerMode_P1Color;
  uint8_t training_partnerMode_P2Color;
  uint32_t training_maxIntervalTime;
  uint32_t training_minIntervalTime;
  uint8_t winnerPartner;
}; 
 
struct __attribute__((packed)) dataPacketAlone {
  uint8_t LED_Token;  // Token for activating ECUs
  uint8_t counterExerciseData;
};
dataPacketAlone packetAlone = { 1, 0 };

void initReceiverAddress(void) {

  // memcpy(&receiverArray[0], NOECU, 6); //no ECU is allowed to be on 0 position
  // memcpy(&receiverArray[1], receiverAddress1, 6);  //This is my ECU position doesn't need to be filed.
  switch (training_SelectNrOfECUs) {
case 1:
memcpy(&receiverArray[2], receiverAddress2, 6);
esp_now_add_peer(receiverAddress2, RECEIVER_ROLE, WIFI_CHANNEL, NULL, 0);
break;

case 2:
memcpy(&receiverArray[2], receiverAddress2, 6);
memcpy(&receiverArray[3], receiverAddress3, 6);
esp_now_add_peer(receiverAddress2, RECEIVER_ROLE, WIFI_CHANNEL, NULL, 0);
esp_now_add_peer(receiverAddress3, RECEIVER_ROLE, WIFI_CHANNEL, NULL, 0);
break;

case 3:
memcpy(&receiverArray[2], receiverAddress2, 6);
memcpy(&receiverArray[3], receiverAddress3, 6);
memcpy(&receiverArray[4], receiverAddress4, 6);
esp_now_add_peer(receiverAddress2, RECEIVER_ROLE, WIFI_CHANNEL, NULL, 0);
esp_now_add_peer(receiverAddress3, RECEIVER_ROLE, WIFI_CHANNEL, NULL, 0);
esp_now_add_peer(receiverAddress4, RECEIVER_ROLE, WIFI_CHANNEL, NULL, 0);
break;

case 4:
memcpy(&receiverArray[2], receiverAddress2, 6);
memcpy(&receiverArray[3], receiverAddress3, 6);
memcpy(&receiverArray[4], receiverAddress4, 6);
//to add
esp_now_add_peer(receiverAddress2, RECEIVER_ROLE, WIFI_CHANNEL, NULL, 0);
esp_now_add_peer(receiverAddress3, RECEIVER_ROLE, WIFI_CHANNEL, NULL, 0);
esp_now_add_peer(receiverAddress4, RECEIVER_ROLE, WIFI_CHANNEL, NULL, 0);
//to add
break;
  }
  //.......
  //and so on until MAXAVAILABLEECU
}
 
void initESPNOWcomm(void) {
  WiFi.mode(WIFI_STA);
  WiFi.disconnect();  // we do not want to connect to a WiFi network

  if (esp_now_init() != 0) {
Serial.println("ESP-NOW initialization failed");
return;
  }

  Serial.print("ESP Board MAC Address:  ");
  Serial.println(WiFi.macAddress());

  esp_now_set_self_role(MY_ROLE);
  esp_now_register_send_cb(transmissionComplete);  // this function will get called once all data is sent
  esp_now_register_recv_cb(dataReceived);          // this function will get called whenever we receive data

  /*replaceValueHere*/                                                       //add peers here or modify the reciverAddress to the right ECUS
  esp_now_add_peer(receiverAddress1, RECEIVER_ROLE, WIFI_CHANNEL, NULL, 0);  // this is the master and we need to add it before everyone else because the commands come from it.
  memcpy(&receiverArray[1], receiverAddress1, 6);
Serial.println("initESPNOWcomm");
}
 
uint8_t randomECUselect(void) {

  randomSeed(millis());
  uint8_t returnValue = 0;
  uint8_t randomNumber = 0;
  while (returnValue == 0) {
randomNumber = random(0, training_NrOfEcus + 2);  //we have +2 because 1 is master and the function is exclusive

if ((randomNumber != MY_ECU) && (randomNumber != NO_ECU)) {
returnValue = randomNumber;
}
  }
Serial.println("randomECUselect");
delay(500);
  return returnValue;
}
void selectECU_number(uint8_t ECU) {
  memcpy(&receiverECU_Address, receiverArray[ECU], MACADDRESSSIZE);
  packetAlone.LED_Token = ECU;
  TransmisionStatus = SENDDATA_en;
  Serial.print("selectECU_number");
 
delay(500);
}
randomECUSelection = randomECUselect();
 
selectECU_number(randomECUSelection);
 
esp_now_send(receiverECU_Address, (uint8_t *)&packetAlone, sizeof(packetAlone));
[/Codebox]



Slave Code

Code: Select all

[Codebox]uint8_t receiverAddress1[] = { 0x40,0x91,0x51,0x4E,0x10,0x31 };
  // /*replaceValueHere*/ uint8_t receiverAddress1[] = { 0xF4, 0xCF, 0xA2, 0x5D, 0x75, 0x28 };    //  this ECU MAC address ,only for example purposes
  /*replaceValueHere*/ uint8_t receiverAddress2[] = {
0xAC,0x0B,0xFB,0xDA,0xE0,0x11};
uint8_t receiverECU_Address[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };  //Placeholder for the receiver address

uint8_t receiverArray[MAXAVAILABLEECU][MACADDRESSSIZE];
 
 
#define MAXAVAILABLEECU 10    
  struct __attribute__((packed)) dataPacketAlone {
  uint8_t LED_Token;  // Token for activating ECUs
  uint8_t counterExerciseData;
};
dataPacketAlone packetAlone = { 1, 0 };


dataPacketSettings packetSettings = { 0 };

struct __attribute__((packed)) dataPacketSettings {
  uint8_t training_NrOfEcus;
  uint8_t training_trainingType;
  uint8_t training_nrOfColors;
  uint8_t training_counterValStop;
  uint16_t training_stopTimeDuration;
  uint8_t training_partnerMode_P1Color;
  uint8_t training_partnerMode_P2Color;
  uint32_t training_maxIntervalTime;
  uint32_t training_minIntervalTime;
  uint8_t winnerPartner;
};

void initReceiverAddress(void) {

  switch (packetSettings.training_NrOfEcus) {

    case 2:

      memcpy(&receiverArray[1], receiverAddress1, 6);
      esp_now_add_peer(receiverAddress1, RECEIVER_ROLE, WIFI_CHANNEL, NULL, 0);
      break;

    case 3:

      memcpy(&receiverArray[3], receiverAddress3, 6);
      memcpy(&receiverArray[1], receiverAddress1, 6);
      esp_now_add_peer(receiverAddress3, RECEIVER_ROLE, WIFI_CHANNEL, NULL, 0);
      esp_now_add_peer(receiverAddress1, RECEIVER_ROLE, WIFI_CHANNEL, NULL, 0);
      break;

    case 4:

      memcpy(&receiverArray[1], receiverAddress1, 6);

      memcpy(&receiverArray[3], receiverAddress3, 6);
      memcpy(&receiverArray[4], receiverAddress4, 6);
      //to add 5
      esp_now_add_peer(receiverAddress3, RECEIVER_ROLE, WIFI_CHANNEL, NULL, 0);
      esp_now_add_peer(receiverAddress4, RECEIVER_ROLE, WIFI_CHANNEL, NULL, 0);
     esp_now_add_peer(receiverAddress1, RECEIVER_ROLE, WIFI_CHANNEL, NULL, 0);
      //to add 5
      break;
  }
  //and so on until MAXAVAILABLEECU
}






void initESPNOWcomm(void) {
  WiFi.mode(WIFI_STA);
  WiFi.disconnect();  // we do not want to connect to a WiFi network
 
  if (esp_now_init() != 0) {
    Serial.println("ESP-NOW initialization failed");
    return;
  }
 
  Serial.print("ESP Board MAC Address:  ");
  Serial.println(WiFi.macAddress());
 
  esp_now_set_self_role(MY_ROLE);
  esp_now_register_send_cb(transmissionComplete);  // this function will get called once all data is sent
  esp_now_register_recv_cb(dataReceived);          // this function will get called whenever we receive data
 
  /*replaceValueHere*/                                                       //add peers here or modify the reciverAddress to the right ECUS
  esp_now_add_peer(receiverAddress1, RECEIVER_ROLE, WIFI_CHANNEL, NULL, 0);
  esp_now_add_peer(receiverAddress2, RECEIVER_ROLE, WIFI_CHANNEL, NULL, 0);
  esp_now_add_peer(receiverAddress4, RECEIVER_ROLE, WIFI_CHANNEL, NULL, 0); // this is the master and we need to add it before everyone else because the commands come from it.
  memcpy(&receiverArray[1], receiverAddress1, 6);
    memcpy(&receiverArray[2], receiverAddress2, 6);
  memcpy(&receiverArray[4], receiverAddress4, 6);
 
}
 
 
void dataReceived(uint8_t *senderMac, uint8_t *data, uint8_t dataLength) {
  char macStr[18];
  snprintf(macStr, sizeof(macStr), "%02x:%02x:%02x:%02x:%02x:%02x", senderMac[0], senderMac[1], senderMac[2], senderMac[3], senderMac[4], senderMac[5]);
 
  Serial.println();
  Serial.print("Received data from: ");
  Serial.println(macStr);
  switch (dataLength) {
    case 2:
      Serial.println(" case 2 ");
      memcpy(&packetAlone, data, sizeof(packetAlone));
      if(packetSettings.training_trainingType==TRAINING_TIMERMODE && packetAlone.LED_Token==MY_ECU) {
        timer1_write(randomTimerInterval());
      }
      Serial.print(packetAlone.counterExerciseData);
            Serial.print(packetAlone.LED_Token);
      break;
 
    case 3:
      Serial.println("local");
      memcpy(&partnerLocal, data, sizeof(partnerLocal));
 
      break;
 
    case 17:
      Serial.println(" case 8");
      memcpy(&packetSettings, data, sizeof(packetSettings));
      settingsReceivedFlag = false;
      break;
  }
  TransmisionStatus = DATARECEIVED_en;
}[/Codebox]
that is the main code if you want to have alook Ecu1 is the master and Ecu2,3,4 are the slaves

https://github.com/projectswithalex/Rea ... ing-Module
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