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我试图使用 blynk 控制我的互联网锁，同时，我需要另一种方法来紧急打开它。所以在接收器，我使用示例>blynk>boards_wifi>esp8266_standalone。对于 blynk 部分是好的，可以从 android 控制，但 ESP NOW 的部分似乎不起作用。发件人说，投递成功，但收件人根本没有收到数据。可以帮忙？

这是接收器的代码

#define BLYNK_PRINT 序列号

#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
#include <espnow.h>

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = " ";

// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = " ";
char pass[] = " ";


// Structure example to receive data
// Must match the sender structure
typedef struct struct_message {
  char a[32];
  int b;
  float c;
  String d;
  bool e;
} struct_message;

// Create a struct_message called myData
struct_message myData;

// Callback function that will be executed when data is received
void OnDataRecv(uint8_t * mac, uint8_t *incomingData, uint8_t len) {
  memcpy(&myData, incomingData, sizeof(myData));
  Serial.print("Bytes received: ");
  Serial.println(len);
  Serial.print("Char: ");
  Serial.println(myData.a);
  Serial.print("Int: ");
  Serial.println(myData.b);
  Serial.print("Float: ");
  Serial.println(myData.c);
  Serial.print("String: ");
  Serial.println(myData.d);
  Serial.print("Bool: ");
  Serial.println(myData.e);
  Serial.println();
}

void setup()
{
  // Debug console
  Serial.begin(115200);
  Serial.println();
  Serial.print("ESP8266 Board MAC Address:  ");
  Serial.println(WiFi.macAddress());
  WiFi.mode(WIFI_AP_STA);

  Blynk.begin(auth, ssid, pass);

  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Setting as a Wi-Fi Station..");
  }
  Serial.print("Station IP Address: ");
  Serial.println(WiFi.localIP());
  Serial.print("Wi-Fi Channel: ");
  Serial.println(WiFi.channel());

  // Init ESP-NOW
  if (esp_now_init() != 0) {
    Serial.println("Error initializing ESP-NOW");
    return;
  }
  // Once ESPNow is successfully Init, we will register for recv CB to
  // get recv packer info
  esp_now_set_self_role(ESP_NOW_ROLE_SLAVE);
  esp_now_register_recv_cb(OnDataRecv);

}
void loop()
{
  Blynk.run();
}

对于发件人

#include <ESP8266WiFi.h>
#include <espnow.h>

// REPLACE WITH RECEIVER MAC Address
uint8_t broadcastAddress[] = {0x84, 0xCC, 0xA8, 0xA9, 0x70, 0xAB};

// Structure example to send data
// Must match the receiver structure
typedef struct struct_message {
  char a[32];
  int b;
  float c;
  String d;
  bool e;
} struct_message;

// Create a struct_message called myData
struct_message myData;

unsigned long lastTime = 0;  
unsigned long timerDelay = 2000;  // send readings timer

// Callback when data is sent
void OnDataSent(uint8_t *mac_addr, uint8_t sendStatus) {
  Serial.print("Last Packet Send Status: ");
  if (sendStatus == 0){
    Serial.println("Delivery success");
  }
  else{
    Serial.println("Delivery fail");
  }
}
 
void setup() {
  // Init Serial Monitor
  Serial.begin(115200);
 
  // Set device as a Wi-Fi Station
  WiFi.mode(WIFI_STA);

  // Init ESP-NOW
  if (esp_now_init() != 0) {
    Serial.println("Error initializing ESP-NOW");
    return;
  }

  // Once ESPNow is successfully Init, we will register for Send CB to
  // get the status of Trasnmitted packet
  esp_now_set_self_role(ESP_NOW_ROLE_CONTROLLER);
  esp_now_register_send_cb(OnDataSent);
  
  // Register peer
  esp_now_add_peer(broadcastAddress, ESP_NOW_ROLE_SLAVE, 1, NULL, 0);
}
 
void loop() {
  if ((millis() - lastTime) > timerDelay) {
    // Set values to send
    strcpy(myData.a, "THIS IS A CHAR");
    myData.b = random(1,20);
    myData.c = 1.2;
    myData.d = "Hello";
    myData.e = false;

    // Send message via ESP-NOW
    esp_now_send(broadcastAddress, (uint8_t *) &myData, sizeof(myData));

    lastTime = millis();
  }
}

两者都使用 wemos d1 mini。mydata 只是为了查看通信是否正确完成

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