问题描述
我试图使用blynk通过互联网控制我的锁,同时,我需要另一种方法来紧急打开它。所以在接收器上,我使用 example>blynk>boards_wifi>esp8266_standalone。对于blynk部分没问题,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任何数据。可以帮忙吗?
这是接收器的代码
#define BLYNK_PRINT 串行
#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();
}
}
都使用wemos d1 mini。 mydata 只是为了查看通信是否正确
解决方法
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