#include #include #include #define led1 27 #define led2 5 #define sw1 34 #define sw2 4 #define led_status 2 #define pwm1 14 #define pwm2 12 #define WIFI_CHANNEL 11 int status_loop=0; void send_data(void); bool dir; int duty; uint8_t Address_node1[] = {0x00,0x70,0x07,0xa3,0x78,0x78}; uint8_t Address_node2[] = {0x88,0x57,0x21,0xc2,0xc0,0xb4}; uint8_t Address_node3[] = {0x8c,0x94,0xdf,0x61,0xda,0x04}; uint8_t Address_node4[] = {0x88,0x57,0x21,0xb1,0x28,0x2c}; uint8_t Address_node5[] = {0x58,0x2a,0xbd,0x7d,0xbd,0xbc}; // Data structure for receiving and sending. typedef struct struct_message { char text[32]; int pwm_duty; int id; bool in1; bool in2; bool out1; bool out2; } struct_message; struct_message myData; // Information to send struct_message incomingData; // Received information //esp_now_peer_info_t peerInfo; //The function is called when data is sent. void OnDataSent(const uint8_t *mac_addr, esp_now_send_status_t status) { Serial.print("\r\nLatest delivery status: "); Serial.println(status == ESP_NOW_SEND_SUCCESS ? "Sent successfully." : "Send failed."); } // The function is called when data is submitted. void OnDataRecv(const esp_now_recv_info *info, const uint8_t *incomingDataRaw, int len) { const uint8_t *mac = info->src_addr; //------------------------------------- check data incomming ------------- Serial.println("\n=== [Received a new data frame.] ==="); // Displays the sender's MAC address. Serial.printf("from MAC Address: %02X:%02X:%02X:%02X:%02X:%02X\n", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); // Check the frame size (Frame Length Verification) Serial.printf("Size of data received. (Bytes): %d\n", len); Serial.printf("Expected structure dimensions(Bytes): %d\n", sizeof(struct_message)); if (len != sizeof(struct_message)) { Serial.println("❌ [Error] Frame Format Incorrect! The data size does not match the structure"); return; } //----------------------------------------------------------------------- memcpy(&incomingData, incomingDataRaw, sizeof(incomingData)); //-------------------- text data --------------- Serial.print("---I received the information: "); Serial.print(incomingData.text); //--------------- interger data-------------- Serial.print(" |number: "); Serial.print(incomingData.pwm_duty); duty=incomingData.pwm_duty; //-------------bool data------------------- Serial.print(" in1: "); Serial.print(incomingData.in1);dir=incomingData.in1; Serial.print(" in2: "); Serial.print(incomingData.in2); Serial.print(" out1: "); Serial.print(incomingData.out1);digitalWrite(led1, incomingData.out1); Serial.print(" out2: "); Serial.print(incomingData.out2);digitalWrite(led2, incomingData.out2); //--------------- MORTOR DRIVE----------------------- if(dir==1){analogWrite(pwm1, 0);analogWrite(pwm2, duty);} if(dir==0){analogWrite(pwm1, duty);analogWrite(pwm2, 0);} } void setup() { WiFi.mode(WIFI_STA); esp_wifi_set_channel(WIFI_CHANNEL, WIFI_SECOND_CHAN_NONE); pinMode(led1, OUTPUT); pinMode(led2, OUTPUT); pinMode(led_status, OUTPUT); pinMode(sw1, INPUT_PULLUP); pinMode(sw2, INPUT_PULLUP); ledcAttach(pwm1,2000,8); ledcAttach(pwm2,2000,8); analogWrite(pwm1, 0);analogWrite(pwm2, 0); // pwm int a=0; while(a<10) { digitalWrite(led1, !digitalRead(led1));digitalWrite(led2, !digitalRead(led2)); delay(1000);a++; } digitalWrite(led1,LOW);digitalWrite(led2,LOW); Serial.begin(115200); WiFi.mode(WIFI_STA); // Getting Started with ESP-NOW if (esp_now_init() != ESP_OK) { Serial.println("ESP-NOW startup failed."); return; } //----------------------------------------------------------------- //Register receiver 1. esp_now_peer_info_t peerInfo1 = {}; memcpy(peerInfo1.peer_addr, Address_node1, 6); peerInfo1.channel = WIFI_CHANNEL; peerInfo1.encrypt = false; if (esp_now_add_peer(&peerInfo1) != ESP_OK){ Serial.println("Adding a peerInfo1 failed."); return; } //---------------------------------------------------------- //Register receiver 3. esp_now_peer_info_t peerInfo3 = {}; memcpy(peerInfo3.peer_addr, Address_node3, 6); peerInfo3.channel = WIFI_CHANNEL; peerInfo3.encrypt = false; if (esp_now_add_peer(&peerInfo3) != ESP_OK){ Serial.println("Adding a peerInfo3 failed."); return; } //-------------------------------- //Register receiver 4. esp_now_peer_info_t peerInfo4 = {}; memcpy(peerInfo4.peer_addr, Address_node4, 6); peerInfo4.channel = WIFI_CHANNEL; peerInfo4.encrypt = false; if (esp_now_add_peer(&peerInfo4) != ESP_OK){ Serial.println("Adding a peerInfo4 failed."); return; } //------------------------------ //Register receiver 5. esp_now_peer_info_t peerInfo5 = {}; memcpy(peerInfo5.peer_addr, Address_node5, 6); peerInfo5.channel = WIFI_CHANNEL; peerInfo5.encrypt = false; if (esp_now_add_peer(&peerInfo5) != ESP_OK){ Serial.println("Adding a peerInfo5 failed."); return; } //------------------------------------ // Register the Callback function for both incoming and outgoing calls. esp_now_register_send_cb((esp_now_send_cb_t)OnDataSent); esp_now_register_recv_cb((esp_now_recv_cb_t)OnDataRecv); } void loop() {status_loop++; //----------------- test command on------------- if(digitalRead(sw1)==0) { delay(100);if(digitalRead(sw1)==0) { strcpy(myData.text, "Greetings from Board 1."); myData.pwm_duty = 50; myData.out1=1; myData.out2=1; send_data();while(digitalRead(sw1)==0); digitalWrite(led1, myData.out1);digitalWrite(led2, myData.out2); } } //----------------------test command off------ if(digitalRead(sw2)==0) { delay(100);if(digitalRead(sw2)==0) { strcpy(myData.text, "Greetings from Board 1."); myData.pwm_duty = 0; myData.out1=0; myData.out2=0; send_data();while(digitalRead(sw2)==0); digitalWrite(led1, myData.out1);digitalWrite(led2, myData.out2); } } if(status_loop>100000){digitalWrite(led_status, !digitalRead(led_status));status_loop=0;} } void send_data(void) { // Send to everyone (NULL means send to all registered peers) esp_err_t result = esp_now_send(0, (uint8_t *) &myData, sizeof(myData)); if (result != ESP_OK) { Serial.println("An error occurred during data transmission."); } }