52 lines
1.2 KiB
C++
52 lines
1.2 KiB
C++
#include <ESP8266WiFi.h>
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extern "C" {
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#include <espnow.h>
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}
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// Structure to receive data
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typedef struct struct_message {
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char a[32];
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int b;
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float c;
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bool d;
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} struct_message;
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struct_message myData;
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// Callback function that will be executed when data is received
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void onDataRecv(uint8_t * mac, uint8_t *incomingData, uint8_t len) {
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memcpy(&myData, incomingData, sizeof(myData));
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Serial.print("Bytes received: ");
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Serial.println(len);
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Serial.print("Char: ");
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Serial.println(myData.a);
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Serial.print("Int: ");
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Serial.println(myData.b);
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Serial.print("Float: ");
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Serial.println(myData.c);
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Serial.print("Bool: ");
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Serial.println(myData.d);
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}
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void setup() {
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// Initialize Serial Monitor
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Serial.begin(115200);
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// Set device as a Wi-Fi Station
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WiFi.mode(WIFI_STA);
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WiFi.disconnect();
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// Init ESP-NOW
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if (esp_now_init() != 0) {
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Serial.println("Error initializing ESP-NOW");
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return;
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}
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// Register for a callback function that will be called when data is received
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esp_now_set_self_role(ESP_NOW_ROLE_SLAVE);
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esp_now_register_recv_cb(onDataRecv);
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}
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void loop() {
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// Nothing to do here
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}
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