https://www.youtube.com/watch?v=Kpqz00_IzTc
https://www.youtube.com/watch?v=Kpqz00_IzTc
In the function ScanForPeer() an array is created to hold a the MAC address of the target ESP32. BSSIDstr is decoded and the values are put into char macAddr[6];
Instead of holding the values of 0x24, 0x0A, 0xC4, 0x10, 0xE8, 0x58 (the MAC for my AP) the macAddr[6] instead holds the characters 24:0A:
I added some print statements in the function in order to show this. The modified function is listed below.
Code: Select all
void ScanForPeer() {
if(*peer.peer_addr != NULL){
return;
}
int8_t scanResults = WiFi.scanNetworks();
if (scanResults > 0) {
for (int i = 0; i < scanResults; ++i) {
String SSID = WiFi.SSID(i);
String BSSIDstr = WiFi.BSSIDstr(i);
vTaskDelay(10);
if (SSID.indexOf("Peer") == 0) {
int mac[6];
if ( 6 == sscanf(BSSIDstr.c_str(), "%x:%x:%x:%x:%x:%x", &mac[0], &mac[1], &mac[2], &mac[3], &mac[4], &mac[5] ) ) {
char macAddr[6];
sprintf(macAddr, "%02X:%02X:%02X:%02X:%02X:%02X",mac[0],mac[1],mac[2],mac[3],mac[4],mac[5]);
Serial.print("macAddr: ");
for(int i = 0; i < 6; i++)
{
Serial.print(macAddr[i]);
}
Serial.println("");
esp_now_peer_info_t temp;
memcpy( &temp.peer_addr, macAddr, 6 );
Serial.println("- - - - - - - - ");
Serial.print(temp.peer_addr[0],HEX);Serial.print(" ");
Serial.print(temp.peer_addr[1],HEX);Serial.print(" ");
Serial.print(temp.peer_addr[2],HEX);Serial.print(" ");
Serial.print(temp.peer_addr[3],HEX);Serial.print(" ");
Serial.print(temp.peer_addr[4],HEX);Serial.print(" ");
Serial.print(temp.peer_addr[5],HEX);
Serial.println("");
String str = (char*)temp.peer_addr;
Serial.print(str); Serial.println(" str");
Serial.println("----------------\n");
if(esp_now_is_peer_exist(temp.peer_addr)){
Serial.println("Existed Peer!");
continue;
}
memcpy(&peer.peer_addr, macAddr, 6 );
peer.channel = CHANNEL;
peer.encrypt = 0;
const esp_now_peer_info_t *peerNode = &peer;
if(esp_now_add_peer(peerNode) != ESP_OK){
Serial.println("Failed to add peer");
continue;
}
updateTopStatus(LV_COLOR_SILVER, "- Connected -");
checkPeerToSendMsg("Hello There~");
}
}
}
}