Hi @Connetsrl,
Correct way to use directives
RV mineirin
#include <WiFi.h>
#define pillo // <<-------- Correct form
void setup()
{
Serial.begin(115200, SERIAL_8N1);
#ifdef pollo // <<-------- Correct form
Serial.println("TEST is pollo");
#else
Serial.println("TEST is not pollo");
#endif
}
void loop()
{
}