This is the best code I could find (github) for connecting an ESP-01 to a Uno. However all I get are timeouts. I even have the thing on it's own 3.3V voltage supply. I am very frustrated with these ESP01s. So either I'm using wrong code or the modules are all bad because I've tested 2 of my four.
/*
WiFiEsp test: BasicTest
Performs basic connectivity test and checks.
*/
#include "WiFiEsp.h"
// Emulate Serial1 on pins 7/6 if not present
#ifndef HAVE_HWSERIAL1
#include "SoftwareSerial.h"
SoftwareSerial Serial1(14, 15); // RX, TX
#endif
char ssid[] = "JMR"; // your network SSID (name)
char pwd[] = "crystal2965"; // your network password
char pwdErr[] = "xxxx"; // wrong password
void setup()
{
Serial.begin(9600);
Serial1.begin(9600);
WiFi.init(&Serial1);
}
void loop()
{
assertEquals("Firmware version", WiFi.firmwareVersion(), "1.5.2");
assertEquals("Status is (WL_DISCONNECTED)", WiFi.status(), WL_DISCONNECTED);
assertEquals("Connect", WiFi.begin(ssid, pwd), WL_CONNECTED);
assertEquals("Check status (WL_CONNECTED)", WiFi.status(), WL_CONNECTED);
assertEquals("Check SSID", WiFi.SSID(), ssid);
IPAddress ip = WiFi.localIP();
assertNotEquals("Check IP Address", ip[0], 0);
Serial.print("IP Address: ");
Serial.println(ip);
byte mac[6]={0,0,0,0,0,0};
WiFi.macAddress(mac);
Serial.print("MAC: ");
Serial.print(mac[5], HEX);
Serial.print(":");
Serial.print(mac[4], HEX);
Serial.print(":");
Serial.print(mac[3], HEX);
Serial.print(":");
Serial.print(mac[2], HEX);
Serial.print(":");
Serial.print(mac[1], HEX);
Serial.print(":");
Serial.println(mac[0], HEX);
Serial.println();
assertEquals("Disconnect", WiFi.disconnect(), WL_DISCONNECTED);
assertEquals("Check status (WL_DISCONNECTED)", WiFi.status(), WL_DISCONNECTED);
assertEquals("IP Address", WiFi.localIP(), 0);
assertEquals("Check SSID", WiFi.SSID(), "");
assertEquals("Wrong pwd", WiFi.begin(ssid, pwdErr), WL_CONNECT_FAILED);
IPAddress localIp(192, 168, 168, 111);
WiFi.config(localIp);
assertEquals("Connect", WiFi.begin(ssid, pwd), WL_CONNECTED);
assertEquals("Check status (WL_CONNECTED)", WiFi.status(), WL_CONNECTED);
ip = WiFi.localIP();
assertNotEquals("Check IP Address", ip[0], 0);
Serial.println("END OF TESTS");
delay(60000);
}
////////////////////////////////////////////////////////////////////////////////////
void assertNotEquals(const char* test, int actual, int expected)
{
if(actual!=expected)
pass(test);
else
fail(test, actual, expected);
}
void assertEquals(const char* test, int actual, int expected)
{
if(actual==expected)
pass(test);
else
fail(test, actual, expected);
}
void assertEquals(const char* test, char* actual, char* expected)
{
if(strcmp(actual, expected) == 0)
pass(test);
else
fail(test, actual, expected);
}
void pass(const char* test)
{
Serial.print(F("********************************************** "));
Serial.print(test);
Serial.println(" > PASSED");
Serial.println();
}
void fail(const char* test, char* actual, char* expected)
{
Serial.print(F("********************************************** "));
Serial.print(test);
Serial.print(" > FAILED");
Serial.print(" (actual=\"");
Serial.print(actual);
Serial.print("\", expected=\"");
Serial.print(expected);
Serial.println("\")");
Serial.println();
delay(10000);
}
void fail(const char* test, int actual, int expected)
{
Serial.print(F("********************************************** "));
Serial.print(test);
Serial.print(" > FAILED");
Serial.print(" (actual=");
Serial.print(actual);
Serial.print(", expected=");
Serial.print(expected);
Serial.println(")");
Serial.println();
delay(10000);
}
