Hi, I’m trying to connect an ESP32 (Wroom 32 module) to wifi but cannot get it to connect. It just stays in the while connection loop forever with code 255 (no wifi shield found). I tried another board. Same issue. Can anyone help?
My build output:
Processing esp32dev (platform: espressif32; board: esp32dev; framework: arduino)
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Verbose mode can be enabled via `-v, --verbose` option
CONFIGURATION: https://docs.platformio.org/page/boards/espressif32/esp32dev.html
PLATFORM: Espressif 32 (3.2.0) > Espressif ESP32 Dev Module
HARDWARE: ESP32 240MHz, 320KB RAM, 4MB Flash
DEBUG: Current (esp-prog) External (esp-prog, iot-bus-jtag, jlink, minimodule, olimex-arm-usb-ocd, olimex-arm-usb-ocd-h, olimex-arm-usb-tiny-h, olimex-jtag-tiny, tumpa)
PACKAGES:
- framework-arduinoespressif32 3.10006.210326 (1.0.6)
- tool-esptoolpy 1.30000.201119 (3.0.0)
- toolchain-xtensa32 2.50200.80 (5.2.0)
LDF: Library Dependency Finder -> http://bit.ly/configure-pio-ldf
LDF Modes: Finder ~ chain, Compatibility ~ soft
Found 29 compatible libraries
Scanning dependencies...
Dependency Graph
|-- <WiFi> 1.2.7
| |-- <SPI> 1.0
Building in release mode
Retrieving maximum program size .pio\build\esp32dev\firmware.elf
Checking size .pio\build\esp32dev\firmware.elf
Advanced Memory Usage is available via "PlatformIO Home > Project Inspect"
RAM: [ ] 4.2% (used 13640 bytes from 327680 bytes)
Flash: [== ] 16.4% (used 215434 bytes from 1310720 bytes)
platformio.ini
[env:esp32dev]
platform = espressif32
board = esp32dev
framework = arduino
monitor_speed = 115200
upload_speed = 115200
the code:
#include <Arduino.h>
#include <Wifi.h>
//////////////Spray settings///////////
//set the pin for the spray relay
int spray_relay = 32;
//set the spray timer intervals
const unsigned long sprayOnInt = 2000; //80000
const unsigned long sprayOffInt = 4000; //480000
//store the next spray toggleTme
unsigned long sprayToggleTime;
////////////Light Controller settings////
// Wifi: SSID and password
char WIFI_SSID[] = "blah";
char WIFI_PASSWORD[] = "blah";
int status = WL_IDLE_STATUS;
void setup()
{
//init serial
Serial.begin(115200);
//Spray setup - should switch on initially so PIN should be LOW and set toggle for Spray on interval
pinMode(spray_relay, OUTPUT); //set pin mode
digitalWrite(spray_relay,LOW); //switch on the spray
sprayToggleTime = (millis() + sprayOnInt); // set the initial toggle time
//Light Controller Setup
// init the WiFi connection
while (status != WL_CONNECTED) {
Serial.print("Attempting to connect to WPA SSID: ");
Serial.println(WIFI_SSID);
// Connect to WPA/WPA2 network:
status = WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
// wait 10 seconds for connection:
delay(10000);
Serial.println(WiFi.status());
}
// you're connected now, so print out the data:
Serial.println("");
Serial.println("INFO: WiFi connected");
Serial.print("INFO: IP address: ");
Serial.println(WiFi.localIP());
}
Any suggestions would be very, very welcome!!! Thanks!
Tony