ESP32 Dev board issue

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theredd636
 
Posts: 1
Joined: Tue Jan 24, 2023 12:39 pm

ESP32 Dev board issue

Post by theredd636 »

I purchased an Espressif ESP32 Development Board - Developer Edition on Monday 1/16 and whenever I try to upload a simple WiFi scan sketch to the esp32 the output generates an error code. I ensured that everything was running on the same baud rate. I have tired using different combinations of pressing the boot and enable button but nothing seems to fix this. I have also tried updating the USB to serial com drivers but nothing seems to work. I looked on the espressif website for the error and all that I could find was "Esptool didn’t receive any byte of data or a successful slip packet. This error usually implies some kind of a hardware issue. This may be because the hardware is not working properly at all, the RX/TX serial lines are not connected, or because there is some problem with resetting into the download mode."

Code: Select all

/*
 *  This sketch demonstrates how to scan WiFi networks.
 *  The API is based on the Arduino WiFi Shield library, but has significant changes as newer WiFi functions are supported.
 *  E.g. the return value of `encryptionType()` different because more modern encryption is supported.
 */
#include "WiFi.h"

void setup()
{
    Serial.begin(115200);

    // Set WiFi to station mode and disconnect from an AP if it was previously connected.
    WiFi.mode(WIFI_STA);
    WiFi.disconnect();
    delay(100);

    Serial.println("Setup done");
}

void loop()
{
    Serial.println("Scan start");

    // WiFi.scanNetworks will return the number of networks found.
    int n = WiFi.scanNetworks();
    Serial.println("Scan done");
    if (n == 0) {
        Serial.println("no networks found");
    } else {
        Serial.print(n);
        Serial.println(" networks found");
        Serial.println("Nr | SSID                             | RSSI | CH | Encryption");
        for (int i = 0; i < n; ++i) {
            // Print SSID and RSSI for each network found
            Serial.printf("%2d",i + 1);
            Serial.print(" | ");
            Serial.printf("%-32.32s", WiFi.SSID(i).c_str());
            Serial.print(" | ");
            Serial.printf("%4d", WiFi.RSSI(i));
            Serial.print(" | ");
            Serial.printf("%2d", WiFi.channel(i));
            Serial.print(" | ");
            switch (WiFi.encryptionType(i))
            {
            case WIFI_AUTH_OPEN:
                Serial.print("open");
                break;
            case WIFI_AUTH_WEP:
                Serial.print("WEP");
                break;
            case WIFI_AUTH_WPA_PSK:
                Serial.print("WPA");
                break;
            case WIFI_AUTH_WPA2_PSK:
                Serial.print("WPA2");
                break;
            case WIFI_AUTH_WPA_WPA2_PSK:
                Serial.print("WPA+WPA2");
                break;
            case WIFI_AUTH_WPA2_ENTERPRISE:
                Serial.print("WPA2-EAP");
                break;
            case WIFI_AUTH_WPA3_PSK:
                Serial.print("WPA3");
                break;
            case WIFI_AUTH_WPA2_WPA3_PSK:
                Serial.print("WPA2+WPA3");
                break;
            case WIFI_AUTH_WAPI_PSK:
                Serial.print("WAPI");
                break;
            default:
                Serial.print("unknown");
            }
            Serial.println();
            delay(10);
        }
    }
    Serial.println("");

    // Delete the scan result to free memory for code below.
    WiFi.scanDelete();

    // Wait a bit before scanning again.
    delay(5000);
}
Attachments
error.jpg
error.jpg (56.59 KiB) Viewed 21 times
esp32 bottom.jpg
esp32 bottom.jpg (555.61 KiB) Viewed 21 times
esp32 top.jpg
esp32 top.jpg (511.53 KiB) Viewed 21 times

User avatar
mikeysklar
 
Posts: 9530
Joined: Mon Aug 01, 2016 8:10 pm

Re: ESP32 Dev board issue

Post by mikeysklar »


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