Board Not Responding When Upload With Programmmer but Upload Fine

The ESP32 has a few common problems, specially when you are trying to upload new sketches or install the ESP32 add together-on on the Arduino IDE. This guide is defended to the ESP32 when programmed with Arduino IDE. Here, we provide a compilation with some of the near mutual problems with the ESP32 and how to fix them.

Important: brand sure you have the latest Arduino IDE installed. Using a different Arduino IDE version might cause other unexpected problems and errors.

Note: Espressif found some silicon design errors in the ESP32 which might be responsible for some unexplained errors/behavior. The errors are detailed in the following document:

• https://espressif.com/sites/default/files/documentation/eco_and_workarounds_for_bugs_in_esp32_en.pdf

Of particular annotation are 3.1 (relating to ability up and deep slumber wake-up) and 3.4 (relating to not restarting on brownout). The old v0 and v1 chips were used in modules labelled ESP32-WROOM-32. The errors are fixed in modules ESP32-WROOM-32E and whatever other ESP32 designations ending in Eastward.
See https://www.espressif.com/en/products/modules for full details. So, to avoid getting issues with your ESP32, we recommend searching for the ones labeled ESP32-WROOM-32E.

1. How exercise I install the ESP32 add-on for the Arduino IDE?

There'south an add-on for the Arduino IDE that allows you to plan the ESP32 using the Arduino IDE and its programming linguistic communication. Follow one of the next Units to set up your Arduino IDE to work with the ESP32 in your operating organization:

• Windows instructions – ESP32 Board in Arduino IDE
• Mac and Linux instructions – ESP32 Board in Arduino IDE

2. I can't see the ESP32 boards in the Arduino IDE Tools carte (Windows PC)

If you still don't see the boards in the Arduino IDE, make sure you click on the small arrow (highlighted in the figure below) to gyre all the way down through the boards:

If at this moment you tin't find your ESP32 lath name, we recommend repeating the installation process from scratch.

• Windows instructions – ESP32 Board in Arduino IDE
• Mac and Linux instructions – ESP32 Board in Arduino IDE

3. C:\\Users\\ User\\Documents \\Arduino\\ hardware\\ espressif\\ esp32/tools /xtensa-esp32-elf /bin/ xtensa-esp32- elf-g++": file does not exist

After installing the ESP32 improver, if you lot open the Arduino IDE and it fails to compile code to your ESP32 board, nosotros recommend re-running the Arduino IDE ESP32 addition intallation.

Note: Windows PCs oftentimes take multiple Arduino IDE versions installed (portable and local installations). Make sure you are running the Arduino IDE where you installed the ESP32 add-on.

4. A fatal error occurred: "Failed to connect to ESP32: Timed out… Connecting…"

When y'all try to upload a new sketch to your ESP32 and it fails to connect to your board, information technology means that your ESP32 is non in flashing/uploading mode.

Having the right board name and COM por selected, follow these steps:

• Agree-down the "Kicking" button in your ESP32 board

• Press the "Upload" button in the Arduino IDE to upload a new sketch:

• After you come across the  "Connecting…." message in your Arduino IDE, release the finger from the "Boot" button:

• Afterwards that, you should see the "Done uploading" message

That's it. Your ESP32 should have the new sketch running. With those boards/with that setup, afterwards uploading a new sketch, printing the "ENABLE" button to restart the ESP32 and run the new uploaded sketch.

You'll also take to repeat that button sequence every time you want to upload a new sketch. But if you want to solve this event one time for all without the need to printing the BOOT button, follow the suggestions in the next guide:

• [SOLVED] Failed to connect to ESP32: Timed out waiting for packet header

To be honest we're non sure why that happens with the newer boards. We don't accept any ESP32 board with that beliefs. We think there might be something dissimilar with your specific lath or the Arduino IDE fails to ship the right control sequence to put the ESP32 automatically in flashing/uploading mode.

five. Fault compiling WiFiScan sketch

If you try to upload the ESP32 WiFiScan.ino sketch provided in the ESP32 Getting Started guide:

And it fails to compile with a similar error message:

In function 'void setup()': ScanNetworks:52: fault: 'class WiFiClass' has no member named 'firmwareVersion' String fv = WiFi.firmwareVersion();

Information technology looks like your Arduino IDE is compiling the WiFi library for the Arduino board (instead of using the ESP32 WiFi library).

Note: you'll probably never utilize any WiFi shield with your Arduino board, right? If you don't use it, you lot need to remove that folder/those folders from your Arduino IDE (move information technology to your desktop, for example).

The WiFi library is located, in a similar path:

C:\Users\ruisantos\Downloads\arduino-ane.eight.7-windows\arduino-ane.eight.7\libraries\WiFi        

And/or at:

C:\Users\ruisantos\Documents\Arduino\libraries\libraries\WiFi        

Later on removing the entire WiFi library folder from 1 location or both locations, restart your Arduino IDE and attempt to compile the code once more.

If you plug your ESP32 board to your figurer, but y'all can't find the ESP32 Port available in your Arduino IDE (it'southward grayed out):

Information technology might be ane of these ii problems: one. USB drivers missing or two. USB cable without data wires.

1. If you don't see your ESP's COM port bachelor, this oft means you don't have the USB drivers installed. Take a closer expect at the chip next to the voltage regulator on board and bank check its name.

The ESP32 DEVKIT V1 DOIT board uses theCP2102 chip.

Get to Google and search for your item fleck to find the drivers and install them in your operating organisation.

You can download the CP2102 drivers on the Silicon Labs website.

Later on they are installed, restart the Arduino IDE and you should run into the COM port in the Tools carte du jour.

2. If you have the drivers installed, but yous can't see your device, double-check that you lot're using a USB cable with information wires.

USB cables from powerbanks often don't have data wires (they are accuse just). And then, your figurer will never establish a serial communication with your ESP32. Using a a proper USB cable should solve your problem.

seven. Arduino IDE Serial Monitor "doesn't work"

If the ESP32 is only printing weird text or gibberish messages in your Arduino IDE Serial Monitor, brand sure you accept the right COM port selected and set the correct baud rate as shown below. In most examples, we're using 115200 baud charge per unit.

8. Error: "Brownout detector was triggered"

When you open your Arduino IDE Series monitor and the error bulletin "Brownout detector was triggered" is constantly existence printed over and over over again. It ways that at that place'due south some sort of hardware problem.

It'southward often related to one of the following issues:

• Poor quality USB cable;
• USB cable is besides long;
• Lath with some defect (bad solder joints);
• Bad figurer USB port;
• Or non enough ability provided by the figurer USB port.

Solution: try a different shorter USB cable (with information wires), try a unlike estimator USB port or use a USB hub with an external power supply.

9. I can't make the ESP32 improver work with Arduino IDE

If you lot've followed all the troubleshooting tips and the ESP32 add-on doesn't work with the Arduino IDE, we recommend experimenting programming the ESP32 with Atom text editor and PlatformIO IDE. Follow this post: Atom text editor with PlatformIO IDE to program the ESP32.

Wrapping Up

We hope you've found this guide useful. If you come across any other issues, delight post them in comments below and nosotros'll try to help you lot solve your problem.

We accept other tutorials with ESP32 that y'all might similar:

• ESP32 with Multiple DS18B20 Temperature Sensors
• ESP32 Data Logging Temperature to MicroSD Card
• ESP32 with DC Motor and L298N Motor Driver – Command Speed and Direction

We hope you've found this tutorial useful. If you like ESP32 and you want to acquire more, we recommend enrolling inLearn ESP32 with Arduino IDE form.

Thank you for reading.

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Source: https://randomnerdtutorials.com/esp32-troubleshooting-guide/

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