Failed to connect to ESP32: No serial data received

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1

Hi, I am new to ESP32 Chips and Arduino. I tried to upload a very basic program to my chip but it is showing an error. I am using a ESP32-WROOM-32E chip and a ESP32-DevKitS-V1.1 board. Under the board manager and other related categories I have tried multiple permutations and combinations but none of them work.

FQBN: esp32:esp32:esp32:UploadSpeed=115200
Using board 'esp32' from platform in folder: 
/Users/itdevelopment/Library/Arduino15/packages/esp32/tools/esp-x32/2302/bin/xtensa-esp32-elf-size -A /Users/itdevelopment/Library/Caches/arduino/sketches/87B45D10C7BA591E1F812A8E25EF57DF/trialesp32wroom.ino.elf
Sketch uses 271565 bytes (20%) of program storage space. Maximum is 1310720 bytes.
Global variables use 20240 bytes (6%) of dynamic memory, leaving 307440 bytes for local variables. Maximum is 327680 bytes.
"/Users/itdevelopment/Library/Arduino15/packages/esp32/tools/esptool_py/4.6/esptool" --chip esp32 --port "/dev/cu.usbserial-24120" --baud 115200  --before default_reset --after hard_reset write_flash  -z --flash_mode keep --flash_freq keep --flash_size keep 0x1000 "/Users/itdevelopment/Library/Caches/arduino/sketches/87B45D10C7BA591E1F812A8E25EF57DF/trialesp32wroom.ino.bootloader.bin" 0x8000 "/Users/itdevelopment/Library/Caches/arduino/sketches/87B45D10C7BA591E1F812A8E25EF57DF/trialesp32wroom.ino.partitions.bin" 0xe000 "/Users/itdevelopment/Library/Arduino15/packages/esp32/hardware/esp32/3.0.7/tools/partitions/boot_app0.bin" 0x10000 "/Users/itdevelopment/Library/Caches/arduino/sketches/87B45D10C7BA591E1F812A8E25EF57DF/trialesp32wroom.ino.bin" 
esptool.py v4.6
Serial port /dev/cu.usbserial-24120
Connecting......................................

A fatal error occurred: Failed to connect to ESP32: No serial data received.
For troubleshooting steps visit: https://docs.espressif.com/projects/esptool/en/latest/troubleshooting.html
Failed uploading: uploading error: exit status 2```



```int LED_BUILTIN = 2;
void setup() {
 pinMode (LED_BUILTIN, OUTPUT);
}
void loop() {
 digitalWrite(LED_BUILTIN, HIGH);
 delay(1000);
 digitalWrite(LED_BUILTIN, LOW);
 delay(1000);
}```
2

Did you try all the troubleshooting steps?

3

Yes, I tried the steps like pressing the boot button, checking the modem,etc. The only thing I haven't tried yet is installing a driver but that is because the driver is currently being installed in the computer. I also tried 2-3 chips and 2 different boards on different computers. Everytime I received the same error message.

4

I've never used that board but it has the CP2102 IUB-UART IC, so the driver should already be installed.
The error indicates a connection problem somewhere. I'm sure you checked all those little spring contacts.

6

Yes, I did check those contacts and I am trying with the driver and it still doesn't work, so maybe I am doing something wrong. But thank you so much for your help!

7

I don't know if you are using a Mac or linux but it may be something with the operating system.
--port "/dev/cu.usbserial-24120"

Can't help there I use Win

8

I am using Mac so I think it might be the OS or just some security firewalls installed on it because I tried it on Windows and worked fine. Thank you for mentioning the OS because changing it did help me.

9

I'm surprised, most people who have connection problems are on Windows.
Glad you got it working!

10

I am working on work computer so there are more restrictions on the mac for external drivers, etc so maybe that's the reason