I had to change the machine I use for my microcontrollers developments, and I consequently re-installed the Arduino IDE on a machine a Macbook Pro, with MacOSX 10.12.6 Sierra. I Also did the same on a Mac-Mini with MacOSX 10.13.6 High Sierra.
To my surprise, on both of those ” new computers” , the IDE cannot connect to the serial (USB) port when I use an ESP32 board, which was OK on my old computer.
I have checked the connecting cable, tried several I used on the previous computer, and even re-purchased a cable which the mention “charge and sync”. Not a single card with micro-usb, is visible, no matter the cable I use.
No idea of the problem, because, when I use another board, connected via a USB-C (a M5stack esp32-pico), the USB is detected!
I also tried to install Visual Studio Code and Platform IO, with exactly the same result: no micro-usb card can be detected… Several re-installation didn’t improve this!
Thanks for any advise regarding this matter .
Maybe you need to install the CP2102X drivers for your computer to be able to find the ESP32: https://www.silabs.com/developers/usb-to-uart-bridge-vcp-drivers
Let me know if this solves the issue.
Sorry about the late reply. Your answer resolved the problem ans everything is now functional on this Mac!>>
Many thanks for this and for the very precious informations you provide!