[Solved] USB-UART disappears after flashing micropython
Posted: Wed Jan 30, 2019 3:22 pm
I'm using an ESP8266 4MB lol1n board with a built-in ch340g usb-serial converter. In the bootloader mode, the tty device `/dev/tty.usbserial-141130` is detected by the mac os every time and the flash succeeds. After booting, the micropython wifi AP comes up. But, the tty.usbserial device does not appear in the list of devices under /dev anymore. How can I get access the serial device to appear. Same issue also happens with another board with the CP210x USB to UART Bridge, so dont think its a board issue. I've flashed a sonoff basic with micropython without any issues. How can I get stock micropython to enable the serial device so it shows up on my computer in normal (non-bootloader) mode?