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From the looks of it, most of their Wi-Fi enabled options look extremely similar to a series of older “3G router” products manufactured by HAME. Some research later, a series of products called Airconsole from Cloudstore Limited perked my interests. While talking to some network engineers, I found that some people had Wi-Fi or BLE based wireless console adapters, which allow them to access the RS-232 serial consoles wirelessly. The UART cable length limit makes it difficult to work with on a messy desk, as a USB hub or at least an extension cable would always be required, further contributing to the clutter, and the bare PCBs have risks of being accidentally shorted out by my other metallic tools if not careful. To make matters worse, should something bad happens to my board and a high voltage was sent to the tx/rx pins, it can potentially go back to my computer and destroy my PCH, since EHCI/XHCI controllers are typically integrated in the PCH nowadays. This makes diagnosing and debugging bootloader related problems very unpleasant.
OPENWRT USB SERIAL FTDI SOFTWARE
Term_exitfunc: reset failed for dev UNKNOWN: Input/output errorīy the time I could reconnect with my terminal software ( picocom in this case), I would have already missed a lot of critical messages printed by the bootloader. Whenever the target board is powered up, there is always a small chance that a power surge will happen due to ground loop interference, which causes my connection to be interrupted on power-up: FATAL: read zero bytes from port I’ve used a lot of USB serial adapters over the years, but they all seem to have two major drawbacks that are difficult to overcome: Serial console is one of the most important ways of communicating with embedded Linux systems.
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