12/18/2023 0 Comments Saa2nAfter performing steps 1 - 4 or 1 - 6 above, should see serial port listed for the SAA2Nĭesktop (please complete the following information):.Observe "Serial port" list under "Serial port control" section.NanoVNA-saver does not recognize serial port for SAA2N Otherwise, you can update your firmware using Python and the bootload_firmware.py script.Įnsure you have Python version 3, and install pyserial.I originally filed this as a feature request as I originally thought the SAA2N may not be supported, but after discussion from other groups I believe that NanoVNA-saver should support the SAA2N, so I am filing this as a bug. ![]() Restart your NanoVNA as described below and follow the instructions in NanoVNAv2-QT. You can update the firmware using (NanoVNAv2-QT]( ). If you have an intact bootloader already installed in your NanoVNAv2, there are several ways to update the firmware. Updating firmware using the serial bootloader If your device already has a working serial bootloader, you can upload the firmware without needing extra hardware. You can upload the firmware binary to that address using an ST-Link. The NanoVNA V2 firmware is installed at address 0x8004000. Some reports indicate that the NanoVNAv2 cannot be powered via the 3.2v supply from the ST-Link, but should be powered from its own battery. To install the bootloader on a new GD32F303, you will need to use an ST-Link device, of which many inexpensive clones are available. The bootloader should be loaded at address 0x8000000, the start of the GD32F303 flash section. Please do not attempt to use a standard USB DFU tool. ![]() Instead, a serial bootloader program is installed. The GD32F303 processor does not support USB DFU mode like the STM32 chips do. Git checkout - gd32f303cc_with_bootloader_plus4.ld ![]() Git checkout - gd32f303cc_with_bootloader.ld
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