Thank you for the info, hugen.
If there is no 8MHz xtal - I assume I will see the "Unknown USB device on port xx" error?
Since I can push S/W to the unit using my ST-Link,? do you know the location of any of Ken's development binaries where he was able to get the F303 working with the 2.8" LCD? At least I can check that the Nano starts-up OK with that.
Thanks!
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On Thursday, June 4, 2020, 10:08:25 a.m. EDT, Hugen <hugen@...> wrote:
Hello Larry, STM32F303 comes with a bootloader, but you must connect an external 8M crystal to use DFU mode. This is why the independent 8M crystal is used on the nanoVNA-H4 instead of the 8MHz clock from the si5351. Therefore, if there is no external 8M crystal, you must use the SWD interface or UART interface to install the firmware.
hugen
