On Mon, Mar 30, 2020 at 07:39 AM, Jos Stevens wrote:
...works normally under NanoVNASaver. ?
... The extra bandwith settings seem to work when standalone
... I see that the smaller the bandwith, the slower the display updates.
... The DFU option does not work on the H4.
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DiSlord,
I'm adding the following comments to Jos' reply:
1. The beta firmware is also working fine with all the current software applications I am using. The only thing that isn't working, that was working before, is a script for capturing the NanoVNA-H4 display using the "capture" console command. The following worked previously:
image_data = ser.read(320 * 480 * 2)
rgb_data = struct.unpack(">153600H", image_data)
After updating to the beta firmware, a "struct.error" is always thrown at the second line. All other console commands seem to work.
2. The DISPLAY-BANDWIDTH menu option is a nice addition to the NanoVNA-H4. My expectation was that decreasing the bandwidth would decrease the noise floor, but what actually happens is that the trace is smoothed. It would probably be more accurate to call the menu AVERAGE or VIDEO AVG. As would be expected, the lower the bandwidth setting (higher number of averages applied) the slower the sweep.
3. As Jos noted, the NanoVNA-H4 cannot enter DFU mode from a firmware menu option and you can delete CONFIG-DFU from your code.
4. The bigger font sizes really improve readability of the display. This is especially true of the menu fonts. The menu fonts are now more legible on the 4" NanoVNA-H4 display than they are on my 4.3" NanoVNA-F display, which has an 800x400 resolution.
5. The improved UI features from the 0.7.1 firmware release make navigating the display better. The display markers are easier to grab, and tapping a marker to change trace selection is easier.
6. I noticed vbat_offset, color and bandwidth console commands have been added in this beta release.
Really a nice piece of coding. Its hard to believe you didn't even have a NanoVNA-H4 to work with while writing the beta firmware. I hope hugen decides to merge most or all of the changes into his next official release. Please let me know if you have an idea of what has changed with the "capture" command.
- Herb
At whis version added all my additional Bandwidth improvements, speed
optimizations + bigger font from my old fixes to AA version
