For enable use external (LSE) clock generator need un comment in Makefile
#UDEFS+= -DVNA_USE_LSE
By default use internal (LSI) clock generator, but it stop then VNA power off
For enable use external (LSE) clock generator, need install 32.768kHz clock quartz on PC14 and PC15 pins, it allow clock run while power off
For enable use RTC in code uncomment in nanovna.h
#define __USE_RTC__
This enable command 'time'
usage: time [y|m|d|h|min|sec] 0-99
Example set 2020 year run 'time y 20'
Add show current time in version screen
Better use font size constants for all screen size
Add support direct clock for AIC3204 from si5351
Now possible made calibration and not reset old calibration data, just made another calibration (not need reset or disable correction).
Open - Short calibration depend from self, need recalibrate it together.
Load calibration possible made alone
Isoln, Thru also depend from self, need recalibrate it together.
- bandwidth count stored in menu (less error on add new values)
- allow set any bandwidth count from command
- bandwidth command print bandwidth freq on apply
- Not reset sweep on request
- Better menu response
- little DSP optimization
Faster i2c bus (now 600kHz, allow more faster add settings)
Add i2c command (disabled by default)
Little fix stat command
In plot.c prepare for 8bit/pixel mode (test, allow increase cell buffer size by use 4 or 8bit/pixel mode, but not need for now)
main.c little change wait execute shell command in sweep thread
(For faster screen update on marker move, all old area update info invalidate after use draw_all_cells(TRUE) on page switch)
Force redraw all cells after end marker move
#define FREQ_MODE_START_STOP 0x0
#define FREQ_MODE_CENTER_SPAN 0x1
Now sweep mode not defined from frequency0 > frequency1 or frequency0 < frequency1
frequency0 always < frequency1
All freq must get by use get_sweep_frequency(mode)
Revert Select CH0 reflect channel before set freq, add additional delay on 0 sweep point
Start/stop generation feature (unstable on segment scan from CPU)
Calibration on paused sweep (need more stack, need find better solution)
Variable use optimization
Cleanup and optimize code
Add comments, fix definitions
Fix rounding errors
Fix band 1 stability
mcuconf.h
Set I2C bus clock to SYSCLK (more fast)
Apply 400kHz bus I2C clock timings for 8MHz and 48Mhz clock
main.c
Remove and reset some variables
Add separate sweep for calibration (allow calibrate if sweep paused)
Increase main thread stack (need for run calibrate, possibly need execute some commands in sweep threads for reduce stack usage)
Improve sweep speed about 60%
Stop generation on pause sweep
Remove all hack for si5351
Reduce code size
Fix integer overflow on big freq values
Additional
Change I2C
Others:
move marker_tracking variable to ui config
move some definition to correct place
reduce tlv320aic3204 code size
Speedup marker move from lever (BUTTON_REPEAT_TICKS = 625)
Need test stability
