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
!!!!! Don`t understand why si5351 non stable on band 2 then change from band 3
It fixed if set before sweep one frequency from band 1 (for example 50MHz)
Possibly problem in tlv320aic3204_set_gain, call only si5351_set_frequency_with_offset not work
Little faster call command from shell
Fix interpolation if points < POINTS_COUNT
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
Usage: usage: color {id} {rgb24}
- Grid color: id = -3
- Menu bg color: id = -2
- Selected menu: id = -1
- Trace 1-4: id = 0..3
Color in hex RGB format (but possible any type input, dec, hex, bin. oct)
It allow:
- reduce shell thread stack size
- more compact code
- fix some hardcoded scan command code, allow write better scan version
- run calibrate (not depend from pause sweep flag)
Rewrite uint32_t my_atoui(const char *p), now its allow read:
hex 0xaAbBcC1122
dec 12345678
bin 0b00011100
oct 0o12345678
Add some comments
#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
Little code optimization
Add commented 600kHz I2C bus timings (work, give x1.5 speed, but need change DSP ready timings not by wait_count, need use chVTGetSystemTimeX() its better)
DSP_START(delay)
//================================================
// Place some code thats need execute while delay
//================================================
DSP_WAIT_READY
Fix Band table description
Add power stabilization delay on sweep start
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
