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
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)
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
CH_CFG_USE_WAITEXIT (used only is Shell run as thread)
CH_CFG_USE_EVENTS (NanoVNA not use events)
CH_CFG_USE_EVENTS_TIMEOUT (NanoVNA not use events)
Implement stack use check in "threads" command, now free stack space show in table as "stk free" in hex
Check stack usage by sweep, and main threads (seems all ok, but add 64 bytes to sweep)
Replace some const values to defined
Write simple profiling definitions
START_PROFILE
STOP_PROFILE
Use it for detect sys tick amount and output to screen
main.c
Reduce VNA_SHELL_MAX_LENGTH to 48, and made shell_line as static (reduce stack usage)
Remove BaseSequentialStream *chp from command calls (use static shell_stream), it reduce code size and stack usage
Use VNA_SHELL_FUNCTION definition for all commands
Remove chMtxLock(&mutex);chMtxUnlock(&mutex); from commands, and define command flag for use it in calls
Apply default scale from trace_info on trace change
Led blink outside from main sweep cycle (better look, and less noise)
Some size fixes
chprintf.c
Implement small memory stream object, only put function and plot_printf(char *str, int size, const char *fmt, ...)
Use it in all code (little increase speed, and huge decrease size)
Restore USE_EXCEPTIONS_STACKSIZE = 0x180 (possible not need, but not good tested)
plot.c
Made huge screen render profile (add some comments)
Not use cell clipping on draw cell data (use constants increase speed, decrease stack usage (not need put it to stack))
Clip cell if need only on screen flush
Use new plot_printf, remove chsnprintf usage
Apply code style
============================================================================================================
Interesting fact
Usage memset(spi_buffer, DEFAULT_BG_COLOR, (h*CELLWIDTH)*sizeof(uint16_t)); dramatically decrease render speed
possibly it fill buffer by 8 bit data, so slow
Usage
uint32_t *p = (uint32_t *)spi_buffer;
while (count--) {
p[0] = DEFAULT_BG_COLOR|(DEFAULT_BG_COLOR<<16);
p[1] = DEFAULT_BG_COLOR|(DEFAULT_BG_COLOR<<16);
p[2] = DEFAULT_BG_COLOR|(DEFAULT_BG_COLOR<<16);
p[3] = DEFAULT_BG_COLOR|(DEFAULT_BG_COLOR<<16);
p+=4;
}
gives x10 speed perfomance
Draw polar and smit grid very slow (but i don`t know how increase it except use bitmaps, but it need about 5-8k flash size and file prepare)
On long lines render slow down, but clipping use more calculation, and not give good result
Need made stack usage check
erikkaashoek
TT
DiSlord