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Some code size squeezing

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pull/8/head
erikkaashoek 5 years ago
parent 922c682164
commit 28b6712338
6 changed files with 45 additions and 33 deletions
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6
main.c
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@ -476,7 +476,7 @@ calculate:
return value;
}
double
float
my_atof(const char *p)
{
int neg = FALSE;
@ -484,11 +484,11 @@ my_atof(const char *p)
neg = TRUE;
if (*p == '-' || *p == '+')
p++;
double x = my_atoi(p);
float x = my_atoi(p);
while (_isdigit((int)*p))
p++;
if (*p == '.') {
double d = 1.0f;
float d = 1.0f;
p++;
while (_isdigit((int)*p)) {
d /= 10;

33
nanovna.h
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@ -130,7 +130,7 @@ void update_frequencies(void);
void set_sweep_frequency(int type, uint32_t frequency);
uint32_t get_sweep_frequency(int type);
void my_microsecond_delay(int t);
double my_atof(const char *p);
float my_atof(const char *p);
int shell_printf(const char *fmt, ...);
void toggle_sweep(void);
@ -710,7 +710,7 @@ extern uint32_t frequencies[POINTS_COUNT];
extern const float unit_scale_value[];
extern const char * const unit_scale_text[];
#if 1
#if 1 // Still sufficient flash
// Flash save area - flash7 : org = 0x0801B000, len = 20k in *.ld file
// 2k - for config save
// 9 * 2k for setting_t + stored trace
@ -725,20 +725,23 @@ extern const char * const unit_scale_text[];
#define SAVE_PROP_CONFIG_SIZE 0x00000800
// Should include all save slots
#define SAVE_CONFIG_AREA_SIZE (SAVE_CONFIG_SIZE + SAVEAREA_MAX * SAVE_PROP_CONFIG_SIZE)
#else
#define SAVEAREA_MAX 4
// Begin addr 0x0801C000
#define SAVE_CONFIG_AREA_SIZE 0x00004000
// config save area
#define SAVE_CONFIG_ADDR 0x0801C000
// properties_t save area
#define SAVE_PROP_CONFIG_0_ADDR 0x0801C800
#define SAVE_PROP_CONFIG_1_ADDR 0x0801D000
#define SAVE_PROP_CONFIG_2_ADDR 0x0801D800
#define SAVE_PROP_CONFIG_3_ADDR 0x0801E000
#define SAVE_PROP_CONFIG_4_ADDR 0x0801e800
#else // Just in case flash runs out
// Flash save area - flash7 : org = 0x0801D000, len = 12k in *.ld file
// 2k - for config save
// 9 * 2k for setting_t + stored trace
#define SAVEAREA_MAX 5
// STM32 minimum page size for write
#define FLASH_PAGESIZE 0x800
// config save area (flash7 addr)
#define SAVE_CONFIG_ADDR 0x0801D000
#define SAVE_CONFIG_SIZE 0x00000800
// setting_t save area (save area + config size)
#define SAVE_PROP_CONFIG_ADDR (SAVE_CONFIG_ADDR + SAVE_CONFIG_SIZE)
#define SAVE_PROP_CONFIG_SIZE 0x00000800
// Should include all save slots
#define SAVE_CONFIG_AREA_SIZE (SAVE_CONFIG_SIZE + SAVEAREA_MAX * SAVE_PROP_CONFIG_SIZE)
#endif
#if 0
typedef struct properties {
uint32_t magic;

29
plot.c
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@ -466,30 +466,31 @@ draw_on_strut(int v0, int d, int color)
#define SQRT_50 ((float)7.0710678118654)
#define LOG_10_SQRT_50 ((float)0.84948500216800)
#define POW_30_20 ((float) 0.215443469)
#define POW_SQRT 1.5234153789
#define POW_SQRT ((float)1.5234153789)
/*
* calculate log10(abs(gamma))
* calculate log10f(abs(gamma))
*/
float
value(const float v)
{
switch(setting.unit)
{
case U_DBMV:
// return v + 30.0 + 20.0*log10(sqrt(50));
// return v + 30.0 + 20.0*log10f(sqrt(50));
return v + 30.0 + 20.0*LOG_10_SQRT_50; //TODO convert constants to single float number as GCC compiler does runtime calculation
break;
case U_DBUV:
// return v + 90.0 + 20.0*log10(sqrt(50.0)); //TODO convert constants to single float number as GCC compiler does runtime calculation
// return v + 90.0 + 20.0*log10f(sqrt(50.0)); //TODO convert constants to single float number as GCC compiler does runtime calculation
return v + 90.0 + 20.0*LOG_10_SQRT_50;
break;
case U_VOLT:
// return pow(10, (v-30.0)/20.0) * sqrt(50.0);
return pow(10, (v-30.0)/20.0)*SQRT_50;
// return pow(10, (v-30.0)/20.0) * sqrt((float)50.0);
return pow((float)10.0, (v-(float)30.0)/(float)20.0)*SQRT_50; // Do NOT change pow to powf as this will increase the size
// return pow(10, v/20.0) * POW_SQRT; //TODO there is an error in this calculation as the outcome is different from the not optimized version
break;
case U_WATT:
return pow(10, v/10.0)/1000.0;
return pow((float)10.0, v/10.0)/1000.0; // Do NOT change pow to powf as this will increase the size
break;
}
// case U_DBM:
@ -503,19 +504,19 @@ to_dBm(const float v)
switch(setting.unit)
{
case U_DBMV:
// return v - 30.0 - 20.0*log10(sqrt(50));
// return v - 30.0 - 20.0*log10f(sqrt(50));
return v - 30.0 - 20.0*LOG_10_SQRT_50;
break;
case U_DBUV:
// return v - 90.0 - 20.0*log10(sqrt(50.0)); //TODO convert constants to single float number as GCC compiler does runtime calculation
// return v - 90.0 - 20.0*log10f(sqrt(50.0)); //TODO convert constants to single float number as GCC compiler does runtime calculation
return v - 90.0 - 20.0*LOG_10_SQRT_50;
break;
case U_VOLT:
// return log10( v / (sqrt(50.0))) * 20.0 + 30.0 ;
return log10( v / (SQRT_50)) * 20.0 + 30.0 ;
// return log10f( v / (sqrt(50.0))) * 20.0 + 30.0 ;
return log10f( v / (SQRT_50)) * 20.0 + 30.0 ;
break;
case U_WATT:
return log10(v*1000.0)*10.0;
return log10f(v*1000.0)*10.0;
break;
}
// case U_DBM:
@ -846,7 +847,7 @@ trace_get_value_string_delta(int t, char *buf, int len, float array[POINTS_COUNT
extern const char *unit_string[];
static void trace_get_value_string(
void trace_get_value_string(
int t, char *buf, int len,
int i, float coeff[POINTS_COUNT],
int ri, int mtype,
@ -916,7 +917,7 @@ static void trace_get_value_string(
#endif
v = value(coeff[i]);
if (mtype & M_NOISE)
v = v - 10*log10(actual_rbw_x10*100.0);
v = v - 10*log10f(actual_rbw_x10*100.0);
if (v == -INFINITY)
plot_printf(buf, len, "-INF");
else {

4
sa_cmd.c
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@ -14,6 +14,8 @@
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#pragma GCC push_options
#pragma GCC optimize ("Os")
static int VFO = 0;
@ -606,4 +608,6 @@ VNA_SHELL_FUNCTION(cmd_scanraw)
redraw_request = 0; // disable screen update in this mode
}
#pragma GCC pop_options

2
sa_core.c
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@ -22,7 +22,7 @@
#include "stdlib.h"
#pragma GCC push_options
#pragma GCC optimize ("Og")
#pragma GCC optimize ("Os")
//#define __DEBUG_AGC__ If set the AGC value will be shown in the stored trace and FAST_SWEEP rmmode will be disabled

4
ui_sa.c
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@ -16,6 +16,9 @@
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#pragma GCC push_options
#pragma GCC optimize ("Os")
#define FORM_ICON_WIDTH 16
#define FORM_ICON_HEIGHT 16
@ -1998,3 +2001,4 @@ menu_move_top(void)
menu_move_back();
}
#pragma GCC pop_options

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