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/* Includes ------------------------------------------------------------------*/
#include "stm32f3xx_hal.h"
/* USER CODE BEGIN Includes */
#include "led_driver.h"
#include "globals.h"
#include <string.h>
#include <math.h>
#include <stdlib.h>
/* USER CODE END Includes */
inline uint32_t getRawOffset(uint32_t column,uint32_t line)
{
return 3*(column+line*NB_COLUMNS);
}
__attribute__((section("ccmram")))
float mysin[360];
float mycos[360];
void generateSinCosTable(void)
{
int i;
for (i=0;i<360;i++)
{
mysin[i] = sin(1.0f*i*M_PI/180);
mycos[i] = cos(1.0f*i*M_PI/180);
}
}
__attribute__((section("ccmram")))
float myfsin(float x)
{
int i;
x = x*180.0f/M_PI;
i = fmod(x,360);
if (i>=360)
crash(CC_CODE_SINCOS);
if (i<0)
{
i+=360;
}
if (i<0)
crash(CC_CODE_SINCOS);
return mysin[i];
}
__attribute__((section("ccmram")))
float myfcos(float x)
{
int i;
x = x*180.0f/M_PI;
i = fmod(x,360);
if (i>=360)
crash(CC_CODE_SINCOS);
if (i<0)
{
i+=360;
}
if (i<0)
crash(CC_CODE_SINCOS);
return mycos[i];
}
/*
float myfsin(float x)
{
return sin(x);
}
float myfcos(float x)
{
return cos(x);
}
*/
__attribute__((section("ccmram")))
uint8_t generatePlasma(uint8_t *raw,float u_time, uint8_t plasma_type, uint8_t intensity)
{
uint32_t raw_offset;
uint32_t line, column;
float u_k[2];
float v_coords[2];
float v;
float c[2];
static uint8_t firstCall = 1;
uint8_t x;
uint8_t s1,s2,s4,c1;
if (firstCall)
{
generateSinCosTable();
firstCall = 0;
}
u_time = u_time/10;
u_k[0] = u_k[1] = 4;
for (line=0;line<NB_LINES;line++)
{
v_coords[1] = 1.0f*line/NB_LINES;
for (column=0;column<NB_COLUMNS;column++)
{
v_coords[0] = 1.0f*column/NB_COLUMNS;
raw_offset = getRawOffset(column, line);
c[0] = u_k[0]*(v_coords[0] - 0.5f);
c[1] = u_k[1]*(v_coords[1] - 0.5f);
v = myfsin( c[0]+u_time);
v += myfsin((c[1]+u_time)*0.5f);
v += myfsin((c[0]+c[1]+u_time)*0.5f);
c[0] += u_k[0]*0.5f * myfsin(u_time*0.33333f);
c[1] += u_k[1]*0.5f * myfcos(u_time*0.5f);
v += myfsin(sqrt(c[0]*c[0]+c[1]*c[1]+1.0f)+u_time);
v = v*0.5f;
switch(plasma_type)
{
// type RGB
case 1:
case 11:
case 6:
case 4:
case 19:
case 20:
s1 = 127.5f*myfsin(M_PI*v)+127.5f;
s2 = 127.5f*myfsin(M_PI*v+2.0f/3.0f*M_PI)+127.5f;
s4 = 127.5f*myfsin(M_PI*v+4.0f/3.0f*M_PI)+127.5f;
break;
// type 2 couleurs pures
case 2:
case 16:
case 18:
// type 2 couleurs white
case 3:
case 12:
case 17:
case 14:
s1 = 127.5f*myfsin(M_PI*v)+127.5f;
c1 = 127.5f*myfcos(M_PI*v)+127.5f;
break;
case 13:
case 15:
c[0] = 0.5f+0.5f*myfsin(M_PI*v+4.0f/3.0f*M_PI);
break;
// 5
default :
break;
}
switch(plasma_type)
{
// RGB Type
case 1:
case 6:
case 11:
// RGB Type
raw[raw_offset++] = (s1*intensity)>>8;
raw[raw_offset++] = (s2*intensity)>>8;
raw[raw_offset++] = (s4*intensity)>>8;
break;
case 19:
// RGB Type 2
raw[raw_offset++] = (s2*intensity)>>8;
raw[raw_offset++] = (s1*intensity)>>8;
raw[raw_offset++] = (s4*intensity)>>8;
break;
case 20:
// RGB Type 3
raw[raw_offset++] = (s4*intensity)>>8;
raw[raw_offset++] = (s2*intensity)>>8;
raw[raw_offset++] = (s1*intensity)>>8;
break;
// Yellow
case 4:
// White Yellow Type
raw[raw_offset++] = intensity; //(0.5f+0.5f*myfsin(M_PI*v))*255;
raw[raw_offset++] = intensity; //(0.5f+0.5f*myfsin(M_PI*v+2.0f/3.0f*M_PI))*255;
raw[raw_offset++] = (s4*intensity)>>8;
break;
// 2 Couleurs pures
case 2:
// RED GREEN TYPE
raw[raw_offset++] = (s1*intensity)>>8;
raw[raw_offset++] = (c1*intensity)>>8;
raw[raw_offset++] = 0;
break;
case 16:
// VERT / BLEU
raw[raw_offset++] = 0;
raw[raw_offset++] = (c1*intensity)>>8;
raw[raw_offset++] = (s1*intensity)>>8;
break;
case 18:
// ROUGE / BLEU
raw[raw_offset++] = (s1*intensity)>>8;
raw[raw_offset++] = 0;
raw[raw_offset++] = (c1*intensity)>>8;
break;
// Mix White
case 3:
// YELLOW/MAGENTA/PINK/WHITE TYPE
raw[raw_offset++] = intensity;
raw[raw_offset++] = (c1*intensity)>>8;
raw[raw_offset++] = (s1*intensity)>>8;
break;
case 12:
// CYAN/YELLOW/WHITE TYPE
raw[raw_offset++] = (s1*intensity)>>8;
raw[raw_offset++] = intensity;
raw[raw_offset++] = (c1*intensity)>>8;
break;
case 17:
// MAGENTA/CYAN/WHITE
raw[raw_offset++] = (s1*intensity)>>8;
raw[raw_offset++] = (c1*intensity)>>8;
raw[raw_offset++] = intensity;
break;
//
case 14:
// MAGENTA TYPE
raw[raw_offset++] = intensity;
raw[raw_offset++] = (s1*intensity)>>8;
raw[raw_offset++] = intensity;
break;
case 5:
// BLACK AND WHITE
x = 127.5f*myfsin(M_PI*4.0f*v)+127.5f;
raw[raw_offset++] = (x*intensity)>>8;
raw[raw_offset++] = (x*intensity)>>8;
raw[raw_offset++] = (x*intensity)>>8;
break;
case 13:
// CYAN TYPE
raw[raw_offset++] = (c[0]*c[0])*intensity;
raw[raw_offset++] = intensity;
raw[raw_offset++] = intensity;
break;
case 15:
// MAGENTA TYPE DEEP
raw[raw_offset++] = intensity;
raw[raw_offset++] = (c[0]*c[0])*intensity;
raw[raw_offset++] = intensity;
break;
default :
raw[raw_offset++] = (0x80*intensity)>>8;
raw[raw_offset++] = (0x80*intensity)>>8;
raw[raw_offset++] = (0x80*intensity)>>8;
break;
}
}
}
return 1;
}
uint8_t generateUniformColor(uint8_t *raw,uint8_t *color)
{
uint32_t p=0;
while (p<NB_PIXELS)
{
*raw++=color[0];
*raw++=color[1];
*raw++=color[2];
p++;
}
return 0;
}
uint8_t generateBlack(uint8_t *raw)
{
memset(raw,0,RAW_SIZE);
return 0;
}
uint8_t generateWhite(uint8_t *raw, uint8_t intensity)
{
memset(raw,intensity,RAW_SIZE);
return 0;
}
uint8_t generateYellow(uint8_t *raw, uint8_t intensity)
{
uint8_t color[3];
color[0] = color[1] = intensity;
color[2] = intensity>>2;
generateUniformColor(raw,color);
return 0;
}
uint8_t generatePink(uint8_t *raw, uint8_t intensity)
{
uint8_t color[3];
color[0] = color[2] = intensity;
color[1] = intensity>>2;
generateUniformColor(raw,color);
return 0;
}
// 40/3 = 1.333
uint8_t generateRGB(uint8_t *raw, uint8_t intensity)
{
int raw_offset;
generateBlack(raw);
// R
raw_offset = getRawOffset(0, 0);
raw[raw_offset] = intensity;
raw_offset+=3;
raw[raw_offset] = intensity;
// G
raw_offset = getRawOffset(13, 0);
raw_offset++;
raw[raw_offset] = intensity;
raw_offset+=3;
raw[raw_offset] = intensity;
// B
raw_offset = getRawOffset(27, 0);
raw_offset++;
raw_offset++;
raw[raw_offset] = intensity;
raw_offset+=3;
raw[raw_offset] = intensity;
return 0;
}
// POWER LIMITER CODE START
//#define MAX_LEDTUBE_LINE_POWER (NB_COLUMNS*3*POWER_LIMIT)
void powerLimiter(uint8_t *raw, uint8_t intensity)
{
int line, column, i;
uint8_t *p;
uint16_t linePower;
uint16_t maxLinePower;
uint16_t ipowerReduction;
int max_ledtube_line_power;
p = raw;
maxLinePower = 0;
for (line=0;line<NB_LINES;line++)
{
linePower = 0;
for (column=0;column<NB_COLUMNS;column++)
{
linePower+= p[0] + p[1] + p[2];
p+=3;
}
if (linePower>maxLinePower)
maxLinePower = linePower;
}
// if (intensity<POWER_LIMIT)
// intensity = POWER_LIMIT;
max_ledtube_line_power = (NB_COLUMNS*3*intensity);
if (maxLinePower>max_ledtube_line_power)
{
ipowerReduction = (uint16_t) (256.0f*max_ledtube_line_power/maxLinePower);
p=raw;
i=RAW_SIZE;
do
{
*p = ((*p)*ipowerReduction) >> 8;
p++;
} while(--i);
}
}
// POWER LIMITER CODE END
uint8_t imageGenerator(uint32_t currentMode, uint8_t *raw, float time, uint8_t intensity)
{
uint8_t dynamic;
switch(currentMode)
{
case 1:
case 2:
case 3:
case 4:
case 5: dynamic = generatePlasma(raw,time,(uint8_t) currentMode, intensity); break;
case 7: dynamic = generatePink(raw, intensity); break;
case 8: dynamic = generateWhite(raw, intensity); break;
case 9: dynamic = generateYellow(raw, intensity); break;
case 10: dynamic = generateRGB(raw,intensity); break;
case 6:
case 11:
case 12:
case 13:
case 14:
case 15:
case 16:
case 17:
case 18:
case 19:
case 20: dynamic = generatePlasma(raw,time,(uint8_t) currentMode, intensity); break;
case 21: dynamic = generateBlack(raw); break;
default:return 0;
}
#ifdef POWER_LIMITER
powerLimiter(raw,intensity);
#endif
return dynamic;
}