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#include "ws281x.h"
#include "delay.h"
#include "timer.h"
u16 pixelBuffer[PIXEL_NUM + RESET_NUM][24] = {0};
void ws281x_show(void)
{
DMA_SetCurrDataCounter(DMA1_Channel5,(PIXEL_NUM + RESET_NUM)* 24 );
DMA_Cmd(DMA1_Channel5, ENABLE);
TIM_Cmd(TIM4, ENABLE);
while(DMA_GetFlagStatus(DMA1_FLAG_TC5) !=SET);
DMA_Cmd(DMA1_Channel5, DISABLE );
DMA_ClearFlag(DMA1_FLAG_TC5);
TIM_Cmd(TIM4, DISABLE);
}
void ws281x_closeAll(void)
{
uint16_t i;
uint8_t j;
for(i = 0; i < PIXEL_NUM; i++)
{
for(j = 0; j < 24; j++)
{
pixelBuffer[i][j] = WS_LOW;
}
}
ws281x_show();
}
uint32_t ws281x_color(uint8_t red, uint8_t green, uint8_t blue)
{
return ((green << 16) | (red << 8) | blue);
}
void ws281x_setPixelColor(uint16_t n ,uint32_t GRBcolor)
{
uint8_t i;
if(n < PIXEL_NUM)
{
for(i = 0; i < 24; i++)
{
pixelBuffer[n][i] = ((GRBcolor << i) & 0X800000) ? WS_HIGH : WS_LOW;
}
}
}
/**********************************************************************************************************/
// level
// 8 08 09
// 7 07 10
// 6 06 11
// 5 05 12
// 4 04 13
// 3 03 14
// 2 02 15
// 1 01 16
// 0 off
void ws281x_setPixelColor_ringleds(uint16_t n ,uint32_t GRBcolor) //PIXEL_NUM:12/16/2*n Ring leds
{
uint8_t i,k,p;
for(i = 0; i < 24; i++)
{
for(k = 0;(k < n) && (n <= (PIXEL_NUM / 2));k++)
{
pixelBuffer[k][i] = ((GRBcolor << i) & 0X800000) ? WS_HIGH : WS_LOW;
pixelBuffer[(PIXEL_NUM - 1) - k][i] = ((GRBcolor << i) & 0X800000) ? WS_HIGH : WS_LOW;
}
for(p = n;(p < ( PIXEL_NUM - n)) && (n <= (PIXEL_NUM / 2)) ;p++)
{
pixelBuffer[p][i] = WS_LOW;
}
}
}
// fill the dots one by one with a color on left and right sides at the same time
void ws281x_colorWipe_lr( uint32_t c, uint8_t num)
{
uint16_t i;
if(num > PIXEL_NUM / 2)
{
num = PIXEL_NUM / 2;
}
for(i = 0; i < (num + 1); i++) //
{
ws281x_setPixelColor_ringleds(i ,c);
ws281x_show();
//delay_ms(wait); //> 0.05ms will should be using timer
}
}
//Freq rising or falling lights
void ws281x_colorWipe_freq(uint8_t type)
{
switch(type)
{
case 1:
ws281x_colorWipe_lr(ws281x_color(50, 0, 0), ws281x_freq_num); // red
break;
case 2:
ws281x_colorWipe_lr(ws281x_color(0, 50, 0), ws281x_freq_num); // green
break;
case 3:
ws281x_colorWipe_lr(ws281x_color(0, 0, 50), ws281x_freq_num); // Blue
break;
case 4:
ws281x_colorWipe_lr(ws281x_color(50, 50, 50), ws281x_freq_num); // white
break;
default:
ws281x_colorWipe_lr(ws281x_color(50, 0, 0), ws281x_freq_num); // red
break;
}
}
/***************************************************************************************************/
uint32_t ws281x_colorTran(uint8_t tran,uint8_t color_mode) //The colour is a transition r/g/b back to r/g/b(color_mode:Red1,Green2,Blue3). space 3
{
tran = 255 - tran;
if(tran < 85)
{
switch(color_mode)
{
case 1:
return ws281x_color(tran * 3, 0, 0);
case 2:
return ws281x_color(0, tran * 3, 0);
case 3:
return ws281x_color(0, 0, tran * 3);
default:
return ws281x_color(tran * 3, 0, 0);
}
}
if(tran < 170)
{
tran -= 85;
switch(color_mode)
{
case 1:
return ws281x_color(255, 0, 0);
case 2:
return ws281x_color(0,255, 0);
case 3:
return ws281x_color(0, 0, 255);
default:
return ws281x_color(255, 0, 0);
}
}
tran -= 170;
switch(color_mode)
{
case 1:
return ws281x_color(255 - tran * 3, 0, 0);
case 2:
return ws281x_color(0, 255 - tran * 3, 0);
case 3:
return ws281x_color(0, 0, 255 - tran * 3);
default:
return ws281x_color(255 - tran * 3, 0, 0);
}
}
void ws281x_colorblnCtrl(uint8_t color_mode) // ws281x_bln_num use timer,mode:red1/green2/blue3
{
uint16_t i;
if( !(ws281x_bln_num == ws281x_bln_oldnum))
{
for(i = 0; i < PIXEL_NUM; i++)
{
ws281x_setPixelColor(i ,ws281x_colorTran(ws281x_bln_num,color_mode));
}
ws281x_show();
ws281x_bln_oldnum = ws281x_bln_num;
}
}
/***************************************************************************************************/
void ws281x_setPixelColor_wheel_leds(uint16_t n ,uint32_t GRBcolor) //n:0~15 whirling leds
{
uint8_t i,k;
for(i = 0; i < 24; i++)
{
for(k = 0;k < PIXEL_NUM;k++)
{
pixelBuffer[k][i] = WS_LOW;
}
pixelBuffer[n][i] = ((GRBcolor << i) & 0X800000) ? WS_HIGH : WS_LOW;
if( n < PIXEL_NUM/2)
{
pixelBuffer[n + (PIXEL_NUM/2)][i] = ((GRBcolor << i) & 0X800000) ? WS_HIGH : WS_LOW;
}
else
{
pixelBuffer[n - (PIXEL_NUM/2)][i] = ((GRBcolor << i) & 0X800000) ? WS_HIGH : WS_LOW;
}
}
ws281x_show();
}
void ws281x_display(void)
{
if(ws281x_led_display_mode == 1)
{
ws281x_colorblnCtrl(ws281x_bln_mode);
}
if(ws281x_led_display_mode == 2)
{
ws281x_colorWipe_freq(ws281x_freq_color_type);
}
if(ws281x_led_display_mode == 3)
{
ws281x_setPixelColor_wheel_leds(ws281x_whirl_index,
ws281x_color(color_R[ws281x_whirl_colortran_index],
color_G[ws281x_whirl_colortran_index],
color_B[ws281x_whirl_colortran_index])) ;
}
}
/*
void ws281x_setPixelColor_11x44leds(uint16_t n ,uint32_t GRBcolor) //PIXEL_NUM:11x44 leds n:0~10
{
uint8_t i,k,p,q;
for(i = 0; i < 24; i++)
{
for(k = 0;k < 44;k++)
{
for(q = 0 ;q < (n +1);q++)
{
pixelBuffer[q + k*11][i] = ((GRBcolor << i) & 0X800000) ? WS_HIGH : WS_LOW;
}
for(p = 1;p < (10-n);p++)
{
pixelBuffer[(n + p) + k*11][i] = WS_LOW;
}
}
}
}
*/

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