A simple yet powerful library for LED sequential in C.

1. define colors

LED_Color(OFF, 0, 0, 0);
LED_Color(R, 0xFF, 0, 0);
LED_Color(G, 0, 0xFF, 0);
LED_Color(B, 0, 0, 0xFF);
LED_Color(Y, 0xFF, 0xFF, 0);
LED_Color(W, 0xFF, 0xFF, 0xFF);

2. define color sequential

LED_state_t colors5[] = {
	L(R, 300, FADE_TO_LINEAR | REVERSE | HEAD),
	L(OFF, 100, FADE_TO_LINEAR),
	L(G, 300, FADE_TO_LINEAR),
	L(OFF, 100, FADE_TO_LINEAR),
	L(B, 300, FADE_TO_LINEAR | REVERSE | TAIL)
};

3. define running mode

LED_strip(mod1, colors1);
LED_strip(mod2, colors2);
LED_strip(mod3, colors3);
LED_strip(mod4, colors4);
LED_strip(mod5, colors5);

4. implement void LED_OUT(int16_t R, int16_t G, int16_t B) which do real output

void LED_OUT(int16_t R, int16_t G, int16_t B) {
	LPC_TMR32B1->MR1 = 0x3FF - R_map[(R & 0x3FF) >> 2];
	LPC_TMR32B1->MR3 = 0x3FF - G_map[(G & 0x3FF) >> 2];
	LPC_TMR32B1->MR0 = 0x3FF - B_map[(B & 0x3FF) >> 2];
}

more can see RGBLED.cpp, base on mbed and EventDriven.

#include "RGBLED.h"

// colors
LED_Color(OFF, 0, 0, 0);
LED_Color(R, 0xFF, 0, 0);
LED_Color(G, 0, 0xFF, 0);
LED_Color(B, 0, 0, 0xFF);
LED_Color(Y, 0xFF, 0xFF, 0);
LED_Color(W, 0xFF, 0xFF, 0xFF);

// color sequential
LED_state_t colors1[] = {
   L(W, 250, SWITCH_TO),
   L(OFF, 25, SWITCH_TO),
   L(Y, 250, SWITCH_TO),
   L(OFF, 25, SWITCH_TO| LOOP | TAIL) // will go to first color
};

// running mode
LED_strip(mod1, colors1);

int main(){

	while(1){
		LED_tick(&mod1); // update state
		sleep(2); // sleep 2 ms
	}

	return 0;
}

[TOC]

update LED.

define Color with Name and RGB value.

define color sequential. Array of L(Color_Name, tick, TYPE).

show what color, how many tick, and TYPE. TYPE:

• HEAD : Start Mark (Must have if using REVERSE)
• TAIL : End Mark (Must have if using REVERSE)
• STOP : stop here forever
• LOOP : go 1st color
• REVERSE : go another way
• SWITCH_TO : switch to next color, no fading
• FADE_TO_LINEAR : linear fade to next color

define running mode with color sequential.

reset running mode to initial.