ws2812 controller

#include <stdlib.h>
#include <stdint.h>

typedef uint8_t         u08;
#define RAND8()         (rand() % 256)
#define RGB_LED_PORT    (gpioPortE)
#define RGB_LED_PIN     (11)
#define LED_HI()        GPIO_PinOutSet(RGB_LED_PORT, RGB_LED_PIN)
#define LED_LO()        GPIO_PinOutClear(RGB_LED_PORT, RGB_LED_PIN)

__STATIC_INLINE void T0H(void) 
{
    LED_HI();
    __ASM volatile ("nop; nop; nop; nop; nop; nop;");                // 350 ns
}

__STATIC_INLINE void T1H(void) 
{
    LED_HI();
    __ASM volatile ("nop; nop; nop; nop; nop; nop; nop; nop; nop; nop; nop;"
                    "nop; nop;");                       // 700 ns
}

__STATIC_INLINE void T0L(void) 
{
    LED_LO();
    __ASM volatile ("nop; nop; nop; nop; nop; nop; nop; nop; nop; nop; nop;"
                    "nop; nop; nop; nop;");         // 800 ns
}

__STATIC_INLINE void T1L(void) 
{
    LED_LO();
    __ASM volatile ("nop; nop; nop; nop; nop; nop; nop; nop; nop; nop; nop;");      // 600 ns
}

__STATIC_INLINE void T1(void)
{
    T1H();
    T1L();
}

__STATIC_INLINE void T0(void)
{
    T0H();
    T0L();
}

__STATIC_INLINE void show_rgb(volatile u08 r, volatile u08 g, volatile u08 b)
{
    int i;
    for (i = 0; i < 8; i++) {
        if (r & 0x80)
            T1();
        else
            T0();
        r = (r << 1);
    }
    for (i = 0; i < 8; i++) {
        if (g & 0x80)
            T1();
        else
            T0();
        g = (g << 1);
    }
    for (i = 0; i < 8; i++) {
        if (b & 0x80)
            T1();
        else
            T0();
        b = (b << 1);
    }    
}