示例#1
0
/*
 * Adjusts brightness of the set point LEDs
 */
static void adjust_setpoint_led_brightness( void )
{
    float up_led_brightness_level;
    float down_led_brightness_level;
    float up_led_duty_cycle;
    float down_led_duty_cycle;

    if ( setpoint.temperature > DEFAULT_SETPOINT )
    {
        up_led_brightness_level   = setpoint.temperature - DEFAULT_SETPOINT;
        down_led_brightness_level = 0.0f;
    }
    else
    {
        up_led_brightness_level   = 0.0f;
        down_led_brightness_level = DEFAULT_SETPOINT - setpoint.temperature;
    }

    /* Update LED brightness */
    up_led_duty_cycle  = LED_BRIGHTNESS_EQUATION( up_led_brightness_level );
    down_led_duty_cycle = LED_BRIGHTNESS_EQUATION( down_led_brightness_level );

    wiced_pwm_init ( SETPOINT_UP_LED, SETPOINT_LED_PWM_FREQ_HZ, up_led_duty_cycle );
    wiced_pwm_start( SETPOINT_UP_LED );
    wiced_pwm_init ( SETPOINT_DOWN_LED, SETPOINT_LED_PWM_FREQ_HZ, down_led_duty_cycle );
    wiced_pwm_start( SETPOINT_DOWN_LED );
}
示例#2
0
文件: ws2812.c 项目: Daedaluz/ws2812
void ws2812_init() {
	wiced_pwm_init(WICED_PWM_2, 800000, 0);
	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA1, ENABLE);
	DMA_Init(DMA1_Stream7, &dma);
	TIM_DMACmd(TIM4, TIM_DMA_CC3, ENABLE);
	DMA_Cmd(DMA1_Stream7, ENABLE);
	wiced_pwm_start(WICED_PWM_2);
}
示例#3
0
文件: pwm.c 项目: AdyiPool/WICED-SDK
void application_start( )
{
    float temp  = 100;
    float duty = 100;
    float cnt = 0;
    wiced_bool_t rise = WICED_FALSE;

    /* Initialise the WICED device */
    wiced_init();
	
    // The RGB and setup button are initialized in platform.c

    WPRINT_APP_INFO( ( "The RGB is breathing green.\n" ) );

    while ( 1 )
    {
        wiced_pwm_init( RGB_G_PWM, 1000, duty );
        wiced_pwm_start( RGB_G_PWM );

        wiced_rtos_delay_milliseconds( 10 );

        if(rise)
        {
            temp += cnt;
            cnt -= 0.005;
            if(temp >= 100.0)
            {
                duty = 100;
                cnt = 0;
                rise = WICED_FALSE;
            }
            else
            {
                duty = temp;
            }
        }
        else
        {
            cnt += 0.005;
            temp -= cnt;
            if(temp <= 0.0)
            {
                duty = 0;
                rise = WICED_TRUE;
            }
            else
            {
                duty = temp;
            }
        }
    }
}