calculate_unscaled_power_mW()

uint32_t calculate_unscaled_power_mW	(	const CRGB *	ledbuffer,
		uint16_t	numLeds )

Determines how many milliwatts the current LED data would draw at max brightness (255)

Parameters

ledbuffer	the LED data to check
numLeds	the number of LEDs in the data array

Returns

the number of milliwatts the LED data would consume at max brightness

Definition at line 61 of file power_mgt.cpp.

{
    uint32_t red32 = 0, green32 = 0, blue32 = 0;
    const CRGB* firstled = &(ledbuffer[0]);
    uint8_t* p = (uint8_t*)(firstled);
 
    uint16_t count = numLeds;
 
    // This loop might benefit from an AVR assembly version -MEK
    while( count) {
        red32   += *p++;
        green32 += *p++;
        blue32  += *p++;
        --count;
    }
 
    red32   *= gRed_mW;
    green32 *= gGreen_mW;
    blue32  *= gBlue_mW;
 
    red32   >>= 8;
    green32 >>= 8;
    blue32  >>= 8;
 
    uint32_t total = red32 + green32 + blue32 + (gDark_mW * numLeds);
 
    return total;
}

References gBlue_mW, gDark_mW, gGreen_mW, gRed_mW, and p.

Referenced by calculate_max_brightness_for_power_mW(), and calculate_max_brightness_for_power_mW().

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