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@ -67,19 +67,27 @@ void ws2812_setleds(LED_TYPE *ledarray, uint16_t number_of_leds) { |
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#define w_onecycles (((F_CPU / 1000) * w_onepulse + 500000) / 1000000) |
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#define w_totalcycles (((F_CPU / 1000) * w_totalperiod + 500000) / 1000000) |
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// w1 - nops between rising edge and falling edge - low |
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#define w1 (w_zerocycles - w_fixedlow) |
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// w2 nops between fe low and fe high |
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#define w2 (w_onecycles - w_fixedhigh - w1) |
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// w3 nops to complete loop |
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#define w3 (w_totalcycles - w_fixedtotal - w1 - w2) |
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#if w1 > 0 |
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# define w1_nops w1 |
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// w1_nops - nops between rising edge and falling edge - low |
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#if w_zerocycles >= w_fixedlow |
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# define w1_nops (w_zerocycles - w_fixedlow) |
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#else |
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# define w1_nops 0 |
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#endif |
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// w2_nops - nops between fe low and fe high |
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#if w_onecycles >= (w_fixedhigh + w1_nops) |
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# define w2_nops (w_onecycles - w_fixedhigh - w1_nops) |
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#else |
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# define w2_nops 0 |
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#endif |
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// w3_nops - nops to complete loop |
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#if w_totalcycles >= (w_fixedtotal + w1_nops + w2_nops) |
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# define w3_nops (w_totalcycles - w_fixedtotal - w1_nops - w2_nops) |
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#else |
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# define w3_nops 0 |
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#endif |
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// The only critical timing parameter is the minimum pulse length of the "0" |
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// Warn or throw error if this timing can not be met with current F_CPU settings. |
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#define w_lowtime ((w1_nops + w_fixedlow) * 1000000) / (F_CPU / 1000) |
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@ -90,18 +98,6 @@ void ws2812_setleds(LED_TYPE *ledarray, uint16_t number_of_leds) { |
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# warning "Please consider a higher clockspeed, if possible" |
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#endif |
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#if w2 > 0 |
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# define w2_nops w2 |
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#else |
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# define w2_nops 0 |
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#endif |
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#if w3 > 0 |
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# define w3_nops w3 |
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#else |
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# define w3_nops 0 |
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#endif |
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#define w_nop1 "nop \n\t" |
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#define w_nop2 "rjmp .+0 \n\t" |
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#define w_nop4 w_nop2 w_nop2 |
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