takara kasai / Mbed 2 deprecated LEDTape_WS2812

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Dependencies:   mbed

Fork of LEDTape_WS2812 by Suga koubou

Homepage

this program is forked from following programs. http://mbed.org/users/okini3939/code/LEDTape_WS2812/

differences

diffs from parent source.

- 1. adapted to new type of WS2812.

- 2. change output level to be reversed.

1.adapted to new type of WS2812.

CODE:0

 __________
|          |________________|

0.4[us] ±150[ns]     0.85[us] ±150[ns] 
(old module: 0.35[us] 0.8[us])

CODE:1

 _______________
|               |___________|

0.8[us] ±150[ns]     0.45[us] ±150[ns] 
(old module: 0.7[us] 0.6[us])

CODE:RET

     > 50[us] 
|______________________|

2. change output level to be reversed

mbed             LED module
----------+            +--------
Vcc       | ---------- | 5[v]
MOSI      | ---|>----- |  DIO
GND       | ---------- | GND
----------+            +--------

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