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DotStar FeatherWing
https://learn.adafruit.com/adafruit-dotstar-featherwing-adafruit
APA102 datasheet
https://cdn-learn.adafruit.com/assets/assets/000/084/591/original/APA102_LED.pdf?1574117503
DIN D11 -> MOSI
CIN D13 -> SCK
SPI Mode3 CPOL1 and CPH1 (STM: SPI_POLARITY_HIGH, SPI_PHASE_2EDGE)
MSB first, no Chip Select
Start Frame 4 Bytes 0x00000000
n LED Frames 4 Bytes
1st Byte global Brightness 5 bits, 3 higher bit are 1
2nd Blue
3th Green
4th Red
End Frame 4 Bytes 0xFFFFFFFF
--
Peter Schmid - 2021-05-04
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Topic revision: r3 - 2022-12-04
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PeterSchmid
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