/
FTRGBLED.cpp
53 lines (46 loc) · 1.26 KB
/
FTRGBLED.cpp
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#include "FTRGBLED.h"
#include <stdint.h>
void RGBLEDChain::begin()
{
data = (FTLEDColour *)malloc(length*sizeof(FTLEDColour));
memset(data, 0, length*sizeof(FTLEDColour));
pinMode(pin_cki, OUTPUT);
digitalWrite(pin_cki, LOW);
pinMode(pin_sdi, OUTPUT);
update(); // start with everything off
}
void RGBLEDChain::setLED(int index, byte red, byte green, byte blue)
{
if(!data)
return;
data[index].red = red;
data[index].green = green;
data[index].blue = blue;
}
void RGBLEDChain::setLED(int index, const FTLEDColour &colour)
{
setLED(index, colour.red, colour.green, colour.blue);
}
void RGBLEDChain::update()
{
if(!data)
return;
uint8_t *data_raw = (uint8_t *)data;
volatile uint8_t *port_sdi = portOutputRegister(digitalPinToPort(pin_sdi));
uint8_t mask_sdi = digitalPinToBitMask(pin_sdi);
volatile uint8_t *port_cki = portOutputRegister(digitalPinToPort(pin_cki));
uint8_t mask_cki = digitalPinToBitMask(pin_cki);
for(int led = 0; led < length*3; led++) {
uint8_t byte_raw = data_raw[led];
for(uint8_t bit = 1<<7; bit > 0; bit>>=1) {
if(byte_raw & bit) {
*port_sdi |= mask_sdi;
} else {
*port_sdi &= ~mask_sdi;
}
*port_cki |= mask_cki;
*port_cki &= ~mask_cki;
}
}
delay(1);
}