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Hi,
I've been trying to combine two lighting effects with my Neopixels and after fixing a few problems with declaring variables in some lines of the code, the IDE gave me a warning message about an expression list being treated as a 'compound expression list' when I attempted to verify the sketch.
Here is my code;
#include <Adafruit_NeoPixel.h>
#define PIN 6
#define NUM_LEDS 60
// Parameter 1 = number of pixels in strip
// Parameter 2 = pin number (most are valid)
// Parameter 3 = pixel type flags, add together as needed:
// NEO_KHZ800 800 KHz bitstream (most NeoPixel products w/WS2812 LEDs)
// NEO_KHZ400 400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers)
// NEO_GRB Pixels are wired for GRB bitstream (most NeoPixel products)
// NEO_RGB Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2)
Adafruit_NeoPixel strip = Adafruit_NeoPixel(60, PIN, NEO_GRB + NEO_KHZ800);
void setup() {
strip.begin();
strip.show(); // Initialize all pixels to 'off'
}
void loop() {
for(int i=60;i<5;i++) {
rainbowCycle(20);
}
colorWipe(0xff,0x00,0x00, 50);
colorWipe(0x00,0xff,0x00, 50);
colorWipe(0x00,0x00,0xff, 50);
colorWipe(0xB7,0x00,0xFE, 50);
colorWipe(0xff,0xff,0x00, 50);
colorWipe(0xff,0xA5,0x00, 50);
}
void rainbowCycle(int SpeedDelay) {
byte *c;
uint16_t i, j;
for(j=0; j<256*5; j++) { // 5 cycles of all colors on wheel
for(i=0; i< NUM_LEDS; i++) {
c=Wheel(((i * 256 / NUM_LEDS) + j) & 255);
int setPixel(i, *c, *(c+1), *(c+2));
}
int showStrip();
delay(SpeedDelay);
}
}
byte * Wheel(byte WheelPos) {
static byte c[3];
if(WheelPos < 85) {
c[0]=WheelPos * 3;
c[1]=255 - WheelPos * 3;
c[2]=0;
} else if(WheelPos < 170) {
WheelPos -= 85;
c[0]=255 - WheelPos * 3;
c[1]=0;
c[2]=WheelPos * 3;
} else {
WheelPos -= 170;
c[0]=0;
c[1]=WheelPos * 3;
c[2]=255 - WheelPos * 3;
}
return c;
}
void colorWipe(byte red, byte green, byte blue, int SpeedDelay) {
for(uint16_t i=0; i<NUM_LEDS; i++) {
int setPixel(i, red, green, blue);
int showStrip();
delay(SpeedDelay);
}
}
Anyone have any ideas where I've gone wrong or if its something small that won't affect the output of the Neopixel strip?
Thanks,
Dan
Hi Dan,
apologies for the late reply.
Could it be that you're running the Arduino IDE on a Window machine? If so: consider upgrading to a newer version. I recall issues like that in the past related to a specific version (forgot which one). This seems to be a bug in the C compiler.
