问题
I am having an issue retrieving the values stored in a Struct and have no idea why.
I am working on the Arduino IDE 1.8.7
In h file
// structure to hold each "display unit" settings
typedef struct {
int displayState;
int pixelState[];
int startLed; // the first LED number EG: 8 if the previous display used 0-7
int endLed;
int brightness;
int saturation;
} struct_displayType;`
In setup
// display[0] is all leds
displayUnit[0].displayState=5;
displayUnit[0].brightness=255;
displayUnit[0].startLed=0;
displayUnit[0].endLed=NUM_LEDS;
displayUnit[0].saturation=127;
displayUnit[1].displayState=5;
displayUnit[1].brightness=255;
displayUnit[1].startLed=8;
displayUnit[1].endLed=15;
displayUnit[1].saturation=127;
In loop
BreezeMapPixels(displayUnit[0],SOFT_BREEZE);
in Function
void BreezeMapPixels(struct_displayType &mDisplayUnit, int breezeStrength)
{
Serial.println("Breeze Module");
Serial.println( mDisplayUnit.startLed + mDisplayUnit.endLed);
}
The Serial.println is not giving the values stored in the Struct. Please help me to find out the problem.
***************** Full Code ********************
void setup() {
pinMode(LED_PIN, OUTPUT);
pinMode(BUTTON, INPUT);
FastLED.addLeds<CHIPSET, LED_PIN>(leds, NUM_LEDS);
attachInterrupt(BUTTON,interruptRoutine,RISING);
// serial debuging
Serial.begin(9600); // open the serial port at 9600 bps:
InitPixelStates(displayUnit[0]);
// Drying Grass
LEDcolor[0]=CHSV(22,187,217); //0xAAD93A;
LEDcolor[1]=CHSV(21,184,244); //0xC2F444;
LEDcolor[2]=CHSV(21,94,180);//0xDBF49A;
LEDcolor[3]=CHSV(16,94,200);//0xF4EE9A;
LEDcolor[4]=CHSV(12,94,220); //0xF4D99A;
//
//LEDcolor[2]=CHSV(21,94,244);//0xDBF49A;
//LEDcolor[3]=CHSV(16,94,244);//0xF4EE9A;
//LEDcolor[4]=CHSV(12,94,244); //0xF4D99A;
// Define each display's LED range
// display[0] is all leds
displayUnit[0].displayState=5;
displayUnit[0].brightness=255;
displayUnit[0].startLed=0;
displayUnit[0].endLed=NUM_LEDS;
displayUnit[0].saturation=127;
displayUnit[1].displayState=5;
displayUnit[1].brightness=255;
displayUnit[1].startLed=8;
displayUnit[1].endLed=15;
displayUnit[1].saturation=127;
Serial.println("Setup Done");
interruptMode=1;
}
#include "definitions.h"
void loop() {
if(interruptMode==1){ //Soft Breeze
// Serial.println("Rest int");
// restingColour(displayUnit[0]);
// restingColour(displayUnit[1]);
BreezeMapPixels(displayUnit[0],SOFT_BREEZE);
}
if(interruptMode==2){ // Strong Breeze
Serial.println("Breeze int");
// restingBreeze(displayUnit[0]);
Serial.println("Breeze int");
BreezeMapPixels(displayUnit[0],STRONG_BREEZE);
}
//if(interruptMode==3){ // Fluro Flicker
// fadeToBlack();
//
//}
FastLED.show();
FastLED.delay(20);
}
/* **********************************
Start of Code
* *********************************/
enum { SteadyDim, GettingBrighter, GettingDimmerAgain };
void InitPixelStates(struct_displayType &mDisplayUnit)
{
for ( uint16_t i = mDisplayUnit.startLed; i < mDisplayUnit.endLed; i++) {
mDisplayUnit.pixelState[i] == SteadyDim;
leds[i]=BASE_COLOR;
Serial.println(i);
}
// memset( PixelState, sizeof(PixelState), SteadyDim); // initialize all the pixels to SteadyDim.
// fill_solid( leds, NUM_LEDS, CRGB(0,0,0));
}
void BreezeMapPixels(struct_displayType &mDisplayUnit, int breezeStrength)
{
// Serial.println("Breeze Module");
Serial.println( &mDisplayUnit.startLed + mDisplayUnit.endLed);
// for ( uint16_t i = 0; i < NUM_LEDS; i++) {
for ( uint16_t i = mDisplayUnit.startLed; i < mDisplayUnit.endLed; i++) {
//Serial.println("Steady " + i);
if ( mDisplayUnit.pixelState[i] == SteadyDim) {
// this pixels is currently: SteadyDim
// so we randomly consider making it start getting brighter
leds[i]=BASE_COLOR;
if ( random8() < breezeStrength) {
mDisplayUnit.pixelState[i] = GettingBrighter;
}
} else if ( mDisplayUnit.pixelState[i] == GettingBrighter ) {
Serial.println("Brighter " + i);
// this pixels is currently: GettingBrighter
// so if it's at peak color, switch it to getting dimmer again
if ( leds[i] >= PEAK_COLOR ) {
mDisplayUnit.pixelState[i] = GettingDimmerAgain;
} else {
// otherwise, just keep brightening it:
leds[i] += DELTA_COLOR_UP;
}
} else { // getting dimmer again
Serial.println("Dimmer " + i);
// this pixels is currently: GettingDimmerAgain
// so if it's back to base color, switch it to steady dim
if ( leds[i] <= BASE_COLOR ) {
leds[i] = BASE_COLOR; // reset to exact base color, in case we overshot
mDisplayUnit.pixelState[i] = SteadyDim;
} else {
// otherwise, just keep dimming it down:
leds[i] -= DELTA_COLOR_DOWN;
}
}
}
}
definitions.h
#include <FastLED.h>
#define NUM_LEDS 16
#define LED_PIN 6
#define CHIPSET NEOPIXEL//WS2812B//WS2811
#define BRIGHTNESS 50
#define FRAMES_PER_SECOND 60
#define BUTTON 2 //trigger button
int interruptMode; // current mode - Testing only
// structure to hold each "display unit" settings
typedef struct {
int displayState;
int pixelState[];
int startLed; // the first LED number EG: 8 if the previous display used 0-7
int endLed;
int brightness;
int saturation;
} struct_displayType;
// An array of the displays
struct_displayType displayUnit[30];
/* -------------
* State types
* -------------
* 1 - resting
* 2 - flickering
* 3 - Warming up
* 4 - Green
* 5 - black
*/
/* **********************************
Parameters for Breeze
* *********************************/
// Parameters include: background color, peak color, and speed
// of brightening and dimming.
//
// Base green color
#define BASE_COLOR CRGB(71, 94, 18)
// Peak green color to brighten up to
#define PEAK_COLOR CRGB(201, 231, 131)
// Currently set to brighten up a bit faster than it dims down,
// but this can be adjusted.
// Amount to increment the color by each loop as it gets brighter:
#define DELTA_COLOR_UP CRGB(6,6,6)
// Amount to decrement the color by each loop as it gets dimmer:
#define DELTA_COLOR_DOWN CRGB(3,3,3)
// Chance of each pixel starting to brighten up.
// 1 or 2 = a few brightening pixels at a time.
// 10 = lots of pixels brightening at a time.
#define SOFT_BREEZE 1
#define STRONG_BREEZE 5
CHSV LEDcolor[16];
来源：https://stackoverflow.com/questions/53493265/getting-a-value-from-a-struct-array-arduino