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#define DIN 25
#define CS 26
#define CLK 27
//The total numer of Segments
#define Segments 4
//The delay between movements
#define delayTime 200
//This creates an uninitilized LedController object.
//It will be initilized in the setup function.
LedController<Segments,1> lc = LedController<Segments,1>();
//This is my pixelart of a rocket which will be used in this example
ByteBlock rocket= ByteBlock({
B00000000,
B00001111,
B00111110,
B11111101,
B00111110,
B00001111,
B00000000,
B00000000
});
ByteBlock rocketColumns;
//switches the state of the internal LED
void switchLED() {
static bool LEDON = false;
if(LEDON) {
digitalWrite(2, LOW);
} else {
digitalWrite(2, HIGH);
}
LEDON = !LEDON;
}
void setup() {
//initilizes the LedController without hardware spi.
lc.init(DIN,CLK,CS);
//make a array of columns out of the rocket
//this is needed to shift it in correctly (you can leave this line if you want to)
rocketColumns = ByteBlock::makeColumns(rocket);
//enable the LED to have a clock
pinMode(2, OUTPUT);
}
void loop() {
lc.clearMatrix();
for(int dir = 0; dir < 2; dir++) {
delay(delayTime);
for(int i = 0; i < 8*(Segments+1); i++) {
//blink led for each iteration
switchLED();
//if rocket not fully inside let it fly in
auto in = (i<8) ? rocketColumns : 0x00;
//if dir is 0 move right if not move left
dir == 0 ? lc.moveRight(in) : lc.moveLeft(in);
delay(delayTime);
//decide whether to move up or down
if(i > 7) {
if(i % 6 < 3) {
lc.moveDown();
} else {
lc.moveUp();
}
}
delay(delayTime);
}
}
}
这段程序中标红的代码怎么理解呢？ |
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发表于 2021-8-8 20:41
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