| | `int outputValue = 0;` | 变量保存 LED 的值。 | | `if (outputValue >= 40){``outputValue = 0;``} else {``outputValue = outputValue + 1;` | if else 语句检查某事是否为真;如果是,它做一件事,如果不是,它做另一件事。在这种情况下,它检查变量 outPutValue 的值是否大于或等于 4...
randomSeed(analogRead(0)); Seeds the random number generator with a value obtained from reading analog pin 0 void loop() Function that runs continuously after the setup() function, where the main code resides randNumber = random(300); Generates a random number between 0 and 299 and assigns ...
# speed = value between 0 and 255 # duration = value in milliseconds def __init__(self, name, desc, color, owner, speed = 125, duration = 100): # initilaizes our robot self.name = name self.desc = desc self.color = color self.owner = owner self.speed = speed self.duration ...
BoardGetUniqueId, BoardGetRandomSeed, lorawan_rx_handler, lorawan_has_joined_handler, lorawan_confirm_class_handler, lorawan_join_failed_handler, lorawan_unconfirmed_finished, lorawan_confirmed_finished};
display.drawLine(0, i, display.width(), i, WHITE); display.display(); delay(5); } } void testdrawchar(void) { display.setTextSize(1); display.setTextColor(WHITE); display.setCursor(0,0); for (uint8_t i=0; i < 168; i++) { ...
Here's another example using random samples and outputs i.e. non-power of 2 values.#define SAMPLES 1976 #define OUTPUTS 153Here 1976/153 = 12.91 and each bin has 13 values in it except the last that has one. So the algorithm gets it approximately right....
print('H'); // send a header character // send a random integer intValue = random(599); // generate a random number between 0 and 599 // send the two bytes that comprise that integer Serial.write(lowByte(intValue)); // send the low byte Serial.write(highByte(intValue)); // ...
Now that we know how to display 0-9 on the display, we’ll move forward to see how to produce a random number between 0-9. To achieve this, we use the “random()” function. random(max) “random()” will generate a random number between 0 and max-1. ...
int analogValue = analogRead(0);int analogVolts = analogReadMilliVolts(1);// print out the values you read:Serial.printf("ADC analog value = %d\n",analogValue);Serial.printf("ADC millivolts value = %d\n",analogVolts);delay(100); // delay in between reads for clear read from serial...
ASCII码表数字I/OpinMode()digitalWrite()digitalRead()模拟I/OanalogReference()analogRead()analogWrite()指高级I/OshiftOut()pulseIn()时间millis()delay(ms)delayMicroseconds(us)数学库min()max()abs()constrain()map()pow()sqrt()三角函数sin(rad)cos(rad)tan(rad)随机数randomSeed()random()random()位操作...