2.Arduino代码 #include <Wire.h>#include "MAX30105.h"#include "spo2_algorithm.h"MAX30105 particleSensor;#define MAX_BRIGHTNESS 255#if defined(__AVR_ATmega328P__) || defined(__AVR_ATmega168__)//Arduino Uno doesn't have enough SRAM to store 100 samples of IR led data and red led da...
void rainbow(int wait) { // Hue of first pixel runs 5 complete loops through the color wheel. // Color wheel has a range of 65536 but it's OK if we roll over, so // just count from 0 to 5*65536. Adding 256 to firstPixelHue each time // means we'll make 5*65536/256 = ...
// RCspeed in Range: -100 (full speed reverse).. 0 .. 100 (full speed forward) char* RCspeed = strtok(NULL, ","); int iRCsteering = atoi(RCsteering); // convert string into integer int iRCspeed = atoi(RCspeed); // convert string into integer //rest of program } Android 应用...
Try changing the values of t1, t2, t3, t4 to various combinations of true/false. 16 possible states (4**2), decimal 0 to 15, binary 0b0000 to 0b1111. */ Serial.println( F( "[!] Enter binary in range '0 0 0 0' to '1 1 1 1' and hit ENTER" ) ) ; // Input over Se...
intbarX = bar * BARWIDTH + 5; // 删除旧水平中位数 if(oldHeight[i] > newHeight) { display.fillRect(barX, newHeight + 1, 7, oldHeight[i], SSD1306_BLACK); } // 删除旧的最大级别 if( oldMax[i] > newHeight) { for(intj = oldMax[i]; j > newHeight; j -= 2) { ...
int x = Wire.read():以整型形式接收数据 返回值:读到的字节数据 8) Wire.onReceive():在从机端注册一个事件,当从机收到主机发送的数据时即被触发。语法为: Wire.onReceive(handler):handler 当从机接收到数据时可被触发的事件。该事件带有一个int型参数(从主机读到的字节数)且没有返回值,如 void myHa...
constintmaxScale = 11; /* Sensor - Max9812 Declared */ constintsensorPin = A4; constintsampleWindow = 50;// 50ms = 20Hz unsignedintsample; unsignedlongstartMillis; unsignedlongtimeCycle; unsignedintsignalMax = 0; unsignedintsignalMin = 1024; ...
12.3int() 12.4 word() 12.5 long() 12.6 float() 十三、变量作用域&修饰符 13.1 variable scope(变量的作用域) 13.2 static(静态变量) 13.3 volatile 13.4 const 十四、辅助工具 14.1sizeof() 函数部分 十五、数字 I/O 15.1 pinMode() 15.2 digitalWrite() ...
int8_t rtn = oled.tickerTick(&state); // See above for definition of RTN_CHECK. if (rtn <= RTN_CHECK) { uint8_t pin = count%4; // ping-pong string selection so displayed string is not modified. uint8_t n = count%2; str[n] = "ADC" + String(pin) + ": " + analogRead...
int distance; Servo myServo; void setup() { pinMode(trigPin, OUTPUT); pinMode(echoPin, INPUT); Serial.begin(9600); myServo.attach(12); } void loop() { for (pos = 0; pos <= 180; pos ++) { // 0°到180° // in steps of 1 degree ...