Adafruit USB Host FeatherWing with MAX3421E Product ID: 5858 Lots of microcontrollers these days have USB ports on them, to program or debug, act like a keyboard or disk drive, or simply send data between a computer and your firmware. But did you know that you can also add a USB Host...
10.1 HIGH|LOW(引脚电压定义) 10.2 INPUT|OUTPUT(数字引脚(Digital pins)定义) 10.3 true | false(逻辑层定义) 10.4 integer constants(整数常量) 10.5 floating point constants(浮点常量) 十一、数据类型 11.1 void 11.2 boolean(布尔) 11.3 char(有号数据类型) 11.4 unsigned char(无符号数据类型) 11.5 byte(...
intnewHeight = 0; intnewMax = 0; // 计算实际分贝 if(median[i] > 0 && max[i] > 0 ) { newHeight = 20.0 * (log10(median[i] ) - reference); newMax = 20.0 * (log10(max[i] ) - reference); } // 调整最小和最大级别 if(newHeight < 0 || newMax < 0) { newHeight = ...
10.1 HIGH|LOW(引脚电压定义) 10.2 INPUT|OUTPUT(数字引脚(Digital pins)定义) 10.3 true|false(逻辑层定义) 10.4 integerconstants(整数常量) 10.5 floating point constants(浮点常量) 十一、数据类型 11.1 void 11.2 boolean(布尔) 11.3 char(有号数据类型) 11.4 unsignedchar(无符号数据类型) 11.5 byte(无符号...
// Serial buffer size: calculate based on max input size expected for one command #define INPUT_SIZE 30 void loop() { // Get next command from serial bluetooth (add 1 byte for final 0) char input[INPUT_SIZE + 1]; // array of type char (C-string) ...
Add IOXESP32-C6 and ATD3.5-S3 board by @maxpromer in #10471 Add our new board "cezerio dev ESP32C6" by @DogushC in #10462 Add Waveshare ESP32-S3-Touch-LCD-1.46 board by @Sail-211010 in #10482 Added variant for Waveshare ESP32-S3-Touch-AMOLED-1.8 by @Y1hsiaochunnn in #10433 ...
pinMode(BUTTON_PIN, INPUT); pinMode(LED_PIN, OUTPUT); sc_timer_service_init( &timer_service, timers, MAX_TIMERS, (sc_raise_time_event_fp) &lightCtrl_raiseTimeEvent ); lightCtrl_init(&lightctrl); //initialize statechart lightCtrl_enter(&lightctrl); //enter the statechart ...
int oldMax[20]; double maxInFreq; void loop() { // 采样 for (int i = 0; i < SAMPLES; i++) { unsigned long newTime = micros(); int value = analogRead(ANALOG_PIN); vReal[i] = value; vImag[i] = 0; while (micros() < (newTime + sampling_period_us)) { ...
longran (min,max) 随机数函数,返回数据大于 等于min,小于max。 外部中断函数 attachInterrupt(interrupt, , mode) 外部中断只能 用到数字IO 口2 和3,interrupt 表示中断口初始0 或 1,表示一个功能函数,mode:LOW 低电平中断, CHANGE 有变化就中断,RISING 上升沿中断,FALLING 下降沿中断。 7 Arduino 手册(精要...
newMax = 20.0 * (log10(max[i] ) - reference); } // 调整最小和最大级别 if (newHeight < 0 || newMax < 0) { newHeight = 1; newMax = 1; } if (newHeight >= SCREEN_HEIGHT - 2) { newHeight = SCREEN_HEIGHT - 3; } if (newMax >= SCREEN_HEIGHT - 2) { newMax = SCREE...