3.1 通过 switch - case 语句实现 3.2 通过 Arduino 库实现 3.3 其他方式 4. 示例一:按键去抖动程序的优化 4.1 传统的按键去抖动程序 4.2 优化后的按键去抖动程序 5. 示例二:通过有限状态机实现的闹钟程序 6. 后记 1. 什么是有限状态机 根据维基百科上的定义,有限状态机(finite-state machine, FSM,简称状态...
“state”实际上是一个case标签,它对相应的状态+ F执行函数调用,因此当State( foo );返回1时,foof()实际上是break ; case foo: if( fooF() ),状态函数完成后,将选择下一个状态。 同样,StateFunction()也是一个宏,StateFunction( foo )变成了bool fooF()。我为此使用宏有几个原因。首先,它允许我在State...
its cloud variables appear in the right column. Note that cloud variables that are incompatible with the widget will be greyed out. In our case, thebutton_statevariable is a boolean, which isn’t compatible with this widget. So when you select ourThing...
In this case, we are using a hardware interrupt that is triggered by a state change on one of the digital pins. Most Arduino designs have two hardware interrupts (referred to as "interrupt0" and "interrupt1") hard-wired to digital I/O pins 2 and 3, respectively. The Arduino Mega has...
case 6:{Serial.printf("switch语句判断出打印6次。\r\n");break;} default:{Serial.printf("switch语句判断出打印其它次数:[%d]。\r\n",button.getNumberClicks());break;} } } //回调函数绑定子程序 void button_event_init(){ button.reset();//清除一下按钮状态机的状态 ...
最后,并非所有“libgcc”函数都默认公开。例如,开关助手功能没有公开。您可以将它们添加到“mo_sym.h”或在您的应用程序中将“switch...case...”替换为“ ”。if...else... RTT-QRCode 应用程序 有一个更复杂的示例RTT-QRCode,可以构建为 MSH 命令或 Arduino 应用程序。请查看代码并玩得开心!
switch(u8state){ case GET_SYNC_STATE: // Waiting for packet sync byte 0x55 if (data[Read_pt++] == ESP3_SYNC_CODE){ u8state = GET_HEADER_STATE; u8Count = 0; u8CRC = 0; } // printf("111\r\n"); break; case GET_HEADER_STATE: // Read the header bytes ...
That text needs to be converted into machine-readable code, suitable for your target device. This is a job for either a compiler or an interpreter, depending upon which language you are using, That machine-readable code is then uploaded to the target device. In the case of interpreted langua...
是因为MUC有一个识别其型号的唯一代码。当您引导加载芯片时，Arduino IDE 会检查所选的芯片是否与其连接...
Each time this function is called in the main loop, the program executes the code in the function before continuing through the main loop. In this case, the arguments are used as the brightnesses of each LED. The scale for brightness is 0-255 because each color is defined usingone byte,...