EEPROM Clear : clear the bytes in the EEPROM. EEPROM清除:清除字 节的EEPROM。 EEPROM Read : read the EEPROM and send its values to the computer. EEPROM读:读EEPROM和计算机发 送其值。 EEPROM Write: stores values from an an
clear(); lcd.setCursor(0, 0); if (tagID == MasterTag) { lcd.print(" Access Granted!"); // You can write any code here like opening doors, switching on a relay, lighting up an LED, or anything else you can think of. } else { lcd.print(" Access Denied!"); } lcd....
fullPath += String(fileArray); // Complete the filepath string } else { // Not a sequence, solitary BMP file sprintf(fileArray, BMP_FORMAT, nextBMPindex); // Generate a serial filename fullPath += String(fileArray); // Complete the filepath string } myFile = arcada.open(fullPath....
engine.canvas.blt(0, 32); // Outputs canvas to OLED with an offset (x pixels, y pixels) engine.canvas.clear(); for (int i = 0; i < 8; i++) { if (data[i] > 31) engine.canvas.drawVLine(i * 4, 31 - (data[i] - 31), 31); // Draw to canvas data for upper-leftes...
array(数组) 数据类型转换 char() byte() int() word() long() float() 变量作用域&修饰符 变量作用域 static (静态变量) volatile (易变变量) const (不可改变变量) 辅助工具 sizeof() (sizeof运算符) ASCII码表 基本函数 数字I/O pinMode(pin, mode) digitalWrite(pin, value) digitalRead(pin) 模...
When passing an array to a function, normally the array size is passed as well, so the function can process the specific number of elements in the array. Otherwise, we would need to build this knowledge into the called function itself or, worse yet, place the array size in a global ...
37款传感器与执行器的提法,在网络上广泛流传,其实Arduino能够兼容的传感器模块肯定是不止这37种的。鉴于本人手头积累了一些传感器和执行器模块,依照实践出真知(一定要动手做)的理念,以学习和交流为目的,这里准备逐一动手尝试系列实验,不管成功(程序走通)与否,都会记录下来—小小的进步或是搞不掂的问题,希望能够抛砖引...
32、4示例代码/*updateonevalueinanarrayeachtimethroughaloop*/:intvalues10上Lirinti=0;I:voidsetup()I;voidloop()liIf««II:Iivaluesi=analogRead(O);i=(i+1)%10;/modulooperatorrollsovervariable提示:取模运算符不能用于浮点型数.比较运算符if(条件)and=,!=,<,>(比较运算符)if,用于和比较运算符...
maskBuffer = bytearray(96 * 88 // 8) # 叠加层 maskFrame = framebuf.FrameBuffer(maskBuffer, 96, 88, framebuf.MONO_HLSB) timer = Timer(-1) def load_bmp(file_path, frameBuf=None): with open(file_path, "rb") as file: file.seek(14) ...
如果JsonDocument顶节点是一个JsonArray,add方法会追加一个value到数组; 如果JsonDocument顶节点是一个JsonObject,add无效; 如果JsonDocument是一个空对象,add方法会把JsonDocument变成一个包含一个元素的数组,这是一个创建数组的方式;2.1.3 clear —— 清除JsonDocument并释放内存空间函数说明:...