这里面重点讲四个就可以了,第一个是EEPROM.length,第二个是EEPROM.write和EEPROM.read,三个是EEPROM.update,四个是EEPROM.get和EEPROM.put。 先看一下EEPROM.length:它的作用有点像是sizeof,不过它返回的值是芯片EEPROM的大小,比如ATMEGA328P: 返回值是1024,它的地址值也就是0,1
例子 void setup() { char str[] = "This is my string"; // create a string char out_str[40]; // output from string functions placed here int num; // general purpose integer Serial.begin(9600); // (1) print the string Serial.println(str); // (2) get the length of the string...
the function code requested, the message data and length of it,//plus a user-supplied token to identify the causing requestvoidhandleData(ModbusMessage response, uint32_t token) {//回调函数Serial.printf("Response: serverID=%d, FC=%d, Token=%08X, length=%d:...
of bytes to the I2C device and register @param[in] reg the register in the I2C device to write to @param[in] val pointer to the beginning of the data byte array @param[in] len the length (in bytes) of the data to write @return True if successful write operation. False otherwise....
Data:表示数据包,AdvData由若干个广播数据单元(即AD Structure)组成。AD Structure的结构=Length+AD Type+AD data。 Length:表示该AD Structure数据的总长度,即为AD Type与AD Data的长度和(即不含 Length字段本身的1字节)。 AD Type:表示该广播数据代表的含义,如设备名、UUID等。
15 16 17 18 19 20 21 22 $GPRMC,055430.00,A,2256.25353,N,11343.15605,E,2.440,177.00,080119,,,A*69 055430.00, <1> UTC 时间,hhmmss(时分秒)格式 A, <2> 定位状态,A=有效定位,V=无效定位) 2256.25353, <3>纬度ddmm.mmmm(度分)格式(前面的0也将被传输22°+56.25353 ...
@param {unsigned short} length * @return {unsigned char} */unsigned char dp_process(unsigned char dpid,const unsigned char value[], unsigned short length){ switch(dpid) { case DPID_SWITCH: led_state = my_device.mcu_get_dp_download_data(dpid, value, length); /* Get the valu...
IRDATA_FLAGS_EXTRA_INFO There is extra info not contained in address and data (e.g. Kaseikyo unknown vendor ID, or in decodedRawDataArray). IRDATA_FLAGS_WAS_OVERFLOW Too many marks and spaces for the specified RAW_BUFFER_LENGTH. To avoid endless flagging of overflow, irparams.rawlen is...
(data.length-1, maxNumberOfLabels) ; arrayCopy(data, 1, sensorLabels, 0, labelCount ); } else if ( data[0].equals("Data"))// check for data header { background(255); drawGrid(); fill(204); println(data.length); for ( int i=1; i <= labelCount && i < data.length-1; i...
问在Arduino IDE中将255以上的"String“转换为确切的"Integer”或"Long“类型ENstr := “123” // ...