#include <ArduinoJson.h>void loop(){ StaticJsonDocument<256> doc; doc["Temperature"] = 22; doc["Humidity"] = 68; doc["Light"] = 96; // Add an array JsonArray data = doc.createNestedArray("data"); data.add(48); data.add(2.3); char out[128]; int b =seriali...
}//Create request for//(Fill in your data here!)//- server ID = 1//- function code = 0x16 (write multiple registers)//- address to write = word 33ff//- data words to write = see below//- data bytes to write = see below//- token to match the response with the request.//u...
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....
val: a value to send as a single byte.str: a string to send as a series of bytes.buf: an array to send as a series of bytes.len: the number of bytes to be sent from the array. 由于内存中字节存放的顺序,或者说大端小端问题,实际运行上面代码后,你在串口工具中看到的字节是逆序的,也就...
a line bufferpushImage(int32_t x, int32_t y, int32_t w, int32_t h, uint8_t *data, uint8_t transp, bool bpp8) //plot 8 or 1 bit image or sprite with a transparent coloursetSwapBytes(bool swap) //Used by 16 bit pushImage() to swap byte order in coloursgetSwapBytes(...
address: the 7-bit address of the device to request bytes from quantity: the number of bytes to request stop : boolean. true will send a stop message after the request, releasing the bus. false will continually send a restart after the request, keeping the connection active. ...
char input[INPUT_SIZE + 1]; // array of type char (C-string) //read Serial until new line or buffer full or time out byte size = Serial.readBytesUntil('\n', input, INPUT_SIZE); // Add the final 0 to end the C-string
25.1.15 Serial.readBytesUntil() 25.1.16 Serial.setTimeout() 25.1.17 Serial.write() 25.1.18 Serial.SerialEvent() 25.2 Stream 二十六、 USB(仅适用于 Leonardo 和 Due) 26.1 Mouse(键盘) 26.2 Keyboard(鼠标)1 结构部分 1.1 setup() 一、结构 ...
// Set the characteristic's value to be the array of bytes that is actually a string. pRemoteCharacteristic->writeValue(newValue.c_str(), newValue.length()); } delay(1000); // Delay a second between loops. } // End of loop
/* Calculates the size of the free list */ int freeListSize() { struct __freelist* current; int total = 0; for (current = __flp; current; current = current->nx) { total += 2; /* Add two bytes for the memory block's header */ ...