Arduino 精要
来自Jack's Lab
(版本间的差异)
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[[阻抗和阻抗匹配]] | [[阻抗和阻抗匹配]] | ||
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+ | [[晶振电路]] | ||
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2014年11月27日 (四) 18:44的版本
目录 |
1 总览
2 扩展
3 应用
4 精华
5 糖豆
5.1 float2str
String(NUMBER, SCALE); String(3.141592,5); # "3.14159"
5.2 Software Serial
#include <SoftwareSerial.h> SoftwareSerial mySerial(10, 11); // RX, TX void setup() { // set the data rate for the SoftwareSerial port mySerial.begin(4800); mySerial.println("Hello, world?"); } void loop() { if (mySerial.available()) mySerial.write(Serial.read()); }
5.3 AT CMD
SerialEvent() is called after a loop(), if there is serial data in the buffer.
String input_str = ""; // a string to hold incoming data boolean str_over = false; // whether the string is complete void setup() { Serial.begin(9600); input_str.reserve(200); // reserve 200 bytes for the inputString: } void loop() { if (str_over) { // Identify the CMD and processing input_str = ""; // clear the string buffer str_over = false; } } /* * SerialEvent occurs whenever a new data comes in the hardware serial RX. * This routine is run between each time loop() runs, so using delay inside * loop can delay response. Multiple bytes of data may be available. */ void serialEvent() { while (Serial.available()) { char in = (char)Serial.read(); input_str += in; if (in == '\n') { // read a line into string buffer str_over = true; } } }