m:sk:mcu:arduino:serial
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m:sk:mcu:arduino:serial [2015/11/07 12:57] admin 创建 |
m:sk:mcu:arduino:serial [2015/12/06 19:47] (当前版本) admin 已恢复为旧版 (2015/11/19 16:55) |
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| ====== Arduino 串口通信 - UART通信 ====== | ====== Arduino 串口通信 - UART通信 ====== | ||
| + | 例子： | ||
| + | |||
| + | ---- | ||
| + | <code C> | ||
| + | #include <stdio.h> | ||
| + | |||
| + | String inputString = ""; // a string to hold incoming data | ||
| + | |||
| + | boolean stringComplete = false; // whether the string is complete | ||
| + | |||
| + | void setup() { | ||
| + | // initialize serial: | ||
| + | Serial.begin(9600); | ||
| + | // reserve 200 bytes for the inputString: | ||
| + | inputString.reserve(200); | ||
| + | } | ||
| + | |||
| + | void loop() { | ||
| + | // print the string when a newline arrives: | ||
| + | int num = 0; | ||
| + | if (stringComplete) { | ||
| + | Serial.println(inputString); | ||
| + | sscanf(inputString.c_str(), "R%d",&num); | ||
| + | Serial.println(num); | ||
| + | // clear the string: | ||
| + | inputString = ""; | ||
| + | stringComplete = false; | ||
| + | } | ||
| + | } | ||
| + | |||
| + | |||
| + | void serialEvent() { | ||
| + | while (Serial.available()) { | ||
| + | // get the new byte: | ||
| + | char inChar = (char)Serial.read(); | ||
| + | // add it to the inputString: | ||
| + | inputString += inChar; | ||
| + | // if the incoming character is a newline, set a flag | ||
| + | // so the main loop can do something about it: | ||
| + | if (inChar == '\n') { | ||
| + | stringComplete = true; | ||
| + | } | ||
| + | } | ||
| + | } | ||
| + | </code> | ||
| + | ---- | ||
| + | |||
| + | [[:sp|另一个例子]] | ||
· 最后更改: 2015/11/07 12:57