c - 如何在arduino板上创建一种线程？

Question

我希望每秒从 GPS 接收器接收信息，但从传感器接收信息 - 每半秒......

我获取了tinyGPS的代码并添加了传感器代码:

#include <TinyGPS.h>

const int RightPin = A0;
const int FrontPin = A1;
const int LeftPin = A2;
int RightVal = 0;
int FrontVal = 0;
int LeftVal = 0;

TinyGPS gps;

void setup() {

  Serial.begin(115200);   //GPS DATA
  Serial1.begin(9600); //GPS
  Serial2.begin(9600); //BLUETOOTH

}

void loop() {
  RightVal = analogRead(RightPin);
  FrontVal = analogRead(FrontPin);
  LeftVal = analogRead(LeftPin);
  Serial1.print(RightVal);
  Serial1.print(", ");
  Serial1.print(FrontVal);
  Serial1.print(", ");
  Serial1.println(LeftVal);

  bool newdata = false;
  unsigned long start = millis();

  // Every second we print an update
  while (millis() - start < 1000)
  {
    if (feedgps())
      newdata = true;
  }
  gpsdump(gps);
}

非常感谢

Answer 1

我不确定这是否是您正在寻找的，但您可以通过使用中断来实现这一点。您可以使用计时器每 0.5 秒生成一次中断，然后每次读取传感器(每两次读取 GPS)。

我没有在 arduino 中完成此操作，而是在 C 中使用 AVR 微 Controller 完成此操作。网上肯定有很多文档。

来自this link您可以阅读:

attachInterrupt(function, period)
Calls a function at the specified interval in microseconds. Be careful about trying to execute too complicated of an interrupt at too high of a frequency, or the CPU may never enter the main loop and your program will 'lock up'. Note that you can optionally set the period with this function if you include a value in microseconds as the last parameter when you call it.