Question

我正在尝试将python脚本保存到板载linino RAM，但我无法让它工作。我正确编写python脚本文件吗？任何人都可以查看我的代码并告诉我我在哪里犯错吗？我基本上修改了arduino网站上的一个例子的代码，试图让这个工作。我只想写/保存到linino然后打印出串口的输出。提前谢谢！

#include <FileIO.h>

void setup() {
// Setup Bridge (needed every time we communicate with the Arduino Yún)
Bridge.begin();
// Initialize the Serial
Serial.begin(9600);

while(!Serial);  // wait for Serial port to connect.
Serial.println("File Write Script example\n\n");

// Setup File IO
FileSystem.begin();

// Upload script used to gain network statistics  
uploadScript();
}  

void loop() 
{
// Run stats script every 5 secs.
runScript();
Serial.println("Just ran script");
delay(5000);
}

// this function creates a file into the linux processor
void uploadScript() 
{
// Write our shell script in /tmp
// Using /tmp stores the script in RAM this way we can preserve 
// the limited amount of FLASH erase/write cycles
File script = FileSystem.open("/tmp/example.py", FILE_WRITE);
script.print("#!/usr/bin/python");
script.print("import urllib2");
script.print("import ast");
script.print("r = urllib2.urlopen('https://python.org')");
script.print("a = r.read()");
//script.print("y = ast.literal_eval(a)");
script.print("print a[:100]"); //i want to index something in the dictionary
script.close();  // close the file

// Make the script executable
Process chmod;
chmod.begin("chmod");      // chmod: change mode
chmod.addParameter("+x");  // x stays for executable
chmod.addParameter("/tmp/example.py");  // path to the file to make it executable
chmod.run();
}


// this function run the script and read the output data
void runScript() 
{
// Run the script and show results on the Serial
Process myscript;
myscript.begin("/tmp/example.py");
myscript.run();

String output = "";

// read the output of the script
while (myscript.available()) 
{
  output += (char)myscript.read();
}
// remove the blank spaces at the beginning and the ending of the string
output.trim();
Serial.println(output);
Serial.println("just rand"); //for debugging
Serial.flush();
}

Answer 1

当我在大约一年前第一次遇到这个问题时，我更像是一个菜鸟，显然要更容易SSH到Arduino并在vi中编写脚本并保存yun的linux端。我做这个并没有问题，让脚本运行良好。不要试图在arduino草图中写一个脚本到linux！欢呼声。

编写并将python脚本保存到arduino yun RAM

1 个答案: