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-rw-r--r--libraries/Bridge/examples/ShellCommands/ShellCommands.ino53
1 files changed, 0 insertions, 53 deletions
diff --git a/libraries/Bridge/examples/ShellCommands/ShellCommands.ino b/libraries/Bridge/examples/ShellCommands/ShellCommands.ino
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--- a/libraries/Bridge/examples/ShellCommands/ShellCommands.ino
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-/*
- Running shell commands using Process class.
-
- This sketch demonstrate how to run linux shell commands
- using an Arduino Yún. It runs the wifiCheck script on the linino side
- of the Yun, then uses grep to get just the signal strength line.
- Then it uses parseInt() to read the wifi signal strength as an integer,
- and finally uses that number to fade an LED using analogWrite().
-
- The circuit:
- * Arduino Yun with LED connected to pin 9
-
- created 12 Jun 2013
- by Cristian Maglie
- modified 25 June 2013
- by Tom Igoe
-
- This example code is in the public domain.
-
- */
-
-#include <Process.h>
-
-void setup() {
- Bridge.begin(); // Initialize the Bridge
- Serial.begin(9600); // Initialize the Serial
-
- // Wait until a Serial Monitor is connected.
- while(!Serial);
-}
-
-void loop() {
- Process p;
- // This command line runs the WifiStatus script, (/usr/bin/pretty-wifi-info.lua), then
- // sends the result to the grep command to look for a line containing the word
- // "Signal:" the result is passed to this sketch:
- p.runShellCommand("/usr/bin/pretty-wifi-info.lua | grep Signal");
-
- // do nothing until the process finishes, so you get the whole output:
- while(p.running());
-
- // Read command output. runShellCommand() should have passed "Signal: xx&":
- while (p.available()) {
- int result = p.parseInt(); // look for an integer
- int signal = map(result, 0, 100, 0, 255); // map result from 0-100 range to 0-255
- analogWrite(9, signal); // set the brightness of LED on pin 9
- Serial.println(result); // print the number as well
- }
- delay(5000); // wait 5 seconds before you do it again
-}
-
-
-