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GPIO control.

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Bug fix.
This commit is contained in:
rdkartono
2024-11-14 10:23:50 +07:00
parent 10fad0e192
commit 0942c9936c
12 changed files with 340 additions and 104 deletions
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67
src/main/java/SBC/GPIO.java
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@@ -1,6 +1,7 @@
package SBC;
import com.sun.jna.Platform;
import org.jetbrains.annotations.NotNull;
import org.tinylog.Logger;
import java.nio.file.Files;
@@ -8,7 +9,7 @@ import java.nio.file.Path;
public class GPIO {
private static final Path gpioPath = Path.of("/sys/class/gpio");
public static final Path gpioPath = Path.of("/sys/class/gpio");
private static final Path gpioExportPath = Path.of("/sys/class/gpio/export");
private static final Path gpioUnexportPath = Path.of("/sys/class/gpio/unexport");
@@ -31,8 +32,8 @@ public class GPIO {
* @param pin GPIO pin number
* @return true if the pin is already exported
*/
public static boolean GpioPinExists(int pin){
Path pinPath = gpioPath.resolve("gpio"+pin);
public static boolean GpioPinExists(@NotNull RaspberryPi5BPins pin){
Path pinPath = gpioPath.resolve("gpio"+pin.gpionumber);
return pinPath.toFile().isDirectory();
}
@@ -41,15 +42,15 @@ public class GPIO {
* @param pin GPIO pin number
* @return true if the pin is successfully exported
*/
public static boolean ExportPin(int pin){
public static boolean ExportPin(@NotNull RaspberryPi5BPins pin){
try{
if (Files.isWritable(gpioExportPath)){
Files.write(gpioExportPath, String.valueOf(pin).getBytes());
Logger.info("Pin "+pin+" exported");
Files.write(gpioExportPath, String.valueOf(pin.gpionumber).getBytes());
Logger.info("Pin "+pin.pin+" exported");
return GpioPinExists(pin);
} else Logger.error("GPIO export path is not writable");
} catch (Exception e){
Logger.error("Failed to export pin: "+pin+", Message: "+e.getMessage());
Logger.error("Failed to export pin: "+pin.pin+", Message: "+e.getMessage());
}
return false;
}
@@ -59,14 +60,14 @@ public class GPIO {
* @param pin GPIO pin number
* @return true if the pin is successfully unexported
*/
public static boolean UnexportPin(int pin){
public static boolean UnexportPin(@NotNull RaspberryPi5BPins pin){
if (Files.isWritable(gpioUnexportPath)){
try{
Files.write(gpioUnexportPath, String.valueOf(pin).getBytes());
Logger.info("Pin "+pin+" unexported");
Files.write(gpioUnexportPath, String.valueOf(pin.gpionumber).getBytes());
Logger.info("Pin "+pin.pin+" unexported");
return true;
} catch (Exception e){
Logger.error("Failed to unexport pin: "+pin+", Message: "+e.getMessage());
Logger.error("Failed to unexport pin: "+pin.pin+", Message: "+e.getMessage());
}
} else Logger.error("GPIO unexport path is not writable");
@@ -78,17 +79,17 @@ public class GPIO {
* @param pin GPIO pin number
* @return "in" if the pin is input, "out" if the pin is output, "unknown" if the direction is unknown
*/
public static String GetPinDirection(int pin){
Path pinPath = gpioPath.resolve("gpio"+pin).resolve("direction");
public static String GetPinDirection(@NotNull RaspberryPi5BPins pin){
Path pinPath = gpioPath.resolve("gpio"+pin.gpionumber).resolve("direction");
if (pinPath.toFile().isFile()){
if (Files.isReadable(pinPath)){
try{
return Files.readString(pinPath).trim();
} catch (Exception e){
Logger.error("Failed to read pin direction: "+pin+", Message: "+e.getMessage());
Logger.error("Failed to read pin direction: "+pin.pin+", Message: "+e.getMessage());
}
} else Logger.error("Pin direction file is not readable: "+pin);
} else Logger.error("Pin direction file not found: "+pin);
} else Logger.error("Pin direction file is not readable: "+pin.pin);
} else Logger.error("Pin direction file not found: "+pin.pin);
return "unknown";
}
@@ -98,22 +99,22 @@ public class GPIO {
* @param direction "in" for input, "out" for output
* @return true if the direction is successfully set
*/
public static boolean SetPinDirection(int pin, String direction){
Path pinPath = gpioPath.resolve("gpio"+pin).resolve("direction");
public static boolean SetPinDirection(@NotNull RaspberryPi5BPins pin, String direction){
Path pinPath = gpioPath.resolve("gpio"+pin.gpionumber).resolve("direction");
if (pinPath.toFile().isFile()){
if (Files.isWritable(pinPath)){
direction = direction.trim().toLowerCase();
if ("in".equals(direction) || "out".equals(direction)){
try{
Files.write(pinPath, direction.getBytes());
Logger.info("Pin "+pin+" direction set to "+direction);
Logger.info("Pin "+pin.pin+" direction set to "+direction);
return true;
} catch (Exception e){
Logger.error("Failed to set pin direction: "+pin+", Message: "+e.getMessage());
Logger.error("Failed to set pin direction: "+pin.pin+", Message: "+e.getMessage());
}
} else Logger.error("Invalid direction: "+direction);
} else Logger.error("Pin direction file is not writable: "+pin);
} else Logger.error("Pin direction file not found: "+pin);
} else Logger.error("Pin direction file is not writable: "+pin.pin);
} else Logger.error("Pin direction file not found: "+pin.pin);
return false;
}
@@ -123,19 +124,19 @@ public class GPIO {
* @param isON true to set the pin value to 1, false to set the pin value to 0
* @return true if the value is successfully set
*/
public static boolean SetValue(int pin, boolean isON){
Path pinPath = gpioPath.resolve("gpio"+pin).resolve("value");
public static boolean SetValue(@NotNull RaspberryPi5BPins pin, boolean isON){
Path pinPath = gpioPath.resolve("gpio"+pin.gpionumber).resolve("value");
if (pinPath.toFile().isFile()){
if (Files.isWritable(pinPath)){
try{
Files.write(pinPath, isON?"1".getBytes():"0".getBytes());
Logger.info("Pin "+pin+" value set to "+(isON?"1":"0"));
Logger.info("Pin "+pin.pin+" value set to "+(isON?"1":"0"));
return true;
} catch (Exception e){
Logger.error("Failed to set pin value: "+pin+", Message: "+e.getMessage());
Logger.error("Failed to set pin value: "+pin.pin+", Message: "+e.getMessage());
}
} else Logger.error("Pin value file is not writable: "+pin);
} else Logger.error("Pin value file not found: "+pin);
} else Logger.error("Pin value file is not writable: "+pin.pin);
} else Logger.error("Pin value file not found: "+pin.pin);
return false;
}
@@ -144,17 +145,17 @@ public class GPIO {
* @param pin GPIO pin number
* @return "1" if the pin value is 1, "0" if the pin value is 0, "unknown" if the value is unknown
*/
public static String GetValue(int pin){
Path pinPath = gpioPath.resolve("gpio"+pin).resolve("value");
public static String GetValue(@NotNull RaspberryPi5BPins pin){
Path pinPath = gpioPath.resolve("gpio"+pin.gpionumber).resolve("value");
if (pinPath.toFile().isFile()){
if (Files.isReadable(pinPath)){
try{
return Files.readString(pinPath).trim();
} catch (Exception e){
Logger.error("Failed to read pin value: "+pin+", Message: "+e.getMessage());
Logger.error("Failed to read pin value: "+pin.pin+", Message: "+e.getMessage());
}
} else Logger.error("Pin value file is not readable: "+pin);
} else Logger.error("Pin value file not found: "+pin);
} else Logger.error("Pin value file is not readable: "+pin.pin);
} else Logger.error("Pin value file not found: "+pin.pin);
return "unknown";
}
}