first commit

main.c

@@ -0,0 +1,60 @@
+//This project turns on, off or toggle an LED
+#include<stdio.h>
+#include<stdlib.h>
+#include<string.h>
+#include<time.h>
+#define LED3_PATH "/sys/class/leds/beaglebone:green:usr3"
+#define bled "/brightness"
+#define tled "/trigger"
+#define en "/delay_on"
+#define ap "/delay_off"
+//Protypes:
+void writeLED(char fileName[], char value[]);
+void removeTrigger();
+//main:
+////////////////////////////////////////////////////////
+int main(int argc, char* argv[]){
+	printf("Starting app\n");
+	//writeLED(bled, "1");
+	//printf("Done");
+	//return 0;
+	//strcmp(argv[1], "on")==0;
+	//
+	if(strcmp(argv[1],"on")==0){
+		printf("encendiendo LED\n");
+		removeTrigger();
+		writeLED(bled,"1");
+	}
+	else if(strcmp(argv[1], "off")==0){
+	printf("apagando LED\n");
+	removeTrigger();
+	writeLED(bled,"0");
+	}
+	else if(strcmp(argv[1],"blink")==0){
+	printf("blink\n");
+	writeLED(tled,"timer");
+	writeLED("en","50");
+	writeLED("ap","50");
+	}
+	
+	else{
+	printf("comando invalido");
+	}
+	printf("programa finalizado");
+	return 0;
+}	
+
+////////////////////////////////////////////////////////
+void writeLED(char fileName[], char value[]){
+	FILE* fp;
+	char fullName[150];
+	sprintf(fullName, LED3_PATH "%s", fileName);
+	fp = fopen(fullName, "w+");
+	fprintf(fp, "%s", value);
+	fclose(fp);
+}
+
+void removeTrigger(){
+	writeLED(tled, "none");
+}	
+