Merge pull request #36 from justinjessada/master

[matches/MCTX3420.git] / server / actuator.c

diff --git a/server/actuator.c b/server/actuator.c
index ff51732..2967c6c 100644 (file)
--- a/server/actuator.c
+++ b/server/actuator.c
@@ -147,7 +147,20 @@ void Actuator_SetValue(Actuator * a, double value)
        //TODO: Set actuator
        switch (a->id)
        {
-               case ACTUATOR_TEST0:
+               case ACTUATOR_TEST0:                    //LED actuator test code, should blink onboard LED next to Ethernet port
+                       FILE *LEDHandle = NULL;         //code reference: http://learnbuildshare.wordpress.com/2013/05/19/beaglebone-black-controlling-user-leds-using-c/
+                       char *LEDBrightness = "/sys/class/leds/beaglebone\:green\:usr0/brightness";
+                       if(value == 1) {
+                               if((LEDHandle = fopen(LEDBrightness, "r+")) != NULL) {
+                                       fwrite("1", sizeof(char), 1, LEDHandle);
+                                       fclose(LEDHandle);
+                               }
+                       else if(value == 0) {
+                               if((LEDHandle = fopen(LEDBrightness, "r+")) != NULL) {
+                                       fwrite("0", sizeof(char), 1, LEDHandle);
+                                       fclose(LEDHandle);
+                       }
+                       else perror("Pin value should be 1 or 0");
                        break;
                case ACTUATOR_TEST1:
                        break;