led support configurable

src/counter.cfg

@@ -1,3 +1,5 @@
+led = "off"
+
 sinkServer = "sink.hottis.de"
 sinkPort = 20169
 

src/led.c

@@ -1,32 +1,48 @@
 #include <stdbool.h>
 #include <wiringPi.h>
+#include <libconfig.h>
+#include <stdbool.h>
+#include <strings.h>
 
 #include "led.h"
+#include "logging.h"
 
 
+const char LED_KEY[] = "led";
+const char DEFAULT_LED[] = "off";
+const char *ledsActiveStr;
+bool ledActive;
 
 const int GREEN_OUT = 20;
 const int RED_OUT = 21;
 const int BLUE_OUT = 26;
 
-void ledInit() {
-    pinMode(GREEN_OUT, OUTPUT);
-    digitalWrite(GREEN_OUT, 0);
+void ledInit(config_t *pCfg) {
+  if (! config_lookup_string(pCfg, LED_KEY, &ledsActiveStr)) {
+    ledsActiveStr = DEFAULT_LED;
+  }
+  ledsActive = (! strcasecmp(ledsActiveStr, "on")) || (! strcasecmp(ledsActiveStr, "true"));
+  logmsg(LOG_INFO, "CONFIG: ledsActive=%d, ledsActiveStr=%s\n", ledsActiveStr, ledsActive);
 
-    pinMode(RED_OUT, OUTPUT);
-    digitalWrite(RED_OUT, 0);
+  pinMode(GREEN_OUT, OUTPUT);
+  digitalWrite(GREEN_OUT, 0);
 
-    pinMode(BLUE_OUT, OUTPUT);
-    digitalWrite(BLUE_OUT, 0);
+  pinMode(RED_OUT, OUTPUT);
+  digitalWrite(RED_OUT, 0);
+
+  pinMode(BLUE_OUT, OUTPUT);
+  digitalWrite(BLUE_OUT, 0);
 }
 
 
 void led (tColor color, bool state) {
+  if (ledsActive) {
     if (color == E_RED) {
-        digitalWrite(RED_OUT, state ? 1 : 0);
+      digitalWrite(RED_OUT, state ? 1 : 0);
     } else if (color == E_BLUE) {
-        digitalWrite(BLUE_OUT, state ? 1 : 0);
+      digitalWrite(BLUE_OUT, state ? 1 : 0);
     } else if (color == E_GREEN) {
-        digitalWrite(GREEN_OUT, state ? 1 : 0);
+      digitalWrite(GREEN_OUT, state ? 1 : 0);
     }
+  }
 }

src/led.h

@@ -2,10 +2,11 @@
 #define _LED_H_
 
 #include <stdbool.h>
+#include <libconfig.h>
 
 typedef enum { E_RED, E_BLUE, E_GREEN } tColor;
 
-void ledInit();
+void ledInit(config_t *pCfg);
 void led(tColor color, bool state);
 
 #endif // _LED_H_