cofnig stuff

src/counter.c

@@ -3,6 +3,7 @@
 #include <stdint.h>
 #include <stdio.h>
 #include <unistd.h>
+#include <libconfig.h>
 
 #include "LS7366R.h"
 #include "influx.h"
@@ -13,6 +14,8 @@ const int INTR_IN  = 19;
 const int SPI_CHAN = 0;
 const int SPI_SPEED = 1000000;
 
+config_t cfg;
+
 
 void isr() {
   static uint32_t lastCounter = 0;
@@ -36,6 +39,16 @@ void init() {
   pinMode(INTR_IN, INPUT);
 }
 
+void readConfig() {
+  config_init(&cfg);
+  if (! config_read_file(&cfg, "/opt/etc/counter.cfg")) {
+    fprintf(stderr, "failed to read config file: %s:%d - %s\n",
+            config_error_file(&cfg), config_error_line(&cfg),
+            config_error_text(&cfg));
+    config_destroy(&cfg);
+    exit(-1);
+  }
+}
 void start() {
   wiringPiISR(INTR_IN, INT_EDGE_RISING, isr);
 }
@@ -43,7 +56,7 @@ void start() {
 int main (void) {
   init();
   ls7366rInit(SPI_CHAN);
-  influxInit();
+  influxInit(&cfg);
   start();
 
   
@@ -54,4 +67,7 @@ int main (void) {
 //    printf("%f\n", f);
     influxAddFrequency(f);
   }
+
+  // will never be reached
+  config_destroy(&cfg);
 }