implemented log levels

levels are:
0: no logs
1: errors only
2: errors and info logs (default)
3: debug logs

Author: micampe

src/homekit_debug.h

@@ -13,29 +13,55 @@ extern "C" {
 
 typedef unsigned char byte;
 
-//#define HOMEKIT_DEBUG
+#define HOMEKIT_NO_LOG 0
+#define HOMEKIT_LOG_ERROR 1
+#define HOMEKIT_LOG_INFO 2
+#define HOMEKIT_LOG_DEBUG 3
+
+#ifndef HOMEKIT_LOG_LEVEL
+#define HOMEKIT_LOG_LEVEL HOMEKIT_LOG_INFO
+#endif
 
 #define HOMEKIT_PRINTF XPGM_PRINTF
 
-#ifdef HOMEKIT_DEBUG
+#if HOMEKIT_LOG_LEVEL >= HOMEKIT_LOG_DEBUG
 
 #define DEBUG(message, ...)  HOMEKIT_PRINTF(">>> %s: " message "\n", __func__, ##__VA_ARGS__)
 static uint32_t start_time = 0;
 #define DEBUG_TIME_BEGIN()  start_time=millis();
 #define DEBUG_TIME_END(func_name)  HOMEKIT_PRINTF("### [%7d] %s took %6dms\n", millis(), func_name, (millis() - start_time));
+#define DEBUG_HEAP() DEBUG("Free heap: %d", system_get_free_heap_size());
 
 #else
 
 #define DEBUG(message, ...)
 #define DEBUG_TIME_BEGIN()
 #define DEBUG_TIME_END(func_name)
+#define DEBUG_HEAP()
 
 #endif
 
-#define INFO(message, ...) HOMEKIT_PRINTF(">>> [%7d] HomeKit: " message "\n", millis(), ##__VA_ARGS__)
+#if HOMEKIT_LOG_LEVEL >= HOMEKIT_LOG_ERROR
+
 #define ERROR(message, ...) HOMEKIT_PRINTF("!!! [%7d] HomeKit: " message "\n", millis(), ##__VA_ARGS__)
+
+#else
+
+#define ERROR(message, ...)
+
+#endif
+
+#if HOMEKIT_LOG_LEVEL >= HOMEKIT_LOG_INFO
+
+#define INFO(message, ...) HOMEKIT_PRINTF(">>> [%7d] HomeKit: " message "\n", millis(), ##__VA_ARGS__)
 #define INFO_HEAP() INFO("Free heap: %d", system_get_free_heap_size());
-#define DEBUG_HEAP() DEBUG("Free heap: %d", system_get_free_heap_size());
+
+#else
+
+#define INFO(message, ...)
+#define INFO_HEAP()
+
+#endif
 
 char *binary_to_string(const byte *data, size_t size);
 void print_binary(const char *prompt, const byte *data, size_t size);