Change logger to use critical and fatal instead of error

README.md

@@ -39,7 +39,8 @@ To use the logging system, include `log.h` in your source file, and use the foll
 LOG_DEBUG(TAG, fmt, ...)
 LOG_INFO(TAG, fmt, ...)
 LOG_WARN(TAG, fmt, ...)
-LOG_ERROR(TAG, fmt, ...)
+LOG_CRIT(TAG, fmt, ...)
+LOG_FATAL(TAG, fmt, ...)
 ```
 The same format specifiers as in `printf` can be used.
 
@@ -73,7 +74,13 @@ before you include `log.h`, you can define custom log levels by defining the fol
 
 ```c
 // Only log messages with level ERROR will be printed
-#define LOGGER_LEVEL_ERROR
+#define LOGGER_LEVEL_CRITICAL
+#include "log.h"
+```
+
+```c
+// Only log messages with level ERROR will be printed
+#define LOGGER_LEVEL_FATAL
 #include "log.h"
 ```
 
@@ -84,7 +91,7 @@ Default is `0`
 ### Log Output Format
 Each log entry is formatted to include the following information:
 
- - Log level ([Debug], [Info], [Warn], [Error])
+ - Log level ([Debug], [Info], [Warn], [Critical], [Fatal])
  - Timestamp (in milliseconds since boot)
  - Tag
  - The log message
@@ -106,7 +113,8 @@ int main(void) {
     LOG_DEBUG(TAG, "This message will not be printed");
     LOG_INFO(TAG, "This message will be printed");
     LOG_WARN(TAG, "This message will be printed");
-    LOG_ERROR(TAG, "This message will be printed");
+    LOG_CRIT(TAG, "This message will be printed");
+    LOG_FATAL(TAG, "This message will be printed");
     
     for (int i = 0; i < 3; i++) {
         LOG_INFO(TAG, "Iteration %d of %d", i, 3);
@@ -117,10 +125,11 @@ int main(void) {
 ```
 Result:
 ```
-[Info]    (2009) main: This message will be printed
-[Warning] (2026) main: This message will be printed
-[Error]   (2033) main: This message will be printed
-[Info]    (2040) main: Iteration 0 of 3
-[Info]    (2047) main: Iteration 1 of 3
-[Info]    (2054) main: Iteration 2 of 3
+[Info]     (2009) main: This message will be printed
+[Warning]  (2026) main: This message will be printed
+[CRITICAL] (2033) main: This message will be printed
+[FATAL]    (2040) main: This message will be printed
+[Info]     (2040) main: Iteration 0 of 3
+[Info]     (2047) main: Iteration 1 of 3
+[Info]     (2054) main: Iteration 2 of 3
 ```