logging: implement a way to set the logging levels at runtime

src/logging.rs

@@ -1,11 +1,13 @@
+#![allow(static_mut_refs)]
+
 use embassy_sync::blocking_mutex::{raw::CriticalSectionRawMutex, Mutex};
 use esp_println::println;
 use log::{LevelFilter, Metadata, Record};
-use static_cell::StaticCell;
 
 // Provides a threadsafe serial logger
 pub struct RenderbugLogger {
     lock: Mutex<CriticalSectionRawMutex, ()>,
+    current_level: LevelFilter,
     default_level: LevelFilter
 }
 
@@ -13,12 +15,14 @@ impl Default for RenderbugLogger {
     fn default() -> Self {
         Self {
             lock: Mutex::new(()),
+            current_level: LevelFilter::Info,
             default_level: LevelFilter::Info
         }
     }
 }
 
-static LOGGER: StaticCell<RenderbugLogger> = StaticCell::new();
+//static LOGGER: StaticCell<RenderbugLogger> = StaticCell::new();
+static mut LOGGER: Option<RenderbugLogger> = None;
 
 impl RenderbugLogger {
     pub fn init_logger() {
@@ -33,7 +37,8 @@ impl RenderbugLogger {
             _ => LevelFilter::Info
         };
 
-        let logger = LOGGER.init(RenderbugLogger { default_level, ..Default::default() });
+        unsafe { LOGGER.replace(RenderbugLogger { default_level, current_level: default_level, ..Default::default() }) };
+        let logger = unsafe { LOGGER.as_mut().unwrap() };
         unsafe {
             critical_section::with(|_| {
                 log::set_logger_racy(logger).ok();
@@ -41,6 +46,25 @@ impl RenderbugLogger {
             });
         };
     }
+
+    pub fn set_level(level: LevelFilter) {
+        unsafe {
+            critical_section::with(|_| {
+                log::set_max_level_racy(level);
+                LOGGER.as_mut().unwrap().current_level = level;
+            })
+        }
+    }
+
+    pub fn reset_level() {
+        unsafe {
+            critical_section::with(|_| {
+                let logger = LOGGER.as_mut().unwrap();
+                log::set_max_level_racy(logger.default_level);
+                logger.current_level = logger.default_level;
+            })
+        }
+    }
 }
 
 impl log::Log for RenderbugLogger {