feat: disable debug logs on release versions

Author: filipton

Cargo.toml

@@ -56,6 +56,7 @@ esp32 = ["esp-backtrace/esp32", "esp-hal/esp32", "esp-println/esp32", "esp-wifi/
 esp32c3 = ["esp-backtrace/esp32c3", "esp-hal/esp32c3", "esp-println/esp32c3", "esp-wifi/esp32c3", "esp-hal-embassy/esp32c3", "esp-storage/esp32c3", "esp-hal-wifimanager/esp32c3", "esp-hal-ota/esp32c3", "dep:esp32c3", "dep:mfrc522-02"]
 gen_version = []
 bat_dev_lcd = []
+release_build = []
 
 [profile.dev]
 # Rust debug is too slow.

build.rs

@@ -25,6 +25,7 @@ fn main() {
     let src_crc = hasher.finalize();
 
     let version_str = if let Ok(rel) = std::env::var("RELEASE_BUILD") {
+        println!("cargo:rustc-cfg=feature=\"release_build\"");
         rel
     } else {
         let epoch = std::time::SystemTime::now()

src/utils/logger.rs

@@ -3,9 +3,14 @@ use alloc::string::String;
 use embassy_sync::{blocking_mutex::raw::CriticalSectionRawMutex, channel::Channel};
 
 const MAX_LOGS_SIZE: usize = 100;
-pub const FILTER_MAX: log::LevelFilter = log::LevelFilter::Debug;
 pub static LOGS_CHANNEL: Channel<CriticalSectionRawMutex, String, MAX_LOGS_SIZE> = Channel::new();
 
+#[cfg(feature = "release_build")]
+pub const FILTER_MAX: log::LevelFilter = log::LevelFilter::Info;
+
+#[cfg(not(feature = "release_build"))]
+pub const FILTER_MAX: log::LevelFilter = log::LevelFilter::Debug;
+
 pub struct FkmLogger;
 
 impl FkmLogger {