remove: eliminate file management and LittleFS-based filesystem, implement savegame management for JSON config slots with wear-leveling

Software/MainBoard/rust/src/fat_error.rs

@@ -16,28 +16,18 @@ use esp_hal::twai::EspTwaiError;
 use esp_radio::wifi::WifiError;
 use ina219::errors::{BusVoltageReadError, ShuntVoltageReadError};
 use lib_bms_protocol::BmsProtocolError;
-use littlefs2_core::PathError;
 use onewire::Error;
 use pca9535::ExpanderError;
 
 //All error superconstruct
 #[derive(Debug)]
 pub enum FatError {
-    BMSError {
-        error: String,
-    },
     OneWireError {
         error: Error<Infallible>,
     },
     String {
         error: String,
     },
-    LittleFSError {
-        error: littlefs2_core::Error,
-    },
-    PathError {
-        error: PathError,
-    },
     TryLockError {
         error: TryLockError,
     },
@@ -88,8 +78,6 @@ impl fmt::Display for FatError {
             }
             FatError::OneWireError { error } => write!(f, "OneWireError {error:?}"),
             FatError::String { error } => write!(f, "{error}"),
-            FatError::LittleFSError { error } => write!(f, "LittleFSError {error:?}"),
-            FatError::PathError { error } => write!(f, "PathError {error:?}"),
             FatError::TryLockError { error } => write!(f, "TryLockError {error:?}"),
             FatError::WifiError { error } => write!(f, "WifiError {error:?}"),
             FatError::SerdeError { error } => write!(f, "SerdeError {error:?}"),
@@ -108,7 +96,6 @@ impl fmt::Display for FatError {
                 write!(f, "CanBusError {error:?}")
             }
             FatError::SNTPError { error } => write!(f, "SNTPError {error:?}"),
-            FatError::BMSError { error } => write!(f, "BMSError, {error}"),
             FatError::OTAError => {
                 write!(f, "OTA missing partition")
             }
@@ -173,18 +160,6 @@ impl From<Error<Infallible>> for FatError {
         FatError::OneWireError { error }
     }
 }
-impl From<littlefs2_core::Error> for FatError {
-    fn from(value: littlefs2_core::Error) -> Self {
-        FatError::LittleFSError { error: value }
-    }
-}
-
-impl From<PathError> for FatError {
-    fn from(value: PathError) -> Self {
-        FatError::PathError { error: value }
-    }
-}
-
 impl From<TryLockError> for FatError {
     fn from(value: TryLockError) -> Self {
         FatError::TryLockError { error: value }