fix mppt to not self destruct, log output

rust/src/log/mod.rs

@@ -1,4 +1,5 @@
 use std::{collections::HashMap, sync::Mutex};
+use serde::Serialize;
 use strum_macros::IntoStaticStr; 
 
 use esp_idf_svc::systime::EspSystemTime;
@@ -17,6 +18,7 @@ static mut BUFFER:ConstGenericRingBuffer::<LogEntry, BUFFER_SIZE> = ConstGeneric
 static BUFFER_ACCESS: Lazy<Mutex<&mut ConstGenericRingBuffer::<LogEntry, BUFFER_SIZE>>> = Lazy::new(|| unsafe { Mutex::new(&mut BUFFER) });
 
 
+#[derive(Serialize, Debug, Clone)]
 pub struct LogEntry {
     pub timestamp: u64,
     pub message_id: u32,
@@ -52,6 +54,17 @@ fn limit_length <const LIMIT:usize> (input: &str, target: &mut heapless::String<
     }
 }
 
+pub fn get_log() -> Vec<LogEntry>{
+    let buffer = BUFFER_ACCESS.lock().unwrap();
+    let mut read_copy = Vec::new();
+    for entry in buffer.iter() {
+        let copy = entry.clone();
+        read_copy.push(copy);
+    }
+    drop(buffer);
+    return read_copy;
+}
+
 pub fn log(message_key: LogMessage, number_a: u32, number_b: u32, txt_short:&str, txt_long:&str){
     let mut txt_short_stack:heapless::String<TXT_SHORT_LENGTH> = heapless::String::new();
     let mut txt_long_stack:heapless::String<TXT_LONG_LENGTH> = heapless::String::new();
@@ -94,6 +107,8 @@ pub fn log(message_key: LogMessage, number_a: u32, number_b: u32, txt_short:&str
 }
 
 
+
+
 #[cfg(test)]
 mod tests {
     use super::*;

rust/src/webserver/webserver.rs

@@ -207,6 +207,13 @@ fn get_battery_state(
     anyhow::Ok(Some(battery_json))
 }
 
+fn get_log(
+    _request: &mut Request<&mut EspHttpConnection>,
+) -> Result<Option<std::string::String>, anyhow::Error> {
+    let output = crate::log::get_log();
+    anyhow::Ok(Some(serde_json::to_string(&output)?))
+}
+
 fn get_version_web(
     _request: &mut Request<&mut EspHttpConnection>,
 ) -> Result<Option<std::string::String>, anyhow::Error> {
@@ -354,6 +361,11 @@ pub fn httpd(reboot_now: Arc<AtomicBool>) -> Box<EspHttpServer<'static>> {
             handle_error_to500(request, get_version_web)
         })
         .unwrap();
+    server
+    .fn_handler("/log", Method::Get, |request| {
+        handle_error_to500(request, get_log)
+    })
+    .unwrap();
     server
         .fn_handler("/battery", Method::Get, |request| {
             handle_error_to500(request, get_battery_state)