simulation: rewrite the storage and simulation stack

src/bin/main.rs

@@ -51,6 +51,10 @@ fn gpio_interrupt_handler() {
     INTERRUPTS.try_get().unwrap().process_interrupts();
 }
 
+static MOTION_BUS: ConstStaticCell<Channel<CriticalSectionRawMutex,Measurement,5> > = ConstStaticCell::new(Channel::new());
+static RECORDING_BUS: ConstStaticCell<PubSubChannel<CriticalSectionRawMutex,Measurement,10, 4, 1> > = ConstStaticCell::new(PubSubChannel::new());
+static PREDICTIONS: ConstStaticCell<PubSubChannel<NoopRawMutex, Prediction, 30, 7, 1>> = ConstStaticCell::new(PubSubChannel::new());
+
 #[esp_rtos::main]
 async fn main(spawner: Spawner) {
     // If we aren't using the second CPU, we can use the bootloader space for the heap instead
@@ -72,11 +76,8 @@ async fn main(spawner: Spawner) {
     esp_rtos::start(sys_timer.alarm0);
     info!("Embassy initialized!");
 
-    static MOTION_BUS: StaticCell<Channel<CriticalSectionRawMutex,Measurement,5> > = StaticCell::new();
+    let motion_bus = MOTION_BUS.take();
-    let motion_bus = MOTION_BUS.init_with(|| { Channel::new() });
+    let recording_bus = RECORDING_BUS.take();
-
-    static RECORDING_BUS: StaticCell<PubSubChannel<CriticalSectionRawMutex,Measurement,1, 2, 1> > = StaticCell::new();
-    let recording_bus = RECORDING_BUS.init_with(|| { PubSubChannel::new() });
 
     info!("Setting up rendering pipeline");
     let mut surfaces = UiSurfacePool::default();
@@ -160,32 +161,6 @@ async fn main(spawner: Spawner) {
         spawner.must_spawn(renderbug_bike::tasks::oled_render::oled_render(output, oled_surfaces, oled_uniforms));
     }
 
-    let mut storage = renderbug_bike::storage::SharedFlash::new(esp_storage::FlashStorage::new());
-    let mut partition_buf = [8; 1024];
-    let partitions = esp_bootloader_esp_idf::partitions::read_partition_table(&mut storage, &mut partition_buf).unwrap();
-
-    #[cfg(feature="simulation")]
-    {
-        use renderbug_bike::tasks::simulation::SimDataTable;
-        for sim_data in SimDataTable::open(storage, partitions).expect("Could not find sim data!") {
-            let srcid = sim_data.srcid();
-            info!("Found simulation data for {srcid:?}");
-            if spawner.spawn(renderbug_bike::tasks::simulation::simulation_task(sim_data, motion_bus.dyn_sender())).is_err() {
-                error!("Unable to spawn simulation task for {srcid:?}! Increase the task pool size.");
-            }
-        }
-    }
-
-    #[cfg(not(feature="simulation"))]
-    {
-        use renderbug_bike::storage::SimDataRecorder;
-
-        let recorder = SimDataRecorder::open(storage, partitions).expect("Unable to open sim data partition for writing");
-        //spawner.spawn(record_telemetry(recording_bus.dyn_receiver(), recorder)).unwrap();
-    }
-
-    spawner.spawn(print_sensor_readings(recording_bus.dyn_subscriber().unwrap())).unwrap();
-
     #[cfg(feature="radio")]
     let (wifi, network_device, ble) = {
         info!("Configuring wifi");
@@ -211,9 +186,7 @@ async fn main(spawner: Spawner) {
 
     let core2_main = |spawner: Spawner| {
         info!("Starting application tasks");
-
+        let predictions = PREDICTIONS.take();
-        static PREDICTIONS: StaticCell<PubSubChannel<NoopRawMutex, Prediction, 15, 6, 1>> = StaticCell::new();
-        let predictions = PREDICTIONS.init(PubSubChannel::new());
 
         #[cfg(not(feature="demo"))]
         {
@@ -251,24 +224,72 @@ async fn main(spawner: Spawner) {
             info!("Starting connectivity task");
             spawner.must_spawn(renderbug_bike::tasks::wifi::wifi_connect_task(wifi, motion_bus.dyn_sender()));
 
+            info!("Starting location sampler");
+            static SAMPLER: ConstStaticCell<Watch<NoopRawMutex, Prediction, 1>> = ConstStaticCell::new(Watch::new());
+            let sampler = SAMPLER.take();
+            spawner.must_spawn(renderbug_bike::tasks::wifi::location_sampler(predictions.dyn_subscriber().unwrap(), sampler.dyn_sender()));
+
             info!("Launching HTTP telemetry");
-            spawner.must_spawn(renderbug_bike::tasks::wifi::http_telemetry_task(predictions.dyn_subscriber().unwrap(), stack, motion_bus.dyn_sender()));
+            spawner.must_spawn(renderbug_bike::tasks::wifi::http_telemetry_task(sampler.dyn_receiver().unwrap(), stack, motion_bus.dyn_sender()));
 
             info!("Starting BLE services");
             spawner.must_spawn(renderbug_bike::tasks::ble::ble_task(ble, predictions.dyn_subscriber().unwrap(), spawner));
         }
 
-        #[cfg(feature="dual-core")]
+        spawner.must_spawn(print_sensor_status(predictions.dyn_subscriber().unwrap()));
+
+        let mut storage = SharedFlash::new(esp_storage::FlashStorage::new(peripherals.FLASH).multicore_auto_park());
+        let mut partition_buf = [8; 1024];
+        let partitions = esp_bootloader_esp_idf::partitions::read_partition_table(&mut storage, &mut partition_buf).unwrap();
+
+        #[cfg(any(feature="flash-recording", feature="simulation"))]
         {
-            info!("Launching core 2 watchdog");
+            use renderbug_bike::tasks::simulation::{SimDataStream, SimDataTable};
-            let timer1 = TimerGroup::new(peripherals.TIMG1);
+            let sim_partition = SimDataTable::find_partition(storage, partitions).expect("Could not find sim data partition!");
-            let mut ui_wdt = timer1.wdt;
+            info!("Got partition: {sim_partition:?}");
-            ui_wdt.set_timeout(esp_hal::timer::timg::MwdtStage::Stage0, esp_hal::time::Duration::from_secs(60));
+            let mut sim_table = match SimDataTable::open(sim_partition.clone()) {
-            ui_wdt.enable();
+                Ok(table) => table,
-            spawner.must_spawn(wdt_task(ui_wdt));
+                Err(SimDataError::StreamIndexMissing) => {
+                    info!("Sim data partition not formatted, creating new stream table with {sim_partition:?}");
+                    SimDataTable::create(sim_partition).expect("Unable to create sim data stream table in partition!")
+                },
+                Err(e) => panic!("Error opening sim data stream table: {e:?}")
+            };
+
+            loop {
+                match sim_table.next() {
+                    Some((header, reader)) => {
+                        let srcid = header.id;
+                        info!("Found simulation data for {srcid:?} at {:#x}", reader.abs_start());
+
+                        let stream = SimDataStream::open(reader, srcid);
+
+                        if cfg!(feature="simulation") {
+                            if spawner.spawn(renderbug_bike::tasks::simulation::simulation_task(stream, motion_bus.dyn_sender())).is_err() {
+                                error!("Unable to spawn simulation task for {srcid:?}! Increase the task pool size.");
+                            }
+                        } else if cfg!(feature="flash-recording") && srcid == StreamType::Bundle {
+                            info!("Continuing recording stream");
+                            spawner.spawn(record_telemetry(recording_bus.dyn_subscriber().unwrap(), stream, motion_bus.dyn_sender())).unwrap();
+                            break;
+                        }
+                    },
+                    None if cfg!(feature="flash-recording") => {
+                        // If we already found a recording stream, we break; out of the loop above
+                        let reader = sim_table.append_new_stream(StreamType::Bundle).expect("Unable to create a new recording stream in the sim data partition! Is there enough free space?");
+                        warn!("Starting new recording stream at {:#x}", reader.abs_start());
+                        let recorder = SimDataStream::create(reader, StreamType::Bundle);
+                        spawner.spawn(record_telemetry(recording_bus.dyn_subscriber().unwrap(), recorder, motion_bus.dyn_sender())).unwrap();
+                        break;
+                    },
+                    _ => ()
+                }
+            }
         }
 
-        spawner.must_spawn(print_sensor_status(predictions.dyn_subscriber().unwrap()));
+        spawner.must_spawn(wdt_task(rtc, predictions.dyn_subscriber().unwrap(), oled_controls, display_controls));
+
+        //info!("Final memory stats: {}", esp_alloc::HEAP.stats());
 
         info!("Ready to rock and roll in {}ms", Instant::now().as_millis());
     };
@@ -316,9 +337,17 @@ async fn wdt_task(mut wdt: Wdt<esp_hal::peripherals::TIMG1<'static>>) {
 }
 
 #[embassy_executor::task]
-async fn record_telemetry(firehose: DynamicReceiver<'static, Measurement>, mut storage: SimDataRecorder<StorageRange<SharedFlash<FlashStorage>>>) {
+async fn record_telemetry(mut firehose: DynSubscriber<'static, Measurement>, mut storage: SimDataStream<StorageRange<SharedFlash<FlashStorage<'static>>>>, motion: DynamicSender<'static, Measurement>) {
+    let mut skipped_events = 0;
+    while let Ok(Some((_, evt))) = storage.read_next() {
+        trace!("Skipping event {evt:?}");
+        skipped_events += 1;
+    }
+    info!("Skipped {} events to catch up to the end of the recording stream", skipped_events);
+    motion.send(Measurement::SensorHardwareStatus(SensorSource::FlashRecording, SensorState::Online)).await;
+    storage.write_next(AnnotationReading { buf: *b"Telemetry recording started     " }).unwrap();
     loop {
-        match firehose.receive().await {
+        match firehose.next_message_pure().await {
             Measurement::IMU { accel, gyro } => {
                 let reading = IMUReading {
                     accel_x: accel.x as f64,
@@ -328,24 +357,28 @@ async fn record_telemetry(firehose: DynamicReceiver<'static, Measurement>, mut s
                     gyro_y: gyro.y as f64,
                     gyro_z: gyro.z as f64
                 };
-                storage.write_next(reading).unwrap();
+                //storage.write_next(reading).unwrap();
-                info!("Wrote IMU to flash");
+                trace!("Wrote IMU to flash");
             },
-            _ => ()
+            Measurement::GPS(Some(pos)) => {
+                storage.write_next(GPSReading {
+                    lat: pos.x,
+                    lon: pos.y,
+                }).unwrap();
+                trace!("Wrote GPS to flash");
+            },
+            Measurement::SensorHardwareStatus(sensor, status) => {
+                let annotation = alloc::format!("{:?}={:?}", sensor, status);
+                let mut buf = [0; 32];
+                let bytes = annotation.as_bytes();
+                let copy_len = bytes.len().min(buf.len());
+                buf[..copy_len].copy_from_slice(&bytes[..copy_len]);
+                if copy_len < buf.len() {
+                    buf[copy_len..].fill(b' ');
                 }
+                storage.write_next(AnnotationReading { buf }).unwrap();
+                trace!("Wrote sensor status update to flash");
             }
-}
-
-#[embassy_executor::task]
-async fn print_sensor_readings(mut events: DynSubscriber<'static, Measurement>) {
-    loop {
-        match events.next_message_pure().await {
-            Measurement::IMU { accel, gyro } => {
-                esp_println::println!("accel=({},{},{}) gyro=({},{},{})", accel.x, accel.y, accel.z, gyro.x, gyro.y, gyro.z);
-            },
-            Measurement::GPS(gps) => {
-                esp_println::println!("gps={gps:?}");
-            },
             _ => ()
         }
     }

src/bin/playback.rs

@@ -0,0 +1,59 @@
+#![no_std]
+#![no_main]
+
+use embassy_executor::Spawner;
+use esp_hal::clock::CpuClock;
+use esp_hal::timer::systimer::SystemTimer;
+use log::*;
+use esp_backtrace as _;
+
+use renderbug_bike::logging::RenderbugLogger;
+use renderbug_bike::tasks::simulation::{SimDataStream, SimDataTable};
+use renderbug_bike::simdata::*;
+
+esp_bootloader_esp_idf::esp_app_desc!();
+
+#[esp_rtos::main]
+async fn main(spawner: Spawner) {
+
+    esp_alloc::heap_allocator!(size: 100000);
+
+    RenderbugLogger::init_logger();
+
+    let config = esp_hal::Config::default().with_cpu_clock(CpuClock::max());
+    let peripherals = esp_hal::init(config);
+    let sys_timer = SystemTimer::new(peripherals.SYSTIMER);
+    esp_rtos::start(sys_timer.alarm0);
+
+    let mut storage = renderbug_bike::storage::SharedFlash::new(esp_storage::FlashStorage::new(peripherals.FLASH).multicore_auto_park());
+    let mut partition_buf = [8; 1024];
+    let partitions = esp_bootloader_esp_idf::partitions::read_partition_table(&mut storage, &mut partition_buf).unwrap();
+
+    let sim_partition = SimDataTable::find_partition(storage, partitions).expect("Could not find sim data partition!");
+    info!("Got partition: {sim_partition:?}");
+    let sim_table = SimDataTable::open(sim_partition).expect("Sim data partition not found");
+
+    for (header, reader) in sim_table {
+        info!("Found stream {header:?}");
+        if header.id == StreamType::Bundle {
+            let mut stream = SimDataStream::open(reader, header.id);
+            let mut timestamp = 0;
+            loop {
+                match stream.read_next() {
+                    Ok(Some((timecode, next_evt))) => {
+                        timestamp += timecode.as_millis();
+                        esp_println::println!("{timestamp} {next_evt:?}");
+                    },
+                    Ok(None) => {
+                        warn!("End of simulation data stream");
+                        break
+                    },
+                    Err(err) => {
+                        warn!("Error during sensor stream: {err:?}");
+                        break
+                    }
+                }
+            }
+        }
+    }
+}

src/bin/reset.rs

@@ -0,0 +1,36 @@
+#![no_std]
+#![no_main]
+
+use embassy_executor::Spawner;
+use esp_hal::clock::CpuClock;
+use esp_hal::timer::systimer::SystemTimer;
+use log::*;
+use esp_backtrace as _;
+
+use renderbug_bike::logging::RenderbugLogger;
+use renderbug_bike::tasks::simulation::{SimDataStream, SimDataTable};
+use renderbug_bike::simdata::*;
+
+esp_bootloader_esp_idf::esp_app_desc!();
+
+#[esp_rtos::main]
+async fn main(spawner: Spawner) {
+
+    esp_alloc::heap_allocator!(size: 100000);
+
+    RenderbugLogger::init_logger();
+
+    let config = esp_hal::Config::default().with_cpu_clock(CpuClock::max());
+    let peripherals = esp_hal::init(config);
+    let sys_timer = SystemTimer::new(peripherals.SYSTIMER);
+    esp_rtos::start(sys_timer.alarm0);
+
+    let mut storage = renderbug_bike::storage::SharedFlash::new(esp_storage::FlashStorage::new(peripherals.FLASH));
+    let mut partition_buf = [8; 1024];
+    let partitions = esp_bootloader_esp_idf::partitions::read_partition_table(&mut storage, &mut partition_buf).unwrap();
+
+    let sim_partition = SimDataTable::find_partition(storage, partitions).expect("Could not find sim data partition!");
+    info!("Got partition: {sim_partition:?}");
+    SimDataTable::create(sim_partition).expect("Could not write empty sim partition");
+    error!("Overwrote sim data partition with a blank stream table");
+}

src/events.rs

@@ -47,7 +47,7 @@ pub enum Measurement {
 
     // Simulation metadata updates
     SimulationProgress(SensorSource, Duration, Fract8),
-    Annotation
+    Annotation([u8; 32])
 }
 
 #[derive(Default, Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord)]
@@ -81,6 +81,9 @@ pub enum SensorSource {
     // Connectivity related
     Wifi,
 
+    // Data processing/logging
+    FlashRecording,
+
     // Fusion outputs
     MotionFrame,
     Location,

src/storage.rs

@@ -1,13 +1,14 @@
 use core::{cell::RefCell, fmt::Formatter};
 
 use alloc::rc::Rc;
+use embedded_io::{ErrorKind, ErrorType, Read, Write};
 use embedded_storage::{ReadStorage, Storage};
 use esp_bootloader_esp_idf::partitions::PartitionTable;
 use esp_hal::time::Instant;
 use log::*;
 use rmp::{decode::{RmpRead, RmpReadErr}, encode::{RmpWrite, RmpWriteErr, ValueWriteError}};
 
-use crate::simdata::{BundleEventHeader, EventRecord, RmpData, SimDataError, StreamEvent, StreamHeader, StreamIndex, StreamType};
+use crate::{simdata::{BundleEventHeader, EventRecord, EventStreamHeader, RmpData, SimDataError, StreamEvent, StreamHeader, StreamIndex, StreamType}, tasks::simulation::Checkpoint};
 
 #[derive(Debug)]
 pub struct SharedFlash<S> {
@@ -62,12 +63,98 @@ impl<E> core::fmt::Display for StorageRangeError<E> {
     }
 }
 
-#[derive(Debug)]
+#[derive(Debug, Clone)]
 pub struct StorageRange<S> {
     storage: S,
     start: usize,
     end: usize,
-    offset: usize
+    offset: usize,
+    reset_pos: usize
+}
+
+impl<S> Checkpoint for StorageRange<S> {
+    fn checkpoint(&mut self) {
+        self.reset_pos = self.offset;
+    }
+
+    fn rollback(&mut self) {
+        self.offset = self.reset_pos;
+    }
+}
+
+impl<S> StorageRange<S> {
+    pub fn inner(&self) -> &S {
+        &self.storage
+    }
+
+    pub fn inner_mut(&mut self) -> &mut S {
+        &mut self.storage
+    }
+
+    pub fn abs_start(&self) -> usize {
+        self.start
+    }
+
+    pub fn abs_end(&self) -> usize {
+        self.end
+    }
+}
+
+impl<E: core::fmt::Debug> embedded_io::Error for StorageRangeError<E> {
+    fn kind(&self) -> embedded_io::ErrorKind {
+        ErrorKind::Other
+    }
+}
+
+impl<S: ReadStorage<Error = E>, E: core::fmt::Debug> ErrorType for StorageRange<S> {
+    type Error = StorageRangeError<E>;
+}
+
+impl<S: Storage<Error = E> + ReadStorage<Error = E>, E: core::fmt::Debug> Write for StorageRange<S> {
+    fn write(&mut self, buf: &[u8]) -> Result<usize, Self::Error> {
+        let pos = self.start + self.offset;
+        trace!("write {:#02x}:{:#02x} -> {:#02x}:{:#02x}", self.start, self.end, pos, pos + buf.len());
+        if pos > self.end {
+            Err(StorageRangeError::OutOfData)
+        } else {
+            assert!(pos + buf.len() <= self.end);
+            match self.storage.write(pos as u32, buf) {
+                Ok(_) => {
+                    self.offset += buf.len();
+                    Ok(buf.len())
+                },
+                Err(err) => Err(StorageRangeError::Storage(err))
+            }
+        }
+    }
+
+    fn flush(&mut self) -> Result<(), Self::Error> {
+        Ok(())
+    }
+}
+
+impl<S: ReadStorage<Error = E>, E: core::fmt::Debug> Read for StorageRange<S> {
+    fn read(&mut self, buf: &mut [u8]) -> Result<usize, Self::Error> {
+        let pos = self.start + self.offset;
+        trace!("read_exact_buf {:#02x}:{:#02x} -> {:#02x}:{:#02x}", self.start, self.end, pos, pos + buf.len());
+        if pos > self.end {
+            Err(StorageRangeError::OutOfData)
+        } else {
+            let remaining = self.end - pos;
+            let max_read = buf.len().min(remaining);
+            if max_read == 0 {
+                return Err(StorageRangeError::OutOfData)
+            }
+            assert!(pos + buf.len() <= self.end);
+            match self.storage.read(pos as u32, &mut buf[..max_read]) {
+                Ok(_) => {
+                    self.offset += max_read;
+                    Ok(max_read)
+                },
+                Err(err) => Err(StorageRangeError::Storage(err))
+            }
+        }
+    }
 }
 
 impl<S: ReadStorage> StorageRange<S> {
@@ -77,7 +164,8 @@ impl<S: ReadStorage> StorageRange<S> {
             storage,
             start,
             end,
-            offset: 0
+            offset: 0,
+            reset_pos: 0
         }
     }
 
@@ -98,6 +186,15 @@ impl<S: ReadStorage> StorageRange<S> {
         }
     }
 
+    pub fn seek_abs(&mut self, pos: usize) -> Result<(), StorageRangeError<S::Error>> {
+        self.offset = pos;
+        if self.offset > self.end {
+            Err(StorageRangeError::OutOfData)
+        } else {
+            Ok(())
+        }
+    }
+
     pub fn subset(&self, size: usize) -> Result<Self, StorageRangeError<S::Error>> where S: Clone + core::fmt::Debug {
         trace!("subset {:#02x}:{:#02x} -> {:#02x}:{:#02x}", self.start, self.end, self.start + self.offset, self.start + self.offset + size);
         if self.start + self.offset + size > self.end {
@@ -107,7 +204,8 @@ impl<S: ReadStorage> StorageRange<S> {
                 storage: self.storage.clone(),
                 start: self.offset + self.start,
                 end: self.start + self.offset + size,
-                offset: 0
+                offset: 0,
+                reset_pos: 0
             })
         }
     }
@@ -153,50 +251,3 @@ impl<S: Storage> RmpWrite for StorageRange<S> where S::Error: core::fmt::Debug +
         }
     }
 }
-
-pub struct SimDataRecorder<S> {
-    storage: S,
-    last_stamp: Instant
-}
-
-impl<S> SimDataRecorder<S> {
-    pub fn new(storage: S) -> Self {
-        Self {
-            storage,
-            last_stamp: Instant::now()
-        }
-    }
-
-    pub fn open(storage: S, partitions: PartitionTable<'_>) -> Result<SimDataRecorder<StorageRange<S>>, SimDataError<ValueWriteError<StorageRangeError<<S as ReadStorage>::Error>>>> where S: Storage, <S as ReadStorage>::Error: core::fmt::Debug + 'static {
-        let partition_type = esp_bootloader_esp_idf::partitions::PartitionType::Data(
-                esp_bootloader_esp_idf::partitions::DataPartitionSubType::Undefined,
-        );
-        info!("Searching for sim data partition");
-        let data_partition = partitions.iter().find(|partition| {
-            partition.partition_type() == partition_type && partition.label_as_str() == "sim"
-        }).ok_or(SimDataError::PartitionNotFound)?;
-
-        let start = data_partition.offset() as usize;
-        let end = data_partition.len() as usize + start;
-        let mut writer = StorageRange::new(storage, start, end);
-        warn!("Writing new simulation data at {start:#02x}:{end:#02x}");
-        StreamIndex { count: 1 }.write_rmp(&mut writer)?;
-        StreamHeader { id: StreamType::Bundle, size: 0 }.write_rmp(&mut writer)?;
-        Ok(SimDataRecorder {
-            storage: writer,
-            last_stamp: Instant::now()
-        })
-    }
-
-    pub fn write_next<T: EventRecord>(&mut self, event: T) -> Result<(), SimDataError<ValueWriteError<S::Error>>> where S: RmpWrite {
-        BundleEventHeader { id: T::stream_id() }.write_rmp(&mut self.storage)?;
-        let now = Instant::now();
-        let event = StreamEvent {
-            data: event,
-            timecode: (now - self.last_stamp).as_millis() as f64 / 1000.0
-        };
-        event.write_rmp(&mut self.storage)?;
-        self.last_stamp = now;
-        Ok(())
-    }
-}

src/tasks/mod.rs

@@ -5,7 +5,6 @@ pub mod gps;
 pub mod wifi;
 #[cfg(feature="radio")]
 pub mod ble;
-#[cfg(feature="simulation")]
 pub mod simulation;
 #[cfg(feature="demo")]
 pub mod demo;

src/tasks/motion.rs

@@ -28,14 +28,16 @@ pub async fn motion_task(src: DynamicReceiver<'static, Measurement>, prediction_
             },
             // FIXME: This needs harmonized with the automatic data timeout from above, somehow?
             Measurement::SensorHardwareStatus(source, state) => {
-                warn!("Sensor {source:?} reports {state:?}!");
+                debug!("Sensor {source:?} reports {state:?}!");
                 prediction_sink.publish(Prediction::SensorStatus(source, state)).with_timeout(TIMEOUT).await.expect("Could not update sensor status in time. Is the prediction bus stalled?");
             },
             Measurement::ExternalPower(mw) => {
                 info!("Got external power change to {mw:?}");
             },
             Measurement::SimulationProgress(source, duration, pct) => debug!("{source:?} simulation time: {} {} / 255", duration.as_secs(), pct),
-            Measurement::Annotation => ()
+            Measurement::Annotation(msg) => {
+                info!("Annotation: {}", str::from_utf8(&msg).unwrap_or("<non-utf8-data>"));
+            }
         }
         if recording_sink.try_publish(next_measurement).is_err() {
             warn!("Could not publish measurement to recording bus. Is the recording bus stalled?");

src/tasks/sd_card.rs

@@ -72,7 +72,7 @@ pub async fn sdcard_task(
         let stream = rootfs.open_file_in_dir("renderbug-sensors.rmp",Mode::ReadWriteCreateOrTruncate).unwrap();
         let rmp_stream = EmbeddedRmp(stream);
 
-        let mut recorder = SimDataRecorder::new(EmbeddedRmp(rmp_stream));
+        /*let mut recorder = SimDataStream::open(rmp_stream, StreamType::Bundle);
 
         loop {
             // FIXME: THis chunk could really go into an impl From<Measurement> for EventRecord
@@ -86,17 +86,18 @@ pub async fn sdcard_task(
                         gyro_y: gyro.y as f64,
                         gyro_z: gyro.z as f64
                     };
-                    if recorder.write_next(reading).is_err() {
+                    /*if recorder.write_next(reading).is_err() {
                         error!("Failed to write IMU reading to SD card");
                         break;
-                    }
+                    }*/
                     info!("Wrote IMU to SD card");
                 },
                 _ => ()
             }
         }
 
-        drop(recorder);
+        drop(recorder);*/
+        drop(rmp_stream);
         drop(rootfs);
         drop(vol);
 
@@ -104,13 +105,15 @@ pub async fn sdcard_task(
     }
 }
 
-struct EmbeddedRmp<W: embedded_io::Write>(W);
+struct EmbeddedRmp<W>(W);
 
 #[derive(Debug)]
 struct EmbeddedRmpError<T>(T);
 
 impl<T: core::fmt::Debug + 'static> RmpWriteErr for EmbeddedRmpError<T> {
 }
+impl<T: core::fmt::Debug + 'static> RmpReadErr for EmbeddedRmpError<T> {
+}
 
 impl<T> core::fmt::Display for EmbeddedRmpError<T> where T: core::fmt::Debug {
     fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
@@ -127,6 +130,15 @@ impl<W: embedded_io::Write> RmpWrite for EmbeddedRmp<W> where W::Error: core::fm
     }
 }
 
+impl<W: embedded_io::Read> RmpRead for EmbeddedRmp<W> where W::Error: core::fmt::Debug + 'static {
+    type Error = EmbeddedRmpError<ReadExactError<W::Error>>;
+
+    fn read_exact_buf(&mut self, buf: &mut [u8]) -> Result<(), Self::Error> {
+        self.0.read_exact(buf).map_err(|e| { EmbeddedRmpError(e) })?;
+        Ok(())
+    }
+}
+
 impl<W: embedded_io::Write> embedded_io::ErrorType for EmbeddedRmp<W> {
     type Error = W::Error;
 }

src/tasks/simulation.rs

@@ -9,18 +9,46 @@ use esp_storage::FlashStorage;
 use figments::liber8tion::interpolate::Fract8;
 use nalgebra::{Vector2, Vector3};
 use log::*;
-use rmp::{decode::ValueReadError, encode::ValueWriteError};
+use rmp::{decode::{RmpRead, RmpReadErr, ValueReadError}, encode::{RmpWrite, RmpWriteErr, ValueWriteError}};
 
 use crate::{Breaker, events::{Measurement, SensorSource, SensorState}, simdata::{AnnotationReading, BundleEventHeader, EventRecord, EventStreamHeader, GPSReading, IMUReading, RmpData, SimDataError, StreamEvent, StreamHeader, StreamIndex, StreamType}, storage::{SharedFlash, StorageRange, StorageRangeError}};
 
 pub struct SimDataTable<S> {
-    reader: StorageRange<S>,
+    reader: S,
     count: usize,
     index: usize
 }
 
-impl<S: ReadStorage> SimDataTable<S> where S::Error: core::fmt::Debug + 'static {
+impl<S: RmpRead<Error = E>, E: RmpReadErr + RmpWriteErr> SimDataTable<S> {
-    pub fn open(storage: S, partitions: PartitionTable<'_>) -> Result<Self, SimDataError<S>> {
+    pub fn open(mut reader: S) -> Result<Self, SimDataError<E>> {
+        if let Ok(index) = StreamIndex::from_rmp(&mut reader) {
+            info!("Found stream index: {index:?}");
+            Ok(Self {
+                reader,
+                count: index.count,
+                index: 0
+            })
+        } else {
+            Err(SimDataError::StreamIndexMissing)
+        }
+    }
+}
+
+impl<S: RmpWrite<Error = E>, E: RmpReadErr + RmpWriteErr> SimDataTable<S> {
+    pub fn create(mut writer: S) -> Result<Self, SimDataError<E>> {
+        // FIXME: The stream header should use a fixed size integer for the count, instead of the dynamic array length type
+        info!("Writing new stream index");
+        StreamIndex { count: 0 }.write_rmp(&mut writer)?;
+        Ok(Self {
+            reader: writer,
+            count: 0,
+            index: 0
+        })
+    }
+}
+
+impl<S: ReadStorage<Error = E>, E: core::fmt::Debug + 'static> SimDataTable<StorageRange<S>> {
+    pub fn find_partition(storage: S, partitions: PartitionTable<'_>) -> Result<StorageRange<S>, SimDataError<StorageRangeError<E>>> {
         let partition_type = esp_bootloader_esp_idf::partitions::PartitionType::Data(
                 esp_bootloader_esp_idf::partitions::DataPartitionSubType::Undefined,
         );
@@ -32,29 +60,41 @@ impl<S: ReadStorage> SimDataTable<S> where S::Error: core::fmt::Debug + 'static
         let start = data_partition.offset() as usize;
         let end = data_partition.len() as usize + start;
         info!("Opening simulation data at {start:#02x}:{end:#02x}");
-        let mut reader = StorageRange::new(storage, start, end);
+        Ok(StorageRange::new(storage, start, end))
-        if let Ok(index) = StreamIndex::from_rmp(&mut reader) {
-            info!("Found stream index: {index:?}");
-            Ok(Self {
-                reader,
-                count: index.count,
-                index: 0
-            })
-        } else {
-            error!("Stream index is missing! Have you flashed the partition yet?");
-            Err(SimDataError::StreamIndexMissing)
-        }
     }
 }
 
-impl<S: ReadStorage + Clone + core::fmt::Debug> Iterator for SimDataTable<S> where S::Error: core::fmt::Debug + 'static {
+impl<S: Storage<Error = E> + Clone + core::fmt::Debug, E: core::fmt::Debug + 'static> SimDataTable<StorageRange<S>> {
-    type Item = SimDataReader<S>;
+    pub fn append_new_stream(&mut self, streamid: StreamType) -> Result<StorageRange<S>, SimDataError<StorageRangeError<E>>> {
+        let stream_size = self.reader.capacity() - self.reader.pos() - 6;
+        if stream_size < 1024 {
+            error!("Not enough space left in the simulation data partition to create a new stream!");
+            return Err(SimDataError::NotEnoughSpace);
+        }
+
+        StreamHeader { id: streamid, size: stream_size }.write_rmp(&mut self.reader)?;
+        self.count += 1;
+        self.index += 1;
+        let reset_pos = self.reader.pos();
+        self.reader.seek_abs(0).unwrap();
+        StreamIndex { count: self.count }.write_rmp(&mut self.reader)?;
+        self.reader.seek_abs(reset_pos).unwrap();
+
+        info!("Creating new stream id={streamid:?} capacity={stream_size:#02x} range={:#02x}:{:#02x}", self.reader.abs_start() + self.reader.pos(), self.reader.abs_start() + stream_size);
+
+        Ok(self.reader.subset(stream_size).unwrap())
+    }
+}
+
+impl<S: ReadStorage<Error = E> + Clone + core::fmt::Debug, E: core::fmt::Debug + 'static> Iterator for SimDataTable<StorageRange<S>> {
+    type Item = (StreamHeader, StorageRange<S>);
 
     fn next(&mut self) -> Option<Self::Item> {
         if self.index >= self.count {
             None
         } else {
             loop {
+                let reset_pos = self.reader.pos();
                 match StreamHeader::from_rmp(&mut self.reader) {
                     Ok(header) => {
                         info!("Found stream header: {header:?}");
@@ -66,7 +106,7 @@ impl<S: ReadStorage + Clone + core::fmt::Debug> Iterator for SimDataTable<S> whe
                                 });
                                 self.index += 1;
                                 debug!("Found header={header:?}");
-                                return Some(SimDataReader::open(sensor_reader, header.id));
+                                return Some((header, sensor_reader));
                             },
                             err => {
                                 error!("Could not open the next simulation data chunk: {err:?}");
@@ -83,6 +123,8 @@ impl<S: ReadStorage + Clone + core::fmt::Debug> Iterator for SimDataTable<S> whe
                     }
                     Err(err) => {
                         error!("Read error while reading next chunk in simulation stream table {err:?}");
+                        // Reset back to right before we tried reading the stream header, so that append_new_stream() places it correctly.
+                        self.reader.seek_abs(reset_pos).unwrap();
                         return None;
                     }
                 }
@@ -91,10 +133,11 @@ impl<S: ReadStorage + Clone + core::fmt::Debug> Iterator for SimDataTable<S> whe
     }
 }
 
-pub struct SimDataReader<S> {
+pub struct SimDataStream<S> {
-    reader: StorageRange<S>,
+    reader: S,
     srcid: StreamType,
-    runtime: Duration,
+    last_stamp: Instant,
+    //runtime: Duration,
     event_count: usize,
     index: usize
 }
@@ -116,60 +159,117 @@ impl From<GPSReading> for Measurement {
 
 impl From<AnnotationReading> for Measurement {
     fn from(value: AnnotationReading) -> Self {
-        warn!("ANNOTATION: {}", core::str::from_utf8(&value.buf).unwrap());
+        Measurement::Annotation(value.buf)
-        Measurement::Annotation
     }
 }
 
-impl<S: ReadStorage> SimDataReader<S> where S::Error: core::fmt::Debug + 'static {
+impl<S> SimDataStream<S> {
-    pub fn open(mut reader: StorageRange<S>, stream_type: StreamType) -> Self {
+    pub fn srcid(&self) -> StreamType {
-        debug!("Opening {stream_type:?} sim data chunk");
+        self.srcid
-        let event_count = if stream_type != StreamType::Bundle { EventStreamHeader::from_rmp(&mut reader).unwrap().count } else { usize::MAX };
+    }
-        debug!("Found {event_count} events!");
+}
+
+pub trait Checkpoint {
+    fn checkpoint(&mut self);
+    fn rollback(&mut self);
+}
+
+impl<S: Checkpoint + RmpRead<Error = E>, E: RmpWriteErr + RmpReadErr> SimDataStream<S> {
+    pub fn open(mut reader: S, stream_type: StreamType) -> Self {
+        info!("Opening {stream_type:?} sim data chunk");
+        let event_count = EventStreamHeader::from_rmp(&mut reader).unwrap().count;
+        info!("Found {event_count} events!");
         Self {
             reader,
             srcid: stream_type,
-            runtime: Default::default(),
+            //runtime: Default::default(),
+            last_stamp: Instant::now(),
             event_count,
             index: 0
         }
     }
 
-    pub fn srcid(&self) -> StreamType {
+    fn read_next_event<T: EventRecord + Into<Measurement>>(&mut self) -> Result<(Duration, Measurement), SimDataError<E>> {
-        self.srcid
-    }
-
-    async fn read_next_event<T: EventRecord + Into<Measurement>>(&mut self) -> Result<Measurement, SimDataError<ValueReadError<StorageRangeError<S::Error>>>> {
         let event = StreamEvent::<T>::from_rmp(&mut self.reader)?;
         let delay = embassy_time::Duration::from_millis((event.timecode * 1000.0) as u64);
-        self.runtime += delay;
+        Ok((delay, event.data.into()))
-        info!("waiting {delay}");
-        Timer::after(delay).await;
-        Ok(event.data.into())
     }
 
-    pub async fn read_next(&mut self) -> Result<Option<Measurement>, SimDataError<ValueReadError<StorageRangeError<S::Error>>>> {
+    pub fn read_next(&mut self) -> Result<Option<(Duration, Measurement)>, SimDataError<E>> {
         if self.index < self.event_count {
             self.index += 1;
+            self.reader.checkpoint();
             let next_id = match self.srcid {
-                StreamType::Bundle => BundleEventHeader::from_rmp(&mut self.reader)?.id,
+                StreamType::Bundle => BundleEventHeader::from_rmp(&mut self.reader).inspect_err(|_| { self.reader.rollback() })?.id,
                 _ => self.srcid
             };
             // The read_* functions can only ever return a valid result, or a data/reading error, so we map them into a Some()
-            Ok(Some(match next_id {
+            let (delay, evt) = match next_id {
-                StreamType::IMU => self.read_next_event::<IMUReading>().await?,
+                StreamType::IMU => self.read_next_event::<IMUReading>().inspect_err(|_| { self.reader.rollback() })?,
-                StreamType::GPS => self.read_next_event::<GPSReading>().await?,
+                StreamType::GPS => self.read_next_event::<GPSReading>().inspect_err(|_| { self.reader.rollback() })?,
-                StreamType::Annotations => self.read_next_event::<AnnotationReading>().await?,
+                StreamType::Annotations => self.read_next_event::<AnnotationReading>().inspect_err(|_| { self.reader.rollback() })?,
                 srcid => unimplemented!("{srcid:?} is not a simulatable sensor yet!")
-            }))
+            };
+            Ok(Some((delay, evt)))
+        } else {
+            Ok(None)
+        }
+    }
+
+    pub async fn read_next_and_wait(&mut self) -> Result<Option<Measurement>, SimDataError<E>> {
+        if let Some((delay, evt)) = self.read_next()? {
+            trace!("waiting {delay}");
+            Timer::after(delay).await;
+            self.last_stamp = Instant::now();
+            Ok(Some(evt))
         } else {
             Ok(None)
         }
     }
 }
 
+impl<S: Storage<Error = SE>, SE: core::fmt::Debug + 'static> SimDataStream<StorageRange<S>> {
+    pub fn write_next<T: EventRecord>(&mut self, event: T) -> Result<(), SimDataError<StorageRangeError<SE>>> {
+        BundleEventHeader { id: T::stream_id() }.write_rmp(&mut self.reader)?;
+        let now = Instant::now();
+        let event = StreamEvent {
+            data: event,
+            timecode: (now - self.last_stamp).as_millis() as f64 / 1000.0
+        };
+        event.write_rmp(&mut self.reader)?;
+        self.last_stamp = now;
+        self.event_count = self.event_count.checked_add(1).ok_or(SimDataError::NotEnoughSpace)?;
+
+        self.write_header()?;
+        Ok(())
+    }
+
+    fn write_header(&mut self) -> Result<(), SimDataError<StorageRangeError<SE>>> {
+        let reset_pos = self.reader.pos();
+        self.reader.seek_abs(0).unwrap();
+        trace!("Writing event stream header with count={} to {:#x}", self.event_count, self.reader.abs_start());
+        EventStreamHeader { count: self.event_count }.write_rmp(&mut self.reader)?;
+        self.reader.seek_abs(reset_pos).unwrap();
+
+        Ok(())
+    }
+
+    pub fn create(mut storage: StorageRange<S>, stream_type: StreamType) -> Self {
+        storage.seek_abs(0).unwrap();
+        EventStreamHeader { count: 0 }.write_rmp(&mut storage).unwrap();
+        Self {
+            reader: storage,
+            srcid: stream_type,
+            //runtime: Default::default(),
+            last_stamp: Instant::now(),
+            event_count: 0,
+            index: 0
+        }
+    }
+}
+
 #[embassy_executor::task(pool_size = 3)]
-pub async fn simulation_task(mut reader: SimDataReader<SharedFlash<FlashStorage>>, events: DynamicSender<'static, Measurement>) {
+pub async fn simulation_task(mut reader: SimDataStream<StorageRange<SharedFlash<FlashStorage<'static>>>>, events: DynamicSender<'static, Measurement>) {
     warn!("Starting simulation for {:?}", reader.srcid());
 
     events.send(Measurement::SensorHardwareStatus(SensorSource::Simulation, SensorState::AcquiringFix)).await;
@@ -180,7 +280,7 @@ pub async fn simulation_task(mut reader: SimDataReader<SharedFlash<FlashStorage>
 
     // TODO: SimulationProgress updates
     loop {
-        match reader.read_next().await {
+        match reader.read_next_and_wait().await {
             Ok(Some(next_evt)) => {
                 events.send(next_evt).await;
                 let pct = (idx as f32) / (reader.event_count as f32);