Adding wip changes to ethernet interface

.cargo/config

@@ -1,5 +1,5 @@
 [target.'cfg(all(target_arch = "arm", target_os = "none"))']
-runner = "gdb-multiarch -q -x openocd.gdb"
+runner = "gdb-multiarch -q -x bmp.gdb"
 rustflags = ["-C", "link-arg=-Tlink.x"]
 
 [build]

Cargo.toml

@@ -33,7 +33,7 @@ log = "0.4"
 panic-semihosting = { version = "0.5", optional = true }
 panic-halt = "0.2"
 serde = { version = "1.0", features = ["derive"], default-features = false }
-heapless = "0.5"
+heapless = "0.5.4"
 serde-json-core = "0.1"
 cortex-m-rtfm = "0.5"
 embedded-hal = "0.2.3"

src/afe.rs

@@ -1,6 +1,7 @@
 use embedded_hal;
+use serde::{Serialize, Deserialize};
 
-#[derive(Copy, Clone, Debug)]
+#[derive(Copy, Clone, Debug, Serialize, Deserialize)]
 pub enum Gain {
     G1 = 0b00,
     G2 = 0b01,

src/main.rs

@@ -39,6 +39,12 @@ use stm32h7xx_hal::{
     prelude::*,
     stm32 as pac,
 };
+use pounder::Error;
+
+use heapless::{
+    String,
+    consts::*,
+};
 
 use embedded_hal::{
     digital::v2::OutputPin,
@@ -111,12 +117,64 @@ type AFE2 = afe::ProgrammableGainAmplifier<
     hal::gpio::gpiod::PD14<hal::gpio::Output<hal::gpio::PushPull>>,
     hal::gpio::gpiod::PD15<hal::gpio::Output<hal::gpio::PushPull>>>;
 
+macro_rules! route_request {
+    ($request:ident, $buffer:ident,
+            readable_attributes: [$(($read_attribute:tt, $getter:tt)),*],
+            modifiable_attributes: [$(($write_attribute:tt, $TYPE:ty, $setter:tt)),*]) => {
+        match $request {
+            server::Request::Read{attribute} => {
+                match attribute {
+                $(
+                    &$read_attribute => {
+                        let value = match $getter() {
+                            Ok(data) => data,
+                            Err(_) => return server::Response::error(attribute,
+                                                                     "Failed to set attribute"),
+                        };
+
+                        $buffer = match serde_json_core::to_string(&value) {
+                            Ok(data) => data,
+                            Err(_) => return server::Response::error(attribute,
+                                    "Failed to encode attribute value"),
+                        };
+
+                        server::Response::success(attribute, &$buffer)
+                    },
+                 )*
+                    _ => server::Response::error(attribute, "Unknown attribute")
+                }
+            },
+            server::Request::Write{attribute, value} => {
+                match attribute {
+                $(
+                    &$write_attribute => {
+                        let new_value = match serde_json_core::from_str::<$TYPE>(value) {
+                            Ok(data) => data,
+                            Err(_) => return server::Response::error(attribute,
+                                    "Failed to decode value"),
+                        };
+
+                        match $setter(new_value) {
+                            Ok(_) => server::Response::success(attribute, value),
+                            Err(_) => server::Response::error(attribute,
+                                    "Failed to set attribute"),
+                        }
+                    }
+                 )*
+                    _ => server::Response::error(attribute, "Unknown attribute")
+                }
+            }
+        }
+    }
+}
+
+
 #[rtfm::app(device = stm32h7xx_hal::stm32, peripherals = true, monotonic = rtfm::cyccnt::CYCCNT)]
 const APP: () = {
     struct Resources {
         adc1: hal::spi::Spi<hal::stm32::SPI2>,
         dac1: hal::spi::Spi<hal::stm32::SPI4>,
-        _afe1: AFE1,
+        afe1: AFE1,
 
         adc2: hal::spi::Spi<hal::stm32::SPI3>,
         dac2: hal::spi::Spi<hal::stm32::SPI5>,
@@ -446,7 +504,7 @@ const APP: () = {
             dac1: dac1_spi,
             adc2: adc2_spi,
             dac2: dac2_spi,
-            _afe1: afe1,
+            afe1: afe1,
             _afe2: afe2,
 
             dbg_pin: debug_pin,
@@ -504,7 +562,7 @@ const APP: () = {
         cortex_m::asm::bkpt();
     }
 
-    #[idle(resources=[net_interface, mac_addr, iir_state, iir_ch])]
+    #[idle(resources=[net_interface, mac_addr, iir_state, iir_ch, afe1])]
     fn idle(mut c: idle::Context) -> ! {
 
         let mut socket_set_entries: [_; 8] = Default::default();
@@ -536,6 +594,8 @@ const APP: () = {
         // TODO: Replace with reference to CPU clock from CCDR.
         next_ms += 400_000.cycles();
 
+        let buffer: String<U512> = String::new();
+
         loop {
             let tick = Instant::now() > next_ms;
 
@@ -574,12 +634,16 @@ const APP: () = {
                         .listen(1235)
                         .unwrap_or_else(|e| warn!("TCP listen error: {:?}", e));
                 } else {
-                    server.poll(socket, |req: &server::Request| {
+                    server.poll(socket, |req| {
-                        if req.channel < 2 {
+                        info!("Got request: {:?}", req);
-                            c.resources.iir_ch.lock(|iir_ch| {
+                        route_request!(req, buffer,
-                                iir_ch[req.channel as usize] = req.iir
+                            readable_attributes: [
-                            });
+                                ("stabilizer/afe0/gain", (|| Ok::<afe::Gain, ()>(c.resources.afe1.get_gain())))
-                        }
+                            ],
+                            modifiable_attributes: [
+                                ("stabilizer/afe0/gain", afe::Gain, (|gain| Ok::<(), ()>(c.resources.afe1.set_gain(gain))))
+                            ]
+                        )
                     });
                 }
             }

src/pounder/mod.rs

@@ -1,14 +1,14 @@
 use mcp23017;
 use ad9959;
 
-pub mod error;
+mod error;
 pub mod attenuators;
 mod rf_power;
 pub mod types;
 
 use super::hal;
 
-use error::Error;
+pub use error::Error;
 use attenuators::AttenuatorInterface;
 use types::{DdsChannel, InputChannel};
 use rf_power::PowerMeasurementInterface;

src/server.rs

@@ -8,7 +8,6 @@ use core::fmt::Write;
 
 
 use serde::{
-    de::DeserializeOwned,
     Deserialize,
     Serialize
 };
@@ -19,18 +18,43 @@ use serde_json_core::{
 };
 
 use super::net;
-use super::iir::IIR;
 
-#[derive(Deserialize, Serialize)]
+#[derive(Deserialize, Serialize, Debug)]
-pub struct Request {
+pub enum Request<'a, 'b> {
-    pub channel: u8,
+    Read{attribute: &'a str},
-    pub iir: IIR,
+    Write{attribute: &'a str, value: &'b str},
 }
 
 #[derive(Serialize)]
-pub struct Response<'a> {
+pub struct Response<'a, 'b> {
     code: i32,
-    message: &'a str,
+    attribute: &'a str,
+    value: &'b str,
+}
+
+impl<'a, 'b> Response<'a, 'b> {
+    pub fn success<'c, 'd>(attribute: &'c str, value: &'d str) -> Self
+    where
+        'c: 'a,
+        'd: 'b,
+    {
+        Self { code: 200, attribute: attribute, value: value}
+    }
+
+    pub fn error<'c, 'd>(attribute: &'c str, message: &'d str) -> Self
+    where
+        'c: 'a,
+        'd: 'b,
+    {
+        Self { code: 400, attribute: attribute, value: message}
+    }
+
+    pub fn custom<'c>(code: i32, message : &'c str) -> Self
+    where
+        'c: 'b,
+    {
+        Self { code: code, attribute: "", value: message}
+    }
 }
 
 #[derive(Serialize)]
@@ -61,18 +85,16 @@ impl Server {
         }
     }
 
-    pub fn poll<T, F, R>(
+    pub fn poll<'a, 'b, F>(
         &mut self,
         socket: &mut net::socket::TcpSocket,
         f: F,
-    ) -> Option<R>
+    )
     where
-        T: DeserializeOwned,
+        F: FnOnce(&Request) -> Response<'a, 'b>
-        F: FnOnce(&T) -> R,
     {
         while socket.can_recv() {
-            let found = socket
+            let found = socket.recv(|buf| {
-                .recv(|buf| {
                 let (len, found) =
                     match buf.iter().position(|&c| c as char == '\n') {
                         Some(end) => (end + 1, true),
@@ -85,49 +107,32 @@ impl Server {
                     self.data.extend_from_slice(&buf[..len]).unwrap();
                 }
                 (len, found)
-                })
+            }).unwrap();
-                .unwrap();
+
             if found {
                 if self.discard {
                     self.discard = false;
-                    json_reply(
+                    json_reply(socket, &Response::custom(520, "command buffer overflow"),
-                        socket,
-                        &Response {
-                            code: 520,
-                            message: "command buffer overflow",
-                        },
                     );
                     self.data.clear();
                 } else {
-                    let r = from_slice::<T>(&self.data[..self.data.len() - 1]);
+                    let r = from_slice::<Request>(&self.data[..self.data.len() - 1]);
                     self.data.clear();
                     match r {
                         Ok(res) => {
-                            let r = f(&res);
+                            let response = f(&res);
-                            json_reply(
+                            json_reply(socket, &response);
-                                socket,
+                            return;
-                                &Response {
-                                    code: 200,
-                                    message: "ok",
                         },
-                            );
-                            return Some(r);
-                        }
                         Err(err) => {
                             warn!("parse error {:?}", err);
-                            json_reply(
+                            json_reply(socket, &Response::custom(550, "parse error"),
-                                socket,
-                                &Response {
-                                    code: 550,
-                                    message: "parse error",
-                                },
                             );
                         }
                     }
                 }
             }
         }
-        None
     }
 }