eth: add drivers for init, polling & sending data

Cargo.lock

@@ -373,6 +373,7 @@ dependencies = [
  "cortex-m-rt",
  "cortex-m-semihosting 0.5.0",
  "fugit",
+ "ieee802_3_miim",
  "log",
  "miniconf",
  "nb 1.1.0",

Cargo.toml

@@ -23,7 +23,8 @@ bare-metal = "1"
 nb = "1"
 cortex-m-log = { version = "0.7.0", features = ["log-integration", "semihosting"] }
 stm32f4xx-hal = { version = "0.14.0", features = ["rt", "stm32f407", "usb_fs"] }
-stm32-eth = { version = "0.5.2", features = ["stm32f407"] }
+stm32-eth = { version = "0.5.2", features = ["stm32f407", "smoltcp-phy", "smoltcp"] }
+ieee802_3_miim = "0.8.0"
 smoltcp = { version = "0.10.0", default-features = false, features = ["proto-ipv4", "socket-tcp", "log", "medium-ethernet"] }
 uom = { version = "0.30", default-features = false, features = ["autoconvert", "si", "f64", "use_serde"] }
 num-traits = { version = "0.2.15", default-features = false, features = ["libm"] }

echo_eth_test.py

@@ -0,0 +1,14 @@
+# echo-client.py
+
+import socket
+
+#192, 168, 1, 132
+HOST = "192.168.1.132"  # The server's hostname or IP address
+PORT = 1337  # The port used by the server
+
+with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
+    s.connect((HOST, PORT))
+    s.sendall(b"Hello, world")
+    data = s.recv(1024)
+
+print(f"Received {data!r}")

src/device/boot.rs

@@ -1,9 +1,12 @@
 use super::{gpio, sys_timer, usb};
 use crate::device::flash_store::{self, FlashStore};
+use crate::device::sys_timer::sleep;
 use crate::laser_diode::ld_ctrl::{*};
 use crate::laser_diode::laser_diode::LdDrive;
 use crate::thermostat::max1968::MAX1968;
 use crate::thermostat::thermostat::Thermostat;
+use crate::net::net::ServerHandle;
+use stm32_eth;
 use fugit::ExtU32;
 use log::info;
 use stm32f4xx_hal::{
@@ -41,7 +44,7 @@ pub fn bootup(
 
     sys_timer::setup(core_perif.SYST, clocks);
 
-    let (_eth_pins, usb, current_source_phy, ad7172_phy, max1968_phy, pd_mon_phy) = gpio::setup(
+    let (eth_pins, eth_mgmt_pins, usb, current_source_phy, ad7172_phy, max1968_phy, pd_mon_phy) = gpio::setup(
         clocks,
         perif.TIM4,
         perif.GPIOA,
@@ -59,8 +62,21 @@ pub fn bootup(
 
     usb::State::setup(usb);
 
-    let current_source = LdCtrl::new(current_source_phy);
+    let ethernet_parts_in = stm32_eth::PartsIn {
+        dma: perif.ETHERNET_DMA,
+        mac: perif.ETHERNET_MAC,
+        mmc: perif.ETHERNET_MMC,
+        ptp: perif.ETHERNET_PTP,
+    };
 
+    sleep(1000);
+
+    info!("Setting up ETH");
+    ServerHandle::new(eth_pins, eth_mgmt_pins, ethernet_parts_in, clocks);
+    info!("Setting finish setting up ETH");
+
+    let current_source = LdCtrl::new(current_source_phy);
+    info!("Setting up Laser");
     let mut laser = LdDrive::new(current_source, perif.ADC2, pd_mon_phy);
     laser.setup();
     laser.ld_open();
@@ -69,6 +85,7 @@ pub fn bootup(
     laser.set_pd_i_limit(ElectricCurrent::new::<milliampere>(2.5));
     laser.power_up();
 
+    info!("Setting up TEC");
     let tec_driver = MAX1968::new(max1968_phy, perif.ADC1);
 
     let mut thermostat = Thermostat::new(tec_driver, ad7172_phy);

src/device/gpio.rs

@@ -4,9 +4,10 @@ use crate::laser_diode::ld_pwr_exc_protector::LdPwrExcProtectorPhy;
 use crate::thermostat::ad5680;
 use crate::thermostat::max1968::{self, MAX1968PinSet, MAX1968Phy, PWM_FREQ_KHZ};
 use crate::thermostat::ad7172;
+use crate::net::net::EthernetMgmtPins;
 use stm32_eth::EthPins;
 use stm32f4xx_hal::{
-    gpio::{gpioa::*, gpiob::*, gpioc::*, GpioExt, Input},
+    gpio::{gpioa::*, gpiob::*, gpioc::*, GpioExt, Input, Speed},
     otg_fs::USB,
     pac::{
         GPIOA, GPIOB, GPIOC, GPIOD, GPIOG, OTG_FS_DEVICE, OTG_FS_GLOBAL, OTG_FS_PWRCLK, SPI1, SPI2, SPI3,
@@ -36,6 +37,7 @@ pub fn setup(
     otg_fs_pwrclk: OTG_FS_PWRCLK,
 ) -> (
     EthernetPins,
+    EthernetMgmtPins,
     USB,
     LdCtrlPhy<ld_ctrl::Channel0>,
     ad7172::AdcPhy,
@@ -67,6 +69,13 @@ pub fn setup(
         rx_d1: gpioc.pc5,
     };
     
+    let mut eth_mgmt_pins = EthernetMgmtPins {
+        mdio:  gpioa.pa2.into_alternate::<11>(),
+        mdc: gpioc.pc1.into_alternate::<11>(),
+    };
+    eth_mgmt_pins.mdio.set_speed(Speed::VeryHigh);
+    eth_mgmt_pins.mdc.set_speed(Speed::VeryHigh);
+
     let current_source_phy = LdCtrlPhy {
         dac: max5719::Dac::new(Spi::new(
                     spi2,
@@ -137,5 +146,5 @@ pub fn setup(
         gpioa.pa15.into_push_pull_output(),
     ).unwrap();
 
-    (eth_pins, usb, current_source_phy, ad7172_phy, max1968_phy, pd_mon_phy)
+    (eth_pins, eth_mgmt_pins, usb, current_source_phy, ad7172_phy, max1968_phy, pd_mon_phy)
 }

src/main.rs

@@ -8,6 +8,7 @@ mod device;
 mod laser_diode;
 mod thermostat;
 mod pid;
+mod net;
 
 use device::{boot::bootup, log_setup, sys_timer};
 use uom::fmt::DisplayStyle::Abbreviation;

src/net/mod.rs

@@ -0,0 +1 @@
+pub mod net;

src/net/net.rs

@@ -0,0 +1,289 @@
+use crate::device::sys_timer;
+use log::{debug, info, warn};
+use smoltcp::{
+    iface::{
+        self, Interface, SocketHandle, SocketSet, SocketStorage
+    },
+    socket::tcp::{State, SocketBuffer, Socket},
+    wire::{EthernetAddress, IpAddress, IpCidr, Ipv4Address, Ipv4Cidr},
+    time::Instant,
+};
+use stm32_eth::{
+    Parts, EthPins, PartsIn, 
+    dma::{
+        TxRingEntry, RxRingEntry, EthernetDMA
+    }};
+use stm32f4xx_hal::{
+    gpio::{gpioa::*, gpiob::*, gpioc::*, Alternate, Input}, 
+    rcc::Clocks,
+    interrupt,
+};
+
+const IPV4_ADDR: (u8, u8, u8, u8) = (192, 168, 1, 132);
+const IP_INIT: IpCidr = IpCidr::Ipv4(Ipv4Cidr::new(
+    Ipv4Address::new(IPV4_ADDR.0, IPV4_ADDR.1, IPV4_ADDR.2, IPV4_ADDR.3),
+    24,
+));
+const ADDRESS: (IpAddress, u16) = (
+    IpAddress::Ipv4(Ipv4Address::new(
+        IPV4_ADDR.0,
+        IPV4_ADDR.1,
+        IPV4_ADDR.2,
+        IPV4_ADDR.3,
+    )),
+    1337,
+);
+const MAC: [u8; 6] = [0x02, 0x5f, 0x25, 0x37, 0x93, 0x0e];
+
+pub struct ServerHandle {
+    socket_handle: SocketHandle,
+    socket_set: SocketSet<'static>,
+    iface: EthInterface,
+    dma: EthernetDMA<'static, 'static>,
+}
+pub type EthernetPins =
+    EthPins<PA1<Input>, PA7<Input>, PB11<Input>, PB12<Input>, PB13<Input>, PC4<Input>, PC5<Input>>;
+pub struct EthernetMgmtPins {
+    pub mdio: PA2<Alternate<11>>,
+    pub mdc: PC1<Alternate<11>>,
+}
+pub type EthInterface = Interface;
+
+static mut RX_RING: Option<[RxRingEntry; 8]> = None;
+static mut TX_RING: Option<[TxRingEntry; 2]> = None;
+static mut SOCKET_STORAGE: Option<[SocketStorage<'static>; 1]> = None;
+
+static mut TCP_SOCKET_STORAGE : Option<TcpSocketStorage> = None;
+
+#[derive(Copy, Clone)]
+pub struct TcpSocketStorage {
+    rx_storage: [u8; 2048],
+    tx_storage: [u8; 2048],
+}
+
+impl TcpSocketStorage {
+    const fn new() -> Self {
+        Self {
+            rx_storage: [0; 2048],
+            tx_storage: [0; 2048],
+        }
+    }
+}
+
+fn now_fn() -> smoltcp::time::Instant {
+    Instant::from_millis(i64::from(sys_timer::now()))
+}
+
+static mut SERVER_HANDLE : Option<ServerHandle> = None;
+
+impl ServerHandle {
+    pub fn new (eth_pins: EthernetPins,
+        eth_mgmt_pins: EthernetMgmtPins,
+        ethernet_parts_in: PartsIn,
+        clocks: Clocks,
+    ) {        
+        let rx_ring = unsafe { RX_RING.get_or_insert(Default::default()) };
+        let tx_ring = unsafe { TX_RING.get_or_insert(Default::default()) };
+        let tcp_socket_storage = unsafe { TCP_SOCKET_STORAGE.get_or_insert(TcpSocketStorage::new()) };
+        let socket_storage = unsafe { SOCKET_STORAGE.get_or_insert([SocketStorage::EMPTY; 1]) };
+
+        let Parts {
+            mut dma,
+            mac,
+            #[cfg(feature = "ptp")]
+            ..
+        } = stm32_eth::new_with_mii(
+            ethernet_parts_in,
+            &mut rx_ring[..],
+            &mut tx_ring[..],
+            clocks,
+            eth_pins,
+            eth_mgmt_pins.mdio,
+            eth_mgmt_pins.mdc
+        ).unwrap();
+
+        let mut routes = smoltcp::iface::Routes::new();
+        routes
+            .add_default_ipv4_route(Ipv4Address::new(192, 168, 1, 1))
+            .ok();
+        dma.enable_interrupt();
+
+        let rx_buffer = SocketBuffer::new(&mut tcp_socket_storage.rx_storage[..]);
+        let tx_buffer = SocketBuffer::new(&mut tcp_socket_storage.tx_storage[..]);
+        let socket = Socket::new(rx_buffer, tx_buffer);
+
+        let config = iface::Config::new(EthernetAddress::from_bytes(&MAC).into());
+        let mut iface = Interface::new(config, &mut &mut dma, smoltcp::time::Instant::ZERO);
+        iface.set_hardware_addr(EthernetAddress(MAC).into());
+
+        iface.update_ip_addrs(|addr| {
+            addr.push(IP_INIT).unwrap();
+        });
+
+        let mut sockets = SocketSet::new(&mut socket_storage[..]);
+        let tcp_handle = sockets.add(socket);
+        let socket = sockets.get_mut::<Socket>(tcp_handle);
+        socket.listen(ADDRESS).ok();
+        iface.poll(Instant::from_millis(i64::from(sys_timer::now())), &mut &mut dma, &mut sockets);
+        
+        let server = ServerHandle {
+            socket_handle: tcp_handle,
+            socket_set: sockets,
+            iface: iface,
+            dma: dma,
+        };
+
+        if let Ok(mut phy) = EthernetPhy::from_miim(mac, 0) {
+            info!(
+                "Resetting PHY as an extra step. Type: {}",
+                phy.ident_string()
+            );
+
+            phy.phy_init();
+        } else {
+            info!("Not resetting unsupported PHY.");
+        }
+
+        unsafe {
+            SERVER_HANDLE = Some(server);
+        }
+    }
+
+    pub fn poll(&mut self, buffer: &mut [u8]) {
+        self.iface.poll(now_fn(),  &mut &mut self.dma, &mut self.socket_set);
+        let socket = self.socket_set.get_mut::<Socket>(self.socket_handle);
+
+        if let Ok(recv_bytes) = socket.recv_slice(buffer) {
+            if recv_bytes > 0 {
+                socket.send_slice(&buffer[..recv_bytes]).ok();
+                info!("Echoed {} bytes.", recv_bytes);
+            }
+        }
+
+        if !socket.is_listening() && !socket.is_open() || socket.state() == State::CloseWait {
+            socket.abort();
+            socket.listen(ADDRESS).ok();
+            warn!("Disconnected... Reopening listening socket.");
+        }
+
+        self.iface.poll(now_fn(), &mut &mut self.dma, &mut self.socket_set);
+    }
+}
+
+use ieee802_3_miim::{
+    phy::{
+        lan87xxa::{LAN8720A, LAN8742A},
+        BarePhy, KSZ8081R,
+    },
+    Miim, Pause, Phy,
+};
+
+/// An ethernet PHY
+pub enum EthernetPhy<M: Miim> {
+    /// LAN8720A
+    LAN8720A(LAN8720A<M>),
+    /// LAN8742A
+    LAN8742A(LAN8742A<M>),
+    /// KSZ8081R
+    KSZ8081R(KSZ8081R<M>),
+}
+
+impl<M: Miim> Phy<M> for EthernetPhy<M> {
+    fn best_supported_advertisement(&self) -> ieee802_3_miim::AutoNegotiationAdvertisement {
+        unimplemented!()
+    }
+
+    fn get_miim(&mut self) -> &mut M {
+        match self {
+            EthernetPhy::LAN8720A(phy) => phy.get_miim(),
+            EthernetPhy::LAN8742A(phy) => phy.get_miim(),
+            EthernetPhy::KSZ8081R(phy) => phy.get_miim(),
+        }
+    }
+
+    fn get_phy_addr(&self) -> u8 {
+        match self {
+            EthernetPhy::LAN8720A(phy) => phy.get_phy_addr(),
+            EthernetPhy::LAN8742A(phy) => phy.get_phy_addr(),
+            EthernetPhy::KSZ8081R(phy) => phy.get_phy_addr(),
+        }
+    }
+}
+
+impl<M: Miim> EthernetPhy<M> {
+    /// Attempt to create one of the known PHYs from the given
+    /// MIIM.
+    ///
+    /// Returns an error if the PHY does not support the extended register
+    /// set, or if the PHY's identifier does not correspond to a known PHY.
+    pub fn from_miim(miim: M, phy_addr: u8) -> Result<Self, M> {
+        let mut bare = BarePhy::new(miim, phy_addr, Pause::NoPause);
+        let phy_ident = if let Some(id) = bare.phy_ident() {
+            id.raw_u32()
+        } else {
+            return Err(bare.release());
+        };
+        let miim = bare.release();
+        match phy_ident & 0xFFFFFFF0 {
+            0x0007C0F0 => Ok(Self::LAN8720A(LAN8720A::new(miim, phy_addr))),
+            0x0007C130 => Ok(Self::LAN8742A(LAN8742A::new(miim, phy_addr))),
+            0x00221560 => Ok(Self::KSZ8081R(KSZ8081R::new(miim, phy_addr))),
+            _ => Err(miim),
+        }
+    }
+
+    /// Get a string describing the type of PHY
+    pub const fn ident_string(&self) -> &'static str {
+        match self {
+            EthernetPhy::LAN8720A(_) => "LAN8720A",
+            EthernetPhy::LAN8742A(_) => "LAN8742A",
+            EthernetPhy::KSZ8081R(_) => "KSZ8081R",
+        }
+    }
+
+    /// Initialize the PHY
+    pub fn phy_init(&mut self) {
+        match self {
+            EthernetPhy::LAN8720A(phy) => phy.phy_init(),
+            EthernetPhy::LAN8742A(phy) => phy.phy_init(),
+            EthernetPhy::KSZ8081R(phy) => {
+                phy.set_autonegotiation_advertisement(phy.best_supported_advertisement());
+            }
+        }
+    }
+
+    #[allow(dead_code)]
+    pub fn speed(&mut self) -> Option<ieee802_3_miim::phy::PhySpeed> {
+        match self {
+            EthernetPhy::LAN8720A(phy) => phy.link_speed(),
+            EthernetPhy::LAN8742A(phy) => phy.link_speed(),
+            EthernetPhy::KSZ8081R(phy) => phy.link_speed(),
+        }
+    }
+
+    #[allow(dead_code)]
+    pub fn release(self) -> M {
+        match self {
+            EthernetPhy::LAN8720A(phy) => phy.release(),
+            EthernetPhy::LAN8742A(phy) => phy.release(),
+            EthernetPhy::KSZ8081R(phy) => phy.release(),
+        }
+    }
+}
+
+/// Potentially wake up from `wfi()`, set the interrupt pending flag,
+/// clear interrupt flags.
+#[interrupt]
+fn ETH() {
+    let interrupt_reason = stm32_eth::eth_interrupt_handler();
+    debug!("Ethernet Interrupt{:?}", interrupt_reason);
+    unsafe{
+        if let Some(ref mut server_handle ) = SERVER_HANDLE {
+            let mut data : [u8; 512] = [0u8; 512];
+            server_handle.poll(&mut data);
+        }
+        else {
+            panic!("Interrupt is called before init");
+        }
+    }
+}