stm32l4: Add EVAL-ADIN1110EBZ example with basic http server

Page show the current temperature and auto refresh every 1s.

3 files changed, 449 insertions, 3 deletions

diff --git a/examples/stm32l4/.cargo/config.toml b/examples/stm32l4/.cargo/config.toml
index 36e74e5a5..db3a7ceff 100644
--- a/examples/stm32l4/.cargo/config.toml
+++ b/examples/stm32l4/.cargo/config.toml
@@ -2,7 +2,7 @@
 # replace STM32F429ZITx with your chip as listed in `probe-rs chip list`
 #runner = "probe-rs run --chip STM32L475VGT6"
 #runner = "probe-rs run --chip STM32L475VG"
-runner = "probe-rs run --chip STM32L4S5VI"
+runner = "probe-run --chip STM32L4S5QI"
 
 [build]
 target = "thumbv7em-none-eabi"
diff --git a/examples/stm32l4/Cargo.toml b/examples/stm32l4/Cargo.toml
index f552a6109..e5be94eda 100644
--- a/examples/stm32l4/Cargo.toml
+++ b/examples/stm32l4/Cargo.toml
@@ -6,12 +6,17 @@ license = "MIT OR Apache-2.0"
 
 [dependencies]
 # Change stm32l4s5vi to your chip name, if necessary.
-embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "unstable-pac", "stm32l4s5vi", "memory-x", "time-driver-any", "exti", "unstable-traits", "chrono"]  }
+embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "unstable-pac", "stm32l4s5qi", "memory-x", "time-driver-any", "exti", "unstable-traits", "chrono"]  }
 embassy-sync = { version = "0.2.0", path = "../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.3.0", path = "../../embassy-executor", features = ["nightly", "arch-cortex-m", "executor-thread", "defmt", "integrated-timers"] }
-embassy-time = { version = "0.1.2", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-hz-32_768"] }
+embassy-time = { version = "0.1.2", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-hz-32_768", "unstable-traits", "nightly"] }
 embassy-embedded-hal = { version = "0.1.0", path = "../../embassy-embedded-hal" }
 embassy-usb = { version = "0.1.0", path = "../../embassy-usb", features = ["defmt"] }
+embassy-net-adin1110 = { version = "0.1.0", path = "../../embassy-net-adin1110", default-features = false }
+embassy-net = { version = "0.1.0", path = "../../embassy-net", features = ["defmt", "nightly", "udp", "tcp", "dhcpv4", "medium-ethernet"] }
+embassy-futures = { version = "0.1.0", path = "../../embassy-futures" }
+embedded-io-async = { version = "0.5.0", features = ["defmt-03"] }
+embedded-io = { version = "0.5.0", features = ["defmt-03"] }
 
 defmt = "0.3"
 defmt-rtt = "0.4"
@@ -21,10 +26,13 @@ cortex-m-rt = "0.7.0"
 embedded-hal = "0.2.6"
 embedded-hal-1 = { package = "embedded-hal", version = "=1.0.0-rc.1" }
 embedded-hal-async = { version = "=1.0.0-rc.1" }
+embedded-hal-bus = { version = "=0.1.0-rc.1", features = ["async"] }
 panic-probe = { version = "0.3", features = ["print-defmt"] }
 futures = { version = "0.3.17", default-features = false, features = ["async-await"] }
 heapless = { version = "0.7.5", default-features = false }
 chrono = { version = "^0.4", default-features = false }
+rand = { version = "0.8.5", default-features = false }
+static_cell = {version = "1.1", features = ["nightly"]}
 
 micromath = "2.0.0"
 
diff --git a/examples/stm32l4/src/bin/spe_adin1110_http_server.rs b/examples/stm32l4/src/bin/spe_adin1110_http_server.rs
new file mode 100644
index 000000000..148c58771
--- /dev/null
+++ b/examples/stm32l4/src/bin/spe_adin1110_http_server.rs
@@ -0,0 +1,438 @@
+#![deny(clippy::pedantic)]
+#![allow(clippy::doc_markdown)]
+#![no_main]
+#![no_std]
+// Needed unitl https://github.com/rust-lang/rust/issues/63063 is stablised.
+#![feature(type_alias_impl_trait)]
+#![feature(associated_type_bounds)]
+#![allow(clippy::missing_errors_doc)]
+
+// This example works on a ANALOG DEVICE EVAL-ADIN110EBZ board.
+// Settings switch S201 "HW CFG":
+//  - Without SPI CRC: OFF-ON-OFF-OFF-OFF
+//  -    With SPI CRC: ON -ON-OFF-OFF-OFF
+// Settings switch S303 "uC CFG": CFG0: On = static ip, Off = Dhcp
+// The webserver shows the actual temperature of the onboard i2c temp sensor.
+
+use core::marker::PhantomData;
+use core::sync::atomic::{AtomicI32, Ordering};
+
+use defmt::{error, info, println, unwrap, Format};
+use defmt_rtt as _; // global logger
+use embassy_executor::Spawner;
+use embassy_futures::select::{select, Either};
+use embassy_futures::yield_now;
+use embassy_net::tcp::TcpSocket;
+use embassy_net::{Ipv4Address, Ipv4Cidr, Stack, StackResources, StaticConfigV4};
+use embassy_time::{Delay, Duration, Ticker, Timer};
+use embedded_hal_async::i2c::I2c as I2cBus;
+use embedded_io::Write as bWrite;
+use embedded_io_async::Write;
+use hal::gpio::{Input, Level, Output, Speed};
+use hal::i2c::{self, I2c};
+use hal::rcc::{self};
+use hal::rng::{self, Rng};
+use hal::{bind_interrupts, exti, pac, peripherals};
+use heapless::Vec;
+use rand::RngCore;
+use static_cell::make_static;
+use {embassy_stm32 as hal, panic_probe as _};
+
+bind_interrupts!(struct Irqs {
+    I2C3_EV => i2c::InterruptHandler<peripherals::I2C3>;
+    RNG => rng::InterruptHandler<peripherals::RNG>;
+});
+
+use embassy_net_adin1110::{self, Device, Runner, ADIN1110};
+use embedded_hal_bus::spi::ExclusiveDevice;
+use hal::gpio::Pull;
+use hal::i2c::Config as I2C_Config;
+use hal::rcc::{ClockSrc, PLLClkDiv, PLLMul, PLLSource, PLLSrcDiv};
+use hal::spi::{Config as SPI_Config, Spi};
+use hal::time::Hertz;
+
+// Basic settings
+// MAC-address used by the adin1110
+const MAC: [u8; 6] = [0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff];
+// Static IP settings
+const IP_ADDRESS: Ipv4Cidr = Ipv4Cidr::new(Ipv4Address([192, 168, 1, 5]), 24);
+// Listen port for the webserver
+const HTTP_LISTEN_PORT: u16 = 80;
+
+pub type SpeSpi = Spi<'static, peripherals::SPI2, peripherals::DMA1_CH1, peripherals::DMA1_CH2>;
+pub type SpeSpiCs = ExclusiveDevice<SpeSpi, Output<'static, peripherals::PB12>, Delay>;
+pub type SpeInt = exti::ExtiInput<'static, peripherals::PB11>;
+pub type SpeRst = Output<'static, peripherals::PC7>;
+pub type Adin1110T = ADIN1110<SpeSpiCs>;
+pub type TempSensI2c = I2c<'static, peripherals::I2C3, peripherals::DMA1_CH6, peripherals::DMA1_CH7>;
+
+static TEMP: AtomicI32 = AtomicI32::new(0);
+
+#[embassy_executor::main]
+async fn main(spawner: Spawner) {
+    defmt::println!("Start main()");
+
+    let mut config = embassy_stm32::Config::default();
+
+    // 80Mhz clock (Source: 8 / SrcDiv: 1 * PLLMul 20 / ClkDiv 2)
+    // 80MHz highest frequency for flash 0 wait.
+    config.rcc.mux = ClockSrc::PLL(
+        PLLSource::HSE(Hertz(8_000_000)),
+        PLLClkDiv::Div2,
+        PLLSrcDiv::Div1,
+        PLLMul::Mul20,
+        None,
+    );
+    config.rcc.hsi48 = true; // needed for rng
+    config.rcc.rtc_mux = rcc::RtcClockSource::LSI32;
+
+    let dp = embassy_stm32::init(config);
+
+    // RM0432rev9, 5.1.2: Independent I/O supply rail
+    // After reset, the I/Os supplied by VDDIO2 are logically and electrically isolated and
+    // therefore are not available. The isolation must be removed before using any I/O from
+    // PG[15:2], by setting the IOSV bit in the PWR_CR2 register, once the VDDIO2 supply is present
+    pac::PWR.cr2().modify(|w| w.set_iosv(true));
+
+    let reset_status = pac::RCC.bdcr().read().0;
+    defmt::println!("bdcr before: 0x{:X}", reset_status);
+
+    defmt::println!("Setup IO pins");
+
+    // Setup LEDs
+    let _led_uc1_green = Output::new(dp.PC13, Level::Low, Speed::Low);
+    let mut led_uc2_red = Output::new(dp.PE2, Level::High, Speed::Low);
+    let led_uc3_yellow = Output::new(dp.PE6, Level::High, Speed::Low);
+    let led_uc4_blue = Output::new(dp.PG15, Level::High, Speed::Low);
+
+    // Read the uc_cfg switches
+    let uc_cfg0 = Input::new(dp.PB2, Pull::None);
+    let _uc_cfg1 = Input::new(dp.PF11, Pull::None);
+    let _uc_cfg2 = Input::new(dp.PG6, Pull::None);
+    let _uc_cfg3 = Input::new(dp.PG11, Pull::None);
+
+    // Setup I2C pins
+    let temp_sens_i2c = I2c::new(
+        dp.I2C3,
+        dp.PG7,
+        dp.PG8,
+        Irqs,
+        dp.DMA1_CH6,
+        dp.DMA1_CH7,
+        Hertz(100_000),
+        I2C_Config::default(),
+    );
+
+    // Setup IO and SPI for the SPE chip
+    let spe_reset_n = Output::new(dp.PC7, Level::Low, Speed::Low);
+    let spe_cfg0 = Input::new(dp.PC8, Pull::None);
+    let spe_cfg1 = Input::new(dp.PC9, Pull::None);
+    let _spe_ts_capt = Output::new(dp.PC6, Level::Low, Speed::Low);
+
+    let spe_int = Input::new(dp.PB11, Pull::None);
+    let spe_int = exti::ExtiInput::new(spe_int, dp.EXTI11);
+
+    let spe_spi_cs_n = Output::new(dp.PB12, Level::High, Speed::High);
+    let spe_spi_sclk = dp.PB13;
+    let spe_spi_miso = dp.PB14;
+    let spe_spi_mosi = dp.PB15;
+
+    // Don't turn the clock to high, clock must fit within the system clock as we get a runtime panic.
+    let mut spi_config = SPI_Config::default();
+    spi_config.frequency = Hertz(25_000_000);
+
+    let spe_spi: SpeSpi = Spi::new(
+        dp.SPI2,
+        spe_spi_sclk,
+        spe_spi_mosi,
+        spe_spi_miso,
+        dp.DMA1_CH1,
+        dp.DMA1_CH2,
+        spi_config,
+    );
+    let spe_spi = SpeSpiCs::new(spe_spi, spe_spi_cs_n, Delay);
+
+    let cfg0_without_crc = spe_cfg0.is_high();
+    let cfg1_spi_mode = spe_cfg1.is_high();
+
+    defmt::println!(
+        "ADIN1110: CFG SPI-MODE 1-{}, CRC-bit 0-{}",
+        cfg1_spi_mode,
+        cfg0_without_crc
+    );
+
+    // Check the SPI mode selected with the "HW CFG" dip-switch
+    if !cfg1_spi_mode {
+        error!("Driver doesn´t support SPI Protolcol \"OPEN Alliance\".\nplease use the \"Generic SPI\"! Turn On \"HW CFG\": \"SPI_CFG1\"");
+        loop {
+            led_uc2_red.toggle();
+            Timer::after(Duration::from_hz(10)).await;
+        }
+    };
+
+    let state = make_static!(embassy_net_adin1110::State::<8, 8>::new());
+
+    let (device, runner) =
+        embassy_net_adin1110::new(MAC, state, spe_spi, spe_int, spe_reset_n, !cfg0_without_crc).await;
+
+    // Start task blink_led
+    unwrap!(spawner.spawn(heartbeat_led(led_uc3_yellow)));
+    // Start task temperature measurement
+    unwrap!(spawner.spawn(temp_task(temp_sens_i2c, led_uc4_blue)));
+    // Start ethernet task
+    unwrap!(spawner.spawn(ethernet_task(runner)));
+
+    let mut rng = Rng::new(dp.RNG, Irqs);
+    // Generate random seed
+    let seed = rng.next_u64();
+
+    let ip_cfg = if uc_cfg0.is_low() {
+        println!("Waiting for DHCP...");
+        let dhcp4_config = embassy_net::DhcpConfig::default();
+        embassy_net::Config::dhcpv4(dhcp4_config)
+    } else {
+        embassy_net::Config::ipv4_static(StaticConfigV4 {
+            address: IP_ADDRESS,
+            gateway: None,
+            dns_servers: Vec::new(),
+        })
+    };
+
+    // Init network stack
+    let stack = &*make_static!(Stack::new(
+        device,
+        ip_cfg,
+        make_static!(StackResources::<2>::new()),
+        seed
+    ));
+
+    // Launch network task
+    unwrap!(spawner.spawn(net_task(stack)));
+
+    let cfg = wait_for_config(stack).await;
+    let local_addr = cfg.address.address();
+
+    // Then we can use it!
+    let mut rx_buffer = [0; 4096];
+    let mut tx_buffer = [0; 4096];
+    let mut mb_buf = [0; 4096];
+    loop {
+        let mut socket = TcpSocket::new(stack, &mut rx_buffer, &mut tx_buffer);
+        socket.set_timeout(Some(Duration::from_secs(1)));
+
+        info!("Listening on http://{}:{}...", local_addr, HTTP_LISTEN_PORT);
+        if let Err(e) = socket.accept(HTTP_LISTEN_PORT).await {
+            defmt::error!("accept error: {:?}", e);
+            continue;
+        }
+
+        loop {
+            let _n = match socket.read(&mut mb_buf).await {
+                Ok(0) => {
+                    defmt::info!("read EOF");
+                    break;
+                }
+                Ok(n) => n,
+                Err(e) => {
+                    defmt::error!("{:?}", e);
+                    break;
+                }
+            };
+            led_uc2_red.set_low();
+
+            let status_line = "HTTP/1.1 200 OK";
+            let contents = PAGE;
+            let length = contents.len();
+
+            let _ = write!(
+                &mut mb_buf[..],
+                "{status_line}\r\nContent-Length: {length}\r\n\r\n{contents}\r\n\0"
+            );
+            let loc = mb_buf.iter().position(|v| *v == b'#').unwrap();
+
+            let temp = TEMP.load(Ordering::Relaxed);
+            let cel = temp / 1000;
+            let mcel = temp % 1000;
+
+            info!("{}.{}", cel, mcel);
+
+            let _ = write!(&mut mb_buf[loc..loc + 7], "{cel}.{mcel}");
+
+            let n = mb_buf.iter().position(|v| *v == 0).unwrap();
+
+            if let Err(e) = socket.write_all(&mb_buf[..n]).await {
+                error!("write error: {:?}", e);
+                break;
+            }
+
+            led_uc2_red.set_high();
+        }
+    }
+}
+
+async fn wait_for_config(stack: &'static Stack<Device<'static>>) -> embassy_net::StaticConfigV4 {
+    loop {
+        if let Some(config) = stack.config_v4() {
+            return config;
+        }
+        yield_now().await;
+    }
+}
+
+#[embassy_executor::task]
+async fn heartbeat_led(mut led: Output<'static, peripherals::PE6>) {
+    let mut tmr = Ticker::every(Duration::from_hz(3));
+    loop {
+        led.toggle();
+        tmr.next().await;
+    }
+}
+
+// ADT7422
+#[embassy_executor::task]
+async fn temp_task(temp_dev_i2c: TempSensI2c, mut led: Output<'static, peripherals::PG15>) -> ! {
+    let mut tmr = Ticker::every(Duration::from_hz(1));
+    let mut temp_sens = ADT7422::new(temp_dev_i2c, 0x48).unwrap();
+
+    loop {
+        led.set_low();
+        match select(temp_sens.read_temp(), Timer::after(Duration::from_millis(500))).await {
+            Either::First(i2c_ret) => match i2c_ret {
+                Ok(value) => {
+                    led.set_high();
+                    let temp = i32::from(value);
+                    println!("TEMP: {:04x}, {}", temp, temp * 78 / 10);
+                    TEMP.store(temp * 78 / 10, Ordering::Relaxed);
+                }
+                Err(e) => defmt::println!("ADT7422: {}", e),
+            },
+            Either::Second(_) => println!("Timeout"),
+        }
+
+        tmr.next().await;
+    }
+}
+
+#[embassy_executor::task]
+async fn ethernet_task(runner: Runner<'static, SpeSpiCs, SpeInt, SpeRst>) -> ! {
+    runner.run().await
+}
+
+#[embassy_executor::task]
+async fn net_task(stack: &'static Stack<Device<'static>>) -> ! {
+    stack.run().await
+}
+
+// same panicking *behavior* as `panic-probe` but doesn't print a panic message
+// this prevents the panic message being printed *twice* when `defmt::panic` is invoked
+#[defmt::panic_handler]
+fn panic() -> ! {
+    cortex_m::asm::udf()
+}
+
+#[allow(non_camel_case_types)]
+#[repr(C)]
+pub enum Registers {
+    Temp_MSB = 0x00,
+    Temp_LSB,
+    Status,
+    Cfg,
+    T_HIGH_MSB,
+    T_HIGH_LSB,
+    T_LOW_MSB,
+    T_LOW_LSB,
+    T_CRIT_MSB,
+    T_CRIT_LSB,
+    T_HYST,
+    ID,
+    SW_RESET = 0x2F,
+}
+
+pub struct ADT7422<'d, BUS: I2cBus> {
+    addr: u8,
+    phantom: PhantomData<&'d ()>,
+    bus: BUS,
+}
+
+#[derive(Debug, Format)]
+pub enum Error<I2cError: Format> {
+    I2c(I2cError),
+    Address,
+}
+
+impl<'d, BUS> ADT7422<'d, BUS>
+where
+    BUS: I2cBus,
+    BUS::Error: Format,
+{
+    pub fn new(bus: BUS, addr: u8) -> Result<Self, Error<BUS::Error>> {
+        if !(0x48..=0x4A).contains(&addr) {
+            return Err(Error::Address);
+        }
+
+        Ok(Self {
+            bus,
+            phantom: PhantomData,
+            addr,
+        })
+    }
+
+    pub async fn init(&mut self) -> Result<(), Error<BUS::Error>> {
+        let mut cfg = 0b000_0000;
+        // if self.int.is_some() {
+        //     // Set 1 SPS mode
+        //     cfg |= 0b10 << 5;
+        // } else {
+        // One shot mode
+        cfg |= 0b01 << 5;
+        // }
+
+        self.write_cfg(cfg).await
+    }
+
+    pub async fn read(&mut self, reg: Registers) -> Result<u8, Error<BUS::Error>> {
+        let mut buffer = [0u8; 1];
+        self.bus
+            .write_read(self.addr, &[reg as u8], &mut buffer)
+            .await
+            .map_err(Error::I2c)?;
+        Ok(buffer[0])
+    }
+
+    pub async fn write_cfg(&mut self, cfg: u8) -> Result<(), Error<BUS::Error>> {
+        let buf = [Registers::Cfg as u8, cfg];
+        self.bus.write(self.addr, &buf).await.map_err(Error::I2c)
+    }
+
+    pub async fn read_temp(&mut self) -> Result<i16, Error<BUS::Error>> {
+        let mut buffer = [0u8; 2];
+
+        // if let Some(int) = &mut self.int {
+        //     // Wait for interrupt
+        //     int.wait_for_low().await.unwrap();
+        // } else {
+        // Start: One shot
+        let cfg = 0b01 << 5;
+        self.write_cfg(cfg).await?;
+        Timer::after(Duration::from_millis(250)).await;
+        self.bus
+            .write_read(self.addr, &[Registers::Temp_MSB as u8], &mut buffer)
+            .await
+            .map_err(Error::I2c)?;
+        Ok(i16::from_be_bytes(buffer))
+    }
+}
+
+// Web page
+const PAGE: &str = r#"<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta http-equiv="refresh" content="1" >
+    <title>ADIN1110 with Rust</title>
+  </head>
+  <body>
+    <p>EVAL-ADIN1110EBZ</p>
+    <table><td>Temp Sensor ADT7422:</td><td> #00.00  &deg;C</td></table>
+  </body>
+</html>"#;