442 lines
13 KiB
Rust
442 lines
13 KiB
Rust
#![no_main]
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#![no_std]
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#![deny(clippy::pedantic)]
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#![allow(clippy::doc_markdown)]
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#![allow(clippy::missing_errors_doc)]
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// This example works on a ANALOG DEVICE EVAL-ADIN110EBZ board.
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// Settings switch S201 "HW CFG":
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// - Without SPI CRC: OFF-ON-OFF-OFF-OFF
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// - With SPI CRC: ON -ON-OFF-OFF-OFF
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// Settings switch S303 "uC CFG":
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// - CFG0: On = static ip, Off = Dhcp
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// - CFG1: Ethernet `FCS` on TX path: On, Off
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// The webserver shows the actual temperature of the onboard i2c temp sensor.
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use core::marker::PhantomData;
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use core::sync::atomic::{AtomicI32, Ordering};
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use defmt::{error, info, println, unwrap, Format};
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use defmt_rtt as _; // global logger
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use embassy_executor::Spawner;
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use embassy_futures::select::{select, Either};
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use embassy_futures::yield_now;
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use embassy_net::tcp::TcpSocket;
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use embassy_net::{Ipv4Address, Ipv4Cidr, Stack, StackResources, StaticConfigV4};
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use embassy_net_adin1110::{Device, Runner, ADIN1110};
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use embassy_stm32::gpio::{Input, Level, Output, Pull, Speed};
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use embassy_stm32::i2c::{self, Config as I2C_Config, I2c};
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use embassy_stm32::mode::Async;
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use embassy_stm32::rng::{self, Rng};
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use embassy_stm32::spi::{Config as SPI_Config, Spi};
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use embassy_stm32::time::Hertz;
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use embassy_stm32::{bind_interrupts, exti, pac, peripherals};
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use embassy_time::{Delay, Duration, Ticker, Timer};
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use embedded_hal_async::i2c::I2c as I2cBus;
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use embedded_hal_bus::spi::ExclusiveDevice;
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use embedded_io::Write as bWrite;
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use embedded_io_async::Write;
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use heapless::Vec;
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use panic_probe as _;
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use rand::RngCore;
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use static_cell::StaticCell;
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bind_interrupts!(struct Irqs {
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I2C3_EV => i2c::EventInterruptHandler<peripherals::I2C3>;
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I2C3_ER => i2c::ErrorInterruptHandler<peripherals::I2C3>;
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RNG => rng::InterruptHandler<peripherals::RNG>;
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});
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// Basic settings
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// MAC-address used by the adin1110
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const MAC: [u8; 6] = [0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff];
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// Static IP settings
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const IP_ADDRESS: Ipv4Cidr = Ipv4Cidr::new(Ipv4Address::new(192, 168, 1, 5), 24);
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// Listen port for the webserver
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const HTTP_LISTEN_PORT: u16 = 80;
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pub type SpeSpi = Spi<'static, Async>;
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pub type SpeSpiCs = ExclusiveDevice<SpeSpi, Output<'static>, Delay>;
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pub type SpeInt = exti::ExtiInput<'static>;
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pub type SpeRst = Output<'static>;
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pub type Adin1110T = ADIN1110<SpeSpiCs>;
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pub type TempSensI2c = I2c<'static, Async>;
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static TEMP: AtomicI32 = AtomicI32::new(0);
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#[embassy_executor::main]
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async fn main(spawner: Spawner) {
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defmt::println!("Start main()");
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let mut config = embassy_stm32::Config::default();
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{
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use embassy_stm32::rcc::*;
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// 80Mhz clock (Source: 8 / SrcDiv: 1 * PllMul 20 / ClkDiv 2)
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// 80MHz highest frequency for flash 0 wait.
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config.rcc.sys = Sysclk::PLL1_R;
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config.rcc.hse = Some(Hse {
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freq: Hertz::mhz(8),
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mode: HseMode::Oscillator,
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});
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config.rcc.pll = Some(Pll {
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source: PllSource::HSE,
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prediv: PllPreDiv::DIV1,
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mul: PllMul::MUL20,
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divp: None,
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divq: None,
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divr: Some(PllRDiv::DIV2), // sysclk 80Mhz clock (8 / 1 * 20 / 2)
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});
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config.rcc.hsi48 = Some(Default::default()); // needed for RNG
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}
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let dp = embassy_stm32::init(config);
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let reset_status = pac::RCC.bdcr().read().0;
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defmt::println!("bdcr before: 0x{:X}", reset_status);
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defmt::println!("Setup IO pins");
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// Setup LEDs
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let _led_uc1_green = Output::new(dp.PC13, Level::Low, Speed::Low);
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let mut led_uc2_red = Output::new(dp.PE2, Level::High, Speed::Low);
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let led_uc3_yellow = Output::new(dp.PE6, Level::High, Speed::Low);
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let led_uc4_blue = Output::new(dp.PG15, Level::High, Speed::Low);
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// Read the uc_cfg switches
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let uc_cfg0 = Input::new(dp.PB2, Pull::None);
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let uc_cfg1 = Input::new(dp.PF11, Pull::None);
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let _uc_cfg2 = Input::new(dp.PG6, Pull::None);
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let _uc_cfg3 = Input::new(dp.PG11, Pull::None);
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// Setup I2C pins
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let temp_sens_i2c = I2c::new(
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dp.I2C3,
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dp.PG7,
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dp.PG8,
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Irqs,
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dp.DMA1_CH6,
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dp.DMA1_CH7,
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Hertz(100_000),
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I2C_Config::default(),
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);
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// Setup IO and SPI for the SPE chip
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let spe_reset_n = Output::new(dp.PC7, Level::Low, Speed::Low);
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let spe_cfg0 = Input::new(dp.PC8, Pull::None);
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let spe_cfg1 = Input::new(dp.PC9, Pull::None);
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let _spe_ts_capt = Output::new(dp.PC6, Level::Low, Speed::Low);
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let spe_int = exti::ExtiInput::new(dp.PB11, dp.EXTI11, Pull::None);
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let spe_spi_cs_n = Output::new(dp.PB12, Level::High, Speed::High);
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let spe_spi_sclk = dp.PB13;
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let spe_spi_miso = dp.PB14;
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let spe_spi_mosi = dp.PB15;
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// Don't turn the clock to high, clock must fit within the system clock as we get a runtime panic.
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let mut spi_config = SPI_Config::default();
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spi_config.frequency = Hertz(25_000_000);
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let spe_spi: SpeSpi = Spi::new(
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dp.SPI2,
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spe_spi_sclk,
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spe_spi_mosi,
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spe_spi_miso,
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dp.DMA1_CH1,
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dp.DMA1_CH2,
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spi_config,
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);
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let spe_spi = SpeSpiCs::new(spe_spi, spe_spi_cs_n, Delay);
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let cfg0_without_crc = spe_cfg0.is_high();
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let cfg1_spi_mode = spe_cfg1.is_high();
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let uc_cfg1_fcs_en = uc_cfg1.is_low();
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defmt::println!(
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"ADIN1110: CFG SPI-MODE 1-{}, CRC-bit 0-{} FCS-{}",
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cfg1_spi_mode,
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cfg0_without_crc,
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uc_cfg1_fcs_en
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);
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// Check the SPI mode selected with the "HW CFG" dip-switch
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if !cfg1_spi_mode {
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error!("Driver doesn´t support SPI Protolcol \"OPEN Alliance\".\nplease use the \"Generic SPI\"! Turn On \"HW CFG\": \"SPI_CFG1\"");
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loop {
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led_uc2_red.toggle();
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Timer::after(Duration::from_hz(10)).await;
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}
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};
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static STATE: StaticCell<embassy_net_adin1110::State<8, 8>> = StaticCell::new();
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let state = STATE.init(embassy_net_adin1110::State::<8, 8>::new());
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let (device, runner) = embassy_net_adin1110::new(
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MAC,
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state,
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spe_spi,
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spe_int,
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spe_reset_n,
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!cfg0_without_crc,
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uc_cfg1_fcs_en,
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)
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.await;
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// Start task blink_led
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unwrap!(spawner.spawn(heartbeat_led(led_uc3_yellow)));
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// Start task temperature measurement
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unwrap!(spawner.spawn(temp_task(temp_sens_i2c, led_uc4_blue)));
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// Start ethernet task
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unwrap!(spawner.spawn(ethernet_task(runner)));
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let mut rng = Rng::new(dp.RNG, Irqs);
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// Generate random seed
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let seed = rng.next_u64();
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let ip_cfg = if uc_cfg0.is_low() {
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println!("Waiting for DHCP...");
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let dhcp4_config = embassy_net::DhcpConfig::default();
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embassy_net::Config::dhcpv4(dhcp4_config)
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} else {
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embassy_net::Config::ipv4_static(StaticConfigV4 {
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address: IP_ADDRESS,
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gateway: None,
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dns_servers: Vec::new(),
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})
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};
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// Init network stack
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static RESOURCES: StaticCell<StackResources<3>> = StaticCell::new();
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let (stack, runner) = embassy_net::new(device, ip_cfg, RESOURCES.init(StackResources::new()), seed);
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// Launch network task
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unwrap!(spawner.spawn(net_task(runner)));
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let cfg = wait_for_config(stack).await;
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let local_addr = cfg.address.address();
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// Then we can use it!
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let mut rx_buffer = [0; 4096];
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let mut tx_buffer = [0; 4096];
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let mut mb_buf = [0; 4096];
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loop {
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let mut socket = TcpSocket::new(stack, &mut rx_buffer, &mut tx_buffer);
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socket.set_timeout(Some(Duration::from_secs(1)));
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info!("Listening on http://{}:{}...", local_addr, HTTP_LISTEN_PORT);
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if let Err(e) = socket.accept(HTTP_LISTEN_PORT).await {
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defmt::error!("accept error: {:?}", e);
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continue;
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}
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loop {
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let _n = match socket.read(&mut mb_buf).await {
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Ok(0) => {
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defmt::info!("read EOF");
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break;
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}
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Ok(n) => n,
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Err(e) => {
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defmt::error!("{:?}", e);
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break;
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}
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};
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led_uc2_red.set_low();
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let status_line = "HTTP/1.1 200 OK";
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let contents = PAGE;
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let length = contents.len();
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let _ = write!(
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&mut mb_buf[..],
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"{status_line}\r\nContent-Length: {length}\r\n\r\n{contents}\r\n\0"
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);
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let loc = mb_buf.iter().position(|v| *v == b'#').unwrap();
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let temp = TEMP.load(Ordering::Relaxed);
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let cel = temp / 1000;
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let mcel = temp % 1000;
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info!("{}.{}", cel, mcel);
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let _ = write!(&mut mb_buf[loc..loc + 7], "{cel}.{mcel}");
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let n = mb_buf.iter().position(|v| *v == 0).unwrap();
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if let Err(e) = socket.write_all(&mb_buf[..n]).await {
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error!("write error: {:?}", e);
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break;
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}
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led_uc2_red.set_high();
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}
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}
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}
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async fn wait_for_config(stack: Stack<'static>) -> embassy_net::StaticConfigV4 {
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loop {
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if let Some(config) = stack.config_v4() {
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return config;
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}
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yield_now().await;
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}
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}
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#[embassy_executor::task]
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async fn heartbeat_led(mut led: Output<'static>) {
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let mut tmr = Ticker::every(Duration::from_hz(3));
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loop {
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led.toggle();
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tmr.next().await;
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}
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}
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// ADT7422
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#[embassy_executor::task]
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async fn temp_task(temp_dev_i2c: TempSensI2c, mut led: Output<'static>) -> ! {
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let mut tmr = Ticker::every(Duration::from_hz(1));
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let mut temp_sens = ADT7422::new(temp_dev_i2c, 0x48).unwrap();
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loop {
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led.set_low();
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match select(temp_sens.read_temp(), Timer::after_millis(500)).await {
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Either::First(i2c_ret) => match i2c_ret {
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Ok(value) => {
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led.set_high();
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let temp = i32::from(value);
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println!("TEMP: {:04x}, {}", temp, temp * 78 / 10);
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TEMP.store(temp * 78 / 10, Ordering::Relaxed);
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}
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Err(e) => defmt::println!("ADT7422: {}", e),
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},
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Either::Second(_) => println!("Timeout"),
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}
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tmr.next().await;
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}
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}
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#[embassy_executor::task]
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async fn ethernet_task(runner: Runner<'static, SpeSpiCs, SpeInt, SpeRst>) -> ! {
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runner.run().await
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}
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#[embassy_executor::task]
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async fn net_task(mut runner: embassy_net::Runner<'static, Device<'static>>) -> ! {
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runner.run().await
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}
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// same panicking *behavior* as `panic-probe` but doesn't print a panic message
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// this prevents the panic message being printed *twice* when `defmt::panic` is invoked
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#[defmt::panic_handler]
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fn panic() -> ! {
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cortex_m::asm::udf()
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}
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#[allow(non_camel_case_types)]
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#[repr(C)]
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pub enum Registers {
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Temp_MSB = 0x00,
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Temp_LSB,
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Status,
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Cfg,
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T_HIGH_MSB,
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T_HIGH_LSB,
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T_LOW_MSB,
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T_LOW_LSB,
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T_CRIT_MSB,
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T_CRIT_LSB,
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T_HYST,
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ID,
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SW_RESET = 0x2F,
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}
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pub struct ADT7422<'d, BUS: I2cBus> {
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addr: u8,
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phantom: PhantomData<&'d ()>,
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bus: BUS,
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}
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#[derive(Debug, Format, PartialEq, Eq)]
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pub enum Error<I2cError: Format> {
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I2c(I2cError),
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Address,
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}
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impl<'d, BUS> ADT7422<'d, BUS>
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where
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BUS: I2cBus,
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BUS::Error: Format,
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{
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pub fn new(bus: BUS, addr: u8) -> Result<Self, Error<BUS::Error>> {
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if !(0x48..=0x4A).contains(&addr) {
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return Err(Error::Address);
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}
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Ok(Self {
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bus,
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phantom: PhantomData,
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addr,
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})
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}
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pub async fn init(&mut self) -> Result<(), Error<BUS::Error>> {
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let mut cfg = 0b000_0000;
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// if self.int.is_some() {
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// // Set 1 SPS mode
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// cfg |= 0b10 << 5;
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// } else {
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// One shot mode
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cfg |= 0b01 << 5;
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// }
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self.write_cfg(cfg).await
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}
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pub async fn read(&mut self, reg: Registers) -> Result<u8, Error<BUS::Error>> {
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let mut buffer = [0u8; 1];
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self.bus
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.write_read(self.addr, &[reg as u8], &mut buffer)
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.await
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.map_err(Error::I2c)?;
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Ok(buffer[0])
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}
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pub async fn write_cfg(&mut self, cfg: u8) -> Result<(), Error<BUS::Error>> {
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let buf = [Registers::Cfg as u8, cfg];
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self.bus.write(self.addr, &buf).await.map_err(Error::I2c)
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}
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pub async fn read_temp(&mut self) -> Result<i16, Error<BUS::Error>> {
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let mut buffer = [0u8; 2];
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// if let Some(int) = &mut self.int {
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// // Wait for interrupt
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// int.wait_for_low().await.unwrap();
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// } else {
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// Start: One shot
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let cfg = 0b01 << 5;
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self.write_cfg(cfg).await?;
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Timer::after_millis(250).await;
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self.bus
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.write_read(self.addr, &[Registers::Temp_MSB as u8], &mut buffer)
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.await
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.map_err(Error::I2c)?;
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Ok(i16::from_be_bytes(buffer))
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}
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}
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// Web page
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const PAGE: &str = r#"<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<meta http-equiv="refresh" content="1" >
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<title>ADIN1110 with Rust</title>
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</head>
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<body>
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<p>EVAL-ADIN1110EBZ</p>
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<table><td>Temp Sensor ADT7422:</td><td> #00.00 °C</td></table>
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</body>
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</html>"#;
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