forked from renet/ENC424J600
Harry Ho
d399ebc3df
* The user can now run a Nix shell to run the examples, OpenOCD and `itmdump` with Shell script binaries; use `run-help` for the list of these binaries. * This includes a `itmdump` v0.3.1 binary re-compiled with patches for Rust >=1.41.0.
252 lines
8.0 KiB
Rust
252 lines
8.0 KiB
Rust
#![no_std]
|
|
#![no_main]
|
|
|
|
use core::env;
|
|
|
|
extern crate panic_itm;
|
|
use cortex_m::iprintln;
|
|
|
|
use cortex_m_rt::entry;
|
|
use embedded_hal::digital::v2::OutputPin;
|
|
use stm32f4xx_hal::{
|
|
rcc::RccExt,
|
|
gpio::GpioExt,
|
|
time::U32Ext,
|
|
stm32::{CorePeripherals, Peripherals},
|
|
spi::Spi
|
|
};
|
|
use enc424j600;
|
|
use enc424j600::EthController;
|
|
use enc424j600::smoltcp_phy;
|
|
|
|
use smoltcp::wire::{
|
|
EthernetAddress, IpAddress, IpCidr
|
|
};
|
|
use smoltcp::iface::{NeighborCache, EthernetInterfaceBuilder};
|
|
use smoltcp::socket::{SocketSet, TcpSocket, TcpSocketBuffer};
|
|
use smoltcp::time::{Instant, Duration};
|
|
use core::str;
|
|
use core::fmt::Write;
|
|
|
|
use core::cell::RefCell;
|
|
use cortex_m::interrupt::Mutex;
|
|
use cortex_m_rt::exception;
|
|
use stm32f4xx_hal::{
|
|
rcc::Clocks,
|
|
time::MilliSeconds,
|
|
timer::{Timer, Event as TimerEvent},
|
|
stm32::SYST,
|
|
};
|
|
/// Rate in Hz
|
|
const TIMER_RATE: u32 = 20;
|
|
/// Interval duration in milliseconds
|
|
const TIMER_DELTA: u32 = 1000 / TIMER_RATE;
|
|
/// Elapsed time in milliseconds
|
|
static TIMER_MS: Mutex<RefCell<u32>> = Mutex::new(RefCell::new(0));
|
|
|
|
/// Setup SysTick exception
|
|
fn timer_setup(syst: SYST, clocks: Clocks) {
|
|
let mut timer = Timer::syst(syst, TIMER_RATE.hz(), clocks);
|
|
timer.listen(TimerEvent::TimeOut);
|
|
}
|
|
|
|
/// SysTick exception (Timer)
|
|
#[exception]
|
|
fn SysTick() {
|
|
cortex_m::interrupt::free(|cs| {
|
|
*TIMER_MS.borrow(cs)
|
|
.borrow_mut() += TIMER_DELTA;
|
|
});
|
|
}
|
|
|
|
/// Obtain current time in milliseconds
|
|
pub fn timer_now() -> MilliSeconds {
|
|
let ms = cortex_m::interrupt::free(|cs| {
|
|
*TIMER_MS.borrow(cs)
|
|
.borrow()
|
|
});
|
|
ms.ms()
|
|
}
|
|
|
|
#[entry]
|
|
fn main() -> ! {
|
|
let mut cp = CorePeripherals::take().unwrap();
|
|
cp.SCB.enable_icache();
|
|
cp.SCB.enable_dcache(&mut cp.CPUID);
|
|
|
|
let dp = Peripherals::take().unwrap();
|
|
let clocks = dp.RCC.constrain()
|
|
.cfgr
|
|
.sysclk(168.mhz())
|
|
.hclk(168.mhz())
|
|
.pclk1(32.mhz())
|
|
.pclk2(64.mhz())
|
|
.freeze();
|
|
|
|
// Init ITM & use Stimulus Port 0
|
|
let mut itm = cp.ITM;
|
|
let stim0 = &mut itm.stim[0];
|
|
|
|
iprintln!(stim0,
|
|
"Eth TCP Server on STM32-F407 via NIC100/ENC424J600");
|
|
|
|
// Get IP address from args
|
|
let arg_ip_raw = env!("ENC424J600_TCP_IP");
|
|
let mut arg_ip_str = arg_ip_raw.split('.');
|
|
let mut arg_ip: [u8; 4] = [0; 4];
|
|
for i in 0..4 {
|
|
match arg_ip_str.next() {
|
|
Some(x) => {
|
|
match x.parse() {
|
|
Ok(x_) => { arg_ip[i] = x_ },
|
|
Err(_) => { panic!("IPv4 address invalid!") }
|
|
}
|
|
},
|
|
None => { panic!("IPv4 address invalid!") }
|
|
}
|
|
}
|
|
// Get IP prefix length from args
|
|
let arg_ip_pref_raw = env!("ENC424J600_TCP_PREF");
|
|
let mut arg_ip_pref: u8 = 0;
|
|
match arg_ip_pref_raw.parse() {
|
|
Ok(x) => { arg_ip_pref = x },
|
|
Err(_) => { panic!("IP prefix length invalid!") }
|
|
}
|
|
|
|
// NIC100 / ENC424J600 Set-up
|
|
let spi1 = dp.SPI1;
|
|
let gpioa = dp.GPIOA.split();
|
|
// Mapping: see Table 9, STM32F407ZG Manual
|
|
let spi1_sck = gpioa.pa5.into_alternate_af5();
|
|
let spi1_miso = gpioa.pa6.into_alternate_af5();
|
|
let spi1_mosi = gpioa.pa7.into_alternate_af5();
|
|
let spi1_nss = gpioa.pa4.into_push_pull_output();
|
|
// Map SPISEL: see Table 1, NIC100 Manual
|
|
let mut spisel = gpioa.pa1.into_push_pull_output();
|
|
spisel.set_high().unwrap();
|
|
spisel.set_low().unwrap();
|
|
// Create SPI1 for HAL
|
|
let spi_eth_port = Spi::spi1(
|
|
spi1, (spi1_sck, spi1_miso, spi1_mosi),
|
|
enc424j600::spi::SPI_MODE, enc424j600::spi::SPI_CLOCK.into(),
|
|
clocks);
|
|
let mut spi_eth = enc424j600::SpiEth::new(spi_eth_port, spi1_nss);
|
|
// Init
|
|
match spi_eth.init_dev() {
|
|
Ok(_) => {
|
|
iprintln!(stim0, "Ethernet initialised.")
|
|
}
|
|
Err(_) => {
|
|
panic!("Ethernet initialisation Failed!")
|
|
}
|
|
}
|
|
|
|
// Setup SysTick
|
|
// Reference to stm32-eth:examples/ip.rs
|
|
timer_setup(cp.SYST, clocks);
|
|
iprintln!(stim0, "Timer initialised.");
|
|
|
|
// Read MAC
|
|
let mut eth_mac_addr: [u8; 6] = [0; 6];
|
|
spi_eth.read_from_mac(&mut eth_mac_addr);
|
|
iprintln!(stim0,
|
|
"MAC Address = {:02x}-{:02x}-{:02x}-{:02x}-{:02x}-{:02x}",
|
|
eth_mac_addr[0], eth_mac_addr[1],
|
|
eth_mac_addr[2], eth_mac_addr[3],
|
|
eth_mac_addr[4], eth_mac_addr[5]);
|
|
|
|
// Init Rx/Tx buffers
|
|
spi_eth.init_rxbuf();
|
|
spi_eth.init_txbuf();
|
|
|
|
// Copied / modified from smoltcp:
|
|
// examples/loopback.rs, examples/multicast.rs
|
|
let device = smoltcp_phy::SmoltcpDevice::new(&mut spi_eth);
|
|
let mut neighbor_cache_entries = [None; 16];
|
|
let mut neighbor_cache = NeighborCache::new(&mut neighbor_cache_entries[..]);
|
|
let ip_addr = IpCidr::new(IpAddress::v4(
|
|
arg_ip[0], arg_ip[1], arg_ip[2], arg_ip[3]), arg_ip_pref);
|
|
let mut ip_addrs = [ip_addr];
|
|
let mut iface = EthernetInterfaceBuilder::new(device)
|
|
.ethernet_addr(EthernetAddress(eth_mac_addr))
|
|
.neighbor_cache(neighbor_cache)
|
|
.ip_addrs(&mut ip_addrs[..])
|
|
.finalize();
|
|
|
|
// Copied / modified from smoltcp:
|
|
// examples/loopback.rs
|
|
let echo_socket = {
|
|
static mut TCP_SERVER_RX_DATA: [u8; 1024] = [0; 1024];
|
|
static mut TCP_SERVER_TX_DATA: [u8; 1024] = [0; 1024];
|
|
let tcp_rx_buffer = TcpSocketBuffer::new(unsafe { &mut TCP_SERVER_RX_DATA[..] });
|
|
let tcp_tx_buffer = TcpSocketBuffer::new(unsafe { &mut TCP_SERVER_TX_DATA[..] });
|
|
TcpSocket::new(tcp_rx_buffer, tcp_tx_buffer)
|
|
};
|
|
let greet_socket = {
|
|
static mut TCP_SERVER_RX_DATA: [u8; 256] = [0; 256];
|
|
static mut TCP_SERVER_TX_DATA: [u8; 256] = [0; 256];
|
|
let tcp_rx_buffer = TcpSocketBuffer::new(unsafe { &mut TCP_SERVER_RX_DATA[..] });
|
|
let tcp_tx_buffer = TcpSocketBuffer::new(unsafe { &mut TCP_SERVER_TX_DATA[..] });
|
|
TcpSocket::new(tcp_rx_buffer, tcp_tx_buffer)
|
|
};
|
|
let mut socket_set_entries = [None, None];
|
|
let mut socket_set = SocketSet::new(&mut socket_set_entries[..]);
|
|
let echo_handle = socket_set.add(echo_socket);
|
|
let greet_handle = socket_set.add(greet_socket);
|
|
iprintln!(stim0,
|
|
"TCP sockets will listen at {}", ip_addr);
|
|
|
|
// Copied / modified from:
|
|
// smoltcp:examples/loopback.rs, examples/server.rs;
|
|
// stm32-eth:examples/ip.rs,
|
|
// git.m-labs.hk/M-Labs/tnetplug
|
|
loop {
|
|
let now = timer_now().0;
|
|
let instant = Instant::from_millis(now as i64);
|
|
match iface.poll(&mut socket_set, instant) {
|
|
Ok(_) => {
|
|
},
|
|
Err(e) => {
|
|
iprintln!(stim0, "[{}] Poll error: {:?}", instant, e)
|
|
}
|
|
}
|
|
// Control the "echoing" socket (:1234)
|
|
{
|
|
let mut socket = socket_set.get::<TcpSocket>(echo_handle);
|
|
if !socket.is_open() {
|
|
iprintln!(stim0,
|
|
"[{}] Listening to port 1234 for echoing, auto-closing in 10s", instant);
|
|
socket.listen(1234).unwrap();
|
|
socket.set_timeout(Some(Duration::from_millis(10000)));
|
|
}
|
|
if socket.can_recv() {
|
|
iprintln!(stim0,
|
|
"[{}] Received packet: {:?}", instant, socket.recv(|buffer| {
|
|
(buffer.len(), str::from_utf8(buffer).unwrap())
|
|
}));
|
|
}
|
|
}
|
|
// Control the "greeting" socket (:4321)
|
|
{
|
|
let mut socket = socket_set.get::<TcpSocket>(greet_handle);
|
|
if !socket.is_open() {
|
|
iprintln!(stim0,
|
|
"[{}] Listening to port 4321 for greeting, \
|
|
please open the port", instant);
|
|
socket.listen(4321).unwrap();
|
|
}
|
|
|
|
if socket.can_send() {
|
|
let greeting = "Welcome to the server demo for STM32-F407!";
|
|
write!(socket, "{}\n", greeting).unwrap();
|
|
iprintln!(stim0,
|
|
"[{}] Greeting sent, socket closed", instant);
|
|
socket.close();
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
unreachable!()
|
|
}
|