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merge into: occheung:master
Branches Tags
occheung:master
occheung:feature/nal
occheung:smoltcp-bump
occheung:nal_support
occheung:feature/booster
renet:master
renet:fix-spi-clk
renet:fix-visibility
renet:fix-spi
renet:fix-nal
renet:fix-cargo
...
pull from: renet:master
Branches Tags
renet:master
renet:fix-spi-clk
renet:fix-visibility
renet:fix-spi
renet:fix-nal
renet:fix-cargo
occheung:master
occheung:feature/nal
occheung:smoltcp-bump
occheung:nal_support
occheung:feature/booster

48 Commits
master ... master

Author SHA1 Message Date
Ryan Summers 0ea7499543
Merge pull request #3 from quartiq/release/0.3.0 
Prepping for release
 2023-07-03 14:51:20 +02:00
Ryan Summers 237009b628 Reverting repo update 2023-07-03 14:48:02 +02:00
Ryan Summers b1f98c3622 Prepping for release 2023-07-03 13:50:06 +02:00
Ryan Summers 753112e7b0
Merge pull request #1 from quartiq/feature/nal-removal 
Removing NAL, reordering dependencies
 2023-07-03 13:45:28 +02:00
Ryan Summers 0ecfe84ea0 Fixing smoltcp features 2023-07-03 13:43:12 +02:00
Ryan Summers 207a75358f Merge branch 'master' into feature/nal-removal 2023-07-03 13:39:50 +02:00
Ryan Summers 21ab601b0d
Merge pull request #2 from quartiq/feature/ci 
Adding CI, format
 2023-07-03 13:37:12 +02:00
Ryan Summers fc43e3b5c5 Fixing example features 2023-07-03 12:32:54 +02:00
Ryan Summers e94d1df1ec Adding dummy commit 2023-07-03 12:28:47 +02:00
Ryan Summers 0fa5c8f81c Enabling features in examples 2023-07-03 12:27:35 +02:00
Ryan Summers ed42d185df Updating example features 2023-07-03 12:26:47 +02:00
Ryan Summers 253a1f6f1d Adding format 2023-07-03 12:25:46 +02:00
Ryan Summers 273cf09ad2 Removing nal module 2023-07-03 12:23:44 +02:00
Ryan Summers fb2fd17277 Removing NAL, reordering dependencies 2023-07-03 12:21:26 +02:00
Harry Ho 512fd154bd nix: Use lib in place of deprecated stdenv.lib 2021-09-02 17:10:03 +08:00
Harry Ho fbcc3778d2 spi: Always delay for NSS setup time 
* Fixes the lack of setup time delay of an fixed-byte command that immediately follows an N-byte command.
* Extra 50ns will be inserted in-between fixed-byte commands but should be acceptable.
 2021-06-23 12:49:21 +08:00
Harry Ho bb6824b944 nal: Remove delay_ns func pointer 2021-06-04 13:21:02 +08:00
Harry Ho d8b1132b8a examples: Replace delay_ns with cortex-m delay 2021-06-03 15:06:24 +08:00
Harry Ho 999ca5f08a spi: Replace delay_ns func pointer with delay on cortex-m 
* SPI NSS nanosecond delays now only takes place on Cortex-M CPUs
 2021-06-03 15:03:43 +08:00
Harry Ho 9de8d77a24 Restore embedded_hal DelayUs for device init 2021-06-03 13:38:59 +08:00
Harry Ho ec20970a50 spi: Impose stricter NSS timing 2021-06-03 12:03:35 +08:00
Harry Ho 35b7924431 spi: Add back NSS high delay conditionally based on opcode type 2021-06-03 11:51:09 +08:00
Harry Ho d05d7f91e2 spi: Simplify all reg reads/writes as rw_n() 2021-06-03 11:51:09 +08:00
Harry Ho 27ba42c4fb spi: Introduce certain 1 & 3-byte opcodes to replace reg read/writes 2021-06-03 11:51:09 +08:00
Harry Ho edb1f64f26 nix: Use itm-tools from nixpkgs-21.05 2021-06-02 14:15:07 +08:00
Harry Ho 40a53cc0d6 spi: Fix Rx/Tx buffer logic & simplify 
* tx/rx: Rename wrap_addr to start_addr for clarity
* Fix RX logic, when advancing the tail pointer, not retrieving the stored RX buffer start address but the default value instead
* Fix TX logic, when advancing the head pointer for next transmission, not retrieving the stored TX buffer end address but the default value instead
* Rename SPI-related const's to match the datasheet: RERXDATA→RRXDATA, WEGPDATA→WGPDATA
* Remove useless const's for SRAM default addresses for TX buffer
* Simplify code
 2021-04-30 17:30:25 +08:00
Harry Ho 6d17703e6b Add Enc424j600::init() for complete initialisation 2021-04-29 17:08:19 +08:00
Harry Ho 78e4d82660 examples: Simplify & fix naming 2021-04-29 17:08:18 +08:00
Harry Ho b9b28f0725 Rename functions & classes for clarity 
* EthController → EthPhy
  * ::receive_next() → ::recv_packet()
  * ::send_raw_packet() → ::send_packet()
* SpiEth -> Enc424j600
  * ::read_from_mac() → ::read_mac_addr()
  * ::write_mac_address() → ::write_mac_addr()
* EthControllerError → Error
  * ::GeneralError → ::RegisterError
* spi::SpiPortError -> spi::Error
 2021-04-29 17:07:28 +08:00
Harry Ho 3529fcd192 Turn EthController trait methods unrelated to PHY into instance methods 2021-04-29 17:03:51 +08:00
Harry Ho 232a08f110 nal: Fix comments & styling 2021-03-17 10:21:18 +08:00
Harry Ho 2eadb652ff nal: Fix infinite loop when TX buffer is full 
* For example, if the PHY linkup is down, instead of looping until resumption of the linkup, a write operation now closes the socket for re-connection in the future
 2021-03-16 10:25:23 +08:00
Harry Ho 6de19f43cc nal: Prevent pushing duplicate handles for the same TcpSocket 2021-03-12 12:36:30 +08:00
Harry Ho 66c3aa534f nal: socket (TcpSocket) → handle; internal_socket → socket 2021-03-12 11:26:07 +08:00
Harry Ho 99899e6657 nal: Fix read/write not pushing erroneous socket back to the stack 
* Based on quartiq's minimq as of 933687c2e4
* In minimq applications, a socket is expected to be returned when `nal::TcpStack::open()` is called
  * `MqttClient::read()`/`write()` takes away the TCP socket handle (wrapped as an `Option`) from its `RefCell`, and then calls `nal::TcpStack::read()`/`write()`; if NAL returns `nb::Error`, then the MQTT client will propagate and return the error, leaving `None` behind
  * Afterwards, when `MqttClient::socket_is_connected()` gets called (e.g. while polling the interface), it will detect that the socket handle is `None`, and attempt to call `nal::TcpStack::open()`
  * Since `open()` pops a socket from the array (`unused_handles`), when implementing this NAL the socket should have been pushed back to the stack, i.e. by `close()`; this prevents any future calls of `open()` from returning `NetworkError::NoSocket` due to emptiness of the array of socket handles
 2021-03-11 17:32:44 +08:00
Harry Ho d9e50bbcb6 nal: Prevent looping until the stack successfully connects to remote 
* `NetworkStack::connect()`:
  * Add timeout for connection attempt
  * Now returns the socket at TCP ESTABLISHED or CLOSED states, or after connection timeout
* Split `NetworkStack::update()` into `update()` (for controlling the clock) and `poll()` (for polling the smoltcp EthernetInterface)
* Also remove option `auto_time_update`; the main application is responsible for what values `embedded_time::clock::Clock::try_now()` should return
 2021-03-05 14:52:57 +08:00
Harry Ho 6506562c3a cargo: fix [package] meta 2021-01-28 17:56:14 +08:00
Harry Ho 3d471bff0a cargo: cleanup features 2021-01-28 17:56:13 +08:00
occheung b6d1b3828a feature: add nal support 2021-01-26 17:21:53 +08:00
occheung 8da639b89d cargo: bump smoltcp version 2021-01-26 15:41:16 +08:00
occheung 6021623813 lib: add write mac 2021-01-25 18:32:21 +08:00
occheung 1add94c12e Remove cortex-m dependencies for delay (#2) 
Co-Authored-By: occheung <dc@m-labs.hk>
Co-Committed-By: occheung <dc@m-labs.hk>
 2021-01-25 12:35:23 +08:00
Sebastien Bourdeauducq 1ce193b8aa add gitignore 2021-01-20 15:26:48 +08:00
Sebastien Bourdeauducq 04ca484ded remove Cargo lockfile (this is a library) 2021-01-20 15:26:39 +08:00
Sebastien Bourdeauducq 01030f16a8 bump version 2021-01-20 15:22:24 +08:00
occheung 26dabd4dc0 spi: add CS delay 2021-01-18 15:33:27 +08:00
occheung c4b62cc238 lib: derive debug for error for unwrapping 2021-01-18 15:33:03 +08:00
occheung 356c3aefe2 lib: reduce stack usage 2021-01-18 15:32:32 +08:00
14 changed files with 585 additions and 859 deletions
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name: Continuous Integration
on:
push:
branches: [master]
pull_request:
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env:
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jobs:
style:
runs-on: ubuntu-latest
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override: true
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documentation:
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compile:
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uses: actions-rs/cargo@v1
with:
command: build
args: --release --all-features
- name: Cargo Build [Examples]
uses: actions-rs/cargo@v1
with:
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args: --examples --all-features

2
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"cortex-m-rt",
"embedded-hal",
"nb",
"rand_core",
"stm32f4",
"void",
]
[[package]]
name = "syn"
version = "1.0.33"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e8d5d96e8cbb005d6959f119f773bfaebb5684296108fb32600c00cde305b2cd"
dependencies = [
"proc-macro2",
"quote",
"unicode-xid",
]
[[package]]
name = "typenum"
version = "1.12.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "373c8a200f9e67a0c95e62a4f52fbf80c23b4381c05a17845531982fa99e6b33"
[[package]]
name = "unicode-xid"
version = "0.2.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f7fe0bb3479651439c9112f72b6c505038574c9fbb575ed1bf3b797fa39dd564"
[[package]]
name = "vcell"
version = "0.1.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "876e32dcadfe563a4289e994f7cb391197f362b6315dc45e8ba4aa6f564a4b3c"
[[package]]
name = "version_check"
version = "0.9.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b5a972e5669d67ba988ce3dc826706fb0a8b01471c088cb0b6110b805cc36aed"
[[package]]
name = "void"
version = "1.0.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"
[[package]]
name = "volatile-register"
version = "0.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0d67cb4616d99b940db1d6bd28844ff97108b498a6ca850e5b6191a532063286"
dependencies = [
"vcell",
]

35
Cargo.toml
View File

@ -1,9 +1,9 @@
[package] [package]
categories = ["embedded", "no-std"] categories = ["embedded", "no-std"]
name = "enc424j600" name = "enc424j600"
description = "Embbeded Rust Ethernet driver for ENC424J600 Ethernet controller with SPI interface, compatible with STM32F4xx" description = "Embbeded Rust Ethernet driver for ENC424J600 Ethernet controller with SPI interface"
authors = ["Harry Ho <hh@m-labs.hk>"] authors = ["Harry Ho <hh@m-labs.hk>", "Dip Cheung <dc@m-labs.hk>"]
version = "0.1.0" version = "0.3.0"
keywords = ["ethernet", "eth", "enc424j600", "stm32", "stm32f4xx"] keywords = ["ethernet", "eth", "enc424j600", "stm32", "stm32f4xx"]
repository = "https://git.m-labs.hk/M-Labs/ENC424J600" repository = "https://git.m-labs.hk/M-Labs/ENC424J600"
edition = "2018" edition = "2018"
@ -13,33 +13,30 @@ license = "BSD-2-Clause"
volatile-register = "0.2" volatile-register = "0.2"
aligned = "0.3" aligned = "0.3"
embedded-hal = "0.2" embedded-hal = "0.2"
smoltcp = { version = "0.6.0", default-features = false, features = ["proto-ipv4", "proto-ipv6", "socket-icmp", "socket-udp", "socket-tcp", "log", "verbose", "ethernet"], optional = true } smoltcp = { version = "0.7.0", default-features = false, features = [ "socket-raw", "proto-ipv4",
"proto-ipv6", "socket-tcp", "ethernet"], optional = true }
cortex-m = {version = "0.5", optional = true }
# Optional dependencies for building examples # Optional dependencies for building examples
stm32f4xx-hal = { version = "0.8", optional = true } [dev-dependencies]
cortex-m = { version = "0.5", optional = true } stm32f4xx-hal = { version = "0.8", features = ["stm32f407", "rt"] }
cortex-m-rt = { version = "0.6", optional = true } cortex-m-rt = "0.6"
cortex-m-rtic = { version = "0.5.3", optional = true } cortex-m-rtic = "0.5.3"
panic-itm = { version = "0.4", optional = true } panic-itm = "0.4"
log = { version = "0.4", optional = true } log = "0.4"
[features] [features]
smoltcp-phy = ["smoltcp"] smoltcp-phy = ["smoltcp"]
smoltcp-phy-all = [ cortex-m-cpu = ["cortex-m"]
"smoltcp/socket-raw", "smoltcp/socket-udp", "smoltcp/socket-tcp",
"smoltcp/proto-ipv4", "smoltcp/proto-ipv6"
]
# Example-based features
tx_stm32f407 = ["stm32f4xx-hal/stm32f407", "cortex-m", "cortex-m-rtic", "panic-itm", "log"]
tcp_stm32f407 = ["stm32f4xx-hal/stm32f407", "cortex-m", "cortex-m-rt", "cortex-m-rtic", "smoltcp-phy-all", "smoltcp/log", "panic-itm", "log"]
default = [] default = []
[[example]] [[example]]
name = "tx_stm32f407" name = "tx_stm32f407"
required-features = ["tx_stm32f407"] required-features = ["smoltcp", "cortex-m-cpu"]
[[example]] [[example]]
name = "tcp_stm32f407" name = "tcp_stm32f407"
required-features = ["tcp_stm32f407"] required-features = ["smoltcp", "cortex-m-cpu"]
[profile.release] [profile.release]
codegen-units = 1 codegen-units = 1

141
examples/tcp_stm32f407.rs
View File

@ -2,43 +2,31 @@
#![no_main] #![no_main]
extern crate panic_itm; extern crate panic_itm;
use cortex_m::{iprintln, iprint}; use cortex_m::{iprint, iprintln};
use embedded_hal::{ use embedded_hal::{blocking::delay::DelayMs, digital::v2::OutputPin};
digital::v2::OutputPin, use enc424j600::smoltcp_phy;
blocking::delay::DelayMs
};
use stm32f4xx_hal::{ use stm32f4xx_hal::{
rcc::RccExt, delay::Delay, gpio::GpioExt, rcc::RccExt, spi::Spi, stm32::ITM, time::Hertz, time::U32Ext,
gpio::GpioExt,
time::U32Ext,
stm32::ITM,
delay::Delay,
spi::Spi,
time::Hertz
}; };
use enc424j600;
use enc424j600::{smoltcp_phy, EthController};
use smoltcp::wire::{
EthernetAddress, IpAddress, IpCidr, Ipv6Cidr
};
use smoltcp::iface::{NeighborCache, EthernetInterfaceBuilder, EthernetInterface};
use smoltcp::socket::{SocketSet, TcpSocket, TcpSocketBuffer};
use core::str;
use core::fmt::Write; use core::fmt::Write;
use core::str;
use smoltcp::iface::{EthernetInterface, EthernetInterfaceBuilder, NeighborCache};
use smoltcp::socket::{SocketSet, TcpSocket, TcpSocketBuffer};
use smoltcp::wire::{EthernetAddress, IpAddress, IpCidr, Ipv6Cidr};
/// Timer /// Timer
use core::cell::RefCell; use core::cell::RefCell;
use cortex_m::interrupt::Mutex; use cortex_m::interrupt::Mutex;
use cortex_m_rt::exception; use cortex_m_rt::exception;
use smoltcp::time::Instant;
use stm32f4xx_hal::{ use stm32f4xx_hal::{
rcc::Clocks, rcc::Clocks,
stm32::SYST,
time::MilliSeconds, time::MilliSeconds,
timer::{Timer, Event as TimerEvent}, timer::{Event as TimerEvent, Timer},
stm32::SYST
}; };
use smoltcp::time::Instant;
/// Rate in Hz /// Rate in Hz
const TIMER_RATE: u32 = 20; const TIMER_RATE: u32 = 20;
/// Interval duration in milliseconds /// Interval duration in milliseconds
@ -56,31 +44,35 @@ fn timer_setup(syst: SYST, clocks: Clocks) {
#[exception] #[exception]
fn SysTick() { fn SysTick() {
cortex_m::interrupt::free(|cs| { cortex_m::interrupt::free(|cs| {
*TIMER_MS.borrow(cs) *TIMER_MS.borrow(cs).borrow_mut() += TIMER_DELTA;
.borrow_mut() += TIMER_DELTA;
}); });
} }
/// Obtain current time in milliseconds /// Obtain current time in milliseconds
pub fn timer_now() -> MilliSeconds { pub fn timer_now() -> MilliSeconds {
let ms = cortex_m::interrupt::free(|cs| { let ms = cortex_m::interrupt::free(|cs| *TIMER_MS.borrow(cs).borrow());
*TIMER_MS.borrow(cs)
.borrow()
});
ms.ms() ms.ms()
} }
/// ///
use stm32f4xx_hal::{ use stm32f4xx_hal::{
stm32::SPI1,
gpio::{ gpio::{
gpioa::{PA5, PA6, PA7, PA4}, gpioa::{PA4, PA5, PA6, PA7},
Alternate, AF5, Output, PushPull Alternate, Output, PushPull, AF5,
} },
stm32::SPI1,
}; };
type BoosterSpiEth = enc424j600::SpiEth< type SpiEth = enc424j600::Enc424j600<
Spi<SPI1, (PA5<Alternate<AF5>>, PA6<Alternate<AF5>>, PA7<Alternate<AF5>>)>, Spi<
PA4<Output<PushPull>>>; SPI1,
(
PA5<Alternate<AF5>>,
PA6<Alternate<AF5>>,
PA7<Alternate<AF5>>,
),
>,
PA4<Output<PushPull>>,
>;
pub struct NetStorage { pub struct NetStorage {
ip_addrs: [IpCidr; 1], ip_addrs: [IpCidr; 1],
@ -89,21 +81,15 @@ pub struct NetStorage {
static mut NET_STORE: NetStorage = NetStorage { static mut NET_STORE: NetStorage = NetStorage {
// Placeholder for the real IP address, which is initialized at runtime. // Placeholder for the real IP address, which is initialized at runtime.
ip_addrs: [IpCidr::Ipv6( ip_addrs: [IpCidr::Ipv6(Ipv6Cidr::SOLICITED_NODE_PREFIX)],
Ipv6Cidr::SOLICITED_NODE_PREFIX,
)],
neighbor_cache: [None; 8], neighbor_cache: [None; 8],
}; };
#[rtic::app(device = stm32f4xx_hal::stm32, peripherals = true, monotonic = rtic::cyccnt::CYCCNT)] #[rtic::app(device = stm32f4xx_hal::stm32, peripherals = true, monotonic = rtic::cyccnt::CYCCNT)]
const APP: () = { const APP: () = {
struct Resources { struct Resources {
eth_iface: EthernetInterface< eth_iface: EthernetInterface<'static, smoltcp_phy::SmoltcpDevice<SpiEth>>,
'static, itm: ITM,
'static,
'static,
smoltcp_phy::SmoltcpDevice<BoosterSpiEth>>,
itm: ITM
} }
#[init()] #[init()]
@ -115,7 +101,10 @@ const APP: () = {
c.core.DWT.enable_cycle_counter(); c.core.DWT.enable_cycle_counter();
c.core.DCB.enable_trace(); c.core.DCB.enable_trace();
let clocks = c.device.RCC.constrain() let clocks = c
.device
.RCC
.constrain()
.cfgr .cfgr
.sysclk(168.mhz()) .sysclk(168.mhz())
.hclk(168.mhz()) .hclk(168.mhz())
@ -128,8 +117,7 @@ const APP: () = {
let mut itm = c.core.ITM; let mut itm = c.core.ITM;
let stim0 = &mut itm.stim[0]; let stim0 = &mut itm.stim[0];
iprintln!(stim0, iprintln!(stim0, "Eth TCP Server on STM32-F407 via NIC100/ENC424J600");
"Eth TCP Server on STM32-F407 via NIC100/ENC424J600");
// NIC100 / ENC424J600 Set-up // NIC100 / ENC424J600 Set-up
let spi1 = c.device.SPI1; let spi1 = c.device.SPI1;
@ -149,15 +137,18 @@ const APP: () = {
let eth_iface = { let eth_iface = {
let mut spi_eth = { let mut spi_eth = {
let spi_eth_port = Spi::spi1( let spi_eth_port = Spi::spi1(
spi1, (spi1_sck, spi1_miso, spi1_mosi), spi1,
(spi1_sck, spi1_miso, spi1_mosi),
enc424j600::spi::interfaces::SPI_MODE, enc424j600::spi::interfaces::SPI_MODE,
Hertz(enc424j600::spi::interfaces::SPI_CLOCK_FREQ), Hertz(enc424j600::spi::interfaces::SPI_CLOCK_FREQ),
clocks); clocks,
enc424j600::SpiEth::new(spi_eth_port, spi1_nss) );
SpiEth::new(spi_eth_port, spi1_nss).cpu_freq_mhz(168)
}; };
// Init controller // Init controller
match spi_eth.init_dev(&mut delay) { match spi_eth.reset(&mut delay) {
Ok(_) => { Ok(_) => {
iprintln!(stim0, "Initializing Ethernet...") iprintln!(stim0, "Initializing Ethernet...")
} }
@ -168,14 +159,14 @@ const APP: () = {
// Read MAC // Read MAC
let mut eth_mac_addr: [u8; 6] = [0; 6]; let mut eth_mac_addr: [u8; 6] = [0; 6];
spi_eth.read_from_mac(&mut eth_mac_addr); spi_eth.read_mac_addr(&mut eth_mac_addr);
for i in 0..6 { for i in 0..6 {
let byte = eth_mac_addr[i]; let byte = eth_mac_addr[i];
match i { match i {
0 => iprint!(stim0, "MAC Address = {:02x}-", byte), 0 => iprint!(stim0, "MAC Address = {:02x}-", byte),
1..=4 => iprint!(stim0, "{:02x}-", byte), 1..=4 => iprint!(stim0, "{:02x}-", byte),
5 => iprint!(stim0, "{:02x}\n", byte), 5 => iprint!(stim0, "{:02x}\n", byte),
_ => () _ => (),
}; };
} }
@ -208,10 +199,7 @@ const APP: () = {
timer_setup(delay.free(), clocks); timer_setup(delay.free(), clocks);
iprintln!(stim0, "Timer initialized"); iprintln!(stim0, "Timer initialized");
init::LateResources { init::LateResources { eth_iface, itm }
eth_iface,
itm
}
} }
#[idle(resources=[eth_iface, itm])] #[idle(resources=[eth_iface, itm])]
@ -241,8 +229,11 @@ const APP: () = {
let greet_handle = socket_set.add(greet_socket); let greet_handle = socket_set.add(greet_socket);
{ {
let store = unsafe { &mut NET_STORE }; let store = unsafe { &mut NET_STORE };
iprintln!(stim0, iprintln!(
"TCP sockets will listen at {}", store.ip_addrs[0].address()); stim0,
"TCP sockets will listen at {}",
store.ip_addrs[0].address()
);
} }
// Copied / modified from: // Copied / modified from:
@ -254,8 +245,7 @@ const APP: () = {
let now = timer_now().0; let now = timer_now().0;
let instant = Instant::from_millis(now as i64); let instant = Instant::from_millis(now as i64);
match iface.poll(&mut socket_set, instant) { match iface.poll(&mut socket_set, instant) {
Ok(_) => { Ok(_) => {}
},
Err(e) => { Err(e) => {
iprintln!(stim0, "[{}] Poll error: {:?}", instant, e) iprintln!(stim0, "[{}] Poll error: {:?}", instant, e)
} }
@ -264,33 +254,40 @@ const APP: () = {
{ {
let mut socket = socket_set.get::<TcpSocket>(echo_handle); let mut socket = socket_set.get::<TcpSocket>(echo_handle);
if !socket.is_open() { if !socket.is_open() {
iprintln!(stim0, iprintln!(
"[{}] Listening to port 1234 for echoing, time-out in 10s", instant); stim0,
"[{}] Listening to port 1234 for echoing, time-out in 10s",
instant
);
socket.listen(1234).unwrap(); socket.listen(1234).unwrap();
socket.set_timeout(Some(smoltcp::time::Duration::from_millis(10000))); socket.set_timeout(Some(smoltcp::time::Duration::from_millis(10000)));
} }
if socket.can_recv() { if socket.can_recv() {
iprintln!(stim0, iprintln!(
"[{}] Received packet: {:?}", instant, socket.recv(|buffer| { stim0,
(buffer.len(), str::from_utf8(buffer).unwrap()) "[{}] Received packet: {:?}",
})); instant,
socket.recv(|buffer| { (buffer.len(), str::from_utf8(buffer).unwrap()) })
);
} }
} }
// Control the "greeting" socket (:4321) // Control the "greeting" socket (:4321)
{ {
let mut socket = socket_set.get::<TcpSocket>(greet_handle); let mut socket = socket_set.get::<TcpSocket>(greet_handle);
if !socket.is_open() { if !socket.is_open() {
iprintln!(stim0, iprintln!(
stim0,
"[{}] Listening to port 4321 for greeting, \ "[{}] Listening to port 4321 for greeting, \
please connect to the port", instant); please connect to the port",
instant
);
socket.listen(4321).unwrap(); socket.listen(4321).unwrap();
} }
if socket.can_send() { if socket.can_send() {
let greeting = "Welcome to the server demo for STM32-F407!"; let greeting = "Welcome to the server demo for STM32-F407!";
write!(socket, "{}\n", greeting).unwrap(); write!(socket, "{}\n", greeting).unwrap();
iprintln!(stim0, iprintln!(stim0, "[{}] Greeting sent, socket closed", instant);
"[{}] Greeting sent, socket closed", instant);
socket.close(); socket.close();
} }
} }

87
examples/tx_stm32f407.rs
View File

@ -2,40 +2,38 @@
#![no_main] #![no_main]
extern crate panic_itm; extern crate panic_itm;
use cortex_m::{iprintln, iprint}; use cortex_m::{iprint, iprintln};
use embedded_hal::{ use embedded_hal::{blocking::delay::DelayMs, digital::v2::OutputPin};
digital::v2::OutputPin, use enc424j600::EthPhy;
blocking::delay::DelayMs
};
use stm32f4xx_hal::{ use stm32f4xx_hal::{
rcc::RccExt, delay::Delay, gpio::GpioExt, rcc::RccExt, spi::Spi, stm32::ITM, time::Hertz, time::U32Ext,
gpio::GpioExt,
time::U32Ext,
stm32::ITM,
delay::Delay,
spi::Spi,
time::Hertz
}; };
use enc424j600;
use enc424j600::EthController;
/// ///
use stm32f4xx_hal::{ use stm32f4xx_hal::{
stm32::SPI1,
gpio::{ gpio::{
gpioa::{PA5, PA6, PA7, PA4}, gpioa::{PA4, PA5, PA6, PA7},
Alternate, AF5, Output, PushPull Alternate, Output, PushPull, AF5,
}, },
stm32::SPI1,
}; };
type BoosterSpiEth = enc424j600::SpiEth< type SpiEth = enc424j600::Enc424j600<
Spi<SPI1, (PA5<Alternate<AF5>>, PA6<Alternate<AF5>>, PA7<Alternate<AF5>>)>, Spi<
PA4<Output<PushPull>>>; SPI1,
(
PA5<Alternate<AF5>>,
PA6<Alternate<AF5>>,
PA7<Alternate<AF5>>,
),
>,
PA4<Output<PushPull>>,
>;
#[rtic::app(device = stm32f4xx_hal::stm32, peripherals = true, monotonic = rtic::cyccnt::CYCCNT)] #[rtic::app(device = stm32f4xx_hal::stm32, peripherals = true, monotonic = rtic::cyccnt::CYCCNT)]
const APP: () = { const APP: () = {
struct Resources { struct Resources {
spi_eth: BoosterSpiEth, spi_eth: SpiEth,
delay: Delay, delay: Delay,
itm: ITM, itm: ITM,
} }
@ -45,7 +43,10 @@ const APP: () = {
c.core.SCB.enable_icache(); c.core.SCB.enable_icache();
c.core.SCB.enable_dcache(&mut c.core.CPUID); c.core.SCB.enable_dcache(&mut c.core.CPUID);
let clocks = c.device.RCC.constrain() let clocks = c
.device
.RCC
.constrain()
.cfgr .cfgr
.sysclk(168.mhz()) .sysclk(168.mhz())
.hclk(168.mhz()) .hclk(168.mhz())
@ -59,8 +60,7 @@ const APP: () = {
// Init ITM // Init ITM
let mut itm = c.core.ITM; let mut itm = c.core.ITM;
let stim0 = &mut itm.stim[0]; let stim0 = &mut itm.stim[0];
iprintln!(stim0, iprintln!(stim0, "Eth TX Pinging on STM32-F407 via NIC100/ENC424J600");
"Eth TX Pinging on STM32-F407 via NIC100/ENC424J600");
// NIC100 / ENC424J600 Set-up // NIC100 / ENC424J600 Set-up
let spi1 = c.device.SPI1; let spi1 = c.device.SPI1;
@ -78,15 +78,18 @@ const APP: () = {
// Create SPI1 for HAL // Create SPI1 for HAL
let mut spi_eth = { let mut spi_eth = {
let spi_eth_port = Spi::spi1( let spi_eth_port = Spi::spi1(
spi1, (spi1_sck, spi1_miso, spi1_mosi), spi1,
(spi1_sck, spi1_miso, spi1_mosi),
enc424j600::spi::interfaces::SPI_MODE, enc424j600::spi::interfaces::SPI_MODE,
Hertz(enc424j600::spi::interfaces::SPI_CLOCK_FREQ), Hertz(enc424j600::spi::interfaces::SPI_CLOCK_FREQ),
clocks); clocks,
enc424j600::SpiEth::new(spi_eth_port, spi1_nss) );
SpiEth::new(spi_eth_port, spi1_nss).cpu_freq_mhz(168)
}; };
// Init // Init
match spi_eth.init_dev(&mut delay) { match spi_eth.reset(&mut delay) {
Ok(_) => { Ok(_) => {
iprintln!(stim0, "Initializing Ethernet...") iprintln!(stim0, "Initializing Ethernet...")
} }
@ -97,14 +100,14 @@ const APP: () = {
// Read MAC // Read MAC
let mut eth_mac_addr: [u8; 6] = [0; 6]; let mut eth_mac_addr: [u8; 6] = [0; 6];
spi_eth.read_from_mac(&mut eth_mac_addr); spi_eth.read_mac_addr(&mut eth_mac_addr);
for i in 0..6 { for i in 0..6 {
let byte = eth_mac_addr[i]; let byte = eth_mac_addr[i];
match i { match i {
0 => iprint!(stim0, "MAC Address = {:02x}-", byte), 0 => iprint!(stim0, "MAC Address = {:02x}-", byte),
1..=4 => iprint!(stim0, "{:02x}-", byte), 1..=4 => iprint!(stim0, "{:02x}-", byte),
5 => iprint!(stim0, "{:02x}\n", byte), 5 => iprint!(stim0, "{:02x}\n", byte),
_ => () _ => (),
}; };
} }
@ -125,20 +128,20 @@ const APP: () = {
let stim0 = &mut c.resources.itm.stim[0]; let stim0 = &mut c.resources.itm.stim[0];
// Testing Eth TX // Testing Eth TX
let eth_tx_dat: [u8; 64] = [ let eth_tx_dat: [u8; 64] = [
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x08, 0x60, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x08, 0x60, 0x6e, 0x44, 0x42, 0x95, 0x08, 0x06,
0x6e, 0x44, 0x42, 0x95, 0x08, 0x06, 0x00, 0x01, 0x00, 0x01, 0x08, 0x00, 0x06, 0x04, 0x00, 0x01, 0x08, 0x60, 0x6e, 0x44, 0x42, 0x95,
0x08, 0x00, 0x06, 0x04, 0x00, 0x01, 0x08, 0x60, 0xc0, 0xa8, 0x01, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc0, 0xa8, 0x01, 0xe7,
0x6e, 0x44, 0x42, 0x95, 0xc0, 0xa8, 0x01, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc0, 0xa8, 0x00, 0x00, 0x00, 0x00, 0x69, 0xd0, 0x85, 0x9f,
0x01, 0xe7, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x69, 0xd0, 0x85, 0x9f
]; ];
loop { loop {
let mut eth_tx_packet = enc424j600::tx::TxPacket::new(); let mut eth_tx_packet = enc424j600::tx::TxPacket::new();
eth_tx_packet.update_frame(&eth_tx_dat, 64); eth_tx_packet.update_frame(&eth_tx_dat, 64);
iprint!(stim0, iprint!(
"Sending packet (len={:}): ", eth_tx_packet.get_frame_length()); stim0,
"Sending packet (len={:}): ",
eth_tx_packet.get_frame_length()
);
for i in 0..20 { for i in 0..20 {
let byte = eth_tx_packet.get_frame_byte(i); let byte = eth_tx_packet.get_frame_byte(i);
match i { match i {
@ -149,10 +152,10 @@ const APP: () = {
13..=14 | 16..=18 => iprint!(stim0, "{:02x}", byte), 13..=14 | 16..=18 => iprint!(stim0, "{:02x}", byte),
5 | 11 | 15 => iprint!(stim0, "{:02x} ", byte), 5 | 11 | 15 => iprint!(stim0, "{:02x} ", byte),
19 => iprint!(stim0, "{:02x} ...\n", byte), 19 => iprint!(stim0, "{:02x} ...\n", byte),
_ => () _ => (),
}; };
} }
c.resources.spi_eth.send_raw_packet(&eth_tx_packet); c.resources.spi_eth.send_packet(&eth_tx_packet);
iprintln!(stim0, "Packet sent"); iprintln!(stim0, "Packet sent");
c.resources.delay.delay_ms(100_u32); c.resources.delay.delay_ms(100_u32);
} }

21
nix/itm-tools.nix
View File

@ -1,21 +0,0 @@
{ stdenv, fetchFromGitHub, rustPlatform, pkg-config }:
rustPlatform.buildRustPackage rec {
version = "2019-11-15";
pname = "itm-tools";
src = fetchFromGitHub {
owner = "japaric";
repo = "itm-tools";
rev = "e94155e44019d893ac8e6dab51cc282d344ab700";
sha256 = "19xkjym0i7y52cfhvis49c59nzvgw4906cd8bkz8ka38mbgfqgiy";
};
cargoPatches = [ ./itm-tools-cargo-lock.patch ];
cargoSha256 = "0is702s14pgvd5i2m8aaw3zcsshqrwj97mjgg3wikbc627pagzg7";
nativeBuildInputs = [ pkg-config ];
doCheck = false;
}

2
nix/rustPlatform.nix
View File

@ -10,7 +10,7 @@ let
]; ];
rustChannel = rustChannel =
lib.rustLib.fromManifestFile rustManifest { lib.rustLib.fromManifestFile rustManifest {
inherit stdenv fetchurl patchelf; inherit stdenv lib fetchurl patchelf;
}; };
rust = rust =
rustChannel.rust.override { rustChannel.rust.override {

4
shell.nix
View File

@ -8,8 +8,6 @@ with pkgs;
let let
rustPlatform = callPackage ./nix/rustPlatform.nix {}; rustPlatform = callPackage ./nix/rustPlatform.nix {};
itm-tools = callPackage ./nix/itm-tools.nix { inherit rustPlatform; };
runHelp = writeShellScriptBin "run-help" '' runHelp = writeShellScriptBin "run-help" ''
echo "[Common Tools]" echo "[Common Tools]"
echo " run-openocd-f4x" echo " run-openocd-f4x"
@ -103,7 +101,7 @@ in
stdenv.mkDerivation { stdenv.mkDerivation {
name = "enc424j600-stm32-env"; name = "enc424j600-stm32-env";
buildInputs = with rustPlatform.rust; [ buildInputs = with rustPlatform.rust; [
rustc cargo pkgs.gdb pkgs.openocd pkgs.tmux itm-tools rustc cargo pkgs.gdb pkgs.openocd pkgs.tmux pkgs.itm-tools
runHelp runTmuxEnv killTmuxEnv runHelp runTmuxEnv killTmuxEnv
runOpenOcdF4x runItmDemuxFollow runOpenOcdF4x runItmDemuxFollow
exTxStm32f407 exTcpStm32f407 exTxStm32f407 exTcpStm32f407

226
src/lib.rs
View File

@ -2,132 +2,175 @@
pub mod spi; pub mod spi;
use embedded_hal::{ use embedded_hal::{
blocking::{ blocking::{delay::DelayUs, spi::Transfer},
spi::Transfer,
delay::DelayUs,
},
digital::v2::OutputPin, digital::v2::OutputPin,
}; };
pub mod rx; pub mod rx;
pub mod tx; pub mod tx;
#[cfg(feature="smoltcp")] #[cfg(feature = "smoltcp")]
pub mod smoltcp_phy; pub mod smoltcp_phy;
/// Max raw frame array size /// Max raw frame array size
pub const RAW_FRAME_LENGTH_MAX: usize = 0x1000; pub const RAW_FRAME_LENGTH_MAX: usize = 1518;
pub trait EthController { /// Trait representing PHY layer of ENC424J600
fn init_dev(&mut self, delay: &mut impl DelayUs<u16>) -> Result<(), EthControllerError>; pub trait EthPhy {
fn init_rxbuf(&mut self) -> Result<(), EthControllerError>; fn recv_packet(&mut self, is_poll: bool) -> Result<rx::RxPacket, Error>;
fn init_txbuf(&mut self) -> Result<(), EthControllerError>; fn send_packet(&mut self, packet: &tx::TxPacket) -> Result<(), Error>;
fn receive_next(&mut self, is_poll: bool) -> Result<rx::RxPacket, EthControllerError>;
fn send_raw_packet(&mut self, packet: &tx::TxPacket) -> Result<(), EthControllerError>;
fn set_promiscuous(&mut self) -> Result<(), EthControllerError>;
fn read_from_mac(&mut self, mac: &mut [u8]) -> Result<(), EthControllerError>;
} }
/// TODO: Improve these error types /// TODO: Improve these error types
pub enum EthControllerError { #[derive(Debug)]
pub enum Error {
SpiPortError, SpiPortError,
GeneralError, RegisterError,
// TODO: Better name? // TODO: Better name?
NoRxPacketError NoRxPacketError,
} }
impl From<spi::SpiPortError> for EthControllerError { impl From<spi::Error> for Error {
fn from(_: spi::SpiPortError) -> EthControllerError { fn from(_: spi::Error) -> Error {
EthControllerError::SpiPortError Error::SpiPortError
} }
} }
/// Ethernet controller using SPI interface /// ENC424J600 controller in SPI mode
pub struct SpiEth<SPI: Transfer<u8>, pub struct Enc424j600<SPI: Transfer<u8>, NSS: OutputPin> {
NSS: OutputPin> {
spi_port: spi::SpiPort<SPI, NSS>, spi_port: spi::SpiPort<SPI, NSS>,
rx_buf: rx::RxBuffer, rx_buf: rx::RxBuffer,
tx_buf: tx::TxBuffer tx_buf: tx::TxBuffer,
} }
impl <SPI: Transfer<u8>, impl<SPI: Transfer<u8>, NSS: OutputPin> Enc424j600<SPI, NSS> {
NSS: OutputPin> SpiEth<SPI, NSS> {
pub fn new(spi: SPI, nss: NSS) -> Self { pub fn new(spi: SPI, nss: NSS) -> Self {
SpiEth { Enc424j600 {
spi_port: spi::SpiPort::new(spi, nss), spi_port: spi::SpiPort::new(spi, nss),
rx_buf: rx::RxBuffer::new(), rx_buf: rx::RxBuffer::new(),
tx_buf: tx::TxBuffer::new() tx_buf: tx::TxBuffer::new(),
} }
} }
}
impl <SPI: Transfer<u8>, #[cfg(feature = "cortex-m-cpu")]
NSS: OutputPin> EthController for SpiEth<SPI, NSS> { pub fn cpu_freq_mhz(mut self, freq: u32) -> Self {
fn init_dev(&mut self, delay: &mut impl DelayUs<u16>) -> Result<(), EthControllerError> { self.spi_port = self.spi_port.cpu_freq_mhz(freq);
self
}
pub fn init(&mut self, delay: &mut impl DelayUs<u16>) -> Result<(), Error> {
self.reset(delay)?;
self.init_rxbuf()?;
self.init_txbuf()?;
Ok(())
}
pub fn reset(&mut self, delay: &mut impl DelayUs<u16>) -> Result<(), Error> {
// Write 0x1234 to EUDAST // Write 0x1234 to EUDAST
self.spi_port.write_reg_16b(spi::addrs::EUDAST, 0x1234)?; self.spi_port.write_reg_16b(spi::addrs::EUDAST, 0x1234)?;
// Verify that EUDAST is 0x1234 // Verify that EUDAST is 0x1234
let mut eudast = self.spi_port.read_reg_16b(spi::addrs::EUDAST)?; let mut eudast = self.spi_port.read_reg_16b(spi::addrs::EUDAST)?;
if eudast != 0x1234 { if eudast != 0x1234 {
return Err(EthControllerError::GeneralError) return Err(Error::RegisterError);
} }
// Poll CLKRDY (ESTAT<12>) to check if it is set // Poll CLKRDY (ESTAT<12>) to check if it is set
loop { loop {
let estat = self.spi_port.read_reg_16b(spi::addrs::ESTAT)?; let estat = self.spi_port.read_reg_16b(spi::addrs::ESTAT)?;
if estat & 0x1000 == 0x1000 { break } if estat & 0x1000 == 0x1000 {
break;
}
} }
// Set ETHRST (ECON2<4>) to 1 // Issue system reset - set ETHRST (ECON2<4>) to 1
let econ2 = self.spi_port.read_reg_8b(spi::addrs::ECON2)?; self.spi_port.send_opcode(spi::opcodes::SETETHRST)?;
self.spi_port.write_reg_8b(spi::addrs::ECON2, 0x10 | (econ2 & 0b11101111))?; delay.delay_us(25);
// Wait for 25us
delay.delay_us(25_u16);
// Verify that EUDAST is 0x0000 // Verify that EUDAST is 0x0000
eudast = self.spi_port.read_reg_16b(spi::addrs::EUDAST)?; eudast = self.spi_port.read_reg_16b(spi::addrs::EUDAST)?;
if eudast != 0x0000 { if eudast != 0x0000 {
return Err(EthControllerError::GeneralError) return Err(Error::RegisterError);
} }
// Wait for 256us delay.delay_us(256);
delay.delay_us(256_u16);
Ok(()) Ok(())
} }
fn init_rxbuf(&mut self) -> Result<(), EthControllerError> { pub fn init_rxbuf(&mut self) -> Result<(), Error> {
// Set ERXST pointer // Set ERXST pointer
self.spi_port.write_reg_16b(spi::addrs::ERXST, self.rx_buf.get_wrap_addr())?; self.spi_port
.write_reg_16b(spi::addrs::ERXST, self.rx_buf.get_start_addr())?;
// Set ERXTAIL pointer // Set ERXTAIL pointer
self.spi_port.write_reg_16b(spi::addrs::ERXTAIL, self.rx_buf.get_tail_addr())?; self.spi_port
.write_reg_16b(spi::addrs::ERXTAIL, self.rx_buf.get_tail_addr())?;
// Set MAMXFL to maximum number of bytes in each accepted packet // Set MAMXFL to maximum number of bytes in each accepted packet
self.spi_port.write_reg_16b(spi::addrs::MAMXFL, RAW_FRAME_LENGTH_MAX as u16)?; self.spi_port
// Enable RXEN (ECON1<0>) .write_reg_16b(spi::addrs::MAMXFL, RAW_FRAME_LENGTH_MAX as u16)?;
let econ1 = self.spi_port.read_reg_16b(spi::addrs::ECON1)?; // Enable RX - set RXEN (ECON1<0>) to 1
self.spi_port.write_reg_16b(spi::addrs::ECON1, 0x1 | (econ1 & 0xfffe))?; self.spi_port.send_opcode(spi::opcodes::ENABLERX)?;
Ok(()) Ok(())
} }
fn init_txbuf(&mut self) -> Result<(), EthControllerError> { pub fn init_txbuf(&mut self) -> Result<(), Error> {
// Set EGPWRPT pointer // Set EGPWRPT pointer
self.spi_port.write_reg_16b(spi::addrs::EGPWRPT, 0x0000)?; self.spi_port.write_reg_16b(spi::addrs::EGPWRPT, 0x0000)?;
Ok(()) Ok(())
} }
/// Set controller to Promiscuous Mode
pub fn set_promiscuous(&mut self) -> Result<(), Error> {
// From Section 10.12, ENC424J600 Data Sheet:
// "To accept all incoming frames regardless of content (Promiscuous mode),
// set the CRCEN, RUNTEN, UCEN, NOTMEEN and MCEN bits."
let erxfcon_lo = self.spi_port.read_reg_8b(spi::addrs::ERXFCON)?;
self.spi_port.write_reg_8b(
spi::addrs::ERXFCON,
0b0101_1110 | (erxfcon_lo & 0b1010_0001),
)?;
Ok(())
}
/// Read MAC to [u8; 6]
pub fn read_mac_addr(&mut self, mac: &mut [u8]) -> Result<(), Error> {
mac[0] = self.spi_port.read_reg_8b(spi::addrs::MAADR1)?;
mac[1] = self.spi_port.read_reg_8b(spi::addrs::MAADR1 + 1)?;
mac[2] = self.spi_port.read_reg_8b(spi::addrs::MAADR2)?;
mac[3] = self.spi_port.read_reg_8b(spi::addrs::MAADR2 + 1)?;
mac[4] = self.spi_port.read_reg_8b(spi::addrs::MAADR3)?;
mac[5] = self.spi_port.read_reg_8b(spi::addrs::MAADR3 + 1)?;
Ok(())
}
pub fn write_mac_addr(&mut self, mac: &[u8]) -> Result<(), Error> {
self.spi_port.write_reg_8b(spi::addrs::MAADR1, mac[0])?;
self.spi_port.write_reg_8b(spi::addrs::MAADR1 + 1, mac[1])?;
self.spi_port.write_reg_8b(spi::addrs::MAADR2, mac[2])?;
self.spi_port.write_reg_8b(spi::addrs::MAADR2 + 1, mac[3])?;
self.spi_port.write_reg_8b(spi::addrs::MAADR3, mac[4])?;
self.spi_port.write_reg_8b(spi::addrs::MAADR3 + 1, mac[5])?;
Ok(())
}
}
impl<SPI: Transfer<u8>, NSS: OutputPin> EthPhy for Enc424j600<SPI, NSS> {
/// Receive the next packet and return it /// Receive the next packet and return it
/// Set is_poll to true for returning until PKTIF is set; /// Set is_poll to true for returning until PKTIF is set;
/// Set is_poll to false for returning Err when PKTIF is not set /// Set is_poll to false for returning Err when PKTIF is not set
fn receive_next(&mut self, is_poll: bool) -> Result<rx::RxPacket, EthControllerError> { fn recv_packet(&mut self, is_poll: bool) -> Result<rx::RxPacket, Error> {
// Poll PKTIF (EIR<4>) to check if it is set // Poll PKTIF (EIR<4>) to check if it is set
loop { loop {
let eir = self.spi_port.read_reg_16b(spi::addrs::EIR)?; let eir = self.spi_port.read_reg_16b(spi::addrs::EIR)?;
if eir & 0x40 == 0x40 { break } if eir & 0x40 == 0x40 {
break;
}
if !is_poll { if !is_poll {
return Err(EthControllerError::NoRxPacketError) return Err(Error::NoRxPacketError);
} }
} }
// Set ERXRDPT pointer to next_addr // Set ERXRDPT pointer to next_addr
self.spi_port.write_reg_16b(spi::addrs::ERXRDPT, self.rx_buf.get_next_addr())?; self.spi_port
.write_reg_16b(spi::addrs::ERXRDPT, self.rx_buf.get_next_addr())?;
// Read 2 bytes to update next_addr // Read 2 bytes to update next_addr
let mut next_addr_buf = [0; 3]; let mut next_addr_buf = [0; 3];
self.spi_port.read_rxdat(&mut next_addr_buf, 2)?; self.spi_port.read_rxdat(&mut next_addr_buf, 2)?;
self.rx_buf.set_next_addr((next_addr_buf[1] as u16) | ((next_addr_buf[2] as u16) << 8)); self.rx_buf
.set_next_addr((next_addr_buf[1] as u16) | ((next_addr_buf[2] as u16) << 8));
// Read 6 bytes to update rsv // Read 6 bytes to update rsv
let mut rsv_buf = [0; 7]; let mut rsv_buf = [0; 7];
self.spi_port.read_rxdat(&mut rsv_buf, 6)?; self.spi_port.read_rxdat(&mut rsv_buf, 6)?;
@ -139,68 +182,61 @@ impl <SPI: Transfer<u8>,
rx_packet.update_frame_length(); rx_packet.update_frame_length();
// Read frame bytes // Read frame bytes
let mut frame_buf = [0; RAW_FRAME_LENGTH_MAX]; let mut frame_buf = [0; RAW_FRAME_LENGTH_MAX];
self.spi_port.read_rxdat(&mut frame_buf, rx_packet.get_frame_length())?; self.spi_port
.read_rxdat(&mut frame_buf, rx_packet.get_frame_length())?;
rx_packet.copy_frame_from(&frame_buf[1..]); rx_packet.copy_frame_from(&frame_buf[1..]);
// Set ERXTAIL pointer to (next_addr - 2) // Set ERXTAIL pointer to (next_addr - 2)
if self.rx_buf.get_next_addr() > rx::ERXST_DEFAULT { // * Assume head, tail, next and wrap addresses are word-aligned (even)
self.spi_port.write_reg_16b(spi::addrs::ERXTAIL, self.rx_buf.get_next_addr() - 2)?; // - If next_addr is at least (start_addr+2), then set tail pointer to the word right before next_addr
if self.rx_buf.get_next_addr() > self.rx_buf.get_start_addr() {
self.spi_port
.write_reg_16b(spi::addrs::ERXTAIL, self.rx_buf.get_next_addr() - 2)?;
// - Otherwise, next_addr will wrap, so set tail pointer to the last word address of RX buffer
} else { } else {
self.spi_port.write_reg_16b(spi::addrs::ERXTAIL, rx::RX_MAX_ADDRESS - 1)?; self.spi_port
.write_reg_16b(spi::addrs::ERXTAIL, rx::RX_MAX_ADDRESS - 1)?;
} }
// Set PKTDEC (ECON1<88>) to decrement PKTCNT // Decrement PKTCNT - set PKTDEC (ECON1<8>)
let econ1_hi = self.spi_port.read_reg_8b(spi::addrs::ECON1 + 1)?; self.spi_port.send_opcode(spi::opcodes::SETPKTDEC)?;
self.spi_port.write_reg_8b(spi::addrs::ECON1 + 1, 0x01 | (econ1_hi & 0xfe))?;
// Return the RxPacket // Return the RxPacket
Ok(rx_packet) Ok(rx_packet)
} }
/// Send an established packet /// Send an established packet
fn send_raw_packet(&mut self, packet: &tx::TxPacket) -> Result<(), EthControllerError> { fn send_packet(&mut self, packet: &tx::TxPacket) -> Result<(), Error> {
// Set EGPWRPT pointer to next_addr // Set EGPWRPT pointer to next_addr
self.spi_port.write_reg_16b(spi::addrs::EGPWRPT, self.tx_buf.get_next_addr())?; self.spi_port
.write_reg_16b(spi::addrs::EGPWRPT, self.tx_buf.get_next_addr())?;
// Copy packet data to SRAM Buffer // Copy packet data to SRAM Buffer
// 1-byte Opcode is included // 1-byte Opcode is included
let mut txdat_buf: [u8; RAW_FRAME_LENGTH_MAX + 1] = [0; RAW_FRAME_LENGTH_MAX + 1]; let mut txdat_buf: [u8; RAW_FRAME_LENGTH_MAX + 1] = [0; RAW_FRAME_LENGTH_MAX + 1];
packet.write_frame_to(&mut txdat_buf[1..]); packet.write_frame_to(&mut txdat_buf[1..]);
self.spi_port.write_txdat(&mut txdat_buf, packet.get_frame_length())?; self.spi_port
.write_txdat(&mut txdat_buf, packet.get_frame_length())?;
// Set ETXST to packet start address // Set ETXST to packet start address
self.spi_port.write_reg_16b(spi::addrs::ETXST, self.tx_buf.get_next_addr())?; self.spi_port
.write_reg_16b(spi::addrs::ETXST, self.tx_buf.get_next_addr())?;
// Set ETXLEN to packet length // Set ETXLEN to packet length
self.spi_port.write_reg_16b(spi::addrs::ETXLEN, packet.get_frame_length() as u16)?; self.spi_port
// Set TXRTS (ECON1<1>) to start transmission .write_reg_16b(spi::addrs::ETXLEN, packet.get_frame_length() as u16)?;
let mut econ1_lo = self.spi_port.read_reg_8b(spi::addrs::ECON1)?; // Send packet - set TXRTS (ECON1<1>) to start transmission
self.spi_port.write_reg_8b(spi::addrs::ECON1, 0x02 | (econ1_lo & 0xfd))?; self.spi_port.send_opcode(spi::opcodes::SETTXRTS)?;
// Poll TXRTS (ECON1<1>) to check if it is reset // Poll TXRTS (ECON1<1>) to check if it is reset
loop { loop {
econ1_lo = self.spi_port.read_reg_8b(spi::addrs::ECON1)?; let econ1_lo = self.spi_port.read_reg_8b(spi::addrs::ECON1)?;
if econ1_lo & 0x02 == 0 { break } if econ1_lo & 0x02 == 0 {
break;
}
} }
// TODO: Read ETXSTAT to understand Ethernet transmission status // TODO: Read ETXSTAT to understand Ethernet transmission status
// (See: Register 9-2, ENC424J600 Data Sheet) // (See: Register 9-2, ENC424J600 Data Sheet)
// Update TX buffer start address // Update TX buffer start address
self.tx_buf.set_next_addr((self.tx_buf.get_next_addr() + packet.get_frame_length() as u16) % // * Assume TX buffer consumes the entire general-purpose SRAM block
tx::GPBUFEN_DEFAULT); self.tx_buf.set_next_addr(
Ok(()) (self.tx_buf.get_next_addr() + packet.get_frame_length() as u16)
} % self.rx_buf.get_start_addr()
- self.tx_buf.get_start_addr(),
/// Set controller to Promiscuous Mode );
fn set_promiscuous(&mut self) -> Result<(), EthControllerError> {
// From Section 10.12, ENC424J600 Data Sheet:
// "To accept all incoming frames regardless of content (Promiscuous mode),
// set the CRCEN, RUNTEN, UCEN, NOTMEEN and MCEN bits."
let erxfcon_lo = self.spi_port.read_reg_8b(spi::addrs::ERXFCON)?;
self.spi_port.write_reg_8b(spi::addrs::ERXFCON, 0b0101_1110 | (erxfcon_lo & 0b1010_0001))?;
Ok(())
}
/// Read MAC to [u8; 6]
fn read_from_mac(&mut self, mac: &mut [u8]) -> Result<(), EthControllerError> {
mac[0] = self.spi_port.read_reg_8b(spi::addrs::MAADR1)?;
mac[1] = self.spi_port.read_reg_8b(spi::addrs::MAADR1 + 1)?;
mac[2] = self.spi_port.read_reg_8b(spi::addrs::MAADR2)?;
mac[3] = self.spi_port.read_reg_8b(spi::addrs::MAADR2 + 1)?;
mac[4] = self.spi_port.read_reg_8b(spi::addrs::MAADR3)?;
mac[5] = self.spi_port.read_reg_8b(spi::addrs::MAADR3 + 1)?;
Ok(()) Ok(())
} }
} }

28
src/rx.rs
View File

@ -11,38 +11,38 @@ pub const RSV_LENGTH: usize = 6;
/// Struct for RX Buffer on the hardware /// Struct for RX Buffer on the hardware
/// TODO: Should be a singleton /// TODO: Should be a singleton
pub struct RxBuffer { pub struct RxBuffer {
wrap_addr: u16, start_addr: u16,
next_addr: u16, next_addr: u16,
tail_addr: u16 tail_addr: u16,
} }
impl RxBuffer { impl RxBuffer {
pub fn new() -> Self { pub fn new() -> Self {
RxBuffer { RxBuffer {
wrap_addr: ERXST_DEFAULT, start_addr: ERXST_DEFAULT,
next_addr: ERXST_DEFAULT, next_addr: ERXST_DEFAULT,
tail_addr: ERXTAIL_DEFAULT tail_addr: ERXTAIL_DEFAULT,
} }
} }
pub fn set_wrap_addr(&mut self, addr: u16) { pub fn set_start_addr(&mut self, addr: u16) {
self.wrap_addr = addr; self.start_addr = addr;
} }
pub fn get_wrap_addr(& self) -> u16{ pub fn get_start_addr(&self) -> u16 {
self.wrap_addr self.start_addr
} }
pub fn set_next_addr(&mut self, addr: u16) { pub fn set_next_addr(&mut self, addr: u16) {
self.next_addr = addr; self.next_addr = addr;
} }
pub fn get_next_addr(& self) -> u16{ pub fn get_next_addr(&self) -> u16 {
self.next_addr self.next_addr
} }
pub fn set_tail_addr(&mut self, addr: u16) { pub fn set_tail_addr(&mut self, addr: u16) {
self.tail_addr = addr; self.tail_addr = addr;
} }
pub fn get_tail_addr(& self) -> u16{ pub fn get_tail_addr(&self) -> u16 {
self.tail_addr self.tail_addr
} }
} }
@ -52,7 +52,7 @@ impl RxBuffer {
pub struct RxPacket { pub struct RxPacket {
rsv: Rsv, rsv: Rsv,
frame: [u8; RAW_FRAME_LENGTH_MAX], frame: [u8; RAW_FRAME_LENGTH_MAX],
frame_length: usize frame_length: usize,
} }
impl RxPacket { impl RxPacket {
@ -60,7 +60,7 @@ impl RxPacket {
RxPacket { RxPacket {
rsv: Rsv::new(), rsv: Rsv::new(),
frame: [0; RAW_FRAME_LENGTH_MAX], frame: [0; RAW_FRAME_LENGTH_MAX],
frame_length: 0 frame_length: 0,
} }
} }
@ -106,14 +106,14 @@ impl RxPacket {
struct Rsv { struct Rsv {
raw_rsv: [u8; RSV_LENGTH], raw_rsv: [u8; RSV_LENGTH],
// TODO: Add more definitions // TODO: Add more definitions
frame_length: u16 frame_length: u16,
} }
impl Rsv { impl Rsv {
fn new() -> Self { fn new() -> Self {
Rsv { Rsv {
raw_rsv: [0; RSV_LENGTH], raw_rsv: [0; RSV_LENGTH],
frame_length: 0_u16 frame_length: 0_u16,
} }
} }

58
src/smoltcp_phy.rs
View File

@ -1,32 +1,30 @@
use crate::{ use crate::{tx, EthPhy, RAW_FRAME_LENGTH_MAX};
EthController, tx, RAW_FRAME_LENGTH_MAX
};
use core::cell; use core::cell;
use smoltcp::{ use smoltcp::{
phy::{Device, DeviceCapabilities, RxToken, TxToken}, phy::{Device, DeviceCapabilities, RxToken, TxToken},
time::Instant, time::Instant,
Error Error,
}; };
pub struct SmoltcpDevice<EC: EthController> { pub struct SmoltcpDevice<E: EthPhy> {
pub eth_controller: cell::RefCell<EC>, pub eth_phy: cell::RefCell<E>,
rx_packet_buf: [u8; RAW_FRAME_LENGTH_MAX], rx_packet_buf: [u8; RAW_FRAME_LENGTH_MAX],
tx_packet_buf: [u8; RAW_FRAME_LENGTH_MAX] tx_packet_buf: [u8; RAW_FRAME_LENGTH_MAX],
} }
impl<EC: EthController> SmoltcpDevice<EC> { impl<E: EthPhy> SmoltcpDevice<E> {
pub fn new(eth_controller: EC) -> Self { pub fn new(eth_phy: E) -> Self {
SmoltcpDevice { SmoltcpDevice {
eth_controller: cell::RefCell::new(eth_controller), eth_phy: cell::RefCell::new(eth_phy),
rx_packet_buf: [0; RAW_FRAME_LENGTH_MAX], rx_packet_buf: [0; RAW_FRAME_LENGTH_MAX],
tx_packet_buf: [0; RAW_FRAME_LENGTH_MAX] tx_packet_buf: [0; RAW_FRAME_LENGTH_MAX],
} }
} }
} }
impl<'a, EC: 'a + EthController> Device<'a> for SmoltcpDevice<EC> { impl<'a, E: 'a + EthPhy> Device<'a> for SmoltcpDevice<E> {
type RxToken = EthRxToken<'a>; type RxToken = EthRxToken<'a>;
type TxToken = EthTxToken<'a, EC>; type TxToken = EthTxToken<'a, E>;
fn capabilities(&self) -> DeviceCapabilities { fn capabilities(&self) -> DeviceCapabilities {
let mut caps = DeviceCapabilities::default(); let mut caps = DeviceCapabilities::default();
@ -35,33 +33,33 @@ impl<'a, EC: 'a + EthController> Device<'a> for SmoltcpDevice<EC> {
} }
fn receive(&'a mut self) -> Option<(Self::RxToken, Self::TxToken)> { fn receive(&'a mut self) -> Option<(Self::RxToken, Self::TxToken)> {
let self_p = (&mut *self) as *mut SmoltcpDevice<EC>; let self_p = (&mut *self) as *mut SmoltcpDevice<E>;
match self.eth_controller.borrow_mut().receive_next(false) { match self.eth_phy.borrow_mut().recv_packet(false) {
Ok(rx_packet) => { Ok(rx_packet) => {
// Write received packet to RX packet buffer // Write received packet to RX packet buffer
rx_packet.write_frame_to(&mut self.rx_packet_buf); rx_packet.write_frame_to(&mut self.rx_packet_buf);
// Construct a RxToken // Construct a RxToken
let rx_token = EthRxToken { let rx_token = EthRxToken {
buf: &mut self.rx_packet_buf, buf: &mut self.rx_packet_buf,
len: rx_packet.get_frame_length() len: rx_packet.get_frame_length(),
}; };
// Construct a blank TxToken // Construct a blank TxToken
let tx_token = EthTxToken { let tx_token = EthTxToken {
buf: &mut self.tx_packet_buf, buf: &mut self.tx_packet_buf,
dev: self_p dev: self_p,
}; };
Some((rx_token, tx_token)) Some((rx_token, tx_token))
}, }
Err(_) => None Err(_) => None,
} }
} }
fn transmit(&'a mut self) -> Option<Self::TxToken> { fn transmit(&'a mut self) -> Option<Self::TxToken> {
let self_p = (&mut *self) as *mut SmoltcpDevice<EC>; let self_p = (&mut *self) as *mut SmoltcpDevice<E>;
// Construct a blank TxToken // Construct a blank TxToken
let tx_token = EthTxToken { let tx_token = EthTxToken {
buf: &mut self.tx_packet_buf, buf: &mut self.tx_packet_buf,
dev: self_p dev: self_p,
}; };
Some(tx_token) Some(tx_token)
} }
@ -69,7 +67,7 @@ impl<'a, EC: 'a + EthController> Device<'a> for SmoltcpDevice<EC> {
pub struct EthRxToken<'a> { pub struct EthRxToken<'a> {
buf: &'a mut [u8], buf: &'a mut [u8],
len: usize len: usize,
} }
impl<'a> RxToken for EthRxToken<'a> { impl<'a> RxToken for EthRxToken<'a> {
@ -81,12 +79,12 @@ impl<'a> RxToken for EthRxToken<'a> {
} }
} }
pub struct EthTxToken<'a, EC: EthController> { pub struct EthTxToken<'a, E: EthPhy> {
buf: &'a mut [u8], buf: &'a mut [u8],
dev: *mut SmoltcpDevice<EC> dev: *mut SmoltcpDevice<E>,
} }
impl<'a, EC: 'a + EthController> TxToken for EthTxToken<'a, EC> { impl<'a, E: 'a + EthPhy> TxToken for EthTxToken<'a, E> {
fn consume<R, F>(self, _timestamp: Instant, len: usize, f: F) -> Result<R, Error> fn consume<R, F>(self, _timestamp: Instant, len: usize, f: F) -> Result<R, Error>
where where
F: FnOnce(&mut [u8]) -> Result<R, Error>, F: FnOnce(&mut [u8]) -> Result<R, Error>,
@ -97,12 +95,10 @@ impl<'a, EC: 'a + EthController> TxToken for EthTxToken<'a, EC> {
// Update frame length and write frame bytes // Update frame length and write frame bytes
tx_packet.update_frame(&mut self.buf[..len], len); tx_packet.update_frame(&mut self.buf[..len], len);
// Send the packet as raw // Send the packet as raw
let eth_controller = unsafe { let eth_phy = unsafe { &mut (*self.dev).eth_phy };
&mut (*self.dev).eth_controller match eth_phy.borrow_mut().send_packet(&tx_packet) {
}; Ok(_) => result,
match eth_controller.borrow_mut().send_raw_packet(&tx_packet) { Err(_) => Err(Error::Exhausted),
Ok(_) => { result },
Err(_) => Err(Error::Exhausted)
} }
} }
} }

272
src/spi.rs
View File

@ -1,7 +1,4 @@
use embedded_hal::{ use embedded_hal::{blocking::spi::Transfer, digital::v2::OutputPin};
blocking::spi::Transfer,
digital::v2::OutputPin,
};
pub mod interfaces { pub mod interfaces {
use embedded_hal::spi; use embedded_hal::spi;
@ -15,181 +12,206 @@ pub mod interfaces {
} }
pub mod opcodes { pub mod opcodes {
/// SPI Opcodes /// 1-byte Instructions
pub const SETETHRST: u8 = 0b1100_1010;
pub const SETPKTDEC: u8 = 0b1100_1100;
pub const SETTXRTS: u8 = 0b1101_0100;
pub const ENABLERX: u8 = 0b1110_1000;
/// 3-byte Instructions
pub const WRXRDPT: u8 = 0b0110_0100; // 8-bit opcode followed by data
pub const RRXRDPT: u8 = 0b0110_0110; // 8-bit opcode followed by data
pub const WGPWRPT: u8 = 0b0110_1100; // 8-bit opcode followed by data
pub const RGPWRPT: u8 = 0b0110_1110; // 8-bit opcode followed by data
/// N-byte Instructions
pub const RCRU: u8 = 0b0010_0000; pub const RCRU: u8 = 0b0010_0000;
pub const WCRU: u8 = 0b0010_0010; pub const WCRU: u8 = 0b0010_0010;
pub const RERXDATA: u8 = 0b0010_1100; // 8-bit opcode followed by data pub const RRXDATA: u8 = 0b0010_1100; // 8-bit opcode followed by data
pub const WEGPDATA: u8 = 0b0010_1010; // 8-bit opcode followed by data pub const WGPDATA: u8 = 0b0010_1010; // 8-bit opcode followed by data
} }
pub mod addrs { pub mod addrs {
/// SPI Register Mapping /// SPI Register Mapping
/// Note: PSP interface use different address mapping /// Note: PSP interface use different address mapping
// SPI Init Reset Registers // SPI Init Reset Registers
pub const EUDAST: u8 = 0x16; // 16-bit data pub const EUDAST: u8 = 0x16; // 16-bit data
pub const ESTAT: u8 = 0x1a; // 16-bit data pub const ESTAT: u8 = 0x1a; // 16-bit data
pub const ECON2: u8 = 0x6e; // 16-bit data pub const ECON2: u8 = 0x6e; // 16-bit data
// //
pub const ERXFCON: u8 = 0x34; // 16-bit data pub const ERXFCON: u8 = 0x34; // 16-bit data
// //
pub const MAADR3: u8 = 0x60; // 16-bit data pub const MAADR3: u8 = 0x60; // 16-bit data
pub const MAADR2: u8 = 0x62; // 16-bit data pub const MAADR2: u8 = 0x62; // 16-bit data
pub const MAADR1: u8 = 0x64; // 16-bit data pub const MAADR1: u8 = 0x64; // 16-bit data
// RX Registers // RX Registers
pub const ERXRDPT: u8 = 0x8a; // 16-bit data pub const ERXRDPT: u8 = 0x8a; // 16-bit data
pub const ERXST: u8 = 0x04; // 16-bit data pub const ERXST: u8 = 0x04; // 16-bit data
pub const ERXTAIL: u8 = 0x06; // 16-bit data pub const ERXTAIL: u8 = 0x06; // 16-bit data
pub const EIR: u8 = 0x1c; // 16-bit data pub const EIR: u8 = 0x1c; // 16-bit data
pub const ECON1: u8 = 0x1e; // 16-bit data pub const ECON1: u8 = 0x1e; // 16-bit data
pub const MAMXFL: u8 = 0x4a; // 16-bit data pub const MAMXFL: u8 = 0x4a; // 16-bit data
// TX Registers // TX Registers
pub const EGPWRPT: u8 = 0x88; // 16-bit data pub const EGPWRPT: u8 = 0x88; // 16-bit data
pub const ETXST: u8 = 0x00; // 16-bit data pub const ETXST: u8 = 0x00; // 16-bit data
pub const ETXSTAT: u8 = 0x12; // 16-bit data pub const ETXSTAT: u8 = 0x12; // 16-bit data
pub const ETXLEN: u8 = 0x02; // 16-bit data pub const ETXLEN: u8 = 0x02; // 16-bit data
} }
/// Struct for SPI I/O interface on ENC424J600 /// Struct for SPI I/O interface on ENC424J600
/// Note: stm32f4xx_hal::spi's pins include: SCK, MISO, MOSI /// Note: stm32f4xx_hal::spi's pins include: SCK, MISO, MOSI
pub struct SpiPort<SPI: Transfer<u8>, pub struct SpiPort<SPI: Transfer<u8>, NSS: OutputPin> {
NSS: OutputPin> {
spi: SPI, spi: SPI,
nss: NSS, nss: NSS,
#[cfg(feature = "cortex-m-cpu")]
cpu_freq_mhz: f32,
} }
pub enum SpiPortError { pub enum Error {
TransferError OpcodeError,
TransferError,
} }
#[allow(unused_must_use)] #[allow(unused_must_use)]
impl <SPI: Transfer<u8>, impl<SPI: Transfer<u8>, NSS: OutputPin> SpiPort<SPI, NSS> {
NSS: OutputPin> SpiPort<SPI, NSS> {
// TODO: return as Result() // TODO: return as Result()
pub fn new(spi: SPI, mut nss: NSS) -> Self { pub fn new(spi: SPI, mut nss: NSS) -> Self {
nss.set_high(); nss.set_high();
SpiPort { SpiPort {
spi, spi,
nss nss,
#[cfg(feature = "cortex-m-cpu")]
cpu_freq_mhz: 0.,
} }
} }
pub fn read_reg_8b(&mut self, addr: u8) -> Result<u8, SpiPortError> { #[cfg(feature = "cortex-m-cpu")]
// Using RCRU instruction to read using unbanked (full) address pub fn cpu_freq_mhz(mut self, freq: u32) -> Self {
let r_data = self.rw_addr_u8(opcodes::RCRU, addr, 0)?; self.cpu_freq_mhz = freq as f32;
Ok(r_data) self
} }
pub fn read_reg_16b(&mut self, lo_addr: u8) -> Result<u16, SpiPortError> { pub fn read_reg_8b(&mut self, addr: u8) -> Result<u8, Error> {
let r_data_lo = self.read_reg_8b(lo_addr)?; // Using RCRU instruction to read using unbanked (full) address
let r_data_hi = self.read_reg_8b(lo_addr + 1)?; let mut buf: [u8; 4] = [0; 4];
// Combine top and bottom 8-bit to return 16-bit buf[1] = addr;
Ok(((r_data_hi as u16) << 8) | r_data_lo as u16) self.rw_n(&mut buf, opcodes::RCRU, 2)?;
Ok(buf[2])
}
pub fn read_reg_16b(&mut self, lo_addr: u8) -> Result<u16, Error> {
// Unless the register can be written with specific opcode,
// use WCRU instruction to write using unbanked (full) address
let mut buf: [u8; 4] = [0; 4];
let mut data_offset = 0; // number of bytes separating
// actual data from opcode
match lo_addr {
addrs::ERXRDPT | addrs::EGPWRPT => {}
_ => {
buf[1] = lo_addr;
data_offset = 1;
}
}
self.rw_n(
&mut buf,
match lo_addr {
addrs::ERXRDPT => opcodes::RRXRDPT,
addrs::EGPWRPT => opcodes::RGPWRPT,
_ => opcodes::RCRU,
},
2 + data_offset, // extra 8-bit lo_addr before data
)?;
Ok(buf[data_offset + 1] as u16 | (buf[data_offset + 2] as u16) << 8)
} }
// Currently requires manual slicing (buf[1..]) for the data read back // Currently requires manual slicing (buf[1..]) for the data read back
pub fn read_rxdat<'a>(&mut self, buf: &'a mut [u8], data_length: usize) pub fn read_rxdat<'a>(&mut self, buf: &'a mut [u8], data_length: usize) -> Result<(), Error> {
-> Result<(), SpiPortError> { self.rw_n(buf, opcodes::RRXDATA, data_length)
let r_valid = self.r_n(buf, opcodes::RERXDATA, data_length)?;
Ok(r_valid)
} }
// Currenly requires actual data to be stored in buf[1..] instead of buf[0..] // Currently requires actual data to be stored in buf[1..] instead of buf[0..]
// TODO: Maybe better naming? // TODO: Maybe better naming?
pub fn write_txdat<'a>(&mut self, buf: &'a mut [u8], data_length: usize) pub fn write_txdat<'a>(&mut self, buf: &'a mut [u8], data_length: usize) -> Result<(), Error> {
-> Result<(), SpiPortError> { self.rw_n(buf, opcodes::WGPDATA, data_length)
let w_valid = self.w_n(buf, opcodes::WEGPDATA, data_length)?;
Ok(w_valid)
} }
pub fn write_reg_8b(&mut self, addr: u8, data: u8) -> Result<(), SpiPortError> { pub fn write_reg_8b(&mut self, addr: u8, data: u8) -> Result<(), Error> {
// TODO: addr should be separated from w_data
// Using WCRU instruction to write using unbanked (full) address // Using WCRU instruction to write using unbanked (full) address
self.rw_addr_u8(opcodes::WCRU, addr, data)?;
Ok(())
}
pub fn write_reg_16b(&mut self, lo_addr: u8, data: u16) -> Result<(), SpiPortError> {
self.write_reg_8b(lo_addr, (data & 0xff) as u8)?;
self.write_reg_8b(lo_addr + 1, ((data & 0xff00) >> 8) as u8)?;
Ok(())
}
// TODO: Generalise transfer functions
// TODO: (Make data read/write as reference to array)
// Currently requires 1-byte addr, read/write data is only 1-byte
fn rw_addr_u8(&mut self, opcode: u8, addr: u8, data: u8)
-> Result<u8, SpiPortError> {
// Enable chip select
self.nss.set_low();
// Start writing to SLAVE
// TODO: don't just use 3 bytes
let mut buf: [u8; 3] = [0; 3]; let mut buf: [u8; 3] = [0; 3];
buf[0] = opcode;
buf[1] = addr; buf[1] = addr;
buf[2] = data; buf[2] = data;
match self.spi.transfer(&mut buf) { self.rw_n(&mut buf, opcodes::WCRU, 2)
Ok(_) => { }
// Disable chip select
self.nss.set_high(); pub fn write_reg_16b(&mut self, lo_addr: u8, data: u16) -> Result<(), Error> {
Ok(buf[2]) // Unless the register can be written with specific opcode,
}, // use WCRU instruction to write using unbanked (full) address
// TODO: Maybe too naive? let mut buf: [u8; 4] = [0; 4];
Err(_) => { let mut data_offset = 0; // number of bytes separating
// Disable chip select // actual data from opcode
self.nss.set_high(); match lo_addr {
Err(SpiPortError::TransferError) addrs::ERXRDPT | addrs::EGPWRPT => {}
_ => {
buf[1] = lo_addr;
data_offset = 1;
} }
} }
buf[1 + data_offset] = data as u8;
buf[2 + data_offset] = (data >> 8) as u8;
self.rw_n(
&mut buf,
match lo_addr {
addrs::ERXRDPT => opcodes::WRXRDPT,
addrs::EGPWRPT => opcodes::WGPWRPT,
_ => opcodes::WCRU,
},
2 + data_offset, // extra 8-bit lo_addr before data
)
}
pub fn send_opcode(&mut self, opcode: u8) -> Result<(), Error> {
match opcode {
opcodes::SETETHRST | opcodes::SETPKTDEC | opcodes::SETTXRTS | opcodes::ENABLERX => {
let mut buf: [u8; 1] = [0];
self.rw_n(&mut buf, opcode, 0)
}
_ => Err(Error::OpcodeError),
}
} }
// TODO: Generalise transfer functions
// Currently does NOT accept addr, read data is N-byte long
// Returns a reference to the data returned
// Note: buf must be at least (data_length + 1)-byte long
// TODO: Check and raise error for array size < (data_length + 1)
fn r_n<'a>(&mut self, buf: &'a mut [u8], opcode: u8, data_length: usize)
-> Result<(), SpiPortError> {
// Enable chip select
self.nss.set_low();
// Start writing to SLAVE
buf[0] = opcode;
match self.spi.transfer(&mut buf[..data_length+1]) {
Ok(_) => {
// Disable chip select
self.nss.set_high();
Ok(())
},
// TODO: Maybe too naive?
Err(_) => {
// Disable chip select
self.nss.set_high();
Err(SpiPortError::TransferError)
}
}
}
// Note: buf[0] is currently reserved for opcode to overwrite
// TODO: Actual data should start from buf[0], not buf[1] // TODO: Actual data should start from buf[0], not buf[1]
fn w_n<'a>(&mut self, buf: &'a mut [u8], opcode: u8, data_length: usize) // Completes an SPI transfer for reading data to the given buffer,
-> Result<(), SpiPortError> { // or writing data from the buffer.
// It sends an 8-bit instruction, followed by either
// receiving or sending n*8-bit data.
// The slice of buffer provided must begin with the 8-bit instruction.
// If n = 0, the transfer will only involve sending the instruction.
fn rw_n<'a>(&mut self, buf: &'a mut [u8], opcode: u8, data_length: usize) -> Result<(), Error> {
assert!(buf.len() > data_length);
// Enable chip select // Enable chip select
self.nss.set_low(); self.nss.set_low();
// >=50ns min. CS_n setup time
#[cfg(feature = "cortex-m-cpu")]
cortex_m::asm::delay((0.05 * (self.cpu_freq_mhz + 1.)) as u32);
// Start writing to SLAVE // Start writing to SLAVE
buf[0] = opcode; buf[0] = opcode;
// TODO: Maybe need to copy data to buf later on let result = self.spi.transfer(&mut buf[..data_length + 1]);
match self.spi.transfer(&mut buf[..data_length+1]) { match opcode {
Ok(_) => { opcodes::RCRU | opcodes::WCRU | opcodes::RRXDATA | opcodes::WGPDATA => {
// Disable chip select // Disable chip select
// >=50ns min. CS_n hold time
#[cfg(feature = "cortex-m-cpu")]
cortex_m::asm::delay((0.05 * (self.cpu_freq_mhz + 1.)) as u32);
self.nss.set_high(); self.nss.set_high();
Ok(()) // >=20ns min. CS_n disable time
}, #[cfg(feature = "cortex-m-cpu")]
// TODO: Maybe too naive? cortex_m::asm::delay((0.02 * (self.cpu_freq_mhz + 1.)) as u32);
Err(_) => {
// Disable chip select
self.nss.set_high();
Err(SpiPortError::TransferError)
} }
_ => {}
}
match result {
Ok(_) => Ok(()),
// TODO: Maybe too naive?
Err(_) => Err(Error::TransferError),
} }
} }
} }

30
src/tx.rs
View File

@ -1,45 +1,41 @@
use crate::RAW_FRAME_LENGTH_MAX; use crate::RAW_FRAME_LENGTH_MAX;
/// SRAM Addresses
pub const GPBUFST_DEFAULT: u16 = 0x0000; // Start of General-Purpose SRAM Buffer
pub const GPBUFEN_DEFAULT: u16 = 0x5340; // End of General-Purpose SRAM Buffer == ERXST default
/// Struct for TX Buffer on the hardware /// Struct for TX Buffer on the hardware
/// TODO: Should be a singleton /// TODO: Should be a singleton
pub struct TxBuffer { pub struct TxBuffer {
wrap_addr: u16, start_addr: u16,
// The following two fields are controlled by firmware // The following two fields are controlled by firmware
next_addr: u16, next_addr: u16,
tail_addr: u16 tail_addr: u16,
} }
impl TxBuffer { impl TxBuffer {
pub fn new() -> Self { pub fn new() -> Self {
TxBuffer { TxBuffer {
wrap_addr: GPBUFST_DEFAULT, start_addr: 0x0000,
next_addr: GPBUFST_DEFAULT + 1, next_addr: 0x0001,
tail_addr: GPBUFST_DEFAULT tail_addr: 0x0000,
} }
} }
pub fn set_wrap_addr(&mut self, addr: u16) { pub fn set_start_addr(&mut self, addr: u16) {
self.wrap_addr = addr; self.start_addr = addr;
} }
pub fn get_wrap_addr(& self) -> u16{ pub fn get_start_addr(&self) -> u16 {
self.wrap_addr self.start_addr
} }
pub fn set_next_addr(&mut self, addr: u16) { pub fn set_next_addr(&mut self, addr: u16) {
self.next_addr = addr; self.next_addr = addr;
} }
pub fn get_next_addr(& self) -> u16{ pub fn get_next_addr(&self) -> u16 {
self.next_addr self.next_addr
} }
pub fn set_tail_addr(&mut self, addr: u16) { pub fn set_tail_addr(&mut self, addr: u16) {
self.tail_addr = addr; self.tail_addr = addr;
} }
pub fn get_tail_addr(& self) -> u16{ pub fn get_tail_addr(&self) -> u16 {
self.tail_addr self.tail_addr
} }
} }
@ -48,14 +44,14 @@ impl TxBuffer {
/// TODO: Generalise MAC addresses /// TODO: Generalise MAC addresses
pub struct TxPacket { pub struct TxPacket {
frame: [u8; RAW_FRAME_LENGTH_MAX], frame: [u8; RAW_FRAME_LENGTH_MAX],
frame_length: usize frame_length: usize,
} }
impl TxPacket { impl TxPacket {
pub fn new() -> Self { pub fn new() -> Self {
TxPacket { TxPacket {
frame: [0; RAW_FRAME_LENGTH_MAX], frame: [0; RAW_FRAME_LENGTH_MAX],
frame_length: 0 frame_length: 0,
} }
} }