use bit_field::BitArray;
use embedded_hal::digital::v2::OutputPin;
use crate::bus::{Bus, BusRef, FourWire, SpiRef, ThreeWire};
use crate::host::Host;
use crate::net::Ipv4Addr;
use crate::socket::Socket;
use crate::uninitialized_device::UninitializedDevice;
use crate::{register, MacAddress};
pub enum ResetError<E> {
SocketsNotReleased,
Other(E),
}
impl<E> From<E> for ResetError<E> {
fn from(error: E) -> ResetError<E> {
ResetError::Other(error)
}
}
pub(crate) struct DeviceState<HostImpl: Host> {
host: HostImpl,
sockets: [u8; 1],
}
pub struct Device<SpiBus: Bus, HostImpl: Host> {
bus: SpiBus,
state: DeviceState<HostImpl>,
}
impl<SpiBus: Bus, HostImpl: Host> Device<SpiBus, HostImpl> {
pub(crate) fn new(bus: SpiBus, host: HostImpl) -> Self {
Device {
bus,
state: DeviceState {
host,
sockets: [0b11111111],
},
}
}
pub fn reset(mut self) -> Result<UninitializedDevice<SpiBus>, ResetError<SpiBus::Error>> {
if self.state.sockets != [0b11111111] {
Err(ResetError::SocketsNotReleased)
} else {
self.clear_mode()?;
Ok(UninitializedDevice::new(self.bus))
}
}
fn clear_mode(&mut self) -> Result<(), SpiBus::Error> {
let mode = [0b10000000];
self.bus
.write_frame(register::COMMON, register::common::MODE, &mode)?;
Ok(())
}
#[inline]
pub fn gateway(&mut self) -> Result<Ipv4Addr, SpiBus::Error> {
self.as_mut().gateway()
}
#[inline]
pub fn subnet_mask(&mut self) -> Result<Ipv4Addr, SpiBus::Error> {
self.as_mut().subnet_mask()
}
#[inline]
pub fn mac(&mut self) -> Result<MacAddress, SpiBus::Error> {
self.as_mut().mac()
}
#[inline]
pub fn ip(&mut self) -> Result<Ipv4Addr, SpiBus::Error> {
self.as_mut().ip()
}
#[inline]
pub fn phy_config(&mut self) -> Result<register::common::PhyConfig, SpiBus::Error> {
self.as_mut().phy_config()
}
#[inline]
pub fn version(&mut self) -> Result<u8, SpiBus::Error> {
self.as_mut().version()
}
#[inline]
pub(crate) fn as_mut(&mut self) -> DeviceRefMut<'_, BusRef<'_, SpiBus>, HostImpl> {
DeviceRefMut {
bus: BusRef(&mut self.bus),
state: &mut self.state,
}
}
pub fn release(self) -> (SpiBus, HostImpl) {
(self.bus, self.state.host)
}
pub fn deactivate(self) -> (SpiBus, InactiveDevice<HostImpl>) {
(self.bus, InactiveDevice(self.state))
}
}
pub struct InactiveDevice<HostImpl: Host>(DeviceState<HostImpl>);
impl<HostImpl: Host> InactiveDevice<HostImpl> {
pub fn activate<SpiBus: Bus>(self, bus: SpiBus) -> Device<SpiBus, HostImpl> {
Device { bus, state: self.0 }
}
pub fn activate_ref<SpiBus: Bus>(&mut self, bus: SpiBus) -> DeviceRefMut<SpiBus, HostImpl> {
DeviceRefMut {
bus,
state: &mut self.0,
}
}
}
pub struct DeviceRefMut<'a, SpiBus: Bus, HostImpl: Host> {
pub(crate) bus: SpiBus,
state: &'a mut DeviceState<HostImpl>,
}
impl<SpiBus: Bus, HostImpl: Host> DeviceRefMut<'_, SpiBus, HostImpl> {
pub fn take_socket(&mut self) -> Option<Socket> {
for index in 0..8 {
if self.state.sockets.get_bit(index) {
self.state.sockets.set_bit(index, false);
return Some(Socket::new(index as u8));
}
}
None
}
pub fn release_socket(&mut self, socket: Socket) {
self.state.sockets.set_bit(socket.index.into(), true);
}
pub fn gateway(&mut self) -> Result<Ipv4Addr, SpiBus::Error> {
let mut octets = [0u8; 4];
self.bus
.read_frame(register::COMMON, register::common::GATEWAY, &mut octets)?;
Ok(Ipv4Addr::from(octets))
}
pub fn subnet_mask(&mut self) -> Result<Ipv4Addr, SpiBus::Error> {
let mut octets = [0u8; 4];
self.bus
.read_frame(register::COMMON, register::common::SUBNET_MASK, &mut octets)?;
Ok(Ipv4Addr::from(octets))
}
pub fn mac(&mut self) -> Result<MacAddress, SpiBus::Error> {
let mut mac = MacAddress::default();
self.bus
.read_frame(register::COMMON, register::common::MAC, &mut mac.octets)?;
Ok(mac)
}
pub fn ip(&mut self) -> Result<Ipv4Addr, SpiBus::Error> {
let mut octets = [0u8; 4];
self.bus
.read_frame(register::COMMON, register::common::IP, &mut octets)?;
Ok(Ipv4Addr::from(octets))
}
pub fn phy_config(&mut self) -> Result<register::common::PhyConfig, SpiBus::Error> {
let mut phy = [0u8];
self.bus
.read_frame(register::COMMON, register::common::PHY_CONFIG, &mut phy)?;
Ok(phy[0].into())
}
pub fn version(&mut self) -> Result<u8, SpiBus::Error> {
let mut version = [0u8];
self.bus
.read_frame(register::COMMON, register::common::VERSION, &mut version)?;
Ok(version[0])
}
}