365 lines
13 KiB
Rust
365 lines
13 KiB
Rust
use core_io::{Write, Read, Error as IoError};
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use io::proto::{ProtoWrite, ProtoRead};
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#[derive(Debug)]
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pub enum Error {
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UnknownPacket(u8),
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Io(IoError)
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}
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impl From<IoError> for Error {
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fn from(value: IoError) -> Error {
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Error::Io(value)
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}
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}
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#[derive(PartialEq, Debug)]
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pub enum Packet {
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EchoRequest,
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EchoReply,
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ResetRequest,
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ResetAck,
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TSCAck,
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DestinationStatusRequest { destination: u8 },
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DestinationDownReply,
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DestinationOkReply,
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DestinationSequenceErrorReply { channel: u16 },
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DestinationCollisionReply { channel: u16 },
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DestinationBusyReply { channel: u16 },
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RoutingSetPath { destination: u8, hops: [u8; 32] },
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RoutingSetRank { rank: u8 },
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RoutingAck,
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MonitorRequest { destination: u8, channel: u16, probe: u8 },
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MonitorReply { value: u32 },
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InjectionRequest { destination: u8, channel: u16, overrd: u8, value: u8 },
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InjectionStatusRequest { destination: u8, channel: u16, overrd: u8 },
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InjectionStatusReply { value: u8 },
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I2cStartRequest { destination: u8, busno: u8 },
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I2cRestartRequest { destination: u8, busno: u8 },
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I2cStopRequest { destination: u8, busno: u8 },
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I2cWriteRequest { destination: u8, busno: u8, data: u8 },
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I2cWriteReply { succeeded: bool, ack: bool },
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I2cReadRequest { destination: u8, busno: u8, ack: bool },
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I2cReadReply { succeeded: bool, data: u8 },
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I2cBasicReply { succeeded: bool },
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SpiSetConfigRequest { destination: u8, busno: u8, flags: u8, length: u8, div: u8, cs: u8 },
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SpiWriteRequest { destination: u8, busno: u8, data: u32 },
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SpiReadRequest { destination: u8, busno: u8 },
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SpiReadReply { succeeded: bool, data: u32 },
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SpiBasicReply { succeeded: bool },
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JdacBasicRequest { destination: u8, dacno: u8, reqno: u8, param: u8 },
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JdacBasicReply { succeeded: bool, retval: u8 },
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}
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impl Packet {
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pub fn read_from<R>(reader: &mut R) -> Result<Self, Error>
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where R: Read + ?Sized
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{
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Ok(match reader.read_u8()? {
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0x00 => Packet::EchoRequest,
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0x01 => Packet::EchoReply,
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0x02 => Packet::ResetRequest,
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0x03 => Packet::ResetAck,
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0x04 => Packet::TSCAck,
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0x20 => Packet::DestinationStatusRequest {
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destination: reader.read_u8()?
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},
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0x21 => Packet::DestinationDownReply,
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0x22 => Packet::DestinationOkReply,
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0x23 => Packet::DestinationSequenceErrorReply {
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channel: reader.read_u16()?
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},
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0x24 => Packet::DestinationCollisionReply {
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channel: reader.read_u16()?
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},
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0x25 => Packet::DestinationBusyReply {
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channel: reader.read_u16()?
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},
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0x30 => {
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let destination = reader.read_u8()?;
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let mut hops = [0; 32];
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reader.read_exact(&mut hops)?;
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Packet::RoutingSetPath {
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destination: destination,
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hops: hops
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}
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},
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0x31 => Packet::RoutingSetRank {
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rank: reader.read_u8()?
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},
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0x32 => Packet::RoutingAck,
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0x40 => Packet::MonitorRequest {
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destination: reader.read_u8()?,
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channel: reader.read_u16()?,
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probe: reader.read_u8()?
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},
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0x41 => Packet::MonitorReply {
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value: reader.read_u32()?
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},
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0x50 => Packet::InjectionRequest {
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destination: reader.read_u8()?,
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channel: reader.read_u16()?,
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overrd: reader.read_u8()?,
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value: reader.read_u8()?
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},
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0x51 => Packet::InjectionStatusRequest {
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destination: reader.read_u8()?,
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channel: reader.read_u16()?,
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overrd: reader.read_u8()?
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},
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0x52 => Packet::InjectionStatusReply {
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value: reader.read_u8()?
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},
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0x80 => Packet::I2cStartRequest {
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destination: reader.read_u8()?,
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busno: reader.read_u8()?
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},
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0x81 => Packet::I2cRestartRequest {
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destination: reader.read_u8()?,
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busno: reader.read_u8()?
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},
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0x82 => Packet::I2cStopRequest {
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destination: reader.read_u8()?,
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busno: reader.read_u8()?
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},
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0x83 => Packet::I2cWriteRequest {
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destination: reader.read_u8()?,
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busno: reader.read_u8()?,
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data: reader.read_u8()?
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},
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0x84 => Packet::I2cWriteReply {
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succeeded: reader.read_bool()?,
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ack: reader.read_bool()?
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},
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0x85 => Packet::I2cReadRequest {
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destination: reader.read_u8()?,
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busno: reader.read_u8()?,
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ack: reader.read_bool()?
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},
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0x86 => Packet::I2cReadReply {
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succeeded: reader.read_bool()?,
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data: reader.read_u8()?
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},
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0x87 => Packet::I2cBasicReply {
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succeeded: reader.read_bool()?
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},
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0x90 => Packet::SpiSetConfigRequest {
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destination: reader.read_u8()?,
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busno: reader.read_u8()?,
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flags: reader.read_u8()?,
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length: reader.read_u8()?,
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div: reader.read_u8()?,
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cs: reader.read_u8()?
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},
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/* 0x91: was Packet::SpiSetXferRequest */
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0x92 => Packet::SpiWriteRequest {
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destination: reader.read_u8()?,
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busno: reader.read_u8()?,
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data: reader.read_u32()?
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},
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0x93 => Packet::SpiReadRequest {
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destination: reader.read_u8()?,
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busno: reader.read_u8()?
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},
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0x94 => Packet::SpiReadReply {
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succeeded: reader.read_bool()?,
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data: reader.read_u32()?
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},
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0x95 => Packet::SpiBasicReply {
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succeeded: reader.read_bool()?
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},
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0xa0 => Packet::JdacBasicRequest {
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destination: reader.read_u8()?,
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dacno: reader.read_u8()?,
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reqno: reader.read_u8()?,
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param: reader.read_u8()?,
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},
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0xa1 => Packet::JdacBasicReply {
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succeeded: reader.read_bool()?,
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retval: reader.read_u8()?
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},
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ty => return Err(Error::UnknownPacket(ty))
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})
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}
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pub fn write_to<W>(&self, writer: &mut W) -> Result<(), IoError>
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where W: Write + ?Sized
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{
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match *self {
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Packet::EchoRequest =>
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writer.write_u8(0x00)?,
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Packet::EchoReply =>
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writer.write_u8(0x01)?,
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Packet::ResetRequest =>
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writer.write_u8(0x02)?,
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Packet::ResetAck =>
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writer.write_u8(0x03)?,
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Packet::TSCAck =>
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writer.write_u8(0x04)?,
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Packet::DestinationStatusRequest { destination } => {
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writer.write_u8(0x20)?;
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writer.write_u8(destination)?;
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},
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Packet::DestinationDownReply =>
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writer.write_u8(0x21)?,
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Packet::DestinationOkReply =>
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writer.write_u8(0x22)?,
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Packet::DestinationSequenceErrorReply { channel } => {
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writer.write_u8(0x23)?;
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writer.write_u16(channel)?;
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},
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Packet::DestinationCollisionReply { channel } => {
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writer.write_u8(0x24)?;
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writer.write_u16(channel)?;
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},
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Packet::DestinationBusyReply { channel } => {
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writer.write_u8(0x25)?;
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writer.write_u16(channel)?;
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},
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Packet::RoutingSetPath { destination, hops } => {
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writer.write_u8(0x30)?;
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writer.write_u8(destination)?;
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writer.write_all(&hops)?;
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},
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Packet::RoutingSetRank { rank } => {
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writer.write_u8(0x31)?;
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writer.write_u8(rank)?;
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},
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Packet::RoutingAck =>
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writer.write_u8(0x32)?,
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Packet::MonitorRequest { destination, channel, probe } => {
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writer.write_u8(0x40)?;
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writer.write_u8(destination)?;
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writer.write_u16(channel)?;
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writer.write_u8(probe)?;
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},
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Packet::MonitorReply { value } => {
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writer.write_u8(0x41)?;
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writer.write_u32(value)?;
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},
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Packet::InjectionRequest { destination, channel, overrd, value } => {
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writer.write_u8(0x50)?;
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writer.write_u8(destination)?;
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writer.write_u16(channel)?;
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writer.write_u8(overrd)?;
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writer.write_u8(value)?;
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},
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Packet::InjectionStatusRequest { destination, channel, overrd } => {
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writer.write_u8(0x51)?;
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writer.write_u8(destination)?;
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writer.write_u16(channel)?;
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writer.write_u8(overrd)?;
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},
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Packet::InjectionStatusReply { value } => {
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writer.write_u8(0x52)?;
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writer.write_u8(value)?;
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},
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Packet::I2cStartRequest { destination, busno } => {
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writer.write_u8(0x80)?;
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writer.write_u8(destination)?;
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writer.write_u8(busno)?;
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},
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Packet::I2cRestartRequest { destination, busno } => {
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writer.write_u8(0x81)?;
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writer.write_u8(destination)?;
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writer.write_u8(busno)?;
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},
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Packet::I2cStopRequest { destination, busno } => {
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writer.write_u8(0x82)?;
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writer.write_u8(destination)?;
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writer.write_u8(busno)?;
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},
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Packet::I2cWriteRequest { destination, busno, data } => {
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writer.write_u8(0x83)?;
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writer.write_u8(destination)?;
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writer.write_u8(busno)?;
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writer.write_u8(data)?;
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},
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Packet::I2cWriteReply { succeeded, ack } => {
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writer.write_u8(0x84)?;
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writer.write_bool(succeeded)?;
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writer.write_bool(ack)?;
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},
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Packet::I2cReadRequest { destination, busno, ack } => {
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writer.write_u8(0x85)?;
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writer.write_u8(destination)?;
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writer.write_u8(busno)?;
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writer.write_bool(ack)?;
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},
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Packet::I2cReadReply { succeeded, data } => {
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writer.write_u8(0x86)?;
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writer.write_bool(succeeded)?;
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writer.write_u8(data)?;
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},
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Packet::I2cBasicReply { succeeded } => {
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writer.write_u8(0x87)?;
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writer.write_bool(succeeded)?;
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},
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Packet::SpiSetConfigRequest { destination, busno, flags, length, div, cs } => {
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writer.write_u8(0x90)?;
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writer.write_u8(destination)?;
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writer.write_u8(busno)?;
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writer.write_u8(flags)?;
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writer.write_u8(length)?;
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writer.write_u8(div)?;
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writer.write_u8(cs)?;
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},
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Packet::SpiWriteRequest { destination, busno, data } => {
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writer.write_u8(0x92)?;
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writer.write_u8(destination)?;
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writer.write_u8(busno)?;
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writer.write_u32(data)?;
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},
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Packet::SpiReadRequest { destination, busno } => {
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writer.write_u8(0x93)?;
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writer.write_u8(destination)?;
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writer.write_u8(busno)?;
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},
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Packet::SpiReadReply { succeeded, data } => {
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writer.write_u8(0x94)?;
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writer.write_bool(succeeded)?;
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writer.write_u32(data)?;
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},
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Packet::SpiBasicReply { succeeded } => {
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writer.write_u8(0x95)?;
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writer.write_bool(succeeded)?;
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},
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Packet::JdacBasicRequest { destination, dacno, reqno, param } => {
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writer.write_u8(0xa0)?;
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writer.write_u8(destination)?;
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writer.write_u8(dacno)?;
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writer.write_u8(reqno)?;
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writer.write_u8(param)?;
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}
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Packet::JdacBasicReply { succeeded, retval } => {
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writer.write_u8(0xa1)?;
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writer.write_bool(succeeded)?;
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writer.write_u8(retval)?;
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},
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}
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Ok(())
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}
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}
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