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/* * Copyright (C) 2018 Kubos Corporation * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ use crate::commands::*; use crate::telemetry; use eps_api::EpsResult; use rust_i2c::{Command, Connection}; use std::thread; use std::time::Duration; // Observed (but undocumented) inter-command delay required is 59ms // Rounding up to an even 60 const INTER_COMMAND_DELAY: Duration = Duration::from_millis(60); /// Trait defining expected functionality for Clyde 3g EPS pub trait Clyde3gEps { /// Get Board Status /// /// The status bytes are designed to supply operational data about the I2C Node. fn get_board_status(&self) -> EpsResult<board_status::BoardStatus>; /// Get Checksum /// /// This command instructs the node to self-inspect its ROM contents in order /// to generate a checksum. The value retrieved can be used to determine whether /// the contents of the ROM have changed during the operation of the device. fn get_checksum(&self) -> EpsResult<checksum::Checksum>; /// Get Version /// /// The version number of the firmware will be returned on this command. /// The revision number returns the current revision of the firmware that is /// present on the board. The firmware number returns the current firmware on the board. fn get_version_info(&self) -> EpsResult<version::VersionInfo>; /// Get Last Error /// /// If an error has been generated after attempting to execute a user's command, /// this command can be used to retrieve details about the error. fn get_last_error(&self) -> EpsResult<last_error::LastError>; /// Manual Reset /// /// If required the user can reset the TTC node using this command. When issued, /// the board will reset within 1 second. This command will result in the board /// being brought up in its defined initial condition. Resetting the board in /// this fashion will increment the Manual Reset Counter. fn manual_reset(&self) -> EpsResult<()>; /// Reset Communications Watchdog /// /// Any valid command will reset the communications watchdog timer. If the user /// does not require any telemetry from the board, this command can be sent /// to reset the communications watchdog. fn reset_comms_watchdog(&self) -> EpsResult<()>; /// Get Motherboard Telemetry /// /// This command is used to request telemetry items from the motherboard's /// telemetry node. /// /// # Arguments /// `telem_type` - Variant of [`MotherboardTelemetry::Type`] to request /// /// [`MotherboardTelemetry::Type`]: ./MotherboardTelemetry/enum.Type.html fn get_motherboard_telemetry(&self, telem_type: telemetry::motherboard::Type) -> EpsResult<f64>; /// Get Daughterboard Telemetry /// /// This command is used to request telemetry items from the daughterboard's /// telemetry node. /// /// # Arguments /// `telem_type` - Variant of [`DaughterboardTelemetry::Type`] to request /// /// [`DaughterboardTelemetry::Type`]: ./DaughterboardTelemetry/enum.Type.html fn get_daughterboard_telemetry( &self, telem_type: telemetry::daughterboard::Type, ) -> EpsResult<f64>; /// Get Reset Telemetry /// /// This command is used to request telemetry items regarding various /// reset conditions on both the motherboard and daughterboard. /// /// # Arguments /// `telem_type` - Variant of [`ResetTelemetry::Type`] to request /// /// [`ResetTelemetry::Type`]: ./ResetTelemetry/enum.Type.html fn get_reset_telemetry( &self, telem_type: telemetry::reset::Type, ) -> EpsResult<telemetry::reset::Data>; /// Set Communications Watchdog Period /// /// The Communications Watchdog by default has a value of 4 minutes set as /// its timeout period. If 4 minutes pass without a command being received /// then the device will reboot into its pre-defined initial state. This /// value of 4 minutes can be changed using the Set Communications Watchdog /// Period command, 0x21. The data byte specifies the number of minutes the /// communications watchdog will wait before timing out. /// /// # Arguments /// `period` - Watchdog period to set in minutes fn set_comms_watchdog_period(&self, period: u8) -> EpsResult<()>; /// Get Communications Watchdog Period /// /// This command provides the user with the current communications watchdog /// timeout that has been set. The returned value is indicated in minutes. fn get_comms_watchdog_period(&self) -> EpsResult<u8>; /// Issue Raw Command /// /// This command sends a raw command to the EPS fn raw_command(&self, cmd: u8, data: Vec<u8>) -> EpsResult<()>; } /// EPS structure containing low level connection and functionality /// required for commanding and requesting telemetry from EPS device. pub struct Eps { connection: Connection, } impl Eps { /// Constructor /// /// Creates new instance of Eps structure. /// /// # Arguments /// `connection` - A [`Connection`] used as low-level connection to EPS hardware /// /// [`Connection`]: ../rust_i2c/struct.Connection.html pub fn new(connection: Connection) -> Self { Eps { connection } } } impl Clyde3gEps for Eps { /// Get Board Status /// /// The status bytes are designed to supply operational data about the I2C Node. fn get_board_status(&self) -> EpsResult<board_status::BoardStatus> { thread::sleep(INTER_COMMAND_DELAY); let (command, rx_len) = board_status::command(); board_status::parse( &self .connection .transfer(command, rx_len, Duration::from_millis(3))?, ) } /// Get Checksum /// /// This command instructs the node to self-inspect its ROM contents in order /// to generate a checksum. The value retrieved can be used to determine whether /// the contents of the ROM have changed during the operation of the device. fn get_checksum(&self) -> EpsResult<checksum::Checksum> { thread::sleep(INTER_COMMAND_DELAY); let (command, rx_len) = checksum::command(); checksum::parse( &self .connection .transfer(command, rx_len, Duration::from_millis(80))?, ) } /// Get Version /// /// The version number of the firmware will be returned on this command. /// The revision number returns the current revision of the firmware that is /// present on the board. The firmware number returns the current firmware on the board. fn get_version_info(&self) -> EpsResult<version::VersionInfo> { thread::sleep(INTER_COMMAND_DELAY); let (command, rx_len) = version::command(); version::parse( &self .connection .transfer(command, rx_len, Duration::from_millis(3))?, ) } /// Get Last Error /// /// If an error has been generated after attempting to execute a user's command, /// this command can be used to retrieve details about the error. fn get_last_error(&self) -> EpsResult<last_error::LastError> { thread::sleep(INTER_COMMAND_DELAY); let (command, rx_len) = last_error::command(); last_error::parse( &self .connection .transfer(command, rx_len, Duration::from_millis(3))?, ) } /// Manual Reset /// /// If required the user can reset the TTC node using this command. When issued, /// the board will reset within 1 second. This command will result in the board /// being brought up in its defined initial condition. Resetting the board in /// this fashion will increment the Manual Reset Counter. fn manual_reset(&self) -> EpsResult<()> { thread::sleep(INTER_COMMAND_DELAY); self.connection.write(manual_reset::command())?; Ok(()) } /// Reset Communications Watchdog /// /// Any valid command will reset the communications watchdog timer. If the user /// does not require any telemetry from the board, this command can be sent /// to reset the communications watchdog. fn reset_comms_watchdog(&self) -> EpsResult<()> { thread::sleep(INTER_COMMAND_DELAY); self.connection.write(reset_comms_watchdog::command())?; Ok(()) } /// Get Motherboard Telemetry /// /// This command is used to request telemetry items from the motherboard's /// telemetry node. /// /// # Arguments /// `telem_type` - Variant of [`MotherboardTelemetry::Type`] to request /// /// [`MotherboardTelemetry::Type`]: ./MotherboardTelemetry/enum.Type.html fn get_motherboard_telemetry( &self, telem_type: telemetry::motherboard::Type, ) -> EpsResult<f64> { thread::sleep(INTER_COMMAND_DELAY); let (command, rx_len) = telemetry::motherboard::command(telem_type); telemetry::motherboard::parse( &self .connection .transfer(command, rx_len, Duration::from_millis(20))?, telem_type, ) } /// Get Daughterboard Telemetry /// /// This command is used to request telemetry items from the daughterboard's /// telemetry node. /// /// # Arguments /// `telem_type` - Variant of [`DaughterboardTelemetry::Type`] to request /// /// [`DaughterboardTelemetry::Type`]: ./DaughterboardTelemetry/enum.Type.html fn get_daughterboard_telemetry( &self, telem_type: telemetry::daughterboard::Type, ) -> EpsResult<f64> { thread::sleep(INTER_COMMAND_DELAY); let (command, rx_len) = telemetry::daughterboard::command(telem_type); telemetry::daughterboard::parse( &self .connection .transfer(command, rx_len, Duration::from_millis(20))?, telem_type, ) } /// Get Reset Telemetry /// /// This command is used to request telemetry items regarding various /// reset conditions on both the motherboard and daughterboard. /// /// # Arguments /// `telem_type` - Variant of [`ResetTelemetry::Type`] to request /// /// [`ResetTelemetry::Type`]: ./ResetTelemetry/enum.Type.html fn get_reset_telemetry( &self, telem_type: telemetry::reset::Type, ) -> EpsResult<telemetry::reset::Data> { thread::sleep(INTER_COMMAND_DELAY); let (command, rx_len) = telemetry::reset::command(telem_type); telemetry::reset::parse(&self.connection.transfer( command, rx_len, Duration::from_millis(3), )?) } /// Set Communications Watchdog Period /// /// The Communications Watchdog by default has a value of 4 minutes set as /// its timeout period. If 4 minutes pass without a command being received /// then the device will reboot into its pre-defined initial state. This /// value of 4 minutes can be changed using the Set Communications Watchdog /// Period command, 0x21. The data byte specifies the number of minutes the /// communications watchdog will wait before timing out. /// /// # Arguments /// `period` - Watchdog period to set in minutes fn set_comms_watchdog_period(&self, period: u8) -> EpsResult<()> { thread::sleep(INTER_COMMAND_DELAY); self.connection .write(set_comms_watchdog_period::command(period))?; Ok(()) } /// Get Communications Watchdog Period /// /// This command provides the user with the current communications watchdog /// timeout that has been set. The returned value is indicated in minutes. fn get_comms_watchdog_period(&self) -> EpsResult<u8> { thread::sleep(INTER_COMMAND_DELAY); let (command, rx_len) = get_comms_watchdog_period::command(); get_comms_watchdog_period::parse(&self.connection.transfer( command, rx_len, Duration::from_millis(2), )?) } /// Issue Raw Command /// /// This command sends a raw command to the EPS fn raw_command(&self, cmd: u8, data: Vec<u8>) -> EpsResult<()> { thread::sleep(INTER_COMMAND_DELAY); self.connection.write(Command { cmd, data })?; Ok(()) } }