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Another standalone building block for Cosmo. The RAA229620A is identical to the RAA229618 (for our purposes), other than its device ID code.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,169 @@ | ||
| // This Source Code Form is subject to the terms of the Mozilla Public | ||
| // License, v. 2.0. If a copy of the MPL was not distributed with this | ||
| // file, You can obtain one at https://mozilla.org/MPL/2.0/. | ||
|
|
||
| use core::cell::Cell; | ||
|
|
||
| use crate::{ | ||
| pmbus_validate, BadValidation, CurrentSensor, TempSensor, Validate, | ||
| VoltageSensor, | ||
| }; | ||
| use drv_i2c_api::*; | ||
| use pmbus::commands::raa229620a::*; | ||
| use pmbus::commands::CommandCode; | ||
| use pmbus::*; | ||
| use userlib::units::*; | ||
|
|
||
| // | ||
| // This is a special rail value that is issued as a PAGE command to enable | ||
| // reading phase current via PHASE + PHASE_CURRENT | ||
| // | ||
| const PHASE_RAIL: u8 = 0x80; | ||
|
|
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| pub struct Raa229620A { | ||
| device: I2cDevice, | ||
| rail: u8, | ||
| mode: Cell<Option<pmbus::VOutModeCommandData>>, | ||
| } | ||
|
|
||
| #[derive(Copy, Clone, Debug, PartialEq)] | ||
| pub enum Error { | ||
| BadRead { cmd: u8, code: ResponseCode }, | ||
| BadWrite { cmd: u8, code: ResponseCode }, | ||
| BadData { cmd: u8 }, | ||
| BadValidation { cmd: u8, code: ResponseCode }, | ||
| InvalidData { err: pmbus::Error }, | ||
| } | ||
|
|
||
| impl From<BadValidation> for Error { | ||
| fn from(value: BadValidation) -> Self { | ||
| Self::BadValidation { | ||
| cmd: value.cmd, | ||
| code: value.code, | ||
| } | ||
| } | ||
| } | ||
|
|
||
| impl From<Error> for ResponseCode { | ||
| fn from(err: Error) -> Self { | ||
| match err { | ||
| Error::BadRead { code, .. } => code, | ||
| Error::BadWrite { code, .. } => code, | ||
| Error::BadValidation { code, .. } => code, | ||
| _ => panic!(), | ||
| } | ||
| } | ||
| } | ||
|
|
||
| impl From<pmbus::Error> for Error { | ||
| fn from(err: pmbus::Error) -> Self { | ||
| Error::InvalidData { err } | ||
| } | ||
| } | ||
|
|
||
| impl Raa229620A { | ||
| pub fn new(device: &I2cDevice, rail: u8) -> Self { | ||
| Raa229620A { | ||
| device: *device, | ||
| rail, | ||
| mode: Cell::new(None), | ||
| } | ||
| } | ||
|
|
||
| pub fn read_mode(&self) -> Result<pmbus::VOutModeCommandData, Error> { | ||
| Ok(match self.mode.get() { | ||
| None => { | ||
| let mode = pmbus_rail_read!( | ||
| self.device, | ||
| self.rail, | ||
| commands::VOUT_MODE | ||
| )?; | ||
| self.mode.set(Some(mode)); | ||
| mode | ||
| } | ||
| Some(mode) => mode, | ||
| }) | ||
| } | ||
|
|
||
| pub fn turn_off(&mut self) -> Result<(), Error> { | ||
| let mut op = pmbus_rail_read!(self.device, self.rail, OPERATION)?; | ||
| op.set_on_off_state(OPERATION::OnOffState::Off); | ||
| pmbus_rail_write!(self.device, self.rail, OPERATION, op) | ||
| } | ||
|
|
||
| pub fn turn_on(&mut self) -> Result<(), Error> { | ||
| let mut op = pmbus_rail_read!(self.device, self.rail, OPERATION)?; | ||
| op.set_on_off_state(OPERATION::OnOffState::On); | ||
| pmbus_rail_write!(self.device, self.rail, OPERATION, op) | ||
| } | ||
|
|
||
| pub fn set_vout(&mut self, value: Volts) -> Result<(), Error> { | ||
| if value > Volts(3.050) { | ||
| Err(Error::InvalidData { | ||
| err: pmbus::Error::ValueOutOfRange, | ||
| }) | ||
| } else { | ||
| let mut vout = VOUT_COMMAND::CommandData(0); | ||
| vout.set(self.read_mode()?, pmbus::units::Volts(value.0))?; | ||
| pmbus_rail_write!(self.device, self.rail, VOUT_COMMAND, vout) | ||
| } | ||
| } | ||
|
|
||
| pub fn clear_faults(&self) -> Result<(), Error> { | ||
| pmbus_write!(self.device, CLEAR_FAULTS) | ||
| } | ||
|
|
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| pub fn set_vin_uv_warn_limit(&self, value: Volts) -> Result<(), Error> { | ||
| let mut vin = VIN_UV_WARN_LIMIT::CommandData(0); | ||
| vin.set(pmbus::units::Volts(value.0))?; | ||
| pmbus_rail_write!(self.device, self.rail, VIN_UV_WARN_LIMIT, vin) | ||
| } | ||
|
|
||
| pub fn read_vin(&self) -> Result<Volts, Error> { | ||
| let vin = pmbus_rail_read!(self.device, self.rail, READ_VIN)?; | ||
| Ok(Volts(vin.get()?.0)) | ||
| } | ||
|
|
||
| pub fn read_phase_current(&self, phase: Phase) -> Result<Amperes, Error> { | ||
| let iout = pmbus_rail_phase_read!( | ||
| self.device, | ||
| PHASE_RAIL, | ||
| phase.0, | ||
| PHASE_CURRENT | ||
| )?; | ||
| Ok(Amperes(iout.get()?.0)) | ||
| } | ||
|
|
||
| pub fn i2c_device(&self) -> &I2cDevice { | ||
| &self.device | ||
| } | ||
| } | ||
|
|
||
| impl Validate<Error> for Raa229620A { | ||
| fn validate(device: &I2cDevice) -> Result<bool, Error> { | ||
| let expected = &[0x00, 0x9B, 0xd2, 0x49]; | ||
| pmbus_validate(device, CommandCode::IC_DEVICE_ID, expected) | ||
| .map_err(Into::into) | ||
| } | ||
| } | ||
|
|
||
| impl VoltageSensor<Error> for Raa229620A { | ||
| fn read_vout(&self) -> Result<Volts, Error> { | ||
| let vout = pmbus_rail_read!(self.device, self.rail, READ_VOUT)?; | ||
| Ok(Volts(vout.get(self.read_mode()?)?.0)) | ||
| } | ||
| } | ||
|
|
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| impl TempSensor<Error> for Raa229620A { | ||
| fn read_temperature(&self) -> Result<Celsius, Error> { | ||
| let t = pmbus_rail_read!(self.device, self.rail, READ_TEMPERATURE_1)?; | ||
| Ok(Celsius(t.get()?.0)) | ||
| } | ||
| } | ||
|
|
||
| impl CurrentSensor<Error> for Raa229620A { | ||
| fn read_iout(&self) -> Result<Amperes, Error> { | ||
| let iout = pmbus_rail_read!(self.device, self.rail, READ_IOUT)?; | ||
| Ok(Amperes(iout.get()?.0)) | ||
| } | ||
| } |
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