M-Labs/thermostat
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implement support for fan PWM

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Co-authored-by: Egor Savkin <es@m-labs.hk>
Co-committed-by: Egor Savkin <es@m-labs.hk>
This commit is contained in:
Egor Savkin 2023-03-22 17:15:49 +08:00 committed by sb10q
parent 5688b2f1bb
commit 570c0324b3
8 changed files with 516 additions and 50 deletions
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78
README.md
View File

@ -94,36 +94,42 @@ The scope of this setting is per TCP session.
Send commands as simple text string terminated by `\n`. Responses are Send commands as simple text string terminated by `\n`. Responses are
formatted as line-delimited JSON. formatted as line-delimited JSON.
| Syntax | Function | | Syntax | Function |
| --- | --- | |----------------------------------|-------------------------------------------------------------------------------|
| `report` | Show current input | | `report` | Show current input |
| `report mode` | Show current report mode | | `report mode` | Show current report mode |
| `report mode <off/on>` | Set report mode | | `report mode <off/on>` | Set report mode |
| `pwm` | Show current PWM settings | | `pwm` | Show current PWM settings |
| `pwm <0/1> max_i_pos <amp>` | Set maximum positive output current | | `pwm <0/1> max_i_pos <amp>` | Set maximum positive output current |
| `pwm <0/1> max_i_neg <amp>` | Set maximum negative output current | | `pwm <0/1> max_i_neg <amp>` | Set maximum negative output current |
| `pwm <0/1> max_v <volt>` | Set maximum output voltage | | `pwm <0/1> max_v <volt>` | Set maximum output voltage |
| `pwm <0/1> i_set <amp>` | Disengage PID, set fixed output current | | `pwm <0/1> i_set <amp>` | Disengage PID, set fixed output current |
| `pwm <0/1> pid` | Let output current to be controlled by the PID | | `pwm <0/1> pid` | Let output current to be controlled by the PID |
| `center <0/1> <volt>` | Set the MAX1968 0A-centerpoint to the specified fixed voltage | | `center <0/1> <volt>` | Set the MAX1968 0A-centerpoint to the specified fixed voltage |
| `center <0/1> vref` | Set the MAX1968 0A-centerpoint to measure from VREF | | `center <0/1> vref` | Set the MAX1968 0A-centerpoint to measure from VREF |
| `pid` | Show PID configuration | | `pid` | Show PID configuration |
| `pid <0/1> target <deg_celsius>` | Set the PID controller target temperature | | `pid <0/1> target <deg_celsius>` | Set the PID controller target temperature |
| `pid <0/1> kp <value>` | Set proportional gain | | `pid <0/1> kp <value>` | Set proportional gain |
| `pid <0/1> ki <value>` | Set integral gain | | `pid <0/1> ki <value>` | Set integral gain |
| `pid <0/1> kd <value>` | Set differential gain | | `pid <0/1> kd <value>` | Set differential gain |
| `pid <0/1> output_min <amp>` | Set mininum output | | `pid <0/1> output_min <amp>` | Set mininum output |
| `pid <0/1> output_max <amp>` | Set maximum output | | `pid <0/1> output_max <amp>` | Set maximum output |
| `s-h` | Show Steinhart-Hart equation parameters | | `s-h` | Show Steinhart-Hart equation parameters |
| `s-h <0/1> <t0/b/r0> <value>` | Set Steinhart-Hart parameter for a channel | | `s-h <0/1> <t0/b/r0> <value>` | Set Steinhart-Hart parameter for a channel |
| `postfilter` | Show postfilter settings | | `postfilter` | Show postfilter settings |
| `postfilter <0/1> off` | Disable postfilter | | `postfilter <0/1> off` | Disable postfilter |
| `postfilter <0/1> rate <rate>` | Set postfilter output data rate | | `postfilter <0/1> rate <rate>` | Set postfilter output data rate |
| `load [0/1]` | Restore configuration for channel all/0/1 from flash | | `load [0/1]` | Restore configuration for channel all/0/1 from flash |
| `save [0/1]` | Save configuration for channel all/0/1 to flash | | `save [0/1]` | Save configuration for channel all/0/1 to flash |
| `reset` | Reset the device | | `reset` | Reset the device |
| `dfu` | Reset device and enters USB device firmware update (DFU) mode | | `dfu` | Reset device and enters USB device firmware update (DFU) mode |
| `ipv4 <X.X.X.X/L> [Y.Y.Y.Y]` | Configure IPv4 address, netmask length, and optional default gateway | | `ipv4 <X.X.X.X/L> [Y.Y.Y.Y]` | Configure IPv4 address, netmask length, and optional default gateway |
| `fan` | Show current fan settings and sensors' measurements |
| `fan <value>` | Set fan power with values from 1 to 100 |
| `fan auto` | Enable automatic fan speed control |
| `fcurve <a> <b> <c>` | Set fan controller curve coefficients (see *Fan control* section) |
| `fcurve default` | Set fan controller curve coefficients to defaults (see *Fan control* section) |
| `hwrev` | Show hardware revision, and settings related to it |
## USB ## USB
@ -269,3 +275,15 @@ with the following keys.
## PID Tuning ## PID Tuning
The thermostat implements a PID control loop for each of the TEC channels, more details on setting up the PID control loop can be found [here](./doc/PID%20tuning.md). The thermostat implements a PID control loop for each of the TEC channels, more details on setting up the PID control loop can be found [here](./doc/PID%20tuning.md).
## Fan control
Fan control is available for the thermostat revisions with integrated fan system. For this purpose four commands are available:
1. `fan` - show fan stats: `fan_pwm`, `abs_max_tec_i`, `auto_mode`, `k_a`, `k_b`, `k_c`.
2. `fan auto` - enable auto speed controller mode, which correlates with fan curve `fcurve`.
3. `fan <value>` - set the fan power with the value from `1` to `100` and disable auto mode. There is no way to disable the fan.
Please note that power doesn't correlate with the actual speed linearly.
4. `fcurve <a> <b> <c>` - set coefficients of the controlling curve `a*x^2 + b*x + c`, where `x` is `abs_max_tec_i/MAX_TEC_I`,
i.e. receives values from 0 to 1 linearly tied to the maximum current. The controlling curve should produce values from 0 to 1,
as below and beyond values would be substituted by 0 and 1 respectively.
5. `fcurve default` - restore fan curve settings to defaults: `a = 1.0, b = 0.0, c = 0.0`.

12
src/channels.rs
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@ -1,4 +1,5 @@
use heapless::{consts::{U2, U1024}, Vec}; use core::cmp::max_by;
use heapless::{consts::U2, Vec};
use serde::{Serialize, Serializer}; use serde::{Serialize, Serializer};
use smoltcp::time::Instant; use smoltcp::time::Instant;
use stm32f4xx_hal::hal; use stm32f4xx_hal::hal;
@ -16,6 +17,7 @@ use crate::{
channel::{Channel, Channel0, Channel1}, channel::{Channel, Channel0, Channel1},
channel_state::ChannelState, channel_state::ChannelState,
command_parser::{CenterPoint, PwmPin}, command_parser::{CenterPoint, PwmPin},
command_handler::JsonBuffer,
pins, pins,
steinhart_hart, steinhart_hart,
}; };
@ -518,9 +520,13 @@ impl Channels {
} }
serde_json_core::to_vec(&summaries) serde_json_core::to_vec(&summaries)
} }
}
type JsonBuffer = Vec<u8, U1024>; pub fn current_abs_max_tec_i(&mut self) -> f64 {
max_by(self.get_tec_i(0).abs().get::<ampere>(),
self.get_tec_i(1).abs().get::<ampere>(),
|a, b| a.partial_cmp(b).unwrap_or(core::cmp::Ordering::Equal))
}
}
#[derive(Serialize)] #[derive(Serialize)]
pub struct Report { pub struct Report {

86
src/command_handler.rs
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@ -1,6 +1,7 @@
use smoltcp::socket::TcpSocket; use smoltcp::socket::TcpSocket;
use log::{error, warn}; use log::{error, warn};
use core::fmt::Write; use core::fmt::Write;
use heapless::{consts::U1024, Vec};
use super::{ use super::{
net, net,
command_parser::{ command_parser::{
@ -22,7 +23,9 @@ use super::{
config::ChannelConfig, config::ChannelConfig,
dfu, dfu,
flash_store::FlashStore, flash_store::FlashStore,
session::Session session::Session,
FanCtrl,
hw_rev::HWRev,
}; };
use uom::{ use uom::{
@ -55,6 +58,8 @@ pub enum Error {
FlashError FlashError
} }
pub type JsonBuffer = Vec<u8, U1024>;
fn send_line(socket: &mut TcpSocket, data: &[u8]) -> bool { fn send_line(socket: &mut TcpSocket, data: &[u8]) -> bool {
let send_free = socket.send_capacity() - socket.send_queue(); let send_free = socket.send_capacity() - socket.send_queue();
if data.len() > send_free + 1 { if data.len() > send_free + 1 {
@ -341,7 +346,76 @@ impl Handler {
Ok(Handler::Reset) Ok(Handler::Reset)
} }
pub fn handle_command (command: Command, socket: &mut TcpSocket, channels: &mut Channels, session: &Session, leds: &mut Leds, store: &mut FlashStore, ipv4_config: &mut Ipv4Config) -> Result<Self, Error> { fn set_fan(socket: &mut TcpSocket, fan_pwm: u32, fan_ctrl: &mut FanCtrl) -> Result<Handler, Error> {
if !fan_ctrl.fan_available() {
send_line(socket, b"{ \"warning\": \"this thermostat doesn't have fan!\" }");
return Ok(Handler::Handled);
}
fan_ctrl.set_auto_mode(false);
fan_ctrl.set_pwm(fan_pwm);
if fan_ctrl.fan_pwm_recommended() {
send_line(socket, b"{}");
} else {
send_line(socket, b"{ \"warning\": \"this fan doesn't have full PWM support. Use it at your own risk!\" }");
}
Ok(Handler::Handled)
}
fn show_fan(socket: &mut TcpSocket, fan_ctrl: &mut FanCtrl) -> Result<Handler, Error> {
match fan_ctrl.summary() {
Ok(buf) => {
send_line(socket, &buf);
Ok(Handler::Handled)
}
Err(e) => {
error!("unable to serialize fan summary: {:?}", e);
let _ = writeln!(socket, "{{\"error\":\"{:?}\"}}", e);
Err(Error::ReportError)
}
}
}
fn fan_auto(socket: &mut TcpSocket, fan_ctrl: &mut FanCtrl) -> Result<Handler, Error> {
if !fan_ctrl.fan_available() {
send_line(socket, b"{ \"warning\": \"this thermostat doesn't have fan!\" }");
return Ok(Handler::Handled);
}
fan_ctrl.set_auto_mode(true);
if fan_ctrl.fan_pwm_recommended() {
send_line(socket, b"{}");
} else {
send_line(socket, b"{ \"warning\": \"this fan doesn't have full PWM support. Use it at your own risk!\" }");
}
Ok(Handler::Handled)
}
fn fan_curve(socket: &mut TcpSocket, fan_ctrl: &mut FanCtrl, k_a: f32, k_b: f32, k_c: f32) -> Result<Handler, Error> {
fan_ctrl.set_curve(k_a, k_b, k_c);
send_line(socket, b"{}");
Ok(Handler::Handled)
}
fn fan_defaults(socket: &mut TcpSocket, fan_ctrl: &mut FanCtrl) -> Result<Handler, Error> {
fan_ctrl.restore_defaults();
send_line(socket, b"{}");
Ok(Handler::Handled)
}
fn show_hwrev(socket: &mut TcpSocket, hwrev: HWRev) -> Result<Handler, Error> {
match hwrev.summary() {
Ok(buf) => {
send_line(socket, &buf);
Ok(Handler::Handled)
}
Err(e) => {
error!("unable to serialize HWRev summary: {:?}", e);
let _ = writeln!(socket, "{{\"error\":\"{:?}\"}}", e);
Err(Error::ReportError)
}
}
}
pub fn handle_command(command: Command, socket: &mut TcpSocket, channels: &mut Channels, session: &Session, leds: &mut Leds, store: &mut FlashStore, ipv4_config: &mut Ipv4Config, fan_ctrl: &mut FanCtrl, hwrev: HWRev) -> Result<Self, Error> {
match command { match command {
Command::Quit => Ok(Handler::CloseSocket), Command::Quit => Ok(Handler::CloseSocket),
Command::Reporting(_reporting) => Handler::reporting(socket), Command::Reporting(_reporting) => Handler::reporting(socket),
@ -363,7 +437,13 @@ impl Handler {
Command::Save { channel } => Handler::save_channel(socket, channels, channel, store), Command::Save { channel } => Handler::save_channel(socket, channels, channel, store),
Command::Ipv4(config) => Handler::set_ipv4(socket, store, config), Command::Ipv4(config) => Handler::set_ipv4(socket, store, config),
Command::Reset => Handler::reset(channels), Command::Reset => Handler::reset(channels),
Command::Dfu => Handler::dfu(channels) Command::Dfu => Handler::dfu(channels),
Command::FanSet {fan_pwm} => Handler::set_fan(socket, fan_pwm, fan_ctrl),
Command::ShowFan => Handler::show_fan(socket, fan_ctrl),
Command::FanAuto => Handler::fan_auto(socket, fan_ctrl),
Command::FanCurve { k_a, k_b, k_c } => Handler::fan_curve(socket, fan_ctrl, k_a, k_b, k_c),
Command::FanCurveDefaults => Handler::fan_defaults(socket, fan_ctrl),
Command::ShowHWRev => Handler::show_hwrev(socket, hwrev),
} }
} }
} }

107
src/command_parser.rs
View File

@ -10,6 +10,7 @@ use nom::{
sequence::preceded, sequence::preceded,
multi::{fold_many0, fold_many1}, multi::{fold_many0, fold_many1},
error::ErrorKind, error::ErrorKind,
Needed,
}; };
use num_traits::{Num, ParseFloatError}; use num_traits::{Num, ParseFloatError};
use serde::{Serialize, Deserialize}; use serde::{Serialize, Deserialize};
@ -178,6 +179,18 @@ pub enum Command {
rate: Option<f32>, rate: Option<f32>,
}, },
Dfu, Dfu,
FanSet {
fan_pwm: u32
},
FanAuto,
ShowFan,
FanCurve {
k_a: f32,
k_b: f32,
k_c: f32,
},
FanCurveDefaults,
ShowHWRev,
} }
fn end(input: &[u8]) -> IResult<&[u8], ()> { fn end(input: &[u8]) -> IResult<&[u8], ()> {
@ -520,6 +533,57 @@ fn ipv4(input: &[u8]) -> IResult<&[u8], Result<Command, Error>> {
))(input) ))(input)
} }
fn fan(input: &[u8]) -> IResult<&[u8], Result<Command, Error>> {
let (input, _) = tag("fan")(input)?;
alt((
|input| {
let (input, _) = whitespace(input)?;
let (input, result) = alt((
|input| {
let (input, _) = tag("auto")(input)?;
Ok((input, Ok(Command::FanAuto)))
},
|input| {
let (input, value) = unsigned(input)?;
Ok((input, Ok(Command::FanSet { fan_pwm: value.unwrap_or(0)})))
},
))(input)?;
Ok((input, result))
},
value(Ok(Command::ShowFan), end)
))(input)
}
fn fan_curve(input: &[u8]) -> IResult<&[u8], Result<Command, Error>> {
let (input, _) = tag("fcurve")(input)?;
alt((
|input| {
let (input, _) = whitespace(input)?;
let (input, result) = alt((
|input| {
let (input, _) = tag("default")(input)?;
Ok((input, Ok(Command::FanCurveDefaults)))
},
|input| {
let (input, k_a) = float(input)?;
let (input, _) = whitespace(input)?;
let (input, k_b) = float(input)?;
let (input, _) = whitespace(input)?;
let (input, k_c) = float(input)?;
if k_a.is_ok() && k_b.is_ok() && k_c.is_ok() {
Ok((input, Ok(Command::FanCurve { k_a: k_a.unwrap() as f32, k_b: k_b.unwrap() as f32, k_c: k_c.unwrap() as f32 })))
} else {
Err(nom::Err::Incomplete(Needed::Size(3)))
}
},
))(input)?;
Ok((input, result))
},
value(Err(Error::Incomplete), end)
))(input)
}
fn command(input: &[u8]) -> IResult<&[u8], Result<Command, Error>> { fn command(input: &[u8]) -> IResult<&[u8], Result<Command, Error>> {
alt((value(Ok(Command::Quit), tag("quit")), alt((value(Ok(Command::Quit), tag("quit")),
load, load,
@ -533,6 +597,9 @@ fn command(input: &[u8]) -> IResult<&[u8], Result<Command, Error>> {
steinhart_hart, steinhart_hart,
postfilter, postfilter,
value(Ok(Command::Dfu), tag("dfu")), value(Ok(Command::Dfu), tag("dfu")),
fan,
fan_curve,
value(Ok(Command::ShowHWRev), tag("hwrev")),
))(input) ))(input)
} }
@ -754,4 +821,44 @@ mod test {
center: CenterPoint::Vref, center: CenterPoint::Vref,
})); }));
} }
#[test]
fn parse_fan_show() {
let command = Command::parse(b"fan");
assert_eq!(command, Ok(Command::ShowFan));
}
#[test]
fn parse_fan_set() {
let command = Command::parse(b"fan 42");
assert_eq!(command, Ok(Command::FanSet {fan_pwm: 42}));
}
#[test]
fn parse_fan_auto() {
let command = Command::parse(b"fan auto");
assert_eq!(command, Ok(Command::FanAuto));
}
#[test]
fn parse_fcurve_set() {
let command = Command::parse(b"fcurve 1.2 3.4 5.6");
assert_eq!(command, Ok(Command::FanCurve {
k_a: 1.2,
k_b: 3.4,
k_c: 5.6
}));
}
#[test]
fn parse_fcurve_default() {
let command = Command::parse(b"fcurve default");
assert_eq!(command, Ok(Command::FanCurveDefaults));
}
#[test]
fn parse_hwrev() {
let command = Command::parse(b"hwrev");
assert_eq!(command, Ok(Command::ShowHWRev));
}
} }

151
src/fan_ctrl.rs Normal file
View File

@ -0,0 +1,151 @@
use num_traits::Float;
use serde::Serialize;
use stm32f4xx_hal::{
pwm::{self, PwmChannels},
pac::TIM8,
};
use crate::{
hw_rev::HWSettings,
command_handler::JsonBuffer,
};
pub type FanPin = PwmChannels<TIM8, pwm::C4>;
// as stated in the schematics
const MAX_TEC_I: f32 = 3.0;
const MAX_USER_FAN_PWM: f32 = 100.0;
const MIN_USER_FAN_PWM: f32 = 1.0;
pub struct FanCtrl {
fan: Option<FanPin>,
fan_auto: bool,
pwm_enabled: bool,
k_a: f32,
k_b: f32,
k_c: f32,
abs_max_tec_i: f32,
hw_settings: HWSettings,
}
impl FanCtrl {
pub fn new(fan: Option<FanPin>, hw_settings: HWSettings) -> Self {
let mut fan_ctrl = FanCtrl {
fan,
// do not enable auto mode by default,
// but allow to turn it at the user's own risk
fan_auto: hw_settings.fan_pwm_recommended,
pwm_enabled: false,
k_a: hw_settings.fan_k_a,
k_b: hw_settings.fan_k_b,
k_c: hw_settings.fan_k_c,
abs_max_tec_i: 0f32,
hw_settings,
};
if fan_ctrl.fan_auto {
fan_ctrl.enable_pwm();
}
fan_ctrl
}
pub fn cycle(&mut self, abs_max_tec_i: f32) {
self.abs_max_tec_i = abs_max_tec_i;
if self.fan_auto && self.hw_settings.fan_available {
let scaled_current = self.abs_max_tec_i / MAX_TEC_I;
// do not limit upper bound, as it will be limited in the set_pwm()
let pwm = (MAX_USER_FAN_PWM * (scaled_current * (scaled_current * self.k_a + self.k_b) + self.k_c)) as u32;
self.set_pwm(pwm);
}
}
pub fn summary(&mut self) -> Result<JsonBuffer, serde_json_core::ser::Error> {
if self.hw_settings.fan_available {
let summary = FanSummary {
fan_pwm: self.get_pwm(),
abs_max_tec_i: self.abs_max_tec_i,
auto_mode: self.fan_auto,
k_a: self.k_a,
k_b: self.k_b,
k_c: self.k_c,
};
serde_json_core::to_vec(&summary)
} else {
let summary: Option<()> = None;
serde_json_core::to_vec(&summary)
}
}
pub fn set_auto_mode(&mut self, fan_auto: bool) {
self.fan_auto = fan_auto;
}
pub fn set_curve(&mut self, k_a: f32, k_b: f32, k_c: f32) {
self.k_a = k_a;
self.k_b = k_b;
self.k_c = k_c;
}
pub fn restore_defaults(&mut self) {
self.set_curve(self.hw_settings.fan_k_a,
self.hw_settings.fan_k_b,
self.hw_settings.fan_k_c);
}
pub fn set_pwm(&mut self, fan_pwm: u32) -> f32 {
if self.fan.is_none() || (!self.pwm_enabled && !self.enable_pwm()) {
return 0f32;
}
let fan = self.fan.as_mut().unwrap();
let fan_pwm = fan_pwm.min(MAX_USER_FAN_PWM as u32).max(MIN_USER_FAN_PWM as u32);
let duty = scale_number(fan_pwm as f32, self.hw_settings.min_fan_pwm, self.hw_settings.max_fan_pwm, MIN_USER_FAN_PWM, MAX_USER_FAN_PWM);
let max = fan.get_max_duty();
let value = ((duty * (max as f32)) as u16).min(max);
fan.set_duty(value);
value as f32 / (max as f32)
}
pub fn fan_pwm_recommended(&self) -> bool {
self.hw_settings.fan_pwm_recommended
}
pub fn fan_available(&self) -> bool {
self.hw_settings.fan_available
}
fn get_pwm(&self) -> u32 {
if let Some(fan) = &self.fan {
let duty = fan.get_duty();
let max = fan.get_max_duty();
scale_number(duty as f32 / (max as f32), MIN_USER_FAN_PWM, MAX_USER_FAN_PWM, self.hw_settings.min_fan_pwm, self.hw_settings.max_fan_pwm).round() as u32
} else { 0 }
}
fn enable_pwm(&mut self) -> bool {
if self.fan.is_some() && self.hw_settings.fan_available {
let fan = self.fan.as_mut().unwrap();
fan.set_duty(0);
fan.enable();
self.pwm_enabled = true;
true
} else {
false
}
}
}
fn scale_number(unscaled: f32, to_min: f32, to_max: f32, from_min: f32, from_max: f32) -> f32 {
(to_max - to_min) * (unscaled - from_min) / (from_max - from_min) + to_min
}
#[derive(Serialize)]
pub struct FanSummary {
fan_pwm: u32,
abs_max_tec_i: f32,
auto_mode: bool,
k_a: f32,
k_b: f32,
k_c: f32,
}

82
src/hw_rev.rs Normal file
View File

@ -0,0 +1,82 @@
use serde::Serialize;
use crate::{
pins::HWRevPins,
command_handler::JsonBuffer,
};
#[derive(Serialize, Copy, Clone)]
pub struct HWRev {
pub major: u8,
pub minor: u8,
}
#[derive(Serialize, Clone)]
pub struct HWSettings {
pub fan_k_a: f32,
pub fan_k_b: f32,
pub fan_k_c: f32,
pub min_fan_pwm: f32,
pub max_fan_pwm: f32,
pub fan_pwm_freq_hz: u32,
pub fan_available: bool,
pub fan_pwm_recommended: bool,
}
#[derive(Serialize, Clone)]
struct HWSummary<'a> {
rev: &'a HWRev,
settings: &'a HWSettings,
}
impl HWRev {
pub fn detect_hw_rev(hwrev_pins: &HWRevPins) -> Self {
let (h0, h1, h2, h3) = (hwrev_pins.hwrev0.is_high(), hwrev_pins.hwrev1.is_high(),
hwrev_pins.hwrev2.is_high(), hwrev_pins.hwrev3.is_high());
match (h0, h1, h2, h3) {
(true, true, true, false) => HWRev { major: 1, minor: 0 },
(true, false, false, false) => HWRev { major: 2, minor: 0 },
(false, true, false, false) => HWRev { major: 2, minor: 2 },
(_, _, _, _) => HWRev { major: 0, minor: 0 }
}
}
pub fn settings(&self) -> HWSettings {
match (self.major, self.minor) {
(2, 2) => HWSettings {
fan_k_a: 1.0,
fan_k_b: 0.0,
fan_k_c: 0.0,
// below this value motor's autostart feature may fail,
// according to internal experiments
min_fan_pwm: 0.04,
max_fan_pwm: 1.0,
// According to `SUNON DC Brushless Fan & Blower(255-E)` catalogue p.36-37
// model MF35101V1-1000U-G99 doesn't have a PWM wire, but we'll follow their others models'
// recommended frequency, as it is said by the Thermostat's schematics that we can
// use PWM, but not stated at which frequency
fan_pwm_freq_hz: 25_000,
fan_available: true,
// see https://github.com/sinara-hw/Thermostat/issues/115 and
// https://git.m-labs.hk/M-Labs/thermostat/issues/69#issuecomment-6464 for explanation
fan_pwm_recommended: false,
},
(_, _) => HWSettings {
fan_k_a: 0.0,
fan_k_b: 0.0,
fan_k_c: 0.0,
min_fan_pwm: 0.0,
max_fan_pwm: 0.0,
fan_pwm_freq_hz: 0,
fan_available: false,
fan_pwm_recommended: false,
}
}
}
pub fn summary(&self) -> Result<JsonBuffer, serde_json_core::ser::Error> {
let settings = self.settings();
let summary = HWSummary { rev: self, settings: &settings };
serde_json_core::to_vec(&summary)
}
}

15
src/main.rs
View File

@ -10,7 +10,6 @@ use panic_abort as _;
use panic_semihosting as _; use panic_semihosting as _;
use log::{error, info, warn}; use log::{error, info, warn};
use cortex_m::asm::wfi; use cortex_m::asm::wfi;
use cortex_m_rt::entry; use cortex_m_rt::entry;
use stm32f4xx_hal::{ use stm32f4xx_hal::{
@ -54,6 +53,9 @@ mod flash_store;
mod dfu; mod dfu;
mod command_handler; mod command_handler;
use command_handler::Handler; use command_handler::Handler;
mod fan_ctrl;
use fan_ctrl::FanCtrl;
mod hw_rev;
const HSE: MegaHertz = MegaHertz(8); const HSE: MegaHertz = MegaHertz(8);
#[cfg(not(feature = "semihosting"))] #[cfg(not(feature = "semihosting"))]
@ -118,8 +120,8 @@ fn main() -> ! {
timer::setup(cp.SYST, clocks); timer::setup(cp.SYST, clocks);
let (pins, mut leds, mut eeprom, eth_pins, usb) = Pins::setup( let (pins, mut leds, mut eeprom, eth_pins, usb, fan, hwrev, hw_settings) = Pins::setup(
clocks, dp.TIM1, dp.TIM3, clocks, dp.TIM1, dp.TIM3, dp.TIM8,
dp.GPIOA, dp.GPIOB, dp.GPIOC, dp.GPIOD, dp.GPIOE, dp.GPIOF, dp.GPIOG, dp.GPIOA, dp.GPIOB, dp.GPIOC, dp.GPIOD, dp.GPIOE, dp.GPIOF, dp.GPIOG,
dp.I2C1, dp.I2C1,
dp.SPI2, dp.SPI4, dp.SPI5, dp.SPI2, dp.SPI4, dp.SPI5,
@ -137,7 +139,6 @@ fn main() -> ! {
let mut store = flash_store::store(dp.FLASH); let mut store = flash_store::store(dp.FLASH);
let mut channels = Channels::new(pins); let mut channels = Channels::new(pins);
for c in 0..CHANNELS { for c in 0..CHANNELS {
match store.read_value::<ChannelConfig>(CHANNEL_CONFIG_KEY[c]) { match store.read_value::<ChannelConfig>(CHANNEL_CONFIG_KEY[c]) {
@ -150,6 +151,8 @@ fn main() -> ! {
} }
} }
let mut fan_ctrl = FanCtrl::new(fan, hw_settings);
// default net config: // default net config:
let mut ipv4_config = Ipv4Config { let mut ipv4_config = Ipv4Config {
address: [192, 168, 1, 26], address: [192, 168, 1, 26],
@ -183,6 +186,8 @@ fn main() -> ! {
server.for_each(|_, session| session.set_report_pending(channel.into())); server.for_each(|_, session| session.set_report_pending(channel.into()));
} }
fan_ctrl.cycle(channels.current_abs_max_tec_i() as f32);
let instant = Instant::from_millis(i64::from(timer::now())); let instant = Instant::from_millis(i64::from(timer::now()));
cortex_m::interrupt::free(net::clear_pending); cortex_m::interrupt::free(net::clear_pending);
server.poll(instant) server.poll(instant)
@ -206,7 +211,7 @@ fn main() -> ! {
// Do nothing and feed more data to the line reader in the next loop cycle. // Do nothing and feed more data to the line reader in the next loop cycle.
Ok(SessionInput::Nothing) => {} Ok(SessionInput::Nothing) => {}
Ok(SessionInput::Command(command)) => { Ok(SessionInput::Command(command)) => {
match Handler::handle_command(command, &mut socket, &mut channels, session, &mut leds, &mut store, &mut ipv4_config) { match Handler::handle_command(command, &mut socket, &mut channels, session, &mut leds, &mut store, &mut ipv4_config, &mut fan_ctrl, hwrev) {
Ok(Handler::NewIPV4(ip)) => new_ipv4_config = Some(ip), Ok(Handler::NewIPV4(ip)) => new_ipv4_config = Some(ip),
Ok(Handler::Handled) => {}, Ok(Handler::Handled) => {},
Ok(Handler::CloseSocket) => socket.close(), Ok(Handler::CloseSocket) => socket.close(),

25
src/pins.rs
View File

@ -23,7 +23,7 @@ use stm32f4xx_hal::{
I2C1, I2C1,
OTG_FS_GLOBAL, OTG_FS_DEVICE, OTG_FS_PWRCLK, OTG_FS_GLOBAL, OTG_FS_DEVICE, OTG_FS_PWRCLK,
SPI2, SPI4, SPI5, SPI2, SPI4, SPI5,
TIM1, TIM3, TIM1, TIM3, TIM8
}, },
timer::Timer, timer::Timer,
time::U32Ext, time::U32Ext,
@ -33,6 +33,8 @@ use stm32_eth::EthPins;
use crate::{ use crate::{
channel::{Channel0, Channel1}, channel::{Channel0, Channel1},
leds::Leds, leds::Leds,
fan_ctrl::FanPin,
hw_rev::{HWRev, HWSettings},
}; };
pub type Eeprom = Eeprom24x< pub type Eeprom = Eeprom24x<
@ -101,6 +103,13 @@ pub struct ChannelPinSet<C: ChannelPins> {
pub tec_u_meas_pin: C::TecUMeasPin, pub tec_u_meas_pin: C::TecUMeasPin,
} }
pub struct HWRevPins {
pub hwrev0: stm32f4xx_hal::gpio::gpiod::PD0<Input<Floating>>,
pub hwrev1: stm32f4xx_hal::gpio::gpiod::PD1<Input<Floating>>,
pub hwrev2: stm32f4xx_hal::gpio::gpiod::PD2<Input<Floating>>,
pub hwrev3: stm32f4xx_hal::gpio::gpiod::PD3<Input<Floating>>,
}
pub struct Pins { pub struct Pins {
pub adc_spi: AdcSpi, pub adc_spi: AdcSpi,
pub adc_nss: AdcNss, pub adc_nss: AdcNss,
@ -114,13 +123,13 @@ impl Pins {
/// Setup GPIO pins and configure MCU peripherals /// Setup GPIO pins and configure MCU peripherals
pub fn setup( pub fn setup(
clocks: Clocks, clocks: Clocks,
tim1: TIM1, tim3: TIM3, tim1: TIM1, tim3: TIM3, tim8: TIM8,
gpioa: GPIOA, gpiob: GPIOB, gpioc: GPIOC, gpiod: GPIOD, gpioe: GPIOE, gpiof: GPIOF, gpiog: GPIOG, gpioa: GPIOA, gpiob: GPIOB, gpioc: GPIOC, gpiod: GPIOD, gpioe: GPIOE, gpiof: GPIOF, gpiog: GPIOG,
i2c1: I2C1, i2c1: I2C1,
spi2: SPI2, spi4: SPI4, spi5: SPI5, spi2: SPI2, spi4: SPI4, spi5: SPI5,
adc1: ADC1, adc1: ADC1,
otg_fs_global: OTG_FS_GLOBAL, otg_fs_device: OTG_FS_DEVICE, otg_fs_pwrclk: OTG_FS_PWRCLK, otg_fs_global: OTG_FS_GLOBAL, otg_fs_device: OTG_FS_DEVICE, otg_fs_pwrclk: OTG_FS_PWRCLK,
) -> (Self, Leds, Eeprom, EthernetPins, USB) { ) -> (Self, Leds, Eeprom, EthernetPins, USB, Option<FanPin>, HWRev, HWSettings) {
let gpioa = gpioa.split(); let gpioa = gpioa.split();
let gpiob = gpiob.split(); let gpiob = gpiob.split();
let gpioc = gpioc.split(); let gpioc = gpioc.split();
@ -189,6 +198,10 @@ impl Pins {
channel1, channel1,
}; };
let hwrev = HWRev::detect_hw_rev(&HWRevPins {hwrev0: gpiod.pd0, hwrev1: gpiod.pd1,
hwrev2: gpiod.pd2, hwrev3: gpiod.pd3});
let hw_settings = hwrev.settings();
let leds = Leds::new(gpiod.pd9, gpiod.pd10.into_push_pull_output(), gpiod.pd11.into_push_pull_output()); let leds = Leds::new(gpiod.pd9, gpiod.pd10.into_push_pull_output(), gpiod.pd11.into_push_pull_output());
let eeprom_scl = gpiob.pb8.into_alternate().set_open_drain(); let eeprom_scl = gpiob.pb8.into_alternate().set_open_drain();
@ -215,7 +228,11 @@ impl Pins {
hclk: clocks.hclk(), hclk: clocks.hclk(),
}; };
(pins, leds, eeprom, eth_pins, usb) let fan = if hw_settings.fan_available {
Some(Timer::new(tim8, &clocks).pwm(gpioc.pc9.into_alternate(), hw_settings.fan_pwm_freq_hz.hz()))
} else { None };
(pins, leds, eeprom, eth_pins, usb, fan, hwrev, hw_settings)
} }
/// Configure the GPIO pins for SPI operation, and initialize SPI /// Configure the GPIO pins for SPI operation, and initialize SPI