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thermostat
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Support fan PWM settings #73

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sb10q merged 16 commits from esavkin/thermostat:69-fan_pwm into master 2023-03-22 17:15:49 +08:00
Conversation 9 Commits 16 Files Changed 8 +131 -56
7 changed files with 131 additions and 56 deletions
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1
README.md
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@ -124,6 +124,7 @@ formatted as line-delimited JSON.
| `reset` | Reset the device |
| `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 |
| `fan <value>` | Set fan power with values from 0 to 100, where 0 is auto mode (TODO) |
## USB

64
src/channels.rs
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@ -19,12 +19,19 @@ use crate::{
pins,
steinhart_hart,
};
use crate::pins::HWRevPins;
pub const CHANNELS: usize = 2;
pub const R_SENSE: f64 = 0.05;
// DAC chip outputs 0-5v, which is then passed through a resistor dividor to provide 0-3v range
const DAC_OUT_V_MAX: f64 = 3.0;
#[derive(Serialize, Copy, Clone)]
pub struct HWRev {
pub major: u8,
pub minor: u8
}
// TODO: -pub
pub struct Channels {
channel0: Channel<Channel0>,
@ -33,6 +40,7 @@ pub struct Channels {
/// stm32f4 integrated adc
pins_adc: pins::PinsAdc,
pub pwm: pins::PwmPins,
pub hw_rev: HWRev
}
impl Channels {
@ -54,7 +62,7 @@ impl Channels {
let channel1 = Channel::new(pins.channel1, adc_calibration1);
let pins_adc = pins.pins_adc;
let pwm = pins.pwm;
let mut channels = Channels { channel0, channel1, adc, pins_adc, pwm };
let mut channels = Channels { channel0, channel1, adc, pins_adc, pwm, hw_rev: Self::detect_hw_rev(&pins.hwrev) };
for channel in 0..CHANNELS {
channels.channel_state(channel).vref = channels.read_vref(channel);
channels.calibrate_dac_value(channel);
@ -63,6 +71,17 @@ impl Channels {
channels
}
fn detect_hw_rev(hwrev_pins: &HWRevPins) -> HWRev {
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 channel_state<I: Into<usize>>(&mut self, channel: I) -> &mut ChannelState {
match channel.into() {
0 => &mut self.channel0.state,
@ -336,22 +355,20 @@ impl Channels {
match (channel, pin) {
(_, PwmPin::ISet) =>
panic!("i_set is no pwm pin"),
(_, PwmPin::Fan) =>
get(&self.pwm.fan),
(0, PwmPin::MaxIPos) =>
get(&self.pwm.max_i_pos0),
(0, PwmPin::MaxINeg) =>
get(&self.pwm.max_i_neg0),
(0, PwmPin::MaxV) =>
get(&self.pwm.max_v0),
(0, PwmPin::Fan) =>
get(&self.pwm.fan),
(1, PwmPin::MaxIPos) =>
get(&self.pwm.max_i_pos1),
(1, PwmPin::MaxINeg) =>
get(&self.pwm.max_i_neg1),
(1, PwmPin::MaxV) =>
get(&self.pwm.max_v1),
(1, PwmPin::Fan) =>
get(&self.pwm.fan),
_ =>
unreachable!(),
}
@ -395,22 +412,20 @@ impl Channels {
match (channel, pin) {
(_, PwmPin::ISet) =>
panic!("i_set is no pwm pin"),
(_, PwmPin::Fan) =>
set(&mut self.pwm.fan, duty),
(0, PwmPin::MaxIPos) =>
set(&mut self.pwm.max_i_pos0, duty),
(0, PwmPin::MaxINeg) =>
set(&mut self.pwm.max_i_neg0, duty),
(0, PwmPin::MaxV) =>
set(&mut self.pwm.max_v0, duty),
(0, PwmPin::Fan) =>
set(&mut self.pwm.fan, duty),
(1, PwmPin::MaxIPos) =>
set(&mut self.pwm.max_i_pos1, duty),
(1, PwmPin::MaxINeg) =>
set(&mut self.pwm.max_i_neg1, duty),
(1, PwmPin::MaxV) =>
set(&mut self.pwm.max_v1, duty),
(1, PwmPin::Fan) =>
set(&mut self.pwm.fan, duty),
_ =>
unreachable!(),
}
@ -437,7 +452,16 @@ impl Channels {
(duty * max, max)
}
fn report(&mut self, channel: usize) -> Report {
pub fn set_fan_pwm(&mut self, fan_pwm: u32) -> f64 {
let duty = fan_pwm as f64 / 100.0;
self.set_pwm(0, PwmPin::Fan, duty)
}
pub fn get_fan_pwm(&mut self) -> u32 {
(self.get_pwm(0, PwmPin::Fan) * 100.0) as u32
}
fn report(&mut self, channel: usize, tacho: Option<u32>) -> Report {
let vref = self.channel_state(channel).vref;
let i_set = self.get_i(channel);
let i_tec = self.read_itec(channel);
@ -462,13 +486,15 @@ impl Channels {
tec_i,
tec_u_meas: self.get_tec_v(channel),
pid_output,
tacho,
hwrev: self.hw_rev
}
}
pub fn reports_json(&mut self) -> Result<JsonBuffer, serde_json_core::ser::Error> {
pub fn reports_json(&mut self, tacho: Option<u32>) -> Result<JsonBuffer, serde_json_core::ser::Error> {
let mut reports = Vec::<_, U2>::new();
for channel in 0..CHANNELS {
let _ = reports.push(self.report(channel));
let _ = reports.push(self.report(channel, tacho));
}
serde_json_core::to_vec(&reports)
}
@ -481,7 +507,7 @@ impl Channels {
serde_json_core::to_vec(&summaries)
}
fn pwm_summary(&mut self, channel: usize, tacho: u32) -> PwmSummary {
fn pwm_summary(&mut self, channel: usize) -> PwmSummary {
PwmSummary {
channel,
center: CenterPointJson(self.channel_state(channel).center.clone()),
@ -489,15 +515,14 @@ impl Channels {
max_v: (self.get_max_v(channel), ElectricPotential::new::<volt>(5.0)).into(),
max_i_pos: self.get_max_i_pos(channel).into(),
max_i_neg: self.get_max_i_neg(channel).into(),
tacho: tacho * 1000 / 1024,
fan: self.get_pwm(0, PwmPin::Fan),
fan: self.get_fan_pwm(),
}
}
pub fn pwm_summaries_json(&mut self, tacho: u32) -> Result<JsonBuffer, serde_json_core::ser::Error> {
pub fn pwm_summaries_json(&mut self) -> Result<JsonBuffer, serde_json_core::ser::Error> {
let mut summaries = Vec::<_, U2>::new();
for channel in 0..CHANNELS {
let _ = summaries.push(self.pwm_summary(channel, tacho));
let _ = summaries.push(self.pwm_summary(channel));
}
serde_json_core::to_vec(&summaries)
}
@ -549,6 +574,8 @@ pub struct Report {
tec_i: ElectricCurrent,
tec_u_meas: ElectricPotential,
pid_output: ElectricCurrent,
tacho: Option<u32>,
hwrev: HWRev,
}
pub struct CenterPointJson(CenterPoint);
@ -588,8 +615,7 @@ pub struct PwmSummary {
max_v: PwmSummaryField<ElectricPotential>,
max_i_pos: PwmSummaryField<ElectricCurrent>,
max_i_neg: PwmSummaryField<ElectricCurrent>,
tacho: u32,
fan: f64,
fan: u32,
}
#[derive(Serialize)]

31
src/command_handler.rs
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@ -93,8 +93,8 @@ impl Handler {
Ok(Handler::Handled)
}
fn show_report(socket: &mut TcpSocket, channels: &mut Channels) -> Result<Handler, Error> {
match channels.reports_json() {
fn show_report(socket: &mut TcpSocket, channels: &mut Channels, tacho: Option<u32>) -> Result<Handler, Error> {
match channels.reports_json(tacho) {
Ok(buf) => {
send_line(socket, &buf[..]);
}
@ -121,8 +121,8 @@ impl Handler {
Ok(Handler::Handled)
}
fn show_pwm(socket: &mut TcpSocket, channels: &mut Channels, tacho: u32) -> Result<Handler, Error> {
match channels.pwm_summaries_json(tacho) {
fn show_pwm(socket: &mut TcpSocket, channels: &mut Channels) -> Result<Handler, Error> {
match channels.pwm_summaries_json() {
Ok(buf) => {
send_line(socket, &buf);
}
@ -200,7 +200,7 @@ impl Handler {
channels.set_max_i_neg(channel, current);
}
PwmPin::Fan => {
channels.set_pwm(channel, PwmPin::Fan, value);
channels.set_fan_pwm(value as u32);
}
}
send_line(socket, b"{}");
@ -344,14 +344,26 @@ impl Handler {
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, tacho_value: u32) -> Result<Self, Error> {
fn fan (channels: &mut Channels, fan_pwm: Option<u32>) -> Result<Handler, Error> {
match fan_pwm {
Some(val) => {
channels.set_fan_pwm(val);
Ok(Handler::Handled)
},
None => {
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, tacho_value: Option<u32>) -> Result<Self, Error> {
match command {
Command::Quit => Ok(Handler::CloseSocket),
Command::Reporting(_reporting) => Handler::reporting(socket),
Command::Show(ShowCommand::Reporting) => Handler::show_report_mode(socket, session),
Command::Show(ShowCommand::Input) => Handler::show_report(socket, channels),
Command::Show(ShowCommand::Input) => Handler::show_report(socket, channels, tacho_value),
Command::Show(ShowCommand::Pid) => Handler::show_pid(socket, channels),
Command::Show(ShowCommand::Pwm) => Handler::show_pwm(socket, channels, tacho_value),
Command::Show(ShowCommand::Pwm) => Handler::show_pwm(socket, channels),
Command::Show(ShowCommand::SteinhartHart) => Handler::show_steinhart_hart(socket, channels),
Command::Show(ShowCommand::PostFilter) => Handler::show_post_filter(socket, channels),
Command::Show(ShowCommand::Ipv4) => Handler::show_ipv4(socket, ipv4_config),
@ -366,7 +378,8 @@ impl Handler {
Command::Save { channel } => Handler::save_channel(socket, channels, channel, store),
Command::Ipv4(config) => Handler::set_ipv4(socket, store, config),
Command::Reset => Handler::reset(channels),
Command::Dfu => Handler::dfu(channels)
Command::Dfu => Handler::dfu(channels),
Command::Fan {fan_pwm} => Handler::fan(channels, fan_pwm)
}
}
}

30
src/command_parser.rs
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@ -179,6 +179,9 @@ pub enum Command {
rate: Option<f32>,
},
Dfu,
Fan {
fan_pwm: Option<u32>
}
}
fn end(input: &[u8]) -> IResult<&[u8], ()> {
@ -301,16 +304,6 @@ fn pwm_setup(input: &[u8]) -> IResult<&[u8], Result<(PwmPin, f64), Error>> {
),
result_with_pin(PwmPin::MaxV)
),
map(
preceded(
tag("fan"),
preceded(
whitespace,
float
)
),
result_with_pin(PwmPin::Fan)
)
)
)(input)
}
@ -532,6 +525,22 @@ fn ipv4(input: &[u8]) -> IResult<&[u8], Result<Command, Error>> {
))(input)
}
fn fan(input: &[u8]) -> IResult<&[u8], Result<Command, Error>> {
let (input, _) = tag("fan")(input)?;
let (input, fan_pwm) = alt((
|input| {
let (input, _) = whitespace(input)?;
let (input, value) = unsigned(input)?;
let (input, _) = end(input)?;
Ok((input, Some(value.unwrap_or(0))))
},
value(None, end)
))(input)?;
let result = Ok(Command::Fan { fan_pwm });
Ok((input, result))
}
fn command(input: &[u8]) -> IResult<&[u8], Result<Command, Error>> {
alt((value(Ok(Command::Quit), tag("quit")),
load,
@ -545,6 +554,7 @@ fn command(input: &[u8]) -> IResult<&[u8], Result<Command, Error>> {
steinhart_hart,
postfilter,
value(Ok(Command::Dfu), tag("dfu")),
fan,
))(input)
}

0
src/fan_ctrl.rs Normal file
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49
src/main.rs
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@ -152,6 +152,8 @@ fn main() -> ! {
}
}
let fan_available = channels.hw_rev.major == 2 && channels.hw_rev.minor == 2;
// default net config:
let mut ipv4_config = Ipv4Config {
address: [192, 168, 1, 26],
@ -172,17 +174,26 @@ fn main() -> ! {
let hwaddr = EthernetAddress(eui48);
info!("EEPROM MAC address: {}", hwaddr);
tacho.make_interrupt_source(&mut dp.SYSCFG.constrain());
tacho.trigger_on_edge(&mut dp.EXTI, Edge::Rising);
tacho.enable_interrupt(&mut dp.EXTI);
if fan_available {
// These lines do not cause NVIC to run the ISR,
// since the interrupt should be unmasked in the cortex_m::peripheral::NVIC.
// Also using interrupt-related workaround is the best
// option for the current version of stm32f4xx-hal,
// since tying the IC's PC8 with the PWM's PC9 to the same TIM8 is not supported,
// and therefore would require even more weirder and unsafe hacks.
// Also such hacks wouldn't guarantee it to be more precise.
tacho.make_interrupt_source(&mut dp.SYSCFG.constrain());
tacho.trigger_on_edge(&mut dp.EXTI, Edge::Rising);
tacho.enable_interrupt(&mut dp.EXTI);
}
net::run(clocks, dp.ETHERNET_MAC, dp.ETHERNET_DMA, eth_pins, hwaddr, ipv4_config.clone(), |iface| {
Server::<Session>::run(iface, |server| {
leds.r1.off();
let mut should_reset = false;
let (mut tacho_cnt, mut tacho_value) = (0u32, 0u32);
let mut prev_epoch = i64::from(timer::now()) >> 10;
let (mut tacho_cnt, mut tacho_value) = (0u32, None);
let mut prev_epoch: i64 = 0;
loop {
let mut new_ipv4_config = None;
@ -193,17 +204,23 @@ fn main() -> ! {
}
let instant = Instant::from_millis(i64::from(timer::now()));
let tacho_input = tacho.check_interrupt();
tacho.clear_interrupt_pending_bit();
if tacho_input {
tacho_cnt += 1;
}
let epoch = instant.millis >> 10;
if epoch > prev_epoch {
tacho_value = tacho_cnt;
tacho_cnt = 0;
prev_epoch = epoch;
if fan_available {
let mut tacho_input = false;
cortex_m::interrupt::free(|_cs| {
tacho_input = tacho.check_interrupt();
tacho.clear_interrupt_pending_bit();
});
if tacho_input {
tacho_cnt += 1;
}
let epoch = instant.secs();
if epoch > prev_epoch {
tacho_value = Some(tacho_cnt);
tacho_cnt = 0;
prev_epoch = epoch;
}
}
cortex_m::interrupt::free(net::clear_pending);
@ -245,7 +262,7 @@ fn main() -> ! {
}
} else if socket.can_send() {
if let Some(channel) = session.is_report_pending() {
match channels.reports_json() {
match channels.reports_json(tacho_value) {
Ok(buf) => {
send_line(&mut socket, &buf[..]);
session.mark_report_sent(channel);

12
src/pins.rs
View File

@ -101,6 +101,13 @@ pub struct ChannelPinSet<C: ChannelPins> {
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 adc_spi: AdcSpi,
pub adc_nss: AdcNss,
@ -108,6 +115,7 @@ pub struct Pins {
pub pwm: PwmPins,
pub channel0: ChannelPinSet<Channel0>,
pub channel1: ChannelPinSet<Channel1>,
pub hwrev: HWRevPins
}
impl Pins {
@ -141,8 +149,6 @@ impl Pins {
gpioe.pe13, gpioe.pe14, gpioc.pc9
);
// let tacho = gpioc.pc8.into_floating_input().into_input_pin()();
let (dac0_spi, dac0_sync) = Self::setup_dac0(
clocks, spi4,
gpioe.pe2, gpioe.pe4, gpioe.pe6
@ -189,6 +195,8 @@ impl Pins {
pwm,
channel0,
channel1,
hwrev: HWRevPins {hwrev0: gpiod.pd0, hwrev1: gpiod.pd1,
hwrev2: gpiod.pd2, hwrev3: gpiod.pd3}
};
let leds = Leds::new(gpiod.pd9, gpiod.pd10.into_push_pull_output(), gpiod.pd11.into_push_pull_output());