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thermostat
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TCP command: Rename `pwm` to `output` 

Current limit pins are driven by PWM inputs to the MAX1968 driver, but
this is an implementation detail, and should not be exposed in the form
of the command interface. Rename "pwm" to "output" in all instances.

See #62 (comment).
This commit is contained in:
atse 2024-08-15 17:38:03 +08:00
parent fcb5cf1d4e
commit d7496e3362
7 changed files with 99 additions and 99 deletions
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32
README.md
View File

@ -93,15 +93,15 @@ Send commands as simple text string terminated by `\n`. Responses are
formatted as line-delimited JSON.
| Syntax | Function |
|------------------------------------------- |-------------------------------------------------------------------------------|
|-------------------------------------------|-------------------------------------------------------------------------------|
| `report` | Show current input |
| `pwm` | Show current PWM settings |
| `pwm <0/1> max_i_pos <amp>` | Set maximum positive output current, clamped to [0, 2] |
| `pwm <0/1> max_i_neg <amp>` | Set maximum negative output current, clamped to [0, 2] |
| `pwm <0/1> max_v <volt>` | Set maximum output voltage, clamped to [0, 4] |
| `pwm <0/1> i_set <amp>` | Disengage PID, set fixed output current, clamped to [-2, 2] |
| `pwm <0/1> polarity <normal/reversed>` | Set output current polarity, with 'normal' being the front panel polarity |
| `pwm <0/1> pid` | Let output current to be controlled by the PID |
| `output` | Show current output settings |
| `output <0/1> max_i_pos <amp>` | Set maximum positive output current, clamped to [0, 2] |
| `output <0/1> max_i_neg <amp>` | Set maximum negative output current, clamped to [0, 2] |
| `output <0/1> max_v <volt>` | Set maximum output voltage, clamped to [0, 4] |
| `output <0/1> i_set <amp>` | Disengage PID, set fixed output current, clamped to [-2, 2] |
| `output <0/1> polarity <normal/reversed>` | Set output current polarity, with 'normal' being the front panel polarity |
| `output <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> vref` | Set the MAX1968 0A-centerpoint to measure from VREF |
| `pid` | Show PID configuration |
@ -183,7 +183,7 @@ postfilter rate can be tuned with the `postfilter` command.
When using a TEC module with the Thermostat, the Thermostat expects the thermal load (where the thermistor is located) to cool down with a positive software current set point, and heat up with a negative current set point.
If the Thermostat is used for temperature control with the Sinara 5432 DAC "Zotino", and is connected via an IDC cable, the TEC polarity may need to be reversed with the `pwm <ch> polarity reversed` TCP command.
If the Thermostat is used for temperature control with the Sinara 5432 DAC "Zotino", and is connected via an IDC cable, the TEC polarity may need to be reversed with the `output <ch> polarity reversed` TCP command.
Testing heat flow direction with a low set current is recommended before installation of the TEC module.
@ -192,7 +192,7 @@ Testing heat flow direction with a low set current is recommended before install
Each of the MAX1968 TEC driver has analog/PWM inputs for setting
output limits.
Use the `pwm` command to see current settings and maximum values.
Use the `output` command to see current settings and maximum values.
| Limit | Unit | Description |
| --- | :---: | --- |
@ -203,28 +203,28 @@ Use the `pwm` command to see current settings and maximum values.
Example: set the maximum voltage of channel 0 to 1.5 V.
```
pwm 0 max_v 1.5
output 0 max_v 1.5
```
Example: set the maximum negative current of channel 0 to -3 A.
```
pwm 0 max_i_neg 3
output 0 max_i_neg 3
```
Example: set the maximum positive current of channel 1 to 3 A.
```
pwm 0 max_i_pos 3
output 0 max_i_pos 3
```
### Open-loop mode
To manually control TEC output current, omit the limit parameter of
the `pwm` command. Doing so will disengage the PID control for that
the `output` command. Doing so will disengage the PID control for that
channel.
Example: set output current of channel 0 to 0 A.
```
pwm 0 i_set 0
output 0 i_set 0
```
## PID-stabilized temperature control
@ -237,7 +237,7 @@ pid 0 target 20
Enter closed-loop mode by switching control of the TEC output current
of channel 0 to the PID algorithm:
```
pwm 0 pid
output 0 pid
```
## LED indicators

4
pytec/autotune.py
View File

@ -253,9 +253,9 @@ def main():
tuner_out = tuner.output()
tec.set_param("pwm", channel, "i_set", tuner_out)
tec.set_param("output", channel, "i_set", tuner_out)
tec.set_param("pwm", channel, "i_set", 0)
tec.set_param("output", channel, "i_set", 0)
if __name__ == "__main__":

4
pytec/example.py
View File

@ -2,9 +2,9 @@ from pytec.client import Client
tec = Client() #(host="localhost", port=6667)
tec.set_param("s-h", 1, "t0", 20)
print(tec.get_pwm())
print(tec.get_output())
print(tec.get_pid())
print(tec.get_pwm())
print(tec.get_output())
print(tec.get_postfilter())
print(tec.get_steinhart_hart())
for data in tec.report_mode():

18
pytec/pytec/client.py
View File

@ -13,11 +13,11 @@ class Client:
self._check_zero_limits()
def _check_zero_limits(self):
pwm_report = self.get_pwm()
for pwm_channel in pwm_report:
output_report = self.get_output()
for output_channel in output_report:
for limit in ["max_i_neg", "max_i_pos", "max_v"]:
if pwm_channel[limit] == 0.0:
logging.warning("`{}` limit is set to zero on channel {}".format(limit, pwm_channel["channel"]))
if output_channel[limit] == 0.0:
logging.warning("`{}` limit is set to zero on channel {}".format(limit, output_channel["channel"]))
def _read_line(self):
# read more lines
@ -47,8 +47,8 @@ class Client:
result[int(item["channel"])] = item
return result
def get_pwm(self):
"""Retrieve PWM limits for the TEC
def get_output(self):
"""Retrieve output limits for the TEC
Example::
[{'channel': 0,
@ -67,7 +67,7 @@ class Client:
'polarity': 'normal',
]
"""
return self._get_conf("pwm")
return self._get_conf("output")
def get_pid(self):
"""Retrieve PID control state
@ -144,7 +144,7 @@ class Client:
"""Set configuration parameters
Examples::
tec.set_param("pwm", 0, "max_v", 2.0)
tec.set_param("output", 0, "max_v", 2.0)
tec.set_param("pid", 1, "output_max", 2.5)
tec.set_param("s-h", 0, "t0", 20.0)
tec.set_param("center", 0, "vref")
@ -161,7 +161,7 @@ class Client:
def power_up(self, channel, target):
"""Start closed-loop mode"""
self.set_param("pid", channel, "target", value=target)
self.set_param("pwm", channel, "pid")
self.set_param("output", channel, "pid")
def save_config(self):
"""Save current configuration to EEPROM"""

10
src/channels.rs
View File

@ -507,8 +507,8 @@ impl Channels {
false
}
fn pwm_summary(&mut self, channel: usize) -> PwmSummary {
PwmSummary {
fn output_summary(&mut self, channel: usize) -> OutputSummary {
OutputSummary {
channel,
center: CenterPointJson(self.channel_state(channel).center.clone()),
i_set: self.get_i(channel),
@ -519,10 +519,10 @@ impl Channels {
}
}
pub fn pwm_summaries_json(&mut self) -> Result<JsonBuffer, serde_json_core::ser::Error> {
pub fn output_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));
let _ = summaries.push(self.output_summary(channel));
}
serde_json_core::to_vec(&summaries)
}
@ -613,7 +613,7 @@ impl Serialize for PolarityJson {
}
#[derive(Serialize)]
pub struct PwmSummary {
pub struct OutputSummary {
channel: usize,
center: CenterPointJson,
i_set: ElectricCurrent,

10
src/command_handler.rs
View File

@ -116,7 +116,7 @@ impl Handler {
}
fn show_pwm(socket: &mut TcpSocket, channels: &mut Channels) -> Result<Handler, Error> {
match channels.pwm_summaries_json() {
match channels.output_summaries_json() {
Ok(buf) => {
send_line(socket, &buf);
}
@ -413,13 +413,13 @@ impl Handler {
Command::Quit => Ok(Handler::CloseSocket),
Command::Show(ShowCommand::Input) => Handler::show_report(socket, channels),
Command::Show(ShowCommand::Pid) => Handler::show_pid(socket, channels),
Command::Show(ShowCommand::Pwm) => Handler::show_pwm(socket, channels),
Command::Show(ShowCommand::Output) => 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),
Command::PwmPid { channel } => Handler::engage_pid(socket, channels, channel),
Command::PwmPolarity { channel, polarity } => Handler::set_polarity(socket, channels, channel, polarity),
Command::Pwm { channel, pin, value } => Handler::set_pwm(socket, channels, channel, pin, value),
Command::OutputPid { channel } => Handler::engage_pid(socket, channels, channel),
Command::OutputPolarity { channel, polarity } => Handler::set_polarity(socket, channels, channel, polarity),
Command::Output { channel, pin, value } => Handler::set_pwm(socket, channels, channel, pin, value),
Command::CenterPoint { channel, center } => Handler::set_center_point(socket, channels, channel, center),
Command::Pid { channel, parameter, value } => Handler::set_pid(socket, channels, channel, parameter, value),
Command::SteinhartHart { channel, parameter, value } => Handler::set_steinhart_hart(socket, channels, channel, parameter, value),

66
src/command_parser.rs
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@ -96,7 +96,7 @@ pub struct Ipv4Config {
#[derive(Debug, Clone, PartialEq)]
pub enum ShowCommand {
Input,
Pwm,
Output,
Pid,
SteinhartHart,
PostFilter,
@ -154,16 +154,16 @@ pub enum Command {
Ipv4(Ipv4Config),
Show(ShowCommand),
/// PWM parameter setting
Pwm {
Output {
channel: usize,
pin: PwmPin,
value: f64,
},
/// Enable PID control for `i_set`
PwmPid {
OutputPid {
channel: usize,
},
PwmPolarity {
OutputPolarity {
channel: usize,
polarity: Polarity,
},
@ -302,12 +302,12 @@ fn pwm_setup(input: &[u8]) -> IResult<&[u8], Result<(PwmPin, f64), Error>> {
)(input)
}
/// `pwm <0-1> pid` - Set PWM to be controlled by PID
fn pwm_pid(input: &[u8]) -> IResult<&[u8], ()> {
/// `output <0-1> pid` - Set output to be controlled by PID
fn output_pid(input: &[u8]) -> IResult<&[u8], ()> {
value((), tag("pid"))(input)
}
fn pwm_polarity(input: &[u8]) -> IResult<&[u8], Polarity> {
fn output_polarity(input: &[u8]) -> IResult<&[u8], Polarity> {
preceded(
tag("polarity"),
preceded(
@ -319,8 +319,8 @@ fn pwm_polarity(input: &[u8]) -> IResult<&[u8], Polarity> {
)(input)
}
fn pwm(input: &[u8]) -> IResult<&[u8], Result<Command, Error>> {
let (input, _) = tag("pwm")(input)?;
fn output(input: &[u8]) -> IResult<&[u8], Result<Command, Error>> {
let (input, _) = tag("output")(input)?;
alt((
|input| {
let (input, _) = whitespace(input)?;
@ -328,18 +328,18 @@ fn pwm(input: &[u8]) -> IResult<&[u8], Result<Command, Error>> {
let (input, _) = whitespace(input)?;
let (input, result) = alt((
|input| {
let (input, ()) = pwm_pid(input)?;
Ok((input, Ok(Command::PwmPid { channel })))
let (input, ()) = output_pid(input)?;
Ok((input, Ok(Command::OutputPid { channel })))
},
|input| {
let (input, polarity) = pwm_polarity(input)?;
Ok((input, Ok(Command::PwmPolarity { channel, polarity })))
let (input, polarity) = output_polarity(input)?;
Ok((input, Ok(Command::OutputPolarity { channel, polarity })))
},
|input| {
let (input, config) = pwm_setup(input)?;
match config {
Ok((pin, value)) =>
Ok((input, Ok(Command::Pwm { channel, pin, value }))),
Ok((input, Ok(Command::Output { channel, pin, value }))),
Err(e) =>
Ok((input, Err(e))),
}
@ -348,7 +348,7 @@ fn pwm(input: &[u8]) -> IResult<&[u8], Result<Command, Error>> {
end(input)?;
Ok((input, result))
},
value(Ok(Command::Show(ShowCommand::Pwm)), end)
value(Ok(Command::Show(ShowCommand::Output)), end)
))(input)
}
@ -593,7 +593,7 @@ fn command(input: &[u8]) -> IResult<&[u8], Result<Command, Error>> {
value(Ok(Command::Reset), tag("reset")),
ipv4,
map(report, Ok),
pwm,
output,
center_point,
pid,
steinhart_hart,
@ -685,9 +685,9 @@ mod test {
}
#[test]
fn parse_pwm_i_set() {
let command = Command::parse(b"pwm 1 i_set 16383");
assert_eq!(command, Ok(Command::Pwm {
fn parse_output_i_set() {
let command = Command::parse(b"output 1 i_set 16383");
assert_eq!(command, Ok(Command::Output {
channel: 1,
pin: PwmPin::ISet,
value: 16383.0,
@ -695,26 +695,26 @@ mod test {
}
#[test]
fn parse_pwm_polarity() {
fn parse_output_polarity() {
let command = Command::parse(b"pwm 0 polarity reversed");
assert_eq!(command, Ok(Command::PwmPolarity {
assert_eq!(command, Ok(Command::OutputPolarity {
channel: 0,
polarity: Polarity::Reversed,
}));
}
#[test]
fn parse_pwm_pid() {
let command = Command::parse(b"pwm 0 pid");
assert_eq!(command, Ok(Command::PwmPid {
fn parse_output_pid() {
let command = Command::parse(b"output 0 pid");
assert_eq!(command, Ok(Command::OutputPid {
channel: 0,
}));
}
#[test]
fn parse_pwm_max_i_pos() {
let command = Command::parse(b"pwm 0 max_i_pos 7");
assert_eq!(command, Ok(Command::Pwm {
fn parse_output_max_i_pos() {
let command = Command::parse(b"output 0 max_i_pos 7");
assert_eq!(command, Ok(Command::Output {
channel: 0,
pin: PwmPin::MaxIPos,
value: 7.0,
@ -722,9 +722,9 @@ mod test {
}
#[test]
fn parse_pwm_max_i_neg() {
let command = Command::parse(b"pwm 0 max_i_neg 128");
assert_eq!(command, Ok(Command::Pwm {
fn parse_output_max_i_neg() {
let command = Command::parse(b"output 0 max_i_neg 128");
assert_eq!(command, Ok(Command::Output {
channel: 0,
pin: PwmPin::MaxINeg,
value: 128.0,
@ -732,9 +732,9 @@ mod test {
}
#[test]
fn parse_pwm_max_v() {
let command = Command::parse(b"pwm 0 max_v 32768");
assert_eq!(command, Ok(Command::Pwm {
fn parse_output_max_v() {
let command = Command::parse(b"output 0 max_v 32768");
assert_eq!(command, Ok(Command::Output {
channel: 0,
pin: PwmPin::MaxV,
value: 32768.0,