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pytec: more methods, doc

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Astro 2020-10-01 00:21:43 +02:00
parent 438da74721
commit 1b4a030e7e
3 changed files with 84 additions and 6 deletions
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1
pytec/plot.py
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@ -34,6 +34,7 @@ series = {
'i_set': Series(),
'pid_output': Series(),
'vref': Series(),
'dac_value': Series(),
'dac_feedback': Series(),
'i_tec': Series(),
'tec_i': Series(),

85
pytec/pytec/client.py
View File

@ -34,24 +34,92 @@ class Client:
return result
def get_pwm(self):
"""Retrieve PWM limits for the TEC
Example::
[{'channel': 0,
'center': 'vref',
'i_set': {'max': 2.9802790335151985, 'value': -0.02002179650216762},
'max_i_neg': {'max': 3.0, 'value': 3.0},
'max_v': {'max': 5.988, 'value': 5.988},
'max_i_pos': {'max': 3.0, 'value': 3.0}},
{'channel': 1,
'center': 'vref',
'i_set': {'max': 2.9802790335151985, 'value': -0.02002179650216762},
'max_i_neg': {'max': 3.0, 'value': 3.0},
'max_v': {'max': 5.988, 'value': 5.988},
'max_i_pos': {'max': 3.0, 'value': 3.0}}
]
"""
return self._get_conf("pwm")
def get_pid(self):
"""Retrieve PID control state
Example::
[{'channel': 0,
'parameters': {
'kp': 10.0,
'ki': 0.02,
'kd': 0.0,
'output_min': 0.0,
'output_max': 3.0,
'integral_min': -100.0,
'integral_max': 100.0},
'target': 37.0,
'integral': 38.41138597026372},
{'channel': 1,
'parameters': {
'kp': 10.0,
'ki': 0.02,
'kd': 0.0,
'output_min': 0.0,
'output_max': 3.0,
'integral_min': -100.0,
'integral_max': 100.0},
'target': 36.5,
'integral': nan}]
"""
return self._get_conf("pid")
def get_steinhart_hart(self):
"""Retrieve Steinhart-Hart parameters for resistance to temperature conversion
Example::
[{'params': {'b': 3800.0, 'r0': 10000.0, 't0': 298.15}, 'channel': 0},
{'params': {'b': 3800.0, 'r0': 10000.0, 't0': 298.15}, 'channel': 1}]
"""
return self._get_conf("s-h")
def get_postfilter(self):
"""Retrieve DAC postfilter configuration
Example::
[{'rate': None, 'channel': 0},
{'rate': 21.25, 'channel': 1}]
"""
return self._get_conf("postfilter")
def report_mode(self):
"""Start reporting measurement values
Example of yielded data::
{'channel': 0,
'time': 2302524,
'adc': 0.6199188965423515,
'sens': 6138.519310282602,
'temperature': 36.87032392655527,
'pid_engaged': True,
'i_set': 2.0635816680889123,
'vref': 1.494,
'dac_value': 2.527790834044456,
'dac_feedback': 2.523,
'i_tec': 2.331,
'tec_i': 2.0925,
'tec_u_meas': 2.5340000000000003,
'pid_output': 2.067581958092247}
"""
self._command("report mode", "on")
self._read_line()
while True:
line = self._read_line()
@ -69,9 +137,16 @@ class Client:
value = str(value)
self._command(topic, str(channel), field, value)
# read response line
self._read_line()
def power_up(self, channel, target):
"""Start closed-loop mode"""
self.set_param("pid", channel, "target", value=target)
self.set_param("pwm", channel, "pid")
def save_config(self):
"""Save current configuration to EEPROM"""
self._command("save")
def load_config(self):
"""Load current configuration from EEPROM"""
self._command("load")

4
pytec/test.py
View File

@ -1,6 +1,8 @@
from pytec.client import Client
tec = Client() #(host="localhost", port=6667)
tec.set_param("s-h", 0, "t", 20)
tec.set_param("s-h", 1, "t0", 20)
print(tec.get_pid())
print(tec.get_steinhart_hart())
for data in tec.report_mode():
print(data)