forked from M-Labs/thermostat
pytec: more methods, doc
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@ -34,6 +34,7 @@ series = {
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'i_set': Series(),
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'i_set': Series(),
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'pid_output': Series(),
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'pid_output': Series(),
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'vref': Series(),
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'vref': Series(),
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'dac_value': Series(),
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'dac_feedback': Series(),
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'dac_feedback': Series(),
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'i_tec': Series(),
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'i_tec': Series(),
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'tec_i': Series(),
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'tec_i': Series(),
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@ -34,24 +34,92 @@ class Client:
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return result
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return result
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def get_pwm(self):
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def get_pwm(self):
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"""Retrieve PWM limits for the TEC
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Example::
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[{'channel': 0,
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'center': 'vref',
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'i_set': {'max': 2.9802790335151985, 'value': -0.02002179650216762},
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'max_i_neg': {'max': 3.0, 'value': 3.0},
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'max_v': {'max': 5.988, 'value': 5.988},
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'max_i_pos': {'max': 3.0, 'value': 3.0}},
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{'channel': 1,
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'center': 'vref',
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'i_set': {'max': 2.9802790335151985, 'value': -0.02002179650216762},
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'max_i_neg': {'max': 3.0, 'value': 3.0},
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'max_v': {'max': 5.988, 'value': 5.988},
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'max_i_pos': {'max': 3.0, 'value': 3.0}}
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]
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"""
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return self._get_conf("pwm")
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return self._get_conf("pwm")
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def get_pid(self):
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def get_pid(self):
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"""Retrieve PID control state
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Example::
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[{'channel': 0,
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'parameters': {
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'kp': 10.0,
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'ki': 0.02,
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'kd': 0.0,
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'output_min': 0.0,
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'output_max': 3.0,
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'integral_min': -100.0,
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'integral_max': 100.0},
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'target': 37.0,
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'integral': 38.41138597026372},
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{'channel': 1,
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'parameters': {
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'kp': 10.0,
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'ki': 0.02,
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'kd': 0.0,
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'output_min': 0.0,
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'output_max': 3.0,
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'integral_min': -100.0,
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'integral_max': 100.0},
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'target': 36.5,
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'integral': nan}]
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"""
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return self._get_conf("pid")
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return self._get_conf("pid")
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def get_steinhart_hart(self):
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def get_steinhart_hart(self):
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"""Retrieve Steinhart-Hart parameters for resistance to temperature conversion
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Example::
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[{'params': {'b': 3800.0, 'r0': 10000.0, 't0': 298.15}, 'channel': 0},
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{'params': {'b': 3800.0, 'r0': 10000.0, 't0': 298.15}, 'channel': 1}]
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"""
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return self._get_conf("s-h")
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return self._get_conf("s-h")
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def get_postfilter(self):
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def get_postfilter(self):
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"""Retrieve DAC postfilter configuration
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Example::
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[{'rate': None, 'channel': 0},
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{'rate': 21.25, 'channel': 1}]
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"""
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return self._get_conf("postfilter")
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return self._get_conf("postfilter")
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def report_mode(self):
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def report_mode(self):
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"""Start reporting measurement values
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"""Start reporting measurement values
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Example of yielded data::
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{'channel': 0,
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'time': 2302524,
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'adc': 0.6199188965423515,
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'sens': 6138.519310282602,
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'temperature': 36.87032392655527,
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'pid_engaged': True,
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'i_set': 2.0635816680889123,
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'vref': 1.494,
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'dac_value': 2.527790834044456,
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'dac_feedback': 2.523,
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'i_tec': 2.331,
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'tec_i': 2.0925,
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'tec_u_meas': 2.5340000000000003,
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'pid_output': 2.067581958092247}
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"""
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"""
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self._command("report mode", "on")
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self._command("report mode", "on")
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self._read_line()
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while True:
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while True:
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line = self._read_line()
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line = self._read_line()
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@ -69,9 +137,16 @@ class Client:
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value = str(value)
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value = str(value)
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self._command(topic, str(channel), field, value)
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self._command(topic, str(channel), field, value)
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# read response line
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self._read_line()
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def power_up(self, channel, target):
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def power_up(self, channel, target):
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"""Start closed-loop mode"""
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self.set_param("pid", channel, "target", value=target)
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self.set_param("pid", channel, "target", value=target)
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self.set_param("pwm", channel, "pid")
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self.set_param("pwm", channel, "pid")
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def save_config(self):
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"""Save current configuration to EEPROM"""
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self._command("save")
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def load_config(self):
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"""Load current configuration from EEPROM"""
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self._command("load")
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@ -1,6 +1,8 @@
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from pytec.client import Client
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from pytec.client import Client
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tec = Client() #(host="localhost", port=6667)
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tec = Client() #(host="localhost", port=6667)
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tec.set_param("s-h", 0, "t", 20)
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tec.set_param("s-h", 1, "t0", 20)
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print(tec.get_pid())
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print(tec.get_steinhart_hart())
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for data in tec.report_mode():
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for data in tec.report_mode():
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print(data)
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print(data)
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