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https://github.com/openglow-org/forgefirm.git
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ScottW514
e32c86fb10
The pin carries the calibrate tool's sampling fix (3 s at 8 Hz a side). aa_offset_check.py proves the correction on a machine: M8 brings the fans to the run profile, dark, while the raw coolant counts, /status and the engine's readings are averaged before, during and after; it turns the flow check off for its session and restores it. On the bench page as aa-offset-check. CAMPAIGN-LOG records the tool's first run, the applied value (16 counts) and the proof: the readings held within 0.1 C under the run profile where they dropped 1.0 C uncorrected. BRINGUP item 21 names what remains. No catalog consequence: a bench tool and records.
111 lines
4.3 KiB
Python
111 lines
4.3 KiB
Python
#!/usr/bin/env python3
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"""Does the coolant reading hold still when the run airflow comes on?
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With cool_aa_offset_counts at the machine's value the engine takes the
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air-assist fan's ground shift off both coolant readings, so /status and
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/cool/status should read the same coolant before and after M8 brings the
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fans to the run profile, while the raw counts step by the offset. With
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the setting at zero the readings drop by about a degree instead. Dark,
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no press: M8 opens a run session without a laser-on. Runs on the board
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(the bench directory on PYTHONPATH for the Grbl client).
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Usage: aa_offset_check.py [dwell_s]
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"""
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import json
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import sys
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import time
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import urllib.request
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from live_fire_drills import Grbl, HOST, PORT
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def raw():
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out = []
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for a in ('pic/water_temp_1', 'pic/water_temp_2'):
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with open('/sys/glowforge/' + a) as f:
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out.append(int(f.read().strip()))
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return out
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def status():
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with urllib.request.urlopen('http://127.0.0.1:8080/status', timeout=2) as r:
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s = json.load(r)
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with urllib.request.urlopen('http://127.0.0.1:8080/cool/status', timeout=2) as r:
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c = json.load(r)
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with urllib.request.urlopen('http://127.0.0.1:8080/settings', timeout=2) as r:
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st = json.load(r)
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return (s['coolant']['down_c'], s['coolant']['up_c'], c['down_c'], c['up_c'], c['phase'],
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st.get('cool_aa_offset_counts'))
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def mean_over(secs):
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rs, ss = [], []
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end = time.time() + secs
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while time.time() < end:
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rs.append(raw())
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ss.append(status()[:4])
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time.sleep(0.5)
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n = len(rs)
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return ([sum(x[i] for x in rs) / n for i in range(2)],
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[sum(x[i] for x in ss) / n for i in range(4)])
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def post_settings(**kv):
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"""POST /settings with the panel token; returns the reply dict."""
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import urllib.parse
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try:
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with open('/data/forgefirm/panel.token') as f:
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tok = f.read().strip()
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except OSError:
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tok = ''
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req = urllib.request.Request('http://127.0.0.1:8080/settings',
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data=urllib.parse.urlencode(kv).encode(),
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headers={'X-ForgeFIRM-Token': tok})
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with urllib.request.urlopen(req, timeout=4) as r:
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return json.load(r)
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def main():
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dwell = float(sys.argv[1]) if len(sys.argv) > 1 else 20.0
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g = Grbl(HOST, PORT)
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if 'Idle' not in g.status():
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print('REFUSED: controller not Idle')
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return 2
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setting = status()[5]
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print('cool_aa_offset_counts = %s' % setting)
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# A run session starts the flow check, whose heater warms the
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# downstream sensor inside this check's dwell: off for this session,
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# back afterward.
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with urllib.request.urlopen('http://127.0.0.1:8080/settings', timeout=2) as r:
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was = json.load(r).get('cool_flow_check_s')
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if was in (None, ''):
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was = '50' # unset reads as empty: the shipped default
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print('flow check off for this session (cool_flow_check_s was %s): %s'
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% (was, post_settings(cool_flow_check_s='0').get('cool_flow_check_s')))
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print('before M8: settling 8 s')
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r0, s0 = mean_over(8.0)
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print(' raw %.1f/%.1f /status %.2f/%.2f engine %.2f/%.2f' % (r0[0], r0[1], *s0))
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print('M8: %s' % g.cmd('M8'))
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time.sleep(6.0) # the fans to run duty, the offset in
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r1, s1 = mean_over(dwell)
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print(' raw %.1f/%.1f /status %.2f/%.2f engine %.2f/%.2f (phase %s)'
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% (r1[0], r1[1], *s1, status()[4]))
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print('M9: %s' % g.cmd('M9'))
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if was is not None:
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post_settings(cool_flow_check_s=str(was))
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else:
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post_settings(cool_flow_check_s='50')
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with urllib.request.urlopen('http://127.0.0.1:8080/settings', timeout=2) as r:
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print('flow check restored: cool_flow_check_s = %s' % json.load(r).get('cool_flow_check_s'))
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time.sleep(25.0) # the session closes, the fans idle
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r2, s2 = mean_over(8.0)
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print(' raw %.1f/%.1f /status %.2f/%.2f engine %.2f/%.2f' % (r2[0], r2[1], *s2))
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print('\nraw counts stepped %+.1f / %+.1f under the run profile; /status moved %+.2f / %+.2f C; '
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'the engine moved %+.2f / %+.2f C'
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% (r1[0] - r0[0], r1[1] - r0[1], s1[0] - s0[0], s1[1] - s0[1], s1[2] - s0[2], s1[3] - s0[3]))
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return 0
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if __name__ == '__main__':
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sys.exit(main())
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