mirror of
https://github.com/openglow-org/forgefirm.git
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ScottW514
cd8a01a3d9
The remaining bench diagnostics run from forgetest's #bench tab. The tools that also run from a LAN host share scripts/bench/gfbench.py: GF_HOST names a remote machine (host mode, sysfs through ssh, Grbl and forgectrl over the LAN); unset, the tool runs on the board itself (local mode, sysfs directly, everything on 127.0.0.1), which is how the page runs them - with GF_HOST=127.0.0.1, the panel token in GF_TOKEN and their data files under <data>/bench/ (FORGETEST_BENCH_DATA). The helper also reads a machine setting from forgectrl, or from the settings file on the board while forgectrl is stopped. Ported: pwm_sweep / pwm_hold (scope = a takeover; the latch relocked, the write refused if FIRE or LASER_ON reads active), pwm_stream_test (PASS/FAIL exit), flow_characterize, flow_recheck_char, flow_warm_validate and flow_matrix (takeovers: forgectrl owns the thermal hardware, so the page's takeover replaces the tools' own controller stop/restart, whose command line predated the supervisor; results and logs in the bench data directory), flow_sustained, fan_test, temp_calibrate (dry; watch bounded in seconds; the threshold and the coolant conversion from the shared code), flow_escalate_drill (cool_confirm_max_s shortened through forgectrl's settings for the drill and restored; the setting's minimum is the default budget), and live_fire_drills (<drill> [S] [F], all six drills, host from GF_HOST, token from the board). flow_matrix joins the registry. What stays unported cannot run against the machine at all: the two null-sink CI harnesses and the .puls decoder. Runner: a scope tool runs inside the takeover wrapper; the bench environment above is passed to every tool. Tests: test_bench_registry (registry <-> scripts/bench consistency, every ported tool builds its command line, every script compiles, gfbench host/local modes) and the server test (scope tool takeover, the environment reaching the tool). Local mode smoke-run on the bench (temp_calibrate watch, setting, token) from /tmp, removed after. No catalog consequence: bench tools are not image components (dev-only forgetest); the acceptance catalog is unchanged.
103 lines
3.5 KiB
Python
103 lines
3.5 KiB
Python
#!/usr/bin/env python3
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"""LASER_PWM scope test - runs ON the board.
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check: read-only - safety-chain readbacks + PWM2 register dump.
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sweep: step the PWM duty register through known values with pauses so
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the scope can capture each, then restore the original sample.
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The duty register (PWMSAR) is the laser power SETPOINT only. No motion
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subsystem is touched (steppers are disabled before this runs), no
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stream runs, the laser latch is locked, FIRE is never asserted.
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Locked state only: run with the controller and forgectrl stopped (the
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bench page's takeover), the pulse device closed. The latch is relocked
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here as well, and the sweep refuses to write if the FIRE line reads
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driven or LASER_ON reads active. Usage: pwm_sweep.py [check|sweep]
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"""
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import mmap, struct, sys, time
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PWM2_BASE = 0x02084000
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PERCLK_HZ = 66_000_000
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SAR_OFF = 0x0C
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def rd(name):
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try:
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with open('/sys/glowforge/' + name) as f:
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return f.read().strip()
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except OSError as e:
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return '<%s>' % e
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def dump_regs(m):
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cr, sr, ir, sar, pr = struct.unpack('<5I', m[:20])
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divider = ((cr >> 4) & 0xFFF) + 1
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counts = pr + 2
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freq = PERCLK_HZ / (divider * counts) if counts else 0
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print('PWMCR=0x%08x PWMSAR=%d PWMPR=%d enabled=%s divider=%d counts=%d carrier=%.2f kHz'
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% (cr, sar, pr, bool(cr & 1), divider, counts, freq / 1000))
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return sar, pr
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def wr(name, val):
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with open('/sys/glowforge/' + name, 'w') as f:
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f.write(str(val))
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def locked_state():
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"""The latch commanded locked, FIRE not driven, no emission."""
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try:
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wr('cnc/laser_latch', 1)
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except OSError as e:
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print('!! could not lock the laser latch: %s' % e)
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return False
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time.sleep(0.2)
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en, on = rd('cnc/laser_enable'), rd('cnc/laser_on')
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if en != '0' or on != '0':
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print('!! not the locked state: laser_enable=%s laser_on=%s' % (en, on))
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return False
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return True
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def safety_readback():
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print('cnc/state =', rd('cnc/state'))
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print('cnc/laser_on =', rd('cnc/laser_on'))
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print('cnc/laser_enable =', rd('cnc/laser_enable'))
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print('cnc/laser_pgood =', rd('cnc/laser_pgood'))
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print('cnc/interlock_circuit =', rd('cnc/interlock_circuit'),
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'(b0 LASER_ON b1 LASER_ENABLE b2 BUTTON_LATCH b3 LASER_LATCH b4 ILK_RESET)')
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print('cnc/laser_on_sampled =', rd('cnc/laser_on_sampled'))
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mode = sys.argv[1] if len(sys.argv) > 1 else 'check'
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with open('/dev/mem', 'r+b') as f:
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m = mmap.mmap(f.fileno(), 4096, mmap.MAP_SHARED,
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mmap.PROT_READ | mmap.PROT_WRITE, offset=PWM2_BASE)
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print('--- safety readback (before)')
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safety_readback()
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print('--- PWM2 registers')
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sar0, pr = dump_regs(m)
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if mode == 'sweep':
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if not locked_state():
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m.close()
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sys.exit(2)
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period = pr + 2
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steps = [(64, '50%'), (32, '25%'), (96, '75%'), (8, '6%'), (127, '100%')]
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print('--- duty sweep: 4 s per step, watch the scope')
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for sar, label in steps:
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m[SAR_OFF:SAR_OFF + 4] = struct.pack('<I', sar)
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time.sleep(0.1)
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cur = struct.unpack('<I', m[SAR_OFF:SAR_OFF + 4])[0]
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print(' PWMSAR=%-3d (%s of %d counts) readback=%d' % (sar, label, period, cur))
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time.sleep(4)
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m[SAR_OFF:SAR_OFF + 4] = struct.pack('<I', sar0)
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print('--- restored PWMSAR=%d' % sar0)
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print('--- safety readback (after)')
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safety_readback()
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dump_regs(m)
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m.close()
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