vl53l1x: Check data ready and clear interrupt in read().

[nedseb]

Sub-issue of #44.

Problem

read() reads the result registers (0x0089, 17 bytes) directly without:

1. Checking if ranging is active
2. Polling the data ready flag before reading
3. Clearing the interrupt after reading

If the user calls reset() then read(), stale/invalid data is returned. In continuous mode, not clearing the interrupt means subsequent reads may return the same stale result.

Solution

• Add start_ranging(): write 0x40 to SYSTEM__MODE_START (0x0087)
• Add stop_ranging(): write 0x00 to SYSTEM__MODE_START (0x0087)
• Add _is_data_ready(): read GPIO__TIO_HV_STATUS (0x0031) bit 0, compare with interrupt polarity
• Add _clear_interrupt(): write 0x01 to SYSTEM__INTERRUPT_CLEAR (0x0086)
• Add _ensure_data(): if ranging not active, start it; poll data ready
• Update read() to poll data ready and clear interrupt after reading
• Add necessary register constants to const.py or inline in device.py

Reference

• ST VL53L1X ULD API: VL53L1X_CheckForDataReady(), VL53L1X_ClearInterrupt()
• WSEN-PADS _ensure_data() pattern (PR wsen-pads: Add pressure sensor driver. #3)

[semantic-release-updater]

🎉 This issue has been resolved in version 0.0.2 🎉

The release is available on GitHub release

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