ST VL6180X - Single-Shot Range Measurement; Continuous Range Measurement Mode

DocID026571 Rev 1 7/27
AN4545 Performing range measurements
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2.1 Performing a range measurement in single-shot mode
1. Check device is ready to start a range measurement. (Optional)
a) Check bit 0 of RESULT__RANGE_STATUS {0x4d} is set.
2. Start a range measurement.
a) Write 0x01 to SYSRANGE__START {0x18}.
3. Wait for range measurement to complete.
a) Poll RESULT__INTERRUPT_STATUS_GPIO {0x4f} register till bit 2 is set to 1.
(New Sample Ready threshold event).
4. Reading range result.
a) Read RESULT__RANGE_VAL {0x62}.
b) This is the range measurement between the VL6180X and target in mm
5. Clear the Interrupt status.
a) Write 0x07 to SYSTEM__INTERRUPT_CLEAR {0x15}.
6. Repeat the previous steps 1 to 4 for more range measurements.
2.2 Performing a range measurement in continuous mode
1. Check device is ready to start range measurement. (Optional)
2. Check bit 0 of RESULT__RANGE_STATUS {0x4d} is set.
3. Start range measurements.
a) Write 0x03 to SYSRANGE__START {0x18}.
4. Wait for range measurement to complete.
a) Poll RESULT__INTERRUPT_STATUS_GPIO {0x4f} register till bit 2 is set to 1.
(New Sample Ready threshold event).
5. Reading range result.
a) Read RESULT__RANGE_VAL {0x62}.
b) This is the range measurement between the VL6180X and target in mm.
6. Clear the Interrupt status.
a) Write 0x07 to SYSTEM__INTERRUPT_CLEAR {0x15}.
7. Repeat the steps 2 to 4 for more range measurements.
8. Stop range measurements.
a) Write 0x01 to SYSRANGE__START {0x18}.