USER MANUAL
STM 550X / EMSIX
–
ENOCEAN MULTI-SENSOR
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STM 550x / EMSIx User Manual | v1.0 | February 2020 | Page 60/79
8.5.15
LIGHT_SENSOR_CFG
STM 550x allows the user to select if the reported light level is the one measured by the
ambient light sensor or the one measured by the solar cell. Refer to chapter 3.1 for a de-
scription of the ambient light sensor and to chapter 3.2 for a description of the solar cell
functionality.
The selection between these two option is made using the LIGHT_SENSOR_CFG register
shown in Figure 41 below.
LIGHT_SENSOR_CFG (Default: 0x00)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
RFU
INPUT SELECTION
Figure 41
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LIGHT_SENSOR_CFG register
The encoding used by the INPUT SELECTION bit field is shown in Table 25 below.
INPUT SELECTION
Input value used for illumination reporting
0b0 (Default)
Ambient light sensor
0b1
Solar cell
Table 25
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INPUT SELECTION bit field encoding
