1.. zephyr:code-sample:: mcux_lpcmp
2   :name: NXP MCUX Low-power Analog Comparator (LPCMP)
3   :relevant-api: sensor_interface
4
5   Get analog comparator data from an NXP MCUX Low-power Analog Comparator (LPCMP).
6
7Overview
8********
9
10This sample show how to use the NXP MCUX Low-power Analog Comparator (LPCMP) driver.
11
12In this application, the negative input port of the LPCMP is set with
13:kconfig:option:`CONFIG_LPCMP_NEGATIVE_PORT` which means the input voltage comes
14from the LPCMP internal DAC. The reference voltage of the DAC is set to 0 (check
15the reference manual to confirm the voltage source for your specific chip). The
16output voltage of the DAC equals (VREF/256)*(data+1), where data is set through
17the attribute ``SENSOR_ATTR_MCUX_LPCMP_DAC_OUTPUT_VOLTAGE``. The positive input
18port is set with :kconfig:option:`CONFIG_LPCMP_POSITIVE_PORT`. Check the reference
19manual and board schematic to confirm which specific port is used. You can connect
20an external voltage to that port and change the input voltage to see the output
21change of the LPCMP.
22
23The output value of the LPCMP is reported on the console.
24
25Building and Running
26********************
27
28Building and Running for NXP FRDM-MCXN947
29=========================================
30Build the application for the :zephyr:board:`frdm_mcxn947` board, and adjust the
31LPCMP positive input port voltage by changing the voltage input to J2-17.
32
33.. zephyr-app-commands::
34   :zephyr-app: samples/sensor/mcux_lpcmp
35   :board: frdm_mcxn947//cpu0
36   :goals: build flash
37   :compact:
38
39Building and Running for NXP FRDM-MCXN236
40=========================================
41Build the application for the :zephyr:board:`frdm_mcxn236` board, and adjust the
42LPCMP positive input port voltage by changing the voltage input to J2-8.
43
44.. zephyr-app-commands::
45   :zephyr-app: samples/sensor/mcux_lpcmp
46   :board: frdm_mcxn236
47   :goals: build flash
48   :compact:
49
50Building and Running for NXP FRDM-MCXA156
51=========================================
52Build the application for the :zephyr:board:`frdm_mcxa156` board, and adjust the
53LPCMP positive input port voltage by changing the voltage input to J2-9.
54
55.. zephyr-app-commands::
56   :zephyr-app: samples/sensor/mcux_lpcmp
57   :board: frdm_mcxa156
58   :goals: build flash
59   :compact:
60
61Building and Running for NXP FRDM-MCXA153
62=========================================
63Build the application for the :zephyr:board:`frdm_mcxa153` board, and adjust the
64LPCMP positive input port voltage by changing the voltage input to J2-9.
65
66.. zephyr-app-commands::
67   :zephyr-app: samples/sensor/mcux_lpcmp
68   :board: frdm_mcxa153
69   :goals: build flash
70   :compact:
71
72Building and Running for NXP FRDM-MCXA346
73=========================================
74Build the application for the :zephyr:board:`frdm_mcxa346` board, and adjust the
75LPCMP positive input port voltage by changing the voltage input to J2-17.
76
77.. zephyr-app-commands::
78   :zephyr-app: samples/sensor/mcux_lpcmp
79   :board: frdm_mcxa346
80   :goals: build flash
81   :compact:
82
83Building and Running for NXP FRDM-MCXA266
84=========================================
85Build the application for the :zephyr:board:`frdm_mcxa266` board, and adjust the
86LPCMP positive input port voltage by changing the voltage input to J2-17.
87
88.. zephyr-app-commands::
89   :zephyr-app: samples/sensor/mcux_lpcmp
90   :board: frdm_mcxa266
91   :goals: build flash
92   :compact:
93