NXP MCUX Analog Comparator (ACMP)

Overview

This sample show how to use the NXP MCUX Analog Comparator (ACMP) driver. The sample supports the TWR-KE18F, MIMXRT1170-EVK/EVKB, FRDM-KE17Z , FRDM-KE17Z512 and MIMXRT1180-EVK.

The input voltage for the negative input of the analog comparator is provided by the ACMP Digital-to-Analog Converter (DAC). The input voltage for the positive input can be adjusted by turning the on-board potentiometer for TWR-KE18F board, for MIMXRT1170-EVK/EVKB the voltage signal is captured on J25-13, the FRDM-KE17Z and FRDM-KE17Z512 boards are captured in J2-3, the MIMXRT1180-EVK board are captured in J45-13, need change the external voltage signal to check the output.

The output value of the analog comparator is reported on the console.

Building and Running

Building and Running for TWR-KE18F

Build the application for the TWR-KE18F board, and adjust the ACMP input voltage by turning the on-board potentiometer.

west build -b twr_ke18f samples/sensor/mcux_acmp
west flash

Building and Running for MIMXRT1170-EVK

Build the application for the MIMXRT1170-EVK board, and adjust the ACMP input voltage by changing the voltage input to J25-13.

west build -b mimxrt1170_evk_cm7 samples/sensor/mcux_acmp
west flash

Building and Running for FRDM-KE17Z

Build the application for the FRDM-KE17Z board, and adjust the ACMP input voltage by changing the voltage input to J2-3.

west build -b frdm_ke17z samples/sensor/mcux_acmp
west flash

Building and Running for FRDM-KE17Z512

Build the application for the FRDM-KE17Z512 board, and adjust the ACMP input voltage by changing the voltage input to J2-3.

west build -b frdm_ke17z512 samples/sensor/mcux_acmp
west flash

Building and Running for MIMXRT1180-EVK

Build the application for the MIMXRT1180-EVK board, and adjust the ACMP input voltage by changing the voltage input to J45-13.

west build -b mimxrt1180_evk/mimxrt1189/cm33 samples/sensor/mcux_acmp
west flash

west build -b mimxrt1180_evk/mimxrt1189/cm7 samples/sensor/mcux_acmp
west flash