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samples: sensor/mcux_acmp: Support ACMP case on mimxrt700_evk

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1. Supported ACMP case on mimxrt700_evk
2. Fixed the issue of using the same address for
different trigger sources. This bug would cause the
examples to run in a way that did not match the theory.
3. Removed some redundant descriptions in the README.rst.

Signed-off-by: Zhaoxiang Jin <Zhaoxiang.Jin_1@nxp.com>
This commit is contained in:
Zhaoxiang Jin 2025-06-13 17:42:31 +08:00 committed by Fabio Baltieri
parent 4ebbdd5151
commit dfd2240bd4
3 changed files with 40 additions and 13 deletions
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31
samples/sensor/mcux_acmp/README.rst
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@ -9,17 +9,11 @@ Overview
This sample show how to use the NXP MCUX Analog Comparator (ACMP) driver. The
sample supports the :zephyr:board:`twr_ke18f`, :zephyr:board:`mimxrt1170_evk`, :zephyr:board:`frdm_ke17z`
, :zephyr:board:`frdm_ke17z512` and :zephyr:board:`mimxrt1180_evk`.
, :zephyr:board:`frdm_ke17z512`, :zephyr:board:`mimxrt1180_evk` and :zephyr:board:`mimxrt700_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
:zephyr:board:`twr_ke18f` board, for :zephyr:board:`mimxrt1170_evk` the voltage signal is
captured on J25-13, the :zephyr:board:`frdm_ke17z` and :zephyr:board:`frdm_ke17z512` boards are
captured in J2-3, the :zephyr:board:`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.
provided by the ACMP Digital-to-Analog Converter (DAC). The output value
of the analog comparator is reported on the console.
Building and Running
********************
@ -84,3 +78,22 @@ ACMP input voltage by changing the voltage input to J45-13.
:board: mimxrt1180_evk/mimxrt1189/cm7
:goals: flash
:compact:
Building and Running for MIMXRT700-EVK
=======================================
Build the application for the MIMXRT700-EVK board, and adjust the
ACMP input voltage by changing the voltage input to J7-9.
Note:
.. zephyr-app-commands::
:zephyr-app: samples/sensor/mcux_acmp
:board: mimxrt700_evk/mimxrt798s/cm33_cpu0
:goals: flash
:compact:
.. zephyr-app-commands::
:zephyr-app: samples/sensor/mcux_acmp
:board: mimxrt700_evk/mimxrt798s/cm33_cpu1
:goals: flash
:compact:

2
samples/sensor/mcux_acmp/sample.yaml
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@ -10,6 +10,8 @@ common:
- mimxrt1170_evk/mimxrt1176/cm4
- mimxrt1180_evk/mimxrt1189/cm33
- mimxrt1180_evk/mimxrt1189/cm7
- mimxrt700_evk/mimxrt798s/cm33_cpu0
- mimxrt700_evk/mimxrt798s/cm33_cpu1
integration_platforms:
- twr_ke18f
tags:

20
samples/sensor/mcux_acmp/src/main.c
View File

@ -27,6 +27,11 @@
#define ACMP_POSITIVE 4
#define ACMP_NEGATIVE 4
#define ACMP_DAC_VREF 0
#elif (defined(CONFIG_BOARD_MIMXRT700_EVK))
#define ACMP_NODE DT_NODELABEL(acmp)
#define ACMP_POSITIVE 1
#define ACMP_NEGATIVE 7
#define ACMP_DAC_VREF 1
#else
#error Unsupported board
#endif
@ -97,7 +102,16 @@ static void acmp_trigger_handler(const struct device *dev,
int main(void)
{
struct sensor_trigger trigger;
struct sensor_trigger trigger[ARRAY_SIZE(triggers)] = {
[0] = {
.chan = SENSOR_CHAN_MCUX_ACMP_OUTPUT,
.type = triggers[0],
},
[1] = {
.chan = SENSOR_CHAN_MCUX_ACMP_OUTPUT,
.type = triggers[1],
}};
const struct device *const acmp = DEVICE_DT_GET(ACMP_NODE);
struct sensor_value val;
int err;
@ -124,10 +138,8 @@ int main(void)
k_sleep(K_MSEC(1));
/* Set ACMP triggers */
trigger.chan = SENSOR_CHAN_MCUX_ACMP_OUTPUT;
for (i = 0; i < ARRAY_SIZE(triggers); i++) {
trigger.type = triggers[i];
err = sensor_trigger_set(acmp, &trigger, acmp_trigger_handler);
err = sensor_trigger_set(acmp, &trigger[i], acmp_trigger_handler);
if (err) {
printf("failed to set trigger %d (err %d)", i, err);
return 0;