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boards: Add analog comparator support on MIMXRT1170 EVK

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Updated mcux_acmp sample to support discrete mode config.
Add ACMP support on MIMXRT1170 EVK.

Signed-off-by: Chay Guo <changyi.guo@nxp.com>
This commit is contained in:
Chay Guo 2022-05-13 16:17:48 +08:00 committed by Carles Cufí
parent 08641f0616
commit 191f93c325
9 changed files with 128 additions and 3 deletions
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2
boards/arm/mimxrt1170_evk/doc/index.rst
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@ -127,6 +127,8 @@ features:
+-----------+------------+-------------------------------------+
| DISPLAY | on-chip | display |
+-----------+------------+-------------------------------------+
| ACMP | on-chip | analog comparator |
+-----------+------------+-------------------------------------+
The default configuration can be found in the defconfig file:
``boards/arm/mimxrt1170_evk/mimxrt1170_evk_cm7_defconfig``

36
dts/arm/nxp/nxp_rt11xx.dtsi
View file

@ -916,6 +916,42 @@
#io-channel-cells = <1>;
};
acmp1: cmp@401a4000 {
compatible = "nxp,kinetis-acmp";
reg = <0x401a4000 0x4000>;
interrupts = <157 0>;
label = "CMP_1";
status = "disabled";
#io-channel-cells = <2>;
};
acmp2: cmp@401a8000 {
compatible = "nxp,kinetis-acmp";
reg = <0x401a8000 0x4000>;
interrupts = <158 0>;
label = "CMP_2";
status = "disabled";
#io-channel-cells = <2>;
};
acmp3: cmp@401ac000 {
compatible = "nxp,kinetis-acmp";
reg = <0x401ac000 0x4000>;
interrupts = <159 0>;
label = "CMP_3";
status = "disabled";
#io-channel-cells = <2>;
};
acmp4: cmp@401b0000 {
compatible = "nxp,kinetis-acmp";
reg = <0x401b0000 0x4000>;
interrupts = <160 0>;
label = "CMP_4";
status = "disabled";
#io-channel-cells = <2>;
};
anatop: anatop@40c84000 {
compatible = "nxp,imx-anatop";
reg = <0x40c84000 0x4000>;

20
samples/sensor/mcux_acmp/README.rst
View file

@ -7,17 +7,22 @@ Overview
********
This sample show how to use the NXP MCUX Analog Comparator (ACMP) driver. The
sample supports the :ref:`twr_ke18f`.
sample supports the :ref:`twr_ke18f`, :ref:`mimxrt1170_evk`.
The input voltage for the 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.
the positive input can be adjusted by turning the on-board potentiometer for
:ref:`twr_ke18f` board, for :ref:`mimxrt1170_evk` the voltage signal is
captured on J25-13, 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 :ref:`twr_ke18f` board, and adjust the
ACMP input voltage by turning the on-board potentiometer.
@ -26,3 +31,14 @@ ACMP input voltage by turning the on-board potentiometer.
:board: twr_ke18f
:goals: flash
:compact:
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.
.. zephyr-app-commands::
:zephyr-app: samples/drivers/mcux_acmp
:board: mimxrt1170_evk_cm7
:goals: flash
:compact:

22
samples/sensor/mcux_acmp/boards/mimxrt1170_evk_cm4.overlay Normal file
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@ -0,0 +1,22 @@
/*
* Copyright 2022 NXP
*
* SPDX-License-Identifier: Apache-2.0
*/
&pinctrl {
acmp1_default: acmp1_default {
group0 {
pinmux = <&iomuxc_gpio_ad_01_acmp1_in2>;
drive-strength = "high";
bias-pull-up;
slew-rate = "fast";
};
};
};
&acmp1 {
status = "okay";
pinctrl-0 = <&acmp1_default>;
pinctrl-names = "default";
};

22
samples/sensor/mcux_acmp/boards/mimxrt1170_evk_cm7.overlay Normal file
View file

@ -0,0 +1,22 @@
/*
* Copyright 2022 NXP
*
* SPDX-License-Identifier: Apache-2.0
*/
&pinctrl {
acmp1_default: acmp1_default {
group0 {
pinmux = <&iomuxc_gpio_ad_01_acmp1_in2>;
drive-strength = "high";
bias-pull-up;
slew-rate = "fast";
};
};
};
&acmp1 {
status = "okay";
pinctrl-0 = <&acmp1_default>;
pinctrl-names = "default";
};

2
samples/sensor/mcux_acmp/sample.yaml
View file

@ -2,7 +2,7 @@ sample:
description: Demonstration of the NXP MCUX ACMP sensor driver
name: NXP MCUX ACMP sample
common:
platform_allow: twr_ke18f
platform_allow: twr_ke18f mimxrt1170_evk_cm7 mimxrt1170_evk_cm4
integration_platforms:
- twr_ke18f
tags: drivers

16
samples/sensor/mcux_acmp/src/main.c
View file

@ -16,6 +16,12 @@
#define ACMP_POSITIVE 5
#define ACMP_NEGATIVE 5
#define ACMP_DAC_VREF 0
#elif (defined(CONFIG_BOARD_MIMXRT1170_EVK_CM7) || defined(CONFIG_BOARD_MIMXRT1170_EVK_CM4))
#define ACMP_NODE DT_NODELABEL(acmp1)
#define ACMP_POSITIVE 2
#define ACMP_NEGATIVE 7
/* Select Vin2. Vin1 is not used and tied to ground on this chip. Vin2 is from VDDA_1P8_IN. */
#define ACMP_DAC_VREF 1
#else
#error Unsupported board
#endif
@ -28,13 +34,17 @@ struct acmp_attr {
};
static const struct acmp_attr attrs[] = {
#if MCUX_ACMP_HAS_INPSEL
/* Positive input port set to MUX */
{ .attr = SENSOR_ATTR_MCUX_ACMP_POSITIVE_PORT_INPUT, .val = 1 },
#endif
/* Positive input channel */
{ .attr = SENSOR_ATTR_MCUX_ACMP_POSITIVE_MUX_INPUT,
.val = ACMP_POSITIVE },
#if MCUX_ACMP_HAS_INNSEL
/* Negative input port set to DAC */
{ .attr = SENSOR_ATTR_MCUX_ACMP_NEGATIVE_PORT_INPUT, .val = 0 },
#endif
/* Negative input channel */
{ .attr = SENSOR_ATTR_MCUX_ACMP_NEGATIVE_MUX_INPUT,
.val = ACMP_NEGATIVE },
@ -45,8 +55,14 @@ static const struct acmp_attr attrs[] = {
{ .attr = SENSOR_ATTR_MCUX_ACMP_DAC_VALUE, .val = ACMP_DAC_VALUE },
/* Hysteresis level */
{ .attr = SENSOR_ATTR_MCUX_ACMP_HYSTERESIS_LEVEL, .val = 3 },
#if MCUX_ACMP_HAS_DISCRETE_MODE
/* Discrete mode */
{ .attr = SENSOR_ATTR_MCUX_ACMP_POSITIVE_DISCRETE_MODE, .val = 1 },
#endif
#if MCUX_ACMP_HAS_OFFSET
/* Offset level */
{ .attr = SENSOR_ATTR_MCUX_ACMP_OFFSET_LEVEL, .val = 0 },
#endif
};
static const int16_t triggers[] = {

2
soc/arm/nxp_imx/rt/Kconfig.soc
View file

@ -318,6 +318,7 @@ config SOC_MIMXRT1176_CM7
select HAS_MCUX_GPC
select HAS_MCUX_I2S
select HAS_MCUX_USB_EHCI
select HAS_MCUX_ACMP
select HAS_MCUX_SRC_V2
select HAS_MCUX_IOMUXC
@ -346,6 +347,7 @@ config SOC_MIMXRT1176_CM4
select HAS_MCUX_ENET
select HAS_MCUX_GPC
select HAS_MCUX_I2S
select HAS_MCUX_ACMP
select HAS_MCUX_SRC_V2
select HAS_MCUX_IOMUXC

9
soc/arm/nxp_imx/rt/soc_rt11xx.c
View file

@ -406,6 +406,15 @@ static ALWAYS_INLINE void clock_init(void)
#endif
#endif
#ifdef CONFIG_MCUX_ACMP
#if DT_NODE_HAS_STATUS(DT_NODELABEL(acmp1), okay)
/* Configure ACMP1 using Osc48MDiv2*/
rootCfg.mux = kCLOCK_ACMP_ClockRoot_MuxOscRc48MDiv2;
rootCfg.div = 1;
CLOCK_SetRootClock(kCLOCK_Root_Acmp, &rootCfg);
#endif
#endif
#ifdef CONFIG_DISPLAY_MCUX_ELCDIF
rootCfg.mux = kCLOCK_LCDIF_ClockRoot_MuxSysPll2Out;
rootCfg.div = 9;