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boards: lpcxpresso55s36: Enable LPADC

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Enable LPADC on lpcxpresso55s36 board
Support lpcxpresso55s36 on ADC driver sample

Signed-off-by: David Leach <david.leach@nxp.com>
This commit is contained in:
David Leach 2023-04-12 16:16:01 +00:00 • committed by Carles Cufí
commit 095db2ee27
4 changed files with 50 additions and 1 deletions
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8
boards/arm/lpcxpresso55s36/lpcxpresso55s36-pinctrl.dtsi
View file

@ -39,6 +39,14 @@
};
};
pinmux_lpadc0: pinmux_lpadc0 {
group0 {
pinmux = <ADC0_CH0A_PIO1_9>;
slew-rate = "standard";
nxp,analog-mode;
};
};
/* Configures pin routing and optionally pin electrical features. */
pinmux_sctimer_default: pinmux_sctimer_default {
group0 {

6
boards/arm/lpcxpresso55s36/lpcxpresso55s36.dts
View file

@ -134,6 +134,12 @@
};
};
&adc0 {
status = "okay";
pinctrl-0 = <&pinmux_lpadc0>;
pinctrl-names = "default";
};
&flash0 {
partitions {
compatible = "fixed-partitions";

35
samples/drivers/adc/boards/lpcxpresso55s36.overlay Normal file
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@ -0,0 +1,35 @@
/*
* SPDX-License-Identifier: Apache-2.0
*
* Copyright 2023 NXP
*/
#include <zephyr/dt-bindings/adc/adc.h>
#include <zephyr/dt-bindings/adc/mcux-lpadc.h>
/ {
zephyr,user {
/* adjust channel number according to pinmux in board.dts */
io-channels = <&adc0 0>;
};
};
&adc0 {
#address-cells = <1>;
#size-cells = <0>;
/*
* This sample requires PIO1_9 found on J7 pin 1 as the ADC0 channel 3 input
* be connected to various voltages to observe the change in reading.
*/
channel@0 {
reg = <0>;
zephyr,gain = "ADC_GAIN_1";
zephyr,reference = "ADC_REF_EXTERNAL0";
zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
zephyr,vref-mv = <3300>;
zephyr,resolution = <12>;
zephyr,input-positive = <MCUX_LPADC_CH0A>;
};
};

2
samples/drivers/adc/sample.yaml
View file

@ -7,7 +7,7 @@ tests:
platform_allow: nucleo_l073rz disco_l475_iot1 cc3220sf_launchxl cc3235sf_launchxl
stm32l496g_disco stm32h735g_disco nrf51dk_nrf51422 nrf52840dk_nrf52840
mec172xevb_assy6906 gd32f350r_eval gd32f450i_eval gd32vf103v_eval gd32f403z_eval
esp32 esp32s2_saola esp32c3_devkitm gd32l233r_eval
esp32 esp32s2_saola esp32c3_devkitm gd32l233r_eval lpcxpresso55s36
integration_platforms:
- nucleo_l073rz
- nrf52840dk_nrf52840