/*
 * Copyright (c) 2022 Nordic Semiconductor ASA
 *
 * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
 */

/*
 * nRF5340 DK (App Core) Overlay for ADS1256
 * 仅保留 SPI 和 GPIO 定义
 */

&spi1 {
    compatible = "nordic,nrf-spim";
    status = "okay";
    pinctrl-0 = <&spi1_default>;
    pinctrl-1 = <&spi1_sleep>;
    pinctrl-names = "default", "sleep";
    
    /* CS 引脚配置 */
    cs-gpios = <&gpio1 12 GPIO_ACTIVE_LOW>;

    ads1256: ads1256@0 {
        compatible = "ti,ads1256";
        reg = <0>;
        spi-max-frequency = <1000000>;
    };
};

&pinctrl {
    spi1_default: spi1_default {
        group1 {
            psels = <NRF_PSEL(SPIM_SCK, 1, 15)>,
                    <NRF_PSEL(SPIM_MOSI, 1, 13)>,
                    <NRF_PSEL(SPIM_MISO, 1, 14)>;
        };
    };
    spi1_sleep: spi1_sleep {
        group1 {
            psels = <NRF_PSEL(SPIM_SCK, 1, 15)>,
                    <NRF_PSEL(SPIM_MOSI, 1, 13)>,
                    <NRF_PSEL(SPIM_MISO, 1, 14)>;
            low-power-enable;
        };
    };
};

/ {
    aliases {
        ads-cs    = &ads_cs_pin;
        ads-drdy  = &ads_drdy_pin;
        ads-reset = &ads_reset_pin;
    };

    ads1256_control {
        compatible = "gpio-keys";
        ads_cs_pin: ads_cs {
            gpios = <&gpio1 12 GPIO_ACTIVE_LOW>;
        };
        ads_drdy_pin: ads_drdy {
            gpios = <&gpio1 11 GPIO_ACTIVE_LOW>;
        };
        ads_reset_pin: ads_reset {
            gpios = <&gpio1 10 GPIO_ACTIVE_LOW>;
        };
    };
};