nrf52840dk_nrf52840.overlay

// To get started, press Ctrl+Space to bring up the completion menu and view the available nodes.

// You can also use the buttons in the sidebar to perform actions on nodes.
// Actions currently available include:

// * Enabling / disabling the node
// * Adding the bus to a bus
// * Removing the node
// * Connecting ADC channels

// For more help, browse the DeviceTree documentation at https://docs.zephyrproject.org/latest/guides/dts/index.html
// You can also visit the nRF DeviceTree extension documentation at https://nrfconnect.github.io/vscode-nrf-connect/devicetree/nrfdevicetree.html

/ {
    ads1299ios {
        compatible = "gpio-keys";
        ads1299rst: ads1299_rst {
			gpios = <&gpio0 5 GPIO_ACTIVE_LOW>;
			label = "ADS1299 Reset Pin";
		};

        ads1299start: ads1299_start {
			gpios = <&gpio0 4 GPIO_ACTIVE_LOW>;
			label = "ADS1299 Start Pin";
		};

        ads1299pwdn: ads1299_pwdn {
			gpios = <&gpio1 10 GPIO_ACTIVE_LOW>;
			label = "ADS1299 Power-Down Pin";
		};

        // ads1299cs: ads1299_cs {
		// 	gpios = <&gpio0 8 GPIO_ACTIVE_LOW>;
		// 	label = "ADS1299 Chip-Select Pin";
		// };

        ads1299drdy: ads1299_drdy {
			gpios = <&gpio0 6 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
			label = "ADS1299 Data-Ready Pin";
		};
    };
};

&pinctrl {
	uart0_default: uart0_default {
		group1 {
			psels = <NRF_PSEL(UART_TX, 0, 24)>,
				<NRF_PSEL(UART_RTS, 0, 1)>;
		};
		group2 {
			psels = <NRF_PSEL(UART_RX, 0, 25)>,
				<NRF_PSEL(UART_CTS, 0, 7)>;
			bias-pull-up;
		};
	};

	uart0_sleep: uart0_sleep {
		group1 {
			psels = <NRF_PSEL(UART_TX, 0, 24)>,
			        <NRF_PSEL(UART_RX, 0, 25)>,
				    <NRF_PSEL(UART_RTS, 0, 1)>,
				    <NRF_PSEL(UART_CTS, 0, 7)>;
			low-power-enable;
		};
	};
	
	/* Board Test */
	spi1_default: spi1_default {
		group1 {
			psels = <NRF_PSEL(SPIM_SCK, 0, 13)>,
				<NRF_PSEL(SPIM_MOSI, 0, 14)>,
				<NRF_PSEL(SPIM_MISO, 0, 15)>;
		};
	};

	spi1_sleep: spi1_sleep {
		group1 {
			psels = <NRF_PSEL(SPIM_SCK, 0, 13)>,
				<NRF_PSEL(SPIM_MOSI, 0, 14)>,
				<NRF_PSEL(SPIM_MISO, 0, 15)>;
			low-power-enable;
		};
	};

	// /* Headband v1*/
	// spi1_default: spi1_default {
	// 	group1 {
	// 		psels = <NRF_PSEL(SPIM_SCK, 0, 13)>,
	// 			<NRF_PSEL(SPIM_MOSI, 0, 15)>,
	// 			<NRF_PSEL(SPIM_MISO, 0, 14)>;
	// 	};
	// };

	// spi1_sleep: spi1_sleep {
	// 	group1 {
	// 		psels = <NRF_PSEL(SPIM_SCK, 0, 13)>,
	// 			<NRF_PSEL(SPIM_MOSI, 0, 15)>,
	// 			<NRF_PSEL(SPIM_MISO, 0, 14)>;
	// 		low-power-enable;
	// 	};
	// };

	/* Headband v2*/
	// spi1_default: spi1_default {
	// 	group1 {
	// 		psels = <NRF_PSEL(SPIM_SCK, 0, 13)>,
	// 			<NRF_PSEL(SPIM_MOSI, 0, 14)>,
	// 			<NRF_PSEL(SPIM_MISO, 0, 15)>;
	// 	};
	// };

	// spi1_sleep: spi1_sleep {
	// 	group1 {
	// 		psels = <NRF_PSEL(SPIM_SCK, 0, 13)>,
	// 			<NRF_PSEL(SPIM_MOSI, 0, 14)>,
	// 			<NRF_PSEL(SPIM_MISO, 0, 15)>;
	// 		low-power-enable;
	// 	};
	// };
};


ads1299spi: &spi1 {
	compatible = "nordic,nrf-spi";
	pinctrl-0 = <&spi1_default>;
	pinctrl-1 = <&spi1_sleep>;
	pinctrl-names = "default", "sleep";
	cs-gpios = <&gpio0 8 GPIO_ACTIVE_LOW>;
	ads1299cs_0: ads1299cs_0@0 {
		reg = < 0 >;
	};
};