Started adding a b-parasite board. Not working yet

code/nrf-connect/CMakeLists.txt

@@ -1,6 +1,9 @@
 cmake_minimum_required(VERSION 3.20.0)
 
 find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
-project(hello_world)
+
+project(b_parasite)
+
+# set(BOARD_ROOT .)
 
 target_sources(app PRIVATE src/main.c src/prst/shtc3.c src/prst/adc.c)

code/nrf-connect/boards/arm/parasite/Kconfig.board

@@ -0,0 +1,4 @@
+
+config BOARD_B_PARASITE
+	bool "b-parasite board"
+	depends on SOC_NRF52840_QIAA

code/nrf-connect/boards/arm/parasite/Kconfig.defconfig

@@ -0,0 +1,7 @@
+
+if BOARD_PARASITE
+
+config BOARD
+	default "parasite"
+
+endif  # BOARD_PARASITE

code/nrf-connect/boards/arm/parasite/parasite.dts

@@ -0,0 +1,151 @@
+/dts-v1/;
+#include <nordic/nrf52840_qiaa.dtsi>
+
+&pinctrl {
+	/* Configure pwm0 instance to use pin 5. */
+	pwm0_default: pwm0_default {
+		group1 {
+			psels = <NRF_PSEL(PWM_OUT0, 0, 5)>;
+			nordic,invert;
+		};
+	};
+
+	pwm0_sleep: pwm0_sleep {
+		group1 {
+			psels = <NRF_PSEL(PWM_OUT0, 0, 5)>;
+			low-power-enable;
+		};
+	};
+
+	/* Configure i2c0 instance to use pins 24 (SDA) & 13 (SCL). */
+	i2c0_default: i2c0_default {
+		group1 {
+			psels = <NRF_PSEL(TWIM_SDA, 0, 24)>,
+							<NRF_PSEL(TWIM_SCL, 0, 13)>;
+		};
+	};
+
+	i2c0_sleep: i2c0_sleep {
+		group1 {
+			psels = <NRF_PSEL(TWIM_SDA, 0, 24)>,
+							<NRF_PSEL(TWIM_SCL, 0, 13)>;
+			low-power-enable;
+		};
+	};
+};
+
+&i2c0 {
+	compatible = "nordic,nrf-twi";
+	status = "okay";
+	pinctrl-0 = <&i2c0_default>;
+	pinctrl-1 = <&i2c0_sleep>;
+	pinctrl-names = "default", "sleep";
+
+	shtc3: shtc3@70 {
+		compatible = "i2c-device";
+		reg = <0x70>;
+		label = "SHTC3";
+	};
+};
+
+&pwm0 {
+	status = "okay";
+	pinctrl-0 = <&pwm0_default>;
+	pinctrl-1 = <&pwm0_sleep>;
+	pinctrl-names = "default", "sleep";
+};
+
+&adc {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "ok";
+	channel@0 {
+		reg = <0>;
+		zephyr,gain = "ADC_GAIN_1_6";
+		zephyr,reference = "ADC_REF_INTERNAL";
+		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
+		// P0.03.
+		zephyr,input-positive = <NRF_SAADC_AIN1>;
+		zephyr,resolution = <10>;
+
+	};
+
+	channel@1 {
+		reg = <1>;
+		zephyr,gain = "ADC_GAIN_1_6";
+		zephyr,reference = "ADC_REF_INTERNAL";
+		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
+		// P0.02.
+		zephyr,input-positive = <NRF_SAADC_AIN0>;
+		zephyr,resolution = <10>;
+	};
+
+	channel@2 {
+		reg = <2>;
+		zephyr,gain = "ADC_GAIN_1_6";
+		zephyr,reference = "ADC_REF_INTERNAL";
+		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
+		zephyr,input-positive = <NRF_SAADC_VDD>;
+		zephyr,resolution = <10>;
+	};
+};
+
+
+&flash0 {
+
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		boot_partition: partition@0 {
+			label = "mcuboot";
+			reg = <0x00000000 0x0000C000>;
+		};
+		slot0_partition: partition@c000 {
+			label = "image-0";
+			reg = <0x0000C000 0x00067000>;
+		};
+		slot1_partition: partition@73000 {
+			label = "image-1";
+			reg = <0x00073000 0x00067000>;
+		};
+		scratch_partition: partition@da000 {
+			label = "image-scratch";
+			reg = <0x000da000 0x0001e000>;
+		};
+
+		/*
+		 * The flash starting at 0x000f8000 and ending at
+		 * 0x000fffff is reserved for use by the application.
+		 */
+
+		/*
+		 * Storage partition will be used by FCB/LittleFS/NVS
+		 * if enabled.
+		 */
+		storage_partition: partition@f8000 {
+			label = "storage";
+			reg = <0x000f8000 0x00008000>;
+		};
+	};
+};
+
+/ {
+
+	model = "A soil moisture sensor";
+	compatible = "rbaron,b-parasite";
+
+	zephyr,user {
+		io-channels = <&adc 0>, <&adc 1>, <&adc 2>;
+		zephyr,sram = &sram0;
+		zephyr,flash = &flash0;
+		zephyr,code-partition = &slot0_partition;
+	};
+
+	soil_pwm: soil_pwm {
+		compatible = "pwm-fixed";
+		pwms = <&pwm0 0 PWM_MSEC(100) PWM_POLARITY_INVERTED>;
+		pulse = <PWM_MSEC(50)>;
+	};
+};

code/nrf-connect/boards/arm/parasite/parasite_defconfig

@@ -0,0 +1,29 @@
+# SPDX-License-Identifier: Apache-2.0
+
+CONFIG_SOC_SERIES_NRF52X=y
+CONFIG_SOC_NRF52840_QIAA=y
+# CONFIG_BOARD_NRF52840DK_NRF52840=y
+
+# # Enable MPU
+CONFIG_ARM_MPU=y
+
+# # Enable hardware stack protection
+CONFIG_HW_STACK_PROTECTION=y
+
+# # Enable RTT
+CONFIG_USE_SEGGER_RTT=y
+
+# # enable GPIO
+CONFIG_GPIO=y
+
+# # enable uart driver
+CONFIG_SERIAL=y
+
+# # enable console
+CONFIG_CONSOLE=y
+CONFIG_UART_CONSOLE=y
+
+# # additional board options
+CONFIG_GPIO_AS_PINRESET=y
+
+CONFIG_PINCTRL=y