Refactor in files. Add BMP180 and SHT4x sensor, monitor VDD voltage, scheduling with timer

zephyr/CMakeLists.txt

@@ -0,0 +1,8 @@
+cmake_minimum_required(VERSION 3.20.0)
+set(BOARD nrf52dk_nrf52832)
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+
+project(tuxoutdoor)
+
+FILE(GLOB app_sources ../src/*.c*)
+target_sources(app PRIVATE ${app_sources})

zephyr/boards/nrf52dk_nrf52832.overlay

@@ -0,0 +1,76 @@
+/ {
+   vbatt {
+      compatible = "voltage-divider";
+      io-channels = <&adc 4>;
+      output-ohms = <4600>;
+      full-ohms = <(4600 + 3230)>;
+   }; 
+};
+
+
+/ {
+   zephyr,user {
+      io-channels = <&adc 2>;
+   };
+};
+
+&spi0 {
+  status = "disabled";
+};
+
+&spi1 {
+  status = "disabled";
+};
+
+
+&i2c0 {
+	status = "okay";
+	clock-frequency = <I2C_BITRATE_FAST>;
+	sht4x@44 {
+		status = "okay";
+		compatible = "sensirion,sht4x";
+		reg = <0x44>;
+		repeatability = <2>;
+	};
+};
+
+&i2c1 {
+  status = "disabled";
+};
+
+
+&pinctrl {
+	uart0_default: uart0_default {
+		group1 {
+			psels = <NRF_PSEL(UART_TX, 0, 19)>,
+				<NRF_PSEL(UART_RX, 0, 18)>,
+				<NRF_PSEL(UART_RTS, 0, 5)>,
+				<NRF_PSEL(UART_CTS, 0, 7)>;
+		};
+	};
+
+	uart0_sleep: uart0_sleep {
+		group1 {
+			psels = <NRF_PSEL(UART_TX, 0, 19)>,
+				<NRF_PSEL(UART_RX, 0, 18)>,
+				<NRF_PSEL(UART_RTS, 0, 5)>,
+				<NRF_PSEL(UART_CTS, 0, 7)>;
+			low-power-enable;
+		};
+	};
+
+	i2c0_default: i2c0_default {
+		group1 {
+			psels = <NRF_PSEL(TWIM_SDA, 0, 17)>,
+				<NRF_PSEL(TWIM_SCL, 0, 16)>;
+		};
+	};
+
+	i2c0_sleep: i2c0_sleep {
+		group1 {
+			psels = <NRF_PSEL(TWIM_SDA, 0, 17)>,
+				<NRF_PSEL(TWIM_SCL, 0, 16)>;
+			low-power-enable;
+		};
+	};
+};

zephyr/prj.conf

@@ -0,0 +1,41 @@
+CONFIG_BT=y
+#CONFIG_BT_SMP=y
+#CONFIG_BT_SIGNING=y
+#CONFIG_BT_PERIPHERAL=y
+#CONFIG_BT_PRIVACY=n # Random Address
+#CONFIG_BT_FIXED_PASSKEY=y
+CONFIG_BT_DEVICE_NAME="TuxOutdoor"
+#CONFIG_BT_DEVICE_APPEARANCE=833
+#CONFIG_BT_DEVICE_NAME_DYNAMIC=y
+#CONFIG_BT_KEYS_OVERWRITE_OLDEST=y
+#CONFIG_BT_SETTINGS=y
+
+#CONFIG_FLASH=y
+#CONFIG_FLASH_PAGE_LAYOUT=y
+#CONFIG_FLASH_MAP=y
+#CONFIG_NVS=y
+#CONFIG_SETTINGS=y
+
+CONFIG_SENSOR=y
+CONFIG_SHT4X=y
+
+CONFIG_LOG=y
+CONFIG_LOG_DEFAULT_LEVEL=2
+CONFIG_LOG_MAX_LEVEL=2
+CONFIG_LOG_PRINTK=y
+CONFIG_USE_SEGGER_RTT=y
+CONFIG_LOG_BACKEND_RTT=y
+CONFIG_UART_CONSOLE=n
+CONFIG_RTT_CONSOLE=y
+CONFIG_STDOUT_CONSOLE=y
+
+CONFIG_ADC=y
+CONFIG_GPIO=y
+CONFIG_SERIAL=y
+CONFIG_UART_INTERRUPT_DRIVEN=y
+
+CONFIG_BOARD_ENABLE_DCDC=n
+CONFIG_HEAP_MEM_POOL_SIZE=512
+
+CONFIG_NEWLIB_LIBC=y
+CONFIG_NEWLIB_LIBC_NANO=y