feat(power): refactor power sequencing and shutdown handling

boards/teco/openearable_v2/board_init.c

@@ -1,21 +1,12 @@
 #include <zephyr/init.h>
 #include <zephyr/kernel.h>
 #include <zephyr/device.h>
-#include <zephyr/pm/device.h>  // ✅ Correct Power Management API
 #include <zephyr/logging/log.h>
 LOG_MODULE_REGISTER(board_init, LOG_LEVEL_DBG);
 
-//#include "nrf5340_audio_common.h"
-
 #include <zephyr/drivers/gpio.h>
 
-#include <zephyr/pm/device.h>
-#include <zephyr/pm/device_runtime.h>
-
-#define load_switch_sd_id DT_NODELABEL(load_switch_sd)
-#define load_switch_1_8_id DT_NODELABEL(load_switch)
-#define load_switch_3_3_id DT_CHILD(DT_NODELABEL(bq25120a), load_switch)
-//#define load_switch_3_3_id DT_NODELABEL(lsctrl)
+#include "openearable_common.h"
 
 const struct device *const cons = DEVICE_DT_GET(DT_CHOSEN(zephyr_console));
 const struct device *const ls_1_8 = DEVICE_DT_GET(load_switch_1_8_id);

dts/bindings/load-switch.yaml → boards/teco/openearable_v2/dts/bindings/load-switch.yaml

@@ -22,3 +22,5 @@ properties:
     default: 1000
     description: |
       Delay in microseconds before enabling the load switch.
+  "#power-domain-cells":
+    const: 0

boards/teco/openearable_v2/mcuboot_hook.c

@@ -2,7 +2,6 @@
 #include <zephyr/kernel.h>
 #include <zephyr/device.h>
 
-//#include "bootutil/bootutil.h"
 #include "bootutil/boot_hooks.h"
 #include "bootutil/mcuboot_status.h"
 
@@ -22,63 +21,94 @@ void mcuboot_status_change(mcuboot_status_type_t status)
 {
     static bool led_initialized = false;
 
-    // Initialisiere LED beim ersten Aufruf
+    // Initialize LED on first call
     if (!led_initialized) {
         if (device_is_ready(led.port)) {
             gpio_pin_configure_dt(&led, GPIO_OUTPUT_INACTIVE);
             led_initialized = true;
         }
+        k_timer_init(&blink_timer, blink_timer_handler, NULL);
     }
 
+    /*
+     * The printk() calls below are kept (commented out) for future debugging.
+     *
+     * NOTE ON MCUBOOT CONSOLE LOGGING (RTT & USB CDC ACM):
+     * MCUboot executes extremely fast. By default, you will NOT see printk logs
+     * in RTT or USB UART, because of a timing race condition with the host PC:
+     *
+     * 1. RTT: MCUboot and the App have separate RTT control blocks in RAM. The
+     *    J-Link Viewer searches RAM for the block, but MCUboot usually jumps to
+     *    the App before J-Link can find and connect to MCUboot's RTT block.
+     * 2. USB UART (CDC ACM): Enumerable USB takes ~1-2 seconds. MCUboot finishes
+     *    executing long before the PC creates /dev/ttyACM0.
+     *
+     * HOW TO VIEW THESE PRINTS:
+     * - RTT / USB CDC ACM: You must configure the backend in sysbuild/mcuboot/prj.conf,
+     *   AND you must add a blocking delay (e.g., k_msleep(3000);) right here at
+     *   the STARTUP case to give your PC/Viewer time to connect before MCUboot exits.
+     * - Hardware UART: The most reliable method. Route CONFIG_UART_CONSOLE=y to
+     *   physical TTL pins. It is stateless and does not require artificial delays.
+     */
+    // printk("mcuboot_status_change: %d\n", status);
+
     switch (status) {
         case MCUBOOT_STATUS_STARTUP:
-            //state_indicator.set_state(STARTUP);
+            // printk("  STARTUP\n");
+            k_timer_start(&blink_timer, K_MSEC(50), K_MSEC(50));
             break;
         case MCUBOOT_STATUS_UPGRADING:
-            k_timer_init(&blink_timer, blink_timer_handler, NULL);
+            // printk("  UPGRADING\n");
             k_timer_start(&blink_timer, K_MSEC(250), K_MSEC(250));
             break;
         case MCUBOOT_STATUS_BOOTABLE_IMAGE_FOUND:
+            // printk("  BOOTABLE_IMAGE_FOUND\n");
             k_timer_stop(&blink_timer);
             gpio_pin_set_dt(&led, 0);
             break;
         case MCUBOOT_STATUS_NO_BOOTABLE_IMAGE_FOUND:
+            // printk("  NO_BOOTABLE_IMAGE_FOUND\n");
             k_timer_stop(&blink_timer);
             gpio_pin_set_dt(&led, 1);
             break;
         case MCUBOOT_STATUS_BOOT_FAILED:
-            //state_indicator.set_state(BOOT_FAILED);
+            // printk("  BOOT_FAILED\n");
+            k_timer_stop(&blink_timer);
+            gpio_pin_set_dt(&led, 1);
             break;
         case MCUBOOT_STATUS_USB_DFU_WAITING:
-            //state_indicator.set_state(USB_DFU_WAITING);
+            // printk("  USB_DFU_WAITING\n");
             break;
         case MCUBOOT_STATUS_USB_DFU_ENTERED:
-            //state_indicator.set_state(USB_DFU_ENTERED);
+            // printk("  USB_DFU_ENTERED\n");
             break;
         case MCUBOOT_STATUS_USB_DFU_TIMED_OUT:
-            //state_indicator.set_state(USB_DFU_TIMED_OUT);
+            // printk("  USB_DFU_TIMED_OUT\n");
             break;
         case MCUBOOT_STATUS_SERIAL_DFU_ENTERED:
-            //state_indicator.set_state(SERIAL_DFU_ENTERED);
+            // printk("  SERIAL_DFU_ENTERED\n");
             break;
     }
 }
 
 int init_load_switch()
 {
     int ret;
+
+    // V_LS 1.8v is required for flash.
     static const struct gpio_dt_spec load_switch_pin = {
         .port = DEVICE_DT_GET(DT_NODELABEL(gpio1)),
         .pin = 11,
         .dt_flags = GPIO_ACTIVE_HIGH
     };
 
+    // LS 3.3v is required for the Error LED.
     static const struct gpio_dt_spec ls_3_3_pin = {
         .port = DEVICE_DT_GET(DT_NODELABEL(gpio0)),
         .pin = 14,
         .dt_flags = GPIO_ACTIVE_HIGH
     };
-
+    
     ret = device_is_ready(load_switch_pin.port);
     if (!ret) {
         printk("Pins not ready.\n");
@@ -87,26 +117,23 @@ int init_load_switch()
 
     ret = gpio_pin_configure_dt(&load_switch_pin, GPIO_OUTPUT_ACTIVE);
     if (ret != 0) {
-        printk("Failed to setup Load Switch.\n");
+        printk("Failed to setup 1.8V load switch.\n");
         return ret;
     }
 
+    ret = device_is_ready(ls_3_3_pin.port);
+    if (!ret) {
+        printk("Pins not ready.\n");
+        return -1;
+    }
+
     ret = gpio_pin_configure_dt(&ls_3_3_pin, GPIO_OUTPUT_ACTIVE);
     if (ret != 0) {
-        printk("Failed to setup 3.3V.\n");
+        printk("Failed to setup 3.3V load switch.\n");
         return ret;
     }
 
     return 0;
 }
 
-SYS_INIT(init_load_switch, PRE_KERNEL_2, 80);
-
-/*
-int wait() {
-    k_msleep(1);
-
-    return 0;
-}
-
-SYS_INIT(wait, POST_KERNEL, 80);*/
+SYS_INIT(init_load_switch, PRE_KERNEL_2, 80);

boards/teco/openearable_v2/openearable_v2_nrf5340_cpuapp_common.dts

@@ -30,12 +30,13 @@
 		 status = "okay";
 		 default-on;
 	 };
- 
+
 	 load_switch_sd: load_switch_sd {
 		 compatible = "load-switch";
 		 enable-gpios = <&gpio1 12 GPIO_ACTIVE_HIGH>;
 		 power-delay-us = <300>; // 250us per datasheet
 		 status = "okay";
+		 default-on;
 	 };
 
 	 gpio_fwd: nrf-gpio-forwarder {
@@ -119,15 +120,15 @@
 		load-switch {
 			compatible = "load-switch";
 			enable-gpios = <&gpio0 14 GPIO_ACTIVE_HIGH>;
-			power-delay-us = <600>; // 250us per datasheet
+			power-delay-us = <600>;
 			status = "okay";
+			zephyr,pm-device-runtime-auto;
         };
 	 };
-
-	 adau1860: adau1860@64 {
-		 compatible = "analog,adau1860";
-		 reg = <0x64>;
-		 enable-gpios = <&gpio0 4 GPIO_ACTIVE_HIGH>;
+
+	 ktd2026: ktd2026@30 {
+		 compatible = "i2c-device";
+		 reg = <0x30>;
 	 };
  };
 
@@ -146,21 +147,22 @@
         reg = <0x62>;
     };
 
-	mlx90632: mlx90632@3A {
-        compatible = "i2c-device";
-        reg = <0x3A>;
-    };
+	 adau1860: adau1860@64 {
+		 compatible = "adi,adau1860";
+		 reg = <0x64>;
+		 enable-gpios = <&gpio0 4 GPIO_ACTIVE_HIGH>;
+	 };
  };
- 
+
  &i2c3 {
 	 compatible = "nordic,nrf-twim";
 	 status = "okay";
 	 pinctrl-0 = <&i2c3_default>;
 	 pinctrl-1 = <&i2c3_sleep>;
 	 pinctrl-names = "default", "sleep";
 	 clock-frequency = <I2C_BITRATE_FAST_PLUS>;  // 1000 kHz
-	 zephyr,concat-buf-size = <512>;
-     zephyr,flash-buf-max-size = <512>;
+	 zephyr,concat-buf-size = <1088>;
+     zephyr,flash-buf-max-size = <1088>;
 
 	bmp388: bmp388@76 {
         compatible = "i2c-device";
@@ -175,6 +177,11 @@
 	bmx160: bmx160@68 {
         compatible = "i2c-device";
         reg = <0x68>;
+    };
+
+	mlx90632: mlx90632@3a {
+        compatible = "i2c-device";
+        reg = <0x3a>;
     };
  };