samples: bluetooth: Additional optimizations for Power Profiling

To reduce power consumption, the Bluetooth Peripheral power profiling
samples can be configured further. This commit adds such optimizations
and updates the documentation to inform the user how to reduce power
even more.

Signed-off-by: Dominik Kilian <[email protected]>

Author: doki-nordic

samples/bluetooth/peripheral_power_profiling/Kconfig

@@ -73,9 +73,15 @@ config BT_POWER_PROFILING_NON_CONNECTABLE_ADV_INTERVAL_MAX
 
 config BT_POWER_PROFILING_LED_DISABLED
 	bool "Disable LEDs"
+	default y
 	help
 	  Disables the LEDs to reduce power consumption.
 
+config BT_POWER_PROFILING_NFC_DISABLED
+	bool "Disable NFC"
+	help
+	  Disables the NFC to reduce power consumption.
+
 config SETTINGS
 	default y
 

samples/bluetooth/peripheral_power_profiling/README.rst

@@ -224,6 +224,17 @@ CONFIG_BT_POWER_PROFILING_NON_CONNECTABLE_ADV_INTERVAL_MAX - Non-connectable adv
 CONFIG_BT_POWER_PROFILING_LED_DISABLED - Disable LEDs
    Disables the LEDs to reduce power consumption.
 
+.. _CONFIG_BT_POWER_PROFILING_NFC_DISABLED:
+
+CONFIG_BT_POWER_PROFILING_NFC_DISABLED - Disable NFC
+   Disables the NFC to reduce power consumption.
+
+You can also consider using the following global configuration options to disable the console and UART, reducing power consumption:
+
+* :kconfig:option:`CONFIG_SERIAL`
+* :kconfig:option:`CONFIG_CONSOLE`
+* :kconfig:option:`CONFIG_UART_CONSOLE`
+
 Building and running
 ********************
 

samples/bluetooth/peripheral_power_profiling/src/main.c

@@ -104,7 +104,7 @@ static const struct bt_le_adv_param *connectable_ad_params =
 			NULL);
 
 static const struct bt_le_adv_param *non_connectable_ad_params =
-	BT_LE_ADV_PARAM(BT_LE_ADV_OPT_SCANNABLE,
+	BT_LE_ADV_PARAM(BT_LE_ADV_OPT_NONE,
 			NON_CONNECTABLE_ADV_INTERVAL_MIN,
 			NON_CONNECTABLE_ADV_INTERVAL_MAX,
 			NULL);
@@ -774,10 +774,12 @@ int main(void)
 		return 0;
 	}
 
-	err = nfc_init();
-	if (err) {
-		printk("Failed to initialize NFC (err %d)\n", err);
-		return 0;
+	if (!IS_ENABLED(BT_POWER_PROFILING_NFC_DISABLED)) {
+		err = nfc_init();
+		if (err) {
+			printk("Failed to initialize NFC (err %d)\n", err);
+			return 0;
+		}
 	}
 
 	button_handler(button_state, has_changed);
@@ -786,8 +788,12 @@ int main(void)
 		k_work_schedule(&system_off_work, K_SECONDS(SYSTEM_OFF_DELAY));
 	}
 
-	for (;;) {
-		set_led(RUN_STATUS_LED, (++blink_status) % 2);
-		k_sleep(K_MSEC(RUN_LED_BLINK_INTERVAL));
+	if (!IS_ENABLED(CONFIG_BT_POWER_PROFILING_LED_DISABLED)) {
+		for (;;) {
+			set_led(RUN_STATUS_LED, (++blink_status) % 2);
+			k_sleep(K_MSEC(RUN_LED_BLINK_INTERVAL));
+		}
+	} else {
+		return 0;
 	}
 }