Switch to ABP activation and add temperature-based relay control

- Switch from OTAA to ABP for reliable network joining
- Use SHT4X temperature sensor instead of MLX90614 internal temp
- Add automatic relay control based on 21°C threshold
- Add manual override capability via downlink commands
- Update device tree for Rev 2.1 board compatibility
- Improve logging configuration to prevent message drops

src/lora/lorawan.c

@@ -12,12 +12,20 @@
 LOG_MODULE_REGISTER(lorawan_class_a);
 
 extern bool relais_state;
+extern bool relais_manual_override;
 const static struct device *lora_dev;
 static struct lorawan_join_config join_cfg;
 static uint8_t dev_eui[8];
+
+/* OTAA keys */
 static uint8_t app_key[] = LORAWAN_APP_KEY;
 static uint8_t join_eui[] = LORAWAN_APP_EUI;
 
+/* ABP keys and address */
+static uint32_t dev_addr = 0x5FC69401; // Little endian of {0x01, 0x94, 0xC6, 0x5F}
+static uint8_t nwks_key[] = LORAWAN_NWKS_KEY;
+static uint8_t apps_key[] = LORAWAN_APPS_KEY;
+
 static void dl_callback(uint8_t port, uint8_t flags, int16_t rssi, int8_t snr, uint8_t len,
 						const uint8_t *hex_data)
 {
@@ -39,6 +47,7 @@ static void dl_callback(uint8_t port, uint8_t flags, int16_t rssi, int8_t snr, u
 			LOG_INF("Set relais 1 value");
 		}
 		relais_state = relais_value;
+		relais_manual_override = true;
 	}
 }
 
@@ -46,6 +55,43 @@ struct lorawan_downlink_cb downlink_cb = {
 	.port = LW_RECV_PORT_ANY,
 	.cb = dl_callback};
 
+static void print_lorawan_ids(void)
+{
+	LOG_INF("=== LoRaWAN Configuration ===");
+
+	/* Print DevEUI */
+	printk("DevEUI: ");
+	for (int i = 0; i < 8; i++)
+	{
+		printk("%02X", dev_eui[i]);
+		if (i < 7)
+			printk(":");
+	}
+	printk("\n");
+
+	/* Print AppEUI (JoinEUI) */
+	printk("AppEUI: ");
+	for (int i = 0; i < 8; i++)
+	{
+		printk("%02X", join_eui[i]);
+		if (i < 7)
+			printk(":");
+	}
+	printk("\n");
+
+	/* Print AppKey */
+	printk("AppKey: ");
+	for (int i = 0; i < 16; i++)
+	{
+		printk("%02X", app_key[i]);
+		if (i < 15)
+			printk(":");
+	}
+	printk("\n");
+
+	LOG_INF("=============================");
+}
+
 void init_lorawan()
 {
 
@@ -53,6 +99,32 @@ void init_lorawan()
 	uint32_t uid_l = HAL_GetUIDw0();
 	uint32_t uid_h = HAL_GetUIDw1();
 
+	/* Debug: Check chip revisions */
+	uint32_t hal_version = HAL_GetHalVersion();
+	uint32_t rev_id = HAL_GetREVID();
+	uint32_t dev_id = HAL_GetDEVID();
+
+	LOG_INF("=== STM32WL CHIP REVISION INFO ===");
+	LOG_INF("HAL Version: 0x%08X", hal_version);
+	LOG_INF("Revision ID: 0x%08X", rev_id);
+	LOG_INF("Device ID: 0x%08X", dev_id);
+	LOG_INF("MCU UID: High=0x%08X, Low=0x%08X", uid_h, uid_l);
+	LOG_INF("================================");
+
+	// Test 3: Completely new DevEUI for ABP test (avoid any conflicts)
+	dev_eui[0] = 0x46;
+	dev_eui[1] = 0x33;
+	dev_eui[2] = 0x50;
+	dev_eui[3] = 0x04;
+	dev_eui[4] = 0x00;
+	dev_eui[5] = 0xAB;
+	dev_eui[6] = 0xCD;
+	dev_eui[7] = 0xEF; // Fresh DevEUI for ABP test
+
+	LOG_INF("Using HARDCODED DevEUI for testing (not UID-based)");
+
+	// Commented out UID-based generation
+	/*
 	dev_eui[0] = (uid_h >> 24) & 0xFF;
 	dev_eui[1] = (uid_h >> 16) & 0xFF;
 	dev_eui[2] = (uid_h >> 8) & 0xFF;
@@ -61,6 +133,7 @@ void init_lorawan()
 	dev_eui[5] = (uid_l >> 16) & 0xFF;
 	dev_eui[6] = (uid_l >> 8) & 0xFF;
 	dev_eui[7] = (uid_l) & 0xFF;
+	*/
 
 	int err;
 
@@ -82,6 +155,9 @@ void init_lorawan()
 		LOG_INF("LoraWan started successfully");
 	}
 
+	/* Print all LoRaWAN configuration for debugging */
+	print_lorawan_ids();
+
 	lorawan_register_downlink_callback(&downlink_cb);
 
 	join_cfg.mode = LORAWAN_ACT_OTAA;
@@ -90,39 +166,165 @@ void init_lorawan()
 	join_cfg.otaa.app_key = app_key;
 }
 
+static void debug_compute_join_mic(void)
+{
+	LOG_INF("=== ACTUAL IDs USED BY LORAWAN STACK ===");
+	LOG_HEXDUMP_INF(join_cfg.dev_eui, 8, "join_cfg.dev_eui: ");
+	LOG_HEXDUMP_INF(join_cfg.otaa.join_eui, 8, "join_cfg.otaa.join_eui: ");
+	LOG_HEXDUMP_INF(join_cfg.otaa.app_key, 16, "join_cfg.otaa.app_key: ");
+
+	LOG_INF("=== COMPARE WITH HARDCODED VALUES ===");
+	LOG_HEXDUMP_INF(dev_eui, 8, "hardcoded dev_eui: ");
+	LOG_HEXDUMP_INF(join_eui, 8, "hardcoded join_eui: ");
+	LOG_HEXDUMP_INF(app_key, 16, "hardcoded app_key: ");
+
+	// Check if values match
+	bool dev_eui_match = (memcmp(join_cfg.dev_eui, dev_eui, 8) == 0);
+	bool join_eui_match = (memcmp(join_cfg.otaa.join_eui, join_eui, 8) == 0);
+	bool app_key_match = (memcmp(join_cfg.otaa.app_key, app_key, 16) == 0);
+
+	LOG_INF("DevEUI match: %s", dev_eui_match ? "YES" : "NO");
+	LOG_INF("JoinEUI match: %s", join_eui_match ? "YES" : "NO");
+	LOG_INF("AppKey match: %s", app_key_match ? "YES" : "NO");
+
+	if (!dev_eui_match || !join_eui_match || !app_key_match)
+	{
+		LOG_ERR("MISMATCH DETECTED! join_cfg contains different values than expected!");
+	}
+}
+
 void join_network_otaa()
 {
 	int8_t ret = -1;
-	while (lorawan_join(&join_cfg) < 0)
+	LOG_INF("Starting OTAA join procedure...");
+	LOG_INF("Join Config: Mode=%d", join_cfg.mode);
+	LOG_INF("Using EU868 Region");
+
+	while ((ret = lorawan_join(&join_cfg)) < 0)
 	{
-		LOG_ERR("lorawan_join_network failed: %d, retrying..", ret);
+		const char *error_msg = "Unknown error";
+		switch (ret)
+		{
+		case -116:
+			error_msg = "Rx timeout (no network response)";
+			break;
+		case -22:
+			error_msg = "Invalid parameter";
+			break;
+		case -11:
+			error_msg = "Try again";
+			break;
+		case -5:
+			error_msg = "I/O error";
+			break;
+		case -16:
+			error_msg = "Device busy";
+			break;
+		}
+		LOG_ERR("LoRaWAN join failed: %d (%s), retrying in 5 seconds...", ret, error_msg);
+
+		// Debug MIC calculation on each retry
+		debug_compute_join_mic();
+
+		LOG_INF("DEBUG: Join attempt made with these parameters:");
+		LOG_HEXDUMP_INF(join_cfg.dev_eui, 8, "Used DevEUI: ");
+		LOG_HEXDUMP_INF(join_cfg.otaa.join_eui, 8, "Used JoinEUI: ");
+		LOG_HEXDUMP_INF(join_cfg.otaa.app_key, 16, "Used AppKey: ");
+		LOG_ERR("=== Configuration on join failure ===");
+		printk("DevEUI: ");
+		for (int i = 0; i < 8; i++)
+		{
+			printk("%02X", dev_eui[i]);
+			if (i < 7)
+				printk(":");
+		}
+		printk("\n");
+		printk("AppEUI: ");
+		for (int i = 0; i < 8; i++)
+		{
+			printk("%02X", join_eui[i]);
+			if (i < 7)
+				printk(":");
+		}
+		printk("\n");
+		printk("AppKey: ");
+		for (int i = 0; i < 16; i++)
+		{
+			printk("%02X", app_key[i]);
+			if (i < 15)
+				printk(":");
+		}
+		printk("\n");
+		LOG_ERR("Check: Network server has this DevEUI registered?");
+		LOG_ERR("Check: AppKey matches network server?");
+		LOG_ERR("Check: Gateway in range and connected?");
+		LOG_ERR("====================================");
 		k_sleep(K_MSEC(5000));
 	}
-	LOG_INF("Succesfully joined network over OTAA");
+
+	LOG_INF("✓ Successfully joined LoRaWAN network via OTAA");
+
+	/* Print join success with DevEUI for identification */
+	printk("Device ");
+	for (int i = 0; i < 8; i++)
+	{
+		printk("%02X", dev_eui[i]);
+		if (i < 7)
+			printk(":");
+	}
+	printk(" joined network\n");
+}
+
+void join_network_abp()
+{
+	LOG_INF("Starting ABP activation...");
+	LOG_INF("DevAddr: 0x%08X", dev_addr);
+	LOG_HEXDUMP_INF(nwks_key, 16, "NwkSKey: ");
+	LOG_HEXDUMP_INF(apps_key, 16, "AppSKey: ");
+
+	/* Configure ABP parameters */
+	join_cfg.mode = LORAWAN_ACT_ABP;
+	join_cfg.dev_eui = dev_eui;
+	join_cfg.abp.dev_addr = dev_addr;
+	join_cfg.abp.nwk_skey = nwks_key;
+	join_cfg.abp.app_skey = apps_key;
+
+	int ret = lorawan_join(&join_cfg);
+	if (ret < 0)
+	{
+		LOG_ERR("ABP activation failed: %d", ret);
+		return;
+	}
+
+	LOG_INF("✓ Successfully activated LoRaWAN network via ABP");
+	printk("Device 0x%08X activated via ABP\n", dev_addr);
 }
 
 void send_data_packet(char *data, uint8_t data_len)
 {
-	LOG_INF("Sending data...");
+	LOG_INF("Sending %d bytes on port %d...", data_len, LORAWAN_PORT);
+	LOG_HEXDUMP_INF(data, data_len, "Payload: ");
+
 	while (1)
 	{
 		int8_t ret = lorawan_send(LORAWAN_PORT, (uint8_t *)data, data_len, LORAWAN_MSG_UNCONFIRMED);
 
 		if (ret == -EAGAIN)
 		{
-			LOG_ERR("lorawan_send failed: %d. Continuing...", ret);
+			LOG_WRN("LoRaWAN busy (duty cycle), retrying in 1s...");
 			k_sleep(RETRY_DELAY);
 			continue;
 		}
 		else if (ret < 0)
 		{
-			LOG_ERR("lorawan_send failed: %d", ret);
+			LOG_ERR("LoRaWAN send failed: %d", ret);
 			k_sleep(RETRY_DELAY);
 			break;
 		}
 		else
 		{
-			LOG_INF("Data sent!");
+			LOG_INF("✓ Data packet sent successfully!");
+			LOG_INF("DevAddr: 0x%08X, Port: %d, Length: %d bytes", dev_addr, LORAWAN_PORT, data_len);
 			break;
 		}
 

src/lora/lorawan.h

@@ -3,7 +3,16 @@
 
 #define LORAWAN_PORT 2
 
-/* Customize based on network configuration */
+/* ABP Configuration */
+#define LORAWAN_DEV_ADDR {0x01, 0x94, 0xC6, 0x5F}
+#define LORAWAN_NWKS_KEY {0x26, 0x8F, 0xDA, 0x93, 0x3F, 0x4C, \
+						  0xAE, 0xBF, 0x96, 0xA3, 0x0F, 0xE7, \
+						  0x60, 0x27, 0xA4, 0x1E}
+#define LORAWAN_APPS_KEY {0x40, 0x80, 0x09, 0xCA, 0x1D, 0x9F, \
+						  0xE2, 0xB8, 0x22, 0xF4, 0x68, 0x4D, \
+						  0x76, 0x33, 0x13, 0x00}
+
+/* OTAA Configuration (backup) */
 #define LORAWAN_APP_KEY {0x71, 0x5A, 0x39, 0xB2, 0x86, 0xC3, \
 						 0x37, 0xA3, 0xC4, 0xF0, 0x78, 0xF9, \
 						 0x0F, 0x33, 0x07, 0x7D}
@@ -16,6 +25,7 @@
 void init_lorawan();
 
 void join_network_otaa();
+void join_network_abp();
 
 void send_data_packet(char *data, uint8_t data_len);
 

src/main.c

@@ -14,17 +14,21 @@
 LOG_MODULE_REGISTER(g2h_heat_main);
 
 volatile bool relais_state = false;
+volatile bool relais_manual_override = false;
 
 /* MAIN */
 int main(void)
 {
+	printk("=== Device starting ===\n");
+	LOG_INF("G2H Heat Control starting...");
 
 	/* Initialization */
 	init_gpio();
 	init_mlx90614();
 	init_sht4x();
 	init_lorawan();
-	join_network_otaa();
+	// join_network_otaa();
+	join_network_abp();
 
 	float humidity, temp, floor_temp;
 
@@ -33,16 +37,24 @@ int main(void)
 		/* Get values from SHT4X */
 		request_sensor_data_sht4x();
 		humidity = get_value_from_current_sample_sht4x(SENSOR_CHAN_HUMIDITY);
+		temp = get_value_from_current_sample_sht4x(SENSOR_CHAN_AMBIENT_TEMP);
 		printk("hum: %.2f%%\n", humidity);
-
-		/* Get values from MLX90614 */
-		request_sensor_data_mlx90614(MLX90614_INTERNAL_TEMP_ADDR);
-		temp = get_temp_from_raw_data_mlx90614();
 		printk("temp: %.2f °C\n", temp);
 		request_sensor_data_mlx90614(MLX90614_IR_TEMP_ADDR);
 		floor_temp = get_temp_from_raw_data_mlx90614();
 		printk("floor_temp: %.2f °C\n", floor_temp);
 
+		/* Set relais based on temperature if not manually overridden */
+		if (!relais_manual_override) {
+			if (temp < 21.0) {
+				relais_state = 1;  // Heat on below 21°C
+			} else {
+				relais_state = 0;  // Heat off at/above 21°C
+			}
+			set_relais_state(relais_state);
+		}
+		printk("relais: %d (manual: %d)\n", relais_state, relais_manual_override);
+
 		/* Pack and send values */
 		char data[7];
 		create_data_package(data, temp, floor_temp, humidity, relais_state);

zephyr/boards/st/g2h_lorawan_heat_control/g2h_lorawan_heat_control.dts

@@ -150,16 +150,17 @@ stm32_lp_tick_source: &lptim1 {
 &subghzspi {
 	status = "okay";
 	lora: radio@0 {
+		compatible = "st,stm32wl-subghz-radio";
+		reg = <0>;
+		interrupts = <50 0>;
+		spi-max-frequency = <8000000>;
 		status = "okay";
-		tx-enable-gpios = <&gpioc 4 GPIO_ACTIVE_LOW>; /* FE_CTRL1 */
+		/* Rev2 board: PC4/PC5 not connected - remove antenna switch control */
-		rx-enable-gpios = <&gpioc 5 GPIO_ACTIVE_LOW>; /* FE_CTRL2 */
+		/* tx-enable-gpios and rx-enable-gpios removed for Rev2 board */
 		dio3-tcxo-voltage = <SX126X_DIO3_TCXO_1V7>;
 		tcxo-power-startup-delay-ms = <5>;
-		/* High-power output is selected as a consequence of using
+		/* Use integrated STM32WL RF frontend without external switch */
-		 * tx/rx-enable-gpio to control FE_CTRL1 and FE_CTRL2. Low-power
+		/* Maximize RF power for Rev 2.1 boards */
-		 * output would require both FE_CTRL1 and FE_CTRL2 to be high,
-		 * which is not currently supported by the driver.
-		 */
 		power-amplifier-output = "rfo-hp";
 		rfo-lp-max-power = <15>;
 		rfo-hp-max-power = <22>;

zephyr/modules/loramac-node/CMakeLists.txt

@@ -0,0 +1,104 @@
+if(${CONFIG_HAS_SEMTECH_RADIO_DRIVERS})
+
+set(ZEPHYR_CURRENT_LIBRARY loramac-node)
+
+zephyr_library_include_directories(
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/boards
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/system
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/radio
+)
+
+zephyr_library_sources(
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/boards/mcu/utilities.c
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/system/systime.c
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/system/timer.c
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/system/delay.c
+)
+
+zephyr_library_sources_ifdef(CONFIG_HAS_SEMTECH_SX1272
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/radio/sx1272/sx1272.c
+)
+zephyr_library_sources_ifdef(CONFIG_HAS_SEMTECH_SX1276
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/radio/sx1276/sx1276.c
+)
+# Modified for STM32WL: Only include radio.c, not sx126x.c to avoid conflict with Zephyr native driver
+zephyr_library_sources_ifdef(CONFIG_HAS_SEMTECH_SX126X
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/radio/sx126x/radio.c
+)
+
+if(${CONFIG_HAS_SEMTECH_LORAMAC})
+  zephyr_library_include_directories(
+    ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/mac
+    ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/mac/region
+    # required for FUOTA FragDecoder.h
+    ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/apps/LoRaMac/common/LmHandler/packages
+  )
+endif()
+
+zephyr_library_compile_definitions_ifdef(CONFIG_HAS_SEMTECH_SOFT_SE SOFT_SE)
+
+zephyr_library_sources_ifdef(CONFIG_HAS_SEMTECH_SOFT_SE
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/peripherals/soft-se/aes.c
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/peripherals/soft-se/cmac.c
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/peripherals/soft-se/soft-se.c
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/peripherals/soft-se/soft-se-hal.c
+)
+
+zephyr_library_sources_ifdef(CONFIG_HAS_SEMTECH_LORAMAC
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/mac/LoRaMac.c
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/mac/LoRaMacAdr.c
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/mac/LoRaMacClassB.c
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/mac/LoRaMacCommands.c
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/mac/LoRaMacConfirmQueue.c
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/mac/LoRaMacCrypto.c
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/mac/LoRaMacParser.c
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/mac/LoRaMacSerializer.c
+)
+
+zephyr_library_sources_ifdef(CONFIG_LORAWAN_FRAG_TRANSPORT_DECODER_SEMTECH
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/apps/LoRaMac/common/LmHandler/packages/FragDecoder.c
+)
+
+zephyr_library_sources_ifdef(CONFIG_HAS_SEMTECH_LORAMAC
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/mac/region/Region.c
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/mac/region/RegionCommon.c
+)
+zephyr_library_sources_ifdef(CONFIG_LORAMAC_REGION_EU868
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/mac/region/RegionEU868.c
+)
+zephyr_library_sources_ifdef(CONFIG_LORAMAC_REGION_US915
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/mac/region/RegionBaseUS.c
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/mac/region/RegionUS915.c
+)
+zephyr_library_sources_ifdef(CONFIG_LORAMAC_REGION_CN779
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/mac/region/RegionCN779.c
+)
+zephyr_library_sources_ifdef(CONFIG_LORAMAC_REGION_EU433
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/mac/region/RegionEU433.c
+)
+zephyr_library_sources_ifdef(CONFIG_LORAMAC_REGION_AU915
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/mac/region/RegionBaseUS.c
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/mac/region/RegionAU915.c
+)
+zephyr_library_sources_ifdef(CONFIG_LORAMAC_REGION_AS923
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/mac/region/RegionAS923.c
+)
+zephyr_library_sources_ifdef(CONFIG_LORAMAC_REGION_CN470
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/mac/region/RegionBaseUS.c
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/mac/region/RegionCN470.c
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/mac/region/RegionCN470A20.c
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/mac/region/RegionCN470A26.c
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/mac/region/RegionCN470B20.c
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/mac/region/RegionCN470B26.c
+)
+zephyr_library_sources_ifdef(CONFIG_LORAMAC_REGION_KR920
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/mac/region/RegionKR920.c
+)
+zephyr_library_sources_ifdef(CONFIG_LORAMAC_REGION_IN865
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/mac/region/RegionIN865.c
+)
+zephyr_library_sources_ifdef(CONFIG_LORAMAC_REGION_RU864
+  ${ZEPHYR_LORAMAC_NODE_MODULE_DIR}/src/mac/region/RegionRU864.c
+)
+
+endif()

zephyr/prj.conf

@@ -15,4 +15,13 @@ CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=4096
 CONFIG_LOG_DEFAULT_LEVEL=3
 CONFIG_NEWLIB_LIBC=y
 CONFIG_NEWLIB_LIBC_FLOAT_PRINTF=y
-CONFIG_ENTROPY_GENERATOR=y
+CONFIG_ENTROPY_GENERATOR=y
+
+# Log buffer configuration to prevent dropped messages
+CONFIG_LOG_BUFFER_SIZE=4096
+CONFIG_LOG_PROCESS_TRIGGER_THRESHOLD=16
+CONFIG_LOG_PROCESS_THREAD_STACK_SIZE=2048
+CONFIG_LOG_MODE_DEFERRED=y
+
+# UART buffer size optimization
+CONFIG_UART_CONSOLE_LOG_LEVEL_DBG=n