bootloader somehow working

Signed-off-by: Eduard Iten <eduard@iten.pro>

software/apps/bl_test/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.20.0)
+
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+project(bl_test)
+
+# Add application source files
+target_sources(app PRIVATE src/main.c)

software/apps/bl_test/VERSION

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+VERSION_MAJOR = 0
+VERSION_MINOR = 0
+PATCHLEVEL = 1
+VERSION_TWEAK = 1
+EXTRAVERSION = devel

software/apps/bl_test/prj.conf

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+# Enable Console and printk for logging via UART
+CONFIG_CONSOLE=y
+CONFIG_LOG=y
+CONFIG_UART_CONSOLE=y
+
+# Enable more detailed MCUMGR logging
+CONFIG_MCUMGR_LOG_LEVEL_DBG=y
+CONFIG_IMG_MANAGER_LOG_LEVEL_DBG=y
+CONFIG_STREAM_FLASH_LOG_LEVEL_DBG=y
+
+# Enable USB for MCUMGR only
+CONFIG_USB_DEVICE_STACK=y
+CONFIG_USB_CDC_ACM=y
+CONFIG_USB_DEVICE_INITIALIZE_AT_BOOT=y
+
+# USB CDC ACM buffer configuration for better MCUMGR performance
+CONFIG_USB_CDC_ACM_RINGBUF_SIZE=1024
+
+# Set log level to info for reasonable size
+CONFIG_LOG_DEFAULT_LEVEL=3
+
+# Enable MCUMGR info logging (not debug to save space)
+CONFIG_MCUMGR_LOG_LEVEL_INF=y
+
+# Enable USB CDC info logging
+CONFIG_USB_CDC_ACM_LOG_LEVEL_INF=y
+
+# STEP 5.2 - Enable mcumgr DFU in application
+# Enable MCUMGR 
+CONFIG_MCUMGR=y  # Enable MCUMGR management for both OS and Images
+CONFIG_MCUMGR_GRP_OS=y
+CONFIG_MCUMGR_GRP_IMG=y  
+
+# Configure MCUMGR transport to UART (will use USB-CDC via chosen device)
+CONFIG_MCUMGR_TRANSPORT_UART=y
+
+# Dependencies
+# Configure dependencies for CONFIG_MCUMGR 
+CONFIG_NET_BUF=y
+CONFIG_ZCBOR=y
+CONFIG_CRC=y  # Configure dependencies for CONFIG_MCUMGR_GRP_IMG 
+CONFIG_FLASH=y
+CONFIG_IMG_MANAGER=y  # Configure dependencies for CONFIG_IMG_MANAGER 
+CONFIG_STREAM_FLASH=y
+CONFIG_FLASH_MAP=y  # Configure dependencies for CONFIG_MCUMGR_TRANSPORT_USB_CDC 
+CONFIG_BASE64=y

software/apps/bl_test/src/main.c

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+#include <zephyr/kernel.h>
+#include <zephyr/logging/log.h>
+#include <app_version.h>
+
+LOG_MODULE_REGISTER(bl_test_app, LOG_LEVEL_INF);
+
+int main(void)
+{
+	LOG_INF("Hello World from bl_test! This is version %s", APP_VERSION_EXTENDED_STRING);
+	return 0;
+}

software/apps/bl_test/sysbuild.conf

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+SB_CONFIG_BOOTLOADER_MCUBOOT=y

software/apps/bl_test/sysbuild/bl_test.overlay

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+#include "common.dtsi"
+
+/* Application Configuration - Firmware wird in slot0_partition geschrieben */
+/ {
+	chosen {
+		zephyr,code-partition = &slot0_partition;
+		zephyr,uart-mcumgr = &cdc_acm_uart0;
+	};
+};

software/apps/bl_test/sysbuild/common.dtsi

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+/*
+ * Common Devicetree Configuration für weact_stm32g431_core
+ * - Konfiguriert einen W25Q128 Flash-Speicher auf SPI2
+ * - Konfiguriert USB-CDC für MCUMGR
+ * - Setzt den Chip Select (CS) Pin auf PA5
+ * - Weist das Label "flash1" zu
+ */
+
+/* Partitions für internes Flash (STM32G431) */
+&flash0 {
+	/delete-node/ partitions; /* Entferne die Standard-Partitionen */
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		/* MCUboot bootloader - 48 KB */
+		boot_partition: partition@0 {
+			label = "mcuboot";
+			reg = <0x00000000 0x0000C000>;
+		};
+
+		/* Slot0 partition für primäres Application Image - 80 KB (20 sectors @ 4KB) */
+		slot0_partition: partition@C000 {
+			label = "image-0";
+			reg = <0x0000C000 0x00014000>;
+		};
+	};
+};
+
+/* USB-CDC Konfiguration für MCUMGR */
+&usb {
+	status = "okay";
+	cdc_acm_uart0: cdc_acm_uart0 {
+		compatible = "zephyr,cdc-acm-uart";
+	};
+};
+
+/ {
+	chosen {
+		zephyr,uart-mcumgr = &cdc_acm_uart0;
+	};
+};
+
+&spi2 {
+	/* Definiere die Pins für SCK, MISO, MOSI auf Port B */
+	pinctrl-0 = <&spi2_sck_pb13 &spi2_miso_pb14 &spi2_mosi_pb15>;
+	pinctrl-names = "default";
+	status = "okay";
+	
+	/* === Chip Select (CS) auf PA5 gesetzt === */
+	cs-gpios = <&gpioa 5 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+
+	/* Definiere den Flash-Chip als SPI NOR Gerät */
+	flash1: flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		label = "flash1";
+
+		/* JEDEC ID für einen Winbond W25Q128 (16 MBytes) */
+		jedec-id = [ef 40 18];
+
+		/* Speichergröße in Bytes (16 MBytes) */
+		size = <DT_SIZE_M(16)>;
+
+		/* Maximale Taktfrequenz - angepasst an STM32G431 Limits */
+		spi-max-frequency = <1000000>;
+
+		/* Partitions für externes Flash */
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			/* Slot1 partition für MCUboot (sekundäres Image) - 80 KB (20 sectors @ 4KB) */
+			slot1_partition: partition@0 {
+				label = "image-1";
+				reg = <0x00000000 0x00014000>;
+			};
+
+			/* Scratch partition für MCUboot - 80 KB (20 sectors @ 4KB) */
+			scratch_partition: partition@14000 {
+				label = "scratch";
+				reg = <0x00014000 0x00014000>;
+			};
+
+			/* Speicher partition für LittleFS - ~15.83 MB */
+			storage_partition: partition@28000 {
+				label = "storage";
+				reg = <0x00028000 0x00FD8000>;
+			};
+		};
+	};
+};

software/apps/bl_test/sysbuild/mcuboot.conf

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+CONFIG_LOG=y
+CONFIG_MCUBOOT_LOG_LEVEL_INF=y
+
+# Enable UART console for MCUboot debug output
+CONFIG_UART_CONSOLE=y
+CONFIG_CONSOLE=y
+CONFIG_MCUBOOT_INDICATION_LED=y
+
+# Enable external SPI flash support
+CONFIG_SPI=y
+CONFIG_SPI_NOR=y
+CONFIG_SPI_NOR_SFDP_DEVICETREE=n
+CONFIG_FLASH=y
+CONFIG_FLASH_MAP=y
+CONFIG_GPIO=y
+
+# Add SPI NOR specific configurations - use 4KB page size (required by driver)
+CONFIG_SPI_NOR_FLASH_LAYOUT_PAGE_SIZE=4096
+CONFIG_SPI_NOR_INIT_PRIORITY=80
+
+# Set maximum image sectors manually since auto doesn't work with external flash
+CONFIG_BOOT_MAX_IMG_SECTORS_AUTO=n
+CONFIG_BOOT_MAX_IMG_SECTORS=80

software/apps/bl_test/sysbuild/mcuboot.overlay

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+#include "common.dtsi"
+
+/* MCUboot Configuration - Bootloader wird in boot_partition geschrieben */
+/ {
+	chosen {
+		zephyr,code-partition = &boot_partition;
+	};
+};