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