Add new STM32U0 family and new target Nucleo-U083RC (#445)

* Add & prepare STM32U0 HALs

* add first clock for stm32u083

* add stm32u083xc target

* add Nucleo-U083RC as new target

* add necessary files for basic stm32u0 port

* edit STM files for stm32u0

* update clock

* update Vector Num

* update timer to TIM2 as OS timer

* fix app start

* edit pin maps & gpio irq

* update startup file

* add ADC and DAC

* add PWM

* add additional APIs

* Necessary fixes

* Fix FlashIAP

* Add initial SPI and I2C

* initial USB modification

* I2C remove

* Some fixes

* fix wrong symbol for stylecheck

* add basic HSE clock settings

* Copyright

* fix DMA files

* remove timing algo

* add macro ARDUINO_UNO

* add wmi to requirements for usb tests

* Fix clock limitation sentence

---------

Co-authored-by: Jan Kamidra <[email protected]>

Author: JohnK1987

targets/TARGET_STM/CMakeLists.txt

@@ -15,6 +15,7 @@ add_subdirectory(TARGET_STM32L0 EXCLUDE_FROM_ALL)
 add_subdirectory(TARGET_STM32L1 EXCLUDE_FROM_ALL)
 add_subdirectory(TARGET_STM32L4 EXCLUDE_FROM_ALL)
 add_subdirectory(TARGET_STM32L5 EXCLUDE_FROM_ALL)
+add_subdirectory(TARGET_STM32U0 EXCLUDE_FROM_ALL)
 add_subdirectory(TARGET_STM32U5 EXCLUDE_FROM_ALL)
 add_subdirectory(TARGET_STM32WB EXCLUDE_FROM_ALL)
 add_subdirectory(TARGET_STM32WL EXCLUDE_FROM_ALL)

targets/TARGET_STM/TARGET_STM32U0/CMakeLists.txt

@@ -0,0 +1,27 @@
+# Copyright (c) 2025 Jan Kamidra
+# SPDX-License-Identifier: Apache-2.0
+
+add_subdirectory(STM32Cube_FW EXCLUDE_FROM_ALL)
+add_subdirectory(TARGET_STM32U083xC EXCLUDE_FROM_ALL)
+
+add_library(mbed-stm32u0 INTERFACE)
+
+target_sources(mbed-stm32u0
+    INTERFACE
+    clock_cfg/system_clock.c
+    analogin_device.c
+    analogout_device.c
+    flash_api.c
+    gpio_irq_device.c
+    i2c_device.c
+    spi_api.c
+    pwmout_device.c
+    serial_device.c
+)
+
+target_include_directories(mbed-stm32u0
+    INTERFACE
+        .
+)
+
+target_link_libraries(mbed-stm32u0 INTERFACE mbed-stm mbed-stm32u0cube-fw)

targets/TARGET_STM/TARGET_STM32U0/PeripheralNames.h

@@ -0,0 +1,135 @@
+/* mbed Microcontroller Library
+ * SPDX-License-Identifier: BSD-3-Clause
+ ******************************************************************************
+ *
+ * Copyright (c) 2015-2025 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ *                        opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+ */
+
+#ifndef MBED_PERIPHERALNAMES_H
+#define MBED_PERIPHERALNAMES_H
+
+#include "cmsis.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+    ADC_1 = (int)ADC1_BASE,
+} ADCName;
+
+typedef enum {
+    DAC_1 = (int)DAC1_BASE,
+} DACName;
+
+typedef enum {
+    UART_1 = (int)USART1_BASE,
+    UART_2 = (int)USART2_BASE,
+#if USART3_BASE
+    UART_3 = (int)USART3_BASE,
+#endif
+#if USART4_BASE
+    UART_4 = (int)USART4_BASE,
+#endif
+    LPUART_1 = (int)LPUART1_BASE,
+#if LPUART2_BASE
+	LPUART_2 = (int)LPUART2_BASE,
+#endif
+#if LPUART3_BASE
+	LPUART_3 = (int)LPUART3_BASE,
+#endif
+} UARTName;
+
+#define DEVICE_SPI_COUNT 3
+typedef enum {
+    SPI_1 = (int)SPI1_BASE,
+#if SPI2_BASE
+    SPI_2 = (int)SPI2_BASE,
+#endif
+#if SPI3_BASE
+    SPI_3 = (int)SPI3_BASE,
+#endif
+} SPIName;
+
+typedef enum {
+    I2C_1 = (int)I2C1_BASE,
+#if I2C3_BASE
+    I2C_2 = (int)I2C2_BASE,
+#endif
+#if I2C3_BASE
+    I2C_3 = (int)I2C3_BASE,
+#endif
+#if I2C4_BASE
+    I2C_4 = (int)I2C4_BASE,
+#endif
+} I2CName;
+
+typedef enum {
+#if TIM1_BASE
+    PWM_1  = (int)TIM1_BASE,
+#endif
+#if TIM2_BASE
+    PWM_2  = (int)TIM2_BASE,
+#endif
+#if TIM3_BASE
+    PWM_3  = (int)TIM3_BASE,
+#endif
+#if TIM4_BASE
+    PWM_4  = (int)TIM4_BASE,
+#endif
+#if TIM5_BASE
+    PWM_5  = (int)TIM5_BASE,
+#endif
+#if TIM6_BASE
+    PWM_6  = (int)TIM6_BASE,
+#endif
+#if TIM7_BASE
+    PWM_7  = (int)TIM7_BASE,
+#endif
+#if TIM8_BASE
+    PWM_8  = (int)TIM8_BASE,
+#endif
+#if TIM9_BASE
+    PWM_9  = (int)TIM9_BASE,
+#endif
+#if TIM10_BASE
+    PWM_10 = (int)TIM10_BASE,
+#endif
+#if TIM11_BASE
+    PWM_11 = (int)TIM11_BASE,
+#endif
+#if TIM12_BASE
+    PWM_12 = (int)TIM12_BASE,
+#endif
+#if TIM13_BASE
+    PWM_13 = (int)TIM13_BASE,
+#endif
+#if TIM14_BASE
+    PWM_14 = (int)TIM14_BASE,
+#endif
+#if TIM15_BASE
+    PWM_15 = (int)TIM15_BASE,
+#endif
+#if TIM16_BASE
+    PWM_16 = (int)TIM16_BASE,
+#endif
+} PWMName;
+
+typedef enum {
+    USB_FS = (int)USB_DRD_BASE
+} USBName;
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif