Help getting host mode running with a STM32U5 (linking issues)

[gronnmann]

Hey!
I've been trying to get the STM32U5 to work with host mode using TinyUSB. Here's my CMake:

...
if (BUILD_STM32)
    # TinyUSB support
    set(TINYUSB_DIR ${CMAKE_SOURCE_DIR}/tinyusb/src)

    set(TINYUSB_INC
        ${TINYUSB_DIR}
        ${TINYUSB_DIR}/class/hid
        ${TINYUSB_DIR}/host
#        ${TINYUSB_DIR}/portable/st/stm32_fsdev
        ${TINYUSB_DIR}/portable/dwc2/synopsys
    )

    set(TINYUSB_SRC
        ${TINYUSB_DIR}/tusb.c
        ${TINYUSB_DIR}/common/tusb_fifo.c
        ${TINYUSB_DIR}/class/hid/hid_host.c
        ${TINYUSB_DIR}/host/usbh.c
        ${TINYUSB_DIR}/host/hub.c
#        ${TINYUSB_DIR}/portable/st/stm32_fsdev/dcd_stm32_fsdev.c
        ${TINYUSB_DIR}/portable/synopsys/dwc2/hcd_dwc2.c
        ${TINYUSB_DIR}/portable/synopsys/dwc2/dwc2_common.c
    )


    add_executable(${PROJECT_NAME}
            ${APP_SRC}
            ${TINYUSB_SRC}
            Core/Src/device/input_stm.cpp
            Core/Src/device/timer_stm.cpp
            Core/Src/device/controller_driver.c
    )

    add_subdirectory(cmake/stm32cubemx)

    target_include_directories(${PROJECT_NAME} PRIVATE
            ${APP_INC}
            ${CMAKE_SOURCE_DIR}/Core/Src/device
            ${TINYUSB_INC}
    )

    target_compile_definitions(${PROJECT_NAME} PRIVATE PLATFORM_STM32=1)

    # keep your libob quirk
    list(REMOVE_ITEM CMAKE_C_IMPLICIT_LINK_LIBRARIES ob)


    target_link_libraries(${PROJECT_NAME}
            stm32cubemx
            # add other libs here, still plain
    )
endif()

Furthermore, my tusb_config.h:

/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 Ha Thach (tinyusb.org)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 */

#ifndef _TUSB_CONFIG_H_
#define _TUSB_CONFIG_H_

#ifdef __cplusplus
extern "C" {
#endif

//--------------------------------------------------------------------
// Common Configuration
//--------------------------------------------------------------------

 // TODO - my configuration
#define CFG_TUSB_MCU OPT_MCU_STM32U5
#define BOARD_DEVICE_RHPORT_SPEED OPT_MODE_HIGH_SPEED
#define CFG_TUSB_RHPORT0_MODE   OPT_MODE_HOST
// #define BOARD_DEVICE_RHPORT_NUM 1


// defined by compiler flags for flexibility
#ifndef CFG_TUSB_MCU
#error CFG_TUSB_MCU must be defined
#endif

#ifndef CFG_TUSB_OS
#define CFG_TUSB_OS           OPT_OS_NONE
#endif

#ifndef CFG_TUSB_DEBUG
#define CFG_TUSB_DEBUG        3
#endif

/* USB DMA on some MCUs can only access a specific SRAM region with restriction on alignment.
 * Tinyusb use follows macros to declare transferring memory so that they can be put
 * into those specific section.
 * e.g
 * - CFG_TUSB_MEM SECTION : __attribute__ (( section(".usb_ram") ))
 * - CFG_TUSB_MEM_ALIGN   : __attribute__ ((aligned(4)))
 */
#ifndef CFG_TUH_MEM_SECTION
#define CFG_TUH_MEM_SECTION
#endif

#ifndef CFG_TUH_MEM_ALIGN
#define CFG_TUH_MEM_ALIGN     __attribute__ ((aligned(4)))
#endif

//--------------------------------------------------------------------
// Host Configuration
//--------------------------------------------------------------------

// Enable Host stack

#define CFG_TUH_ENABLED       1

// #define CFG_TUH_MAX3421       1 // use max3421 as host controller

#if CFG_TUSB_MCU == OPT_MCU_RP2040
// #define CFG_TUH_RPI_PIO_USB   1 // use pio-usb as host controller

// host roothub port is 1 if using either pio-usb or max3421
#if (defined(CFG_TUH_RPI_PIO_USB) && CFG_TUH_RPI_PIO_USB) || (defined(CFG_TUH_MAX3421) && CFG_TUH_MAX3421)
#define BOARD_TUH_RHPORT      1
#endif
#endif

// Default is max speed that hardware controller could support with on-chip PHY
#define CFG_TUH_MAX_SPEED     BOARD_TUH_MAX_SPEED

//------------------------- Board Specific --------------------------

// RHPort number used for host can be defined by board.mk, default to port 0
#ifndef BOARD_TUH_RHPORT
#define BOARD_TUH_RHPORT      0
#endif

// RHPort max operational speed can defined by board.mk
#ifndef BOARD_TUH_MAX_SPEED
#define BOARD_TUH_MAX_SPEED   OPT_MODE_DEFAULT_SPEED
#endif

//--------------------------------------------------------------------
// Driver Configuration
//--------------------------------------------------------------------

// Size of buffer to hold descriptors and other data used for enumeration
#define CFG_TUH_ENUMERATION_BUFSIZE 256

#define CFG_TUH_HUB                 0
#define CFG_TUH_CDC                 0
#define CFG_TUH_HID                 (3*CFG_TUH_DEVICE_MAX) // typical keyboard + mouse device can have 3-4 HID interfaces


#define CFG_TUH_MSC                 0
#define CFG_TUH_VENDOR              0

// max device support (excluding hub device): 1 hub typically has 4 ports
#define CFG_TUH_DEVICE_MAX          (3*CFG_TUH_HUB + 1)

//------------- HID -------------//

#define CFG_TUH_HID_EP_BUFSIZE      64

#ifdef __cplusplus
}
#endif

#endif /* _TUSB_CONFIG_H_ */

and my controller_driver.c:

#include <stdio.h>

#include "stm32u5xx_hal.h"
#include "usbh.h"

uint32_t tusb_time_millis_api(void) {
    return HAL_GetTick();
}

void tuh_hid_mount_cb(uint8_t dev_addr, uint8_t instance, uint8_t const* desc_report, uint16_t desc_len) {
    (void)desc_report;
    (void)desc_len;
    uint16_t vid, pid;
    tuh_vid_pid_get(dev_addr, &vid, &pid);

    printf("HID device address = %d, instance = %d is mounted\r\n", dev_addr, instance);
    printf("VID = %04x, PID = %04x\r\n", vid, pid);
}

void tuh_hid_umount_cb(uint8_t dev_addr, uint8_t instance)
{
    printf("HID device address = %d, instance = %d is unmounted\r\n", dev_addr, instance);
}

void tuh_hid_report_received_cb(uint8_t dev_addr, uint8_t instance, uint8_t const *report, uint16_t len) {
    printf("Gotten report!!\r\n");
}

This however gives me a lot of linker issues, like:

: && /opt/ST/STM32CubeCLT_1.19.0/GNU-tools-for-STM32/bin/arm-none-eabi-g++ -mcpu=cortex-m33 -mfpu=fpv4-sp-d16 -mfloat-abi=hard  -Wall -fdata-sections -ffunction-sections -fno-rtti -fno-exceptions -fno-threadsafe-statics -O0 -g3 -mcpu=cortex-m33 -mfpu=fpv4-sp-d16 -mfloat-abi=hard  -T "/Users/bartosz/Programowanie/MCU/STM32U545xx_FLASH.ld" --specs=nano.specs -Wl,-Map=idontknow.map -Wl,--gc-sections -Wl,--print-memory-usage cmake/stm32cubemx/CMakeFiles/STM32_Drivers.dir/__/__/Core/Src/system_stm32u5xx.c.obj cmake/stm32cubemx/CMakeFiles/STM32_Drivers.dir/__/__/Drivers/STM32U5xx_HAL_Driver/Src/stm32u5xx_hal_cortex.c.obj cmake/stm32cubemx/CMakeFiles/STM32_Drivers.dir/__/__/Drivers/STM32U5xx_HAL_Driver/Src/stm32u5xx_hal_icache.c.obj cmake/stm32cubemx/CMakeFiles/STM32_Drivers.dir/__/__/Drivers/STM32U5xx_HAL_Driver/Src/stm32u5xx_hal.c.obj cmake/stm32cubemx/CMakeFiles/STM32_Drivers.dir/__/__/Drivers/STM32U5xx_HAL_Driver/Src/stm32u5xx_hal_i2c.c.obj cmake/stm32cubemx/CMakeFiles/STM32_Drivers.dir/__/__/Drivers/STM32U5xx_HAL_Driver/Src/stm32u5xx_hal_i2c_ex.c.obj cmake/stm32cubemx/CMakeFiles/STM32_Drivers.dir/__/__/Drivers/STM32U5xx_HAL_Driver/Src/stm32u5xx_hal_rcc.c.obj cmake/stm32cubemx/CMakeFiles/STM32_Drivers.dir/__/__/Drivers/STM32U5xx_HAL_Driver/Src/stm32u5xx_hal_rcc_ex.c.obj cmake/stm32cubemx/CMakeFiles/STM32_Drivers.dir/__/__/Drivers/STM32U5xx_HAL_Driver/Src/stm32u5xx_hal_flash.c.obj cmake/stm32cubemx/CMakeFiles/STM32_Drivers.dir/__/__/Drivers/STM32U5xx_HAL_Driver/Src/stm32u5xx_hal_flash_ex.c.obj cmake/stm32cubemx/CMakeFiles/STM32_Drivers.dir/__/__/Drivers/STM32U5xx_HAL_Driver/Src/stm32u5xx_hal_gpio.c.obj cmake/stm32cubemx/CMakeFiles/STM32_Drivers.dir/__/__/Drivers/STM32U5xx_HAL_Driver/Src/stm32u5xx_hal_dma.c.obj cmake/stm32cubemx/CMakeFiles/STM32_Drivers.dir/__/__/Drivers/STM32U5xx_HAL_Driver/Src/stm32u5xx_hal_dma_ex.c.obj cmake/stm32cubemx/CMakeFiles/STM32_Drivers.dir/__/__/Drivers/STM32U5xx_HAL_Driver/Src/stm32u5xx_hal_exti.c.obj cmake/stm32cubemx/CMakeFiles/STM32_Drivers.dir/__/__/Drivers/STM32U5xx_HAL_Driver/Src/stm32u5xx_hal_pwr.c.obj cmake/stm32cubemx/CMakeFiles/STM32_Drivers.dir/__/__/Drivers/STM32U5xx_HAL_Driver/Src/stm32u5xx_hal_pwr_ex.c.obj cmake/stm32cubemx/CMakeFiles/STM32_Drivers.dir/__/__/Drivers/STM32U5xx_HAL_Driver/Src/stm32u5xx_hal_gtzc.c.obj cmake/stm32cubemx/CMakeFiles/STM32_Drivers.dir/__/__/Drivers/STM32U5xx_HAL_Driver/Src/stm32u5xx_hal_hcd.c.obj cmake/stm32cubemx/CMakeFiles/STM32_Drivers.dir/__/__/Drivers/STM32U5xx_HAL_Driver/Src/stm32u5xx_ll_usb.c.obj cmake/stm32cubemx/CMakeFiles/STM32_Drivers.dir/__/__/Drivers/STM32U5xx_HAL_Driver/Src/stm32u5xx_hal_usart.c.obj cmake/stm32cubemx/CMakeFiles/STM32_Drivers.dir/__/__/Drivers/STM32U5xx_HAL_Driver/Src/stm32u5xx_hal_usart_ex.c.obj cmake/stm32cubemx/CMakeFiles/STM32_Drivers.dir/__/__/Drivers/STM32U5xx_HAL_Driver/Src/stm32u5xx_hal_uart_ex.c.obj cmake/stm32cubemx/CMakeFiles/STM32_Drivers.dir/__/__/Drivers/STM32U5xx_HAL_Driver/Src/stm32u5xx_hal_uart.c.obj cmake/stm32cubemx/CMakeFiles/STM32_Drivers.dir/__/__/Drivers/BSP/STM32U5xx_Nucleo/stm32u5xx_nucleo.c.obj CMakeFiles/idontknow.dir/Core/Src/app/game.cpp.obj CMakeFiles/idontknow.dir/Core/Src/app/player.cpp.obj CMakeFiles/idontknow.dir/Core/Src/app/camera.cpp.obj CMakeFiles/idontknow.dir/Core/Src/controller/ds4_controller.cpp.obj CMakeFiles/idontknow.dir/tinyusb/src/tusb.c.obj CMakeFiles/idontknow.dir/tinyusb/src/common/tusb_fifo.c.obj CMakeFiles/idontknow.dir/tinyusb/src/class/hid/hid_host.c.obj CMakeFiles/idontknow.dir/tinyusb/src/host/usbh.c.obj CMakeFiles/idontknow.dir/tinyusb/src/host/hub.c.obj CMakeFiles/idontknow.dir/tinyusb/src/portable/synopsys/dwc2/hcd_dwc2.c.obj CMakeFiles/idontknow.dir/tinyusb/src/portable/synopsys/dwc2/dwc2_common.c.obj CMakeFiles/idontknow.dir/Core/Src/device/input_stm.cpp.obj CMakeFiles/idontknow.dir/Core/Src/device/timer_stm.cpp.obj CMakeFiles/idontknow.dir/Core/Src/device/controller_driver.c.obj CMakeFiles/idontknow.dir/Core/Src/main.c.obj CMakeFiles/idontknow.dir/Core/Src/stm32u5xx_it.c.obj CMakeFiles/idontknow.dir/Core/Src/stm32u5xx_hal_msp.c.obj CMakeFiles/idontknow.dir/Core/Src/sysmem.c.obj CMakeFiles/idontknow.dir/Core/Src/syscalls.c.obj CMakeFiles/idontknow.dir/startup_stm32u545xx.s.obj -o idontknow.elf  -lm && :
/opt/ST/STM32CubeCLT_1.19.0/GNU-tools-for-STM32/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld: CMakeFiles/idontknow.dir/tinyusb/src/host/usbh.c.obj: in function `tuh_rhport_init':
/Users/bartosz/Programowanie/MCU/tinyusb/src/host/usbh.c:522:(.text.tuh_rhport_init+0x194): undefined reference to `hcd_init'
/opt/ST/STM32CubeCLT_1.19.0/GNU-tools-for-STM32/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld: /Users/bartosz/Programowanie/MCU/tinyusb/src/host/usbh.c:523:(.text.tuh_rhport_init+0x1ca): undefined reference to `hcd_int_enable'
/opt/ST/STM32CubeCLT_1.19.0/GNU-tools-for-STM32/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld: CMakeFiles/idontknow.dir/tinyusb/src/host/usbh.c.obj: in function `usbh_device_close':
/Users/bartosz/Programowanie/MCU/tinyusb/src/host/usbh.c:348:(.text.tuh_task_ext+0x1ba): undefined reference to `hcd_device_close'
/opt/ST/STM32CubeCLT_1.19.0/GNU-tools-for-STM32/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld: CMakeFiles/idontknow.dir/tinyusb/src/host/usbh.c.obj: in function `usbh_setup_send':
/Users/bartosz/Programowanie/MCU/tinyusb/src/host/usbh.c:340:(.text.tuh_control_xfer+0x132): undefined reference to `hcd_setup_send'
/opt/ST/STM32CubeCLT_1.19.0/GNU-tools-for-STM32/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld: /Users/bartosz/Programowanie/MCU/tinyusb/src/host/usbh.c:340:(.text.tuh_control_xfer+0x1bc): undefined reference to `hcd_setup_send'
/opt/ST/STM32CubeCLT_1.19.0/GNU-tools-for-STM32/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld: /Users/bartosz/Programowanie/MCU/tinyusb/src/host/usbh.c:340:(.text.usbh_control_xfer_cb+0xc6): undefined reference to `hcd_setup_send'
/opt/ST/STM32CubeCLT_1.19.0/GNU-tools-for-STM32/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld: CMakeFiles/idontknow.dir/tinyusb/src/host/usbh.c.obj: in function `usbh_control_xfer_cb':
/Users/bartosz/Programowanie/MCU/tinyusb/src/host/usbh.c:841:(.text.usbh_control_xfer_cb+0x1cc): undefined reference to `hcd_edpt_xfer'
/opt/ST/STM32CubeCLT_1.19.0/GNU-tools-for-STM32/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld: /Users/bartosz/Programowanie/MCU/tinyusb/src/host/usbh.c:856:(.text.usbh_control_xfer_cb+0x28a): undefined reference to `hcd_edpt_xfer'
/opt/ST/STM32CubeCLT_1.19.0/GNU-tools-for-STM32/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld: CMakeFiles/idontknow.dir/tinyusb/src/host/usbh.c.obj: in function `tuh_edpt_abort_xfer':
/Users/bartosz/Programowanie/MCU/tinyusb/src/host/usbh.c:917:(.text.tuh_edpt_abort_xfer+0x6c): undefined reference to `hcd_edpt_abort_xfer'
/opt/ST/STM32CubeCLT_1.19.0/GNU-tools-for-STM32/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld: /Users/bartosz/Programowanie/MCU/tinyusb/src/host/usbh.c:925:(.text.tuh_edpt_abort_xfer+0xde): undefined reference to `hcd_edpt_abort_xfer'
/opt/ST/STM32CubeCLT_1.19.0/GNU-tools-for-STM32/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld: CMakeFiles/idontknow.dir/tinyusb/src/host/usbh.c.obj: in function `usbh_int_set':
/Users/bartosz/Programowanie/MCU/tinyusb/src/host/usbh.c:950:(.text.usbh_int_set+0x16): undefined reference to `hcd_int_enable'
/opt/ST/STM32CubeCLT_1.19.0/GNU-tools-for-STM32/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld: /Users/bartosz/Programowanie/MCU/tinyusb/src/host/usbh.c:952:(.text.usbh_int_set+0x22): undefined reference to `hcd_int_disable'
/opt/ST/STM32CubeCLT_1.19.0/GNU-tools-for-STM32/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld: CMakeFiles/idontknow.dir/tinyusb/src/host/usbh.c.obj: in function `usbh_edpt_control_open':
/Users/bartosz/Programowanie/MCU/tinyusb/src/host/usbh.c:1057:(.text.usbh_edpt_control_open+0x54): undefined reference to `hcd_edpt_open'
/opt/ST/STM32CubeCLT_1.19.0/GNU-tools-for-STM32/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld: CMakeFiles/idontknow.dir/tinyusb/src/host/usbh.c.obj: in function `tuh_edpt_open':
/Users/bartosz/Programowanie/MCU/tinyusb/src/host/usbh.c:1062:(.text.tuh_edpt_open+0x60): undefined reference to `hcd_edpt_open'
/opt/ST/STM32CubeCLT_1.19.0/GNU-tools-for-STM32/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld: CMakeFiles/idontknow.dir/tinyusb/src/host/usbh.c.obj: in function `usbh_device_close':
/Users/bartosz/Programowanie/MCU/tinyusb/src/host/usbh.c:348:(.text.process_removed_device+0xbe): undefined reference to `hcd_device_close'
/opt/ST/STM32CubeCLT_1.19.0/GNU-tools-for-STM32/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld: CMakeFiles/idontknow.dir/tinyusb/src/host/usbh.c.obj: in function `enum_new_device':
/Users/bartosz/Programowanie/MCU/tinyusb/src/host/usbh.c:1436:(.text.enum_new_device+0x5c): undefined reference to `hcd_port_connect_status'
/opt/ST/STM32CubeCLT_1.19.0/GNU-tools-for-STM32/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld: /Users/bartosz/Programowanie/MCU/tinyusb/src/host/usbh.c:1443:(.text.enum_new_device+0x80): undefined reference to `hcd_port_reset'
/opt/ST/STM32CubeCLT_1.19.0/GNU-tools-for-STM32/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld: /Users/bartosz/Programowanie/MCU/tinyusb/src/host/usbh.c:1445:(.text.enum_new_device+0x90): undefined reference to `hcd_port_reset_end'
/opt/ST/STM32CubeCLT_1.19.0/GNU-tools-for-STM32/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld: /Users/bartosz/Programowanie/MCU/tinyusb/src/host/usbh.c:1447:(.text.enum_new_device+0x9a): undefined reference to `hcd_port_connect_status'
/opt/ST/STM32CubeCLT_1.19.0/GNU-tools-for-STM32/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld: /Users/bartosz/Programowanie/MCU/tinyusb/src/host/usbh.c:1453:(.text.enum_new_device+0xb8): undefined reference to `hcd_port_speed_get'
/opt/ST/STM32CubeCLT_1.19.0/GNU-tools-for-STM32/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld: CMakeFiles/idontknow.dir/tinyusb/src/host/usbh.c.obj: in function `usbh_device_close':
/Users/bartosz/Programowanie/MCU/tinyusb/src/host/usbh.c:348:(.text.process_enumeration+0x39a): undefined reference to `hcd_device_close'
/opt/ST/STM32CubeCLT_1.19.0/GNU-tools-for-STM32/bin/../lib/gcc/arm-none-eabi/13.3.1/../../../../arm-none-eabi/bin/ld: CMakeFiles/idontknow.dir/Core/Src/stm32u5xx_it.c.obj: in function `USB_IRQHandler':
/Users/bartosz/Programowanie/MCU/Core/Src/stm32u5xx_it.c:226:(.text.USB_IRQHandler+0x8): undefined reference to `hcd_int_handler'
Memory region         Used Size  Region Size  %age Used
             RAM:        4120 B       256 KB      1.57%
           SRAM4:           0 B        16 KB      0.00%
           FLASH:       48340 B       512 KB      9.22%
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.

I would appreciate all help! Thank you!

[HiFiPhile]

You also need to define which MCU you are using:

tinyusb/src/common/tusb_mcu.h

Line 321 in 38255ff

#if defined(STM32U595xx) || defined(STM32U599xx) || defined(STM32U5A5xx) || defined(STM32U5A9xx) || \

[gronnmann]

Thank you, setting that removed some of the errors.

It however seems there's no host driver for my MCU (STM32U545, uses sm_fsdev), even though it supports host mode. I guess I'll have to just use their HAL.