88 lines
4.3 KiB
Plaintext
88 lines
4.3 KiB
Plaintext
/**
|
|
@page MSC_Standalone USB Device Mass Storage (MSC) example
|
|
|
|
@verbatim
|
|
******************** (C) COPYRIGHT 2016 STMicroelectronics *******************
|
|
* @file USB_Device/MSC_Standalone/readme.txt
|
|
* @author MCD Application Team
|
|
* @brief Description of the USB Device MSC example.
|
|
******************************************************************************
|
|
* @attention
|
|
*
|
|
* <h2><center>© Copyright (c) 2016 STMicroelectronics.
|
|
* All rights reserved.</center></h2>
|
|
*
|
|
* This software component is licensed by ST under Ultimate Liberty license
|
|
* SLA0044, the "License"; You may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at:
|
|
* www.st.com/SLA0044
|
|
*
|
|
******************************************************************************
|
|
@endverbatim
|
|
|
|
@par Example Description
|
|
|
|
Use of the USB device application based on the Mass Storage Class (MSC).
|
|
|
|
This is a typical example on how to use the STM32F1xx USB Device peripheral to communicate with a PC
|
|
Host using the Bulk Only Transfer (BOT) and Small Computer System Interface (SCSI) transparent commands,
|
|
while the microSD card is used as storage media. The STM32 MCU is enumerated as a MSC device using the
|
|
native PC Host MSC driver to which the STM3210C-EVAL board is connected.
|
|
|
|
At the beginning of the main program the HAL_Init() function is called to reset all the peripherals,
|
|
initialize the Flash interface and the systick. The user is provided with the SystemClock_Config()
|
|
function to configure the system clock (SYSCLK) to run at 72 MHz. The Full Speed (FS) USB module uses
|
|
internally a 48-MHz clock, which is generated from an integrated PLL.
|
|
|
|
When the application is started, the user has just to plug the USB cable into a PC host and the device
|
|
is automatically detected. A new removable drive appears in the system window and write/read/format
|
|
operations can be performed as with any other removable drive.
|
|
|
|
@note The application needs to ensure that the SysTick time base is set to 1 millisecond
|
|
to have correct HAL configuration.
|
|
|
|
@note Care must be taken when using HAL_Delay(), this function provides accurate delay (in milliseconds)
|
|
based on variable incremented in SysTick ISR. This implies that if HAL_Delay() is called from
|
|
a peripheral ISR process, then the SysTick interrupt must have higher priority (numerically lower)
|
|
than the peripheral interrupt. Otherwise the caller ISR process will be blocked.
|
|
To change the SysTick interrupt priority you have to use HAL_NVIC_SetPriority() function.
|
|
|
|
@par Directory contents
|
|
|
|
- USB_Device/MSC_Standalone/Src/main.c Main program
|
|
- USB_Device/MSC_Standalone/Src/system_stm32f1xx.c STM32F1xx system clock configuration file
|
|
- USB_Device/MSC_Standalone/Src/stm32f1xx_it.c Interrupt handlers
|
|
- USB_Device/MSC_Standalone/Src/usbd_conf.c General low level driver configuration
|
|
- USB_Device/MSC_Standalone/Src/usbd_desc.c USB device MSC descriptor
|
|
- USB_Device/MSC_Standalone/Src/ubsd_storage.c Media Interface Layer
|
|
- USB_Device/MSC_Standalone/Inc/main.h Main program header file
|
|
- USB_Device/MSC_Standalone/Inc/stm32f1xx_it.h Interrupt handlers header file
|
|
- USB_Device/MSC_Standalone/Inc/stm32f1xx_hal_conf.h HAL configuration file
|
|
- USB_Device/MSC_Standalone/Inc/usbd_conf.h USB device driver Configuration file
|
|
- USB_Device/MSC_Standalone/Inc/usbd_desc.h USB device MSC descriptor header file
|
|
- USB_Device/MSC_Standalone/Inc/ubsd_storage.h Media Interface Layer header file
|
|
|
|
|
|
@par Hardware and Software environment
|
|
|
|
- This example runs on STM32F1xx devices.
|
|
|
|
- This example has been tested with a STM3210C-EVAL board embedding
|
|
a STM32F107x device and can be easily tailored to any other supported device
|
|
and development board.
|
|
|
|
- STM3210C-EVAL Set-up
|
|
- Insert a microSD card into the STM3210C-EVAL uSD slot (CN16)
|
|
- Connect the STM3210C-EVAL board to the PC through 'USB Type micro A-Male
|
|
to A-Male' cable to the connector CN2
|
|
|
|
@par How to use it ?
|
|
|
|
In order to make the program work, you must do the following:
|
|
- Open your preferred toolchain
|
|
- Rebuild all files and load your image into target memory
|
|
- Run the example
|
|
|
|
* <h3><center>© COPYRIGHT STMicroelectronics</center></h3>
|
|
*/
|