STM32 USB和上位机传输数据

/**

  ******************************************************************************

  * [url=home.php?mod=space&uid=288409]@file[/url]    USB_Host/FWupgrade_Standalone/Src/main.c

  * [url=home.php?mod=space&uid=187600]@author[/url]  MCD Application Team

  * [url=home.php?mod=space&uid=895143]@version[/url] V1.0.1

  * [url=home.php?mod=space&uid=212281]@date[/url]    26-February-2014

  * [url=home.php?mod=space&uid=247401]@brief[/url]   USB host Firmware Upgrade demo main file

  ******************************************************************************

  * @attention

  *

  * <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2>

  *

  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");

  * You may not use this file except in compliance with the License.

  * You may obtain a copy of the License at:

  *

  *        http://www.st.com/software_license_agreement_liberty_v2

  *

  * Unless required by applicable law or agreed to in writing, software 

  * distributed under the License is distributed on an "AS IS" BASIS, 

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  *

  ******************************************************************************

  */



/* Includes ------------------------------------------------------------------*/

#include "main.h"



/* Private typedef -----------------------------------------------------------*/

/* Private define ------------------------------------------------------------*/

/* Private macro -------------------------------------------------------------*/

/* Private variables ---------------------------------------------------------*/

USBH_HandleTypeDef hUSBHost;

FW_ApplicationTypeDef Appli_state = APPLICATION_DISCONNECT;

uint32_t JumpAddress;

pFunction Jump_To_Application;



/* Private function prototypes -----------------------------------------------*/

static void SystemClock_Config(void);

static void USBH_UserProcess(USBH_HandleTypeDef *phost, uint8_t id);

static void FW_InitApplication(void);



/* Private functions ---------------------------------------------------------*/



/**

  * @brief  Main program

  * @param  None

  * @retval None

  */

int main(void)

{

  /* Configure KEY Button */

  BSP_PB_Init(BUTTON_KEY, BUTTON_MODE_GPIO); 

  

  /* Unlock the Flash to enable the flash control register access */ 

  FLASH_If_FlashUnlock();

  

  /* Test if User button on the STM324xG_EVAL is pressed */

  if (BSP_PB_GetState(BUTTON_KEY) != GPIO_PIN_RESET)

  {

    /* Check Vector Table: Test if user code is programmed starting from address 

    "APPLICATION_ADDRESS" */

    if ((((*(__IO uint32_t*)APPLICATION_ADDRESS) & 0xFF000000 ) == 0x20000000) || \

      (((*(__IO uint32_t*)APPLICATION_ADDRESS) & 0xFF000000 ) == 0x10000000))

    {

      /* Jump to user application */

      JumpAddress = *(__IO uint32_t*) (APPLICATION_ADDRESS + 4);

      Jump_To_Application = (pFunction) JumpAddress;

      /* Initialize user application's Stack Pointer */

      __set_MSP(*(__IO uint32_t*) APPLICATION_ADDRESS);

      Jump_To_Application();

    }

  }

  

    /* STM32F4xx HAL library initialization:

       - Configure the Flash prefetch, instruction and Data caches

       - Configure the Systick to generate an interrupt each 1 msec

       - Set NVIC Group Priority to 4

       - Global MSP (MCU Support Package) initialization

     */

  HAL_Init();

  

  /* Configure the system clock to 168 Mhz */

  SystemClock_Config();

  

  /* Init FW upgrade Application */

  FW_InitApplication();

  

  /* Init Host Library */

  USBH_Init(&hUSBHost, USBH_UserProcess, 0);

  

  /* Add Supported Class */

  USBH_RegisterClass(&hUSBHost, USBH_MSC_CLASS);

  

  /* Start Host Process */

  USBH_Start(&hUSBHost);

  

  /* Run Application (Blocking mode)*/

  while (1)

  {

    /* USB Host Background task */

    USBH_Process(&hUSBHost);

    

    /* FW Menu Process */

    FW_UPGRADE_Process();

  } 

}



/**

  * @brief  FW application Init.

  * @param  None

  * @retval None

  */

static void FW_InitApplication(void)

{

  /* Configure the LEDs */

  BSP_LED_Init(LED3);

  BSP_LED_Init(LED4);

}



/**

  * @brief  User Process

  * @param  phost: Host Handle

  * @param  id: Host Library user message ID

  * @retval None

  */

static void USBH_UserProcess(USBH_HandleTypeDef *phost, uint8_t id)

{  

  switch(id)

  { 

  case HOST_USER_SELECT_CONFIGURATION:

    break;

    

  case HOST_USER_DISCONNECTION:

    Appli_state = APPLICATION_DISCONNECT;

    break;

    

  case HOST_USER_CLASS_ACTIVE:

    Appli_state = APPLICATION_READY;

    break;

    

  case HOST_USER_CONNECTION:

    Appli_state = APPLICATION_CONNECT;    

    break;

     

  default:

    break; 

  }

}



/**

  * @brief  System Clock Configuration

  *         The system Clock is configured as follow : 

  *            System Clock source            = PLL (HSE)

  *            SYSCLK(Hz)                     = 168000000

  *            HCLK(Hz)                       = 168000000

  *            AHB Prescaler                  = 1

  *            APB1 Prescaler                 = 4

  *            APB2 Prescaler                 = 2

  *            HSE Frequency(Hz)              = 8000000

  *            PLL_M                          = 8

  *            PLL_N                          = 336

  *            PLL_P                          = 2

  *            PLL_Q                          = 7

  *            VDD(V)                         = 3.3

  *            Main regulator output voltage  = Scale1 mode

  *            Flash Latency(WS)              = 5

  * @param  None

  * @retval None

  */

static void SystemClock_Config(void)

{

  RCC_ClkInitTypeDef RCC_ClkInitStruct;

  RCC_OscInitTypeDef RCC_OscInitStruct;

  

  /* Enable HSE Oscillator and activate PLL with HSE as source */

  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;

  RCC_OscInitStruct.HSEState = RCC_HSE_ON;

  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;

  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;

  RCC_OscInitStruct.PLL.PLLM = 8;

  RCC_OscInitStruct.PLL.PLLN = 336;

  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;

  RCC_OscInitStruct.PLL.PLLQ = 7;

  HAL_RCC_OscConfig(&RCC_OscInitStruct);

  

  

  /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 

  clocks dividers */

  RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);

  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;

  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;

  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;  

  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;  

  HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);

}



#ifdef  USE_FULL_ASSERT

/**

  * @brief  Reports the name of the source file and the source line number

  *   where the assert_param error has occurred.

  * @param  file: pointer to the source file name

  * @param  line: assert_param error line source number

  * @retval None

  */

void assert_failed(uint8_t* file, uint32_t line)

{

  /* User can add his own implementation to report the file name and line number,

     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */



  /* Infinite loop */

  while (1)

  {}

}

#endif



/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/