STM32 USB和PC机通信

1万 · 2017-2-26 19:31

跪求大牛知道STM32 USB和PC机通信，将数据发送到上位机。

1万 · 2017-2-26 19:33

这个在网上搜一搜

1万 · 2017-2-26 19:34

有很多的现成的例程吧。

1万 · 2017-2-26 19:36

官方自带的 usb cdc

1万 · 2017-2-26 19:37

官方应该有例程的

1万 · 2017-2-26 19:38

但程序看不太懂，怎么实现数据在上位机上实时显示，并能检测到发送速率，跪求这方面资料。

1万 · 2017-2-26 19:39

官方的最简单了，看不懂的话，这里的恐怕。。。

2万 · 2017-2-26 19:40

custom hid例程
免驱动

1万 · 2017-2-26 19:42

看相关头文件里的说明，不要只看代码，一定看说明。

只看该作者 · 2017-2-26 19:47

研究下STM32 USB 的CDC

1万 · 2017-2-26 19:49

小数据量有 HID

中数据量用 CDC

大数据量用BULK

1万 · 2017-2-26 19:51

本版置顶帖：官网STM32 USB资料汇总 + USB培训资料

1万 · 2017-2-26 19:53

我觉得最简单是USB虚拟串口（VCP），上位机就用串口调试工具就ok了

1万 · 2017-2-26 19:54

请问用虚拟串口向上位机发送数据的速率多大呢，我发的才10k左右啊，不明白为什么？

1万 · 2017-2-26 19:55

/**
  ******************************************************************************
  * @file USB_Host/FWupgrade_Standalone/Src/main.c
  * @author  MCD Application Team
  * @version V1.0.1
  * @date 26-February-2014
  * @brief 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****/

1万 · 2017-2-26 19:57

手把手的看人家做，另外不会的还可以问问，这样才学的会啊，这都搞的太复杂了。

2万 · 2017-2-26 19:58

用CubeMx 可以配置出自己想要的USB设备，关于USB的源码资料也不少，拿来就直接用。

1万 · 2017-2-26 20:01

嗯，那我按大家的说法挨个排查一下，先结贴啦，谢谢哈

只看该作者 · 2017-2-27 21:33

最简单是USB虚拟串口

只看该作者 · 2017-2-28 21:58

U盘时USB接口吧，速度多快

STM32 USB和PC机通信

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