Posted on November 25, 2017 at 03:54
Hi mass storage is being implemented.
Nucleo-F207G is being tested.
en.stm32cubef2 \ STM32Cube_FW_F2_V1.7.0 \ Projects \ STM32F207ZG-Nucleo \ Applications \ FatFs \ FatFs_USBDisk
The sample is usb-detectable without any problem, and the txt file can be written well.If you design code with cube as below, you can not detect usb.
If you create a project with cube, you have to change heap / stack size.
Appli_State value should be recognized as 1, even if you connect usb stick, it is still 0;
I need to solve the problem, but I do not have enough time.
Below is main.c / usb_host.c source.
Have a great weekend!
main.c
---------------
void FileReadWrite(void)
{
FRESULT res;
uint32_t byteswritten;
uint8_t wtext[] = ''This is STM32 working with FatFs'';
//printf(''in MSC_Application ...usbh path %s \r\n'',USBH_Path);
if(f_mount(&USBDISKFatFs, (TCHAR const*)USBHPath, 0) != FR_OK)
{
//printf(''f_mount fail ...\r\n''); Error_Handler();
}/* FatFs Initialization Error */
else
{
//printf(''mount ok...\r\n'');
if(f_open(&MyFile, ''STM32.TXT'', FA_CREATE_ALWAYS | FA_WRITE) != FR_OK)
{
//printf(''f_open fail \r\n'');Error_Handler();
}
else
{
//printf(''f_write ...\r\n'');
res = f_write(&MyFile, wtext, sizeof(wtext), (void *)&byteswritten);
if((byteswritten == 0) || (res != FR_OK))
{ Error_Handler(); }else
{
f_close(&MyFile);
printf(''success....\r\n'');
}
}
}
}
while (1)
{
/* USER CODE END WHILE */
MX_USB_HOST_Process();
/* USER CODE BEGIN 3 */ if(Appli_state==APPLICATION_START)
{
FileReadWrite();
Appli_state = APPLICATION_IDLE;
}
else if(Appli_state==APPLICATION_IDLE)
{
}
}
usb_host.c
----------------
void MX_USB_HOST_Init(void)
{
USBH_Init(&hUsbHostFS, USBH_UserProcess, HOST_FS);
USBH_RegisterClass(&hUsbHostFS, USBH_MSC_CLASS);
USBH_Start(&hUsbHostFS);
}
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_IDLE;
f_mount(NULL, (TCHAR const*)'''', 0);
break;
case HOST_USER_CLASS_ACTIVE:
Appli_state = APPLICATION_START;
break;
case HOST_USER_CONNECTION:
break;
default:
break;
}
/* USER CODE END 2 */
}
