STM32F767ZI 开发板搭配 FreeRTOS + USB_OTG MSC（USB 大容量存储类），更新 CubeIDE 后无法工作！
我有一段非常简单的代码，在 CubeIDE V1.8.0 中能正常运行，但同样的代码在 CubeIDE V1.11.2 中完全无法使用。
void Start_USB_Task(void const *argument) {
/* USER CODE BEGIN Start_USB_Task */
uint8_t sflag = 1;
uint8_t rflag = 1;
uint8_t dflag = 1;
uint8_t iflag = 1;
/* Infinite loop */
for (;;) {
// MX_USB_HOST_Process();
switch (Appli_state) {
case APPLICATION_IDLE:
HAL_GPIO_WritePin(LD2_GPIO_Port, LD2_Pin, RESET); // Blue
HAL_GPIO_TogglePin(LD1_GPIO_Port, LD1_Pin); // Green
if (iflag == 1) {
printf("Removed a USB from STM32. \r\n");
iflag = 0;
}
osDelay(100);
break;
case APPLICATION_START:
dflag = 1;
rflag = 1;
iflag = 1;
if (f_mount(&USBHFatFS, (const TCHAR*) USBHPath, 0) == FR_OK) {
HAL_GPIO_WritePin(LD1_GPIO_Port, LD1_Pin, RESET);
HAL_GPIO_WritePin(LD3_GPIO_Port, LD3_Pin, RESET);
if (sflag == 1) {
printf("APPLICATION is START. \r\n");
sflag = 0;
}
}
break;
case APPLICATION_READY:
dflag = 1;
sflag = 1;
iflag = 1;
if (rflag == 1) {
printf("APPLICATION is READY. \r\n");
rflag = 0;
HAL_GPIO_WritePin(LD2_GPIO_Port, LD2_Pin, SET); // Blue
if (f_mount(&USBHFatFS, (const TCHAR*) USBHPath, 0) == FR_OK) {
printf("USB is mounted success! \r\n");
}
if (f_mkdir((const TCHAR*) "ADC") == FR_OK) {
// if (f_chdir("ADC") == FR_OK) {
printf("Falder 'ADC' is CREATED! \r\n");
// }
}else{
printf("Falder 'ADC' is NOT created! \r\n");
}
if (f_open(&USBHFile, (const TCHAR*) "ADC.TXT",
FA_WRITE | FA_OPEN_APPEND) == FR_OK) {
sprintf(hold, "%s", "ADC VALUES NOT PRESENT! \r\n");
RES = f_write(&USBHFile, (const void*) hold, strlen(hold),
&Byteswritten);
if (RES != FR_OK || Byteswritten == 0) {
// return 0;
} else {
for (int n = 0; n < 3; n++) {
HAL_GPIO_TogglePin(LD3_GPIO_Port, LD3_Pin); // Red
osDelay(250);
}
}
}else{
printf("File is NOT created! \r\n");
}
f_close(&USBHFile);
}
break;
case APPLICATION_DISCONNECT:
sflag = 1;
rflag = 1;
iflag = 1;
if (dflag == 1) {
f_mount(NULL, (TCHAR const*) "", 0); // Then flash is removed
printf("APPLICATION is DISCONNECT. \r\n");
dflag = 0;
}
HAL_GPIO_WritePin(LD2_GPIO_Port, LD2_Pin, RESET); // Blue
HAL_GPIO_TogglePin(LD3_GPIO_Port, LD3_Pin); // Red
osDelay(100);
break;
default:
printf("Error! operator is not correct \r\n");
}
}
/* USER CODE END Start_USB_Task */
}
USBH_USERPROCESS[color=rgba(0, 0, 0, 0.85)] 函数无法获取状态
"Case host_user_class_active: Appli_state = Application_Rready;
如果插入 U 盘，该函数就能获取到状态。
case HOST_USER_CONNECTION:
Appli_state = APPLICATION_START;
break;
如果拔掉 U 盘，该函数也能获取到状态。
CASE HOST_USER_DISCONNECTION:
Appli_state = Application_disConnect;
Break;
但正如我上面所写的，USBH_USERPROCESS 函数始终无法获取到状态。
"Case host_user_class_active:
Appli_state = Application_Rriedy;
Break;
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