I have tried to get the USB FatFS MSC example for Nucleo 144 - STM32F429ZI working. After about 10 day I have succeeded, but I had to change the MX_DriverVbusFS in the usbh_platform.c file as follows:
original code:
void MX_DriverVbusFS(uint8_t state)
{
uint8_t data = state;
/* USER CODE BEGIN PREPARE_GPIO_DATA_VBUS_FS */
if(state == 0)
{
/* Drive high Charge pump */
data = GPIO_PIN_SET;
}
else
{
/* Drive low Charge pump */
data = GPIO_PIN_RESET;
}
/* USER CODE END PREPARE_GPIO_DATA_VBUS_FS */
HAL_GPIO_WritePin(GPIOG,GPIO_PIN_6,(GPIO_PinState)data);
}
WORKING code :
void MX_DriverVbusFS(uint8_t state)
{
uint8_t data = state;
/* USER CODE BEGIN PREPARE_GPIO_DATA_VBUS_FS */
if(state == 0)
{
/* Drive high Charge pump */
data = GPIO_PIN_RESET;
}
else
{
/* Drive low Charge pump */
data = GPIO_PIN_SET;
}
/* USER CODE END PREPARE_GPIO_DATA_VBUS_FS */
HAL_GPIO_WritePin(GPIOG,GPIO_PIN_6,(GPIO_PinState)data);
}
I do not understand: the comment in the code says:
/**
* @brief Drive VBUS.
* @param state : VBUS state
* This parameter can be one of the these values:
* - 0 : VBUS Active
* - 1 : VBUS Inactive
*/
which seems to be the NOT working code. Looking at the schematics, imo, an active high signal on USB Power Switch ON will put voltage on the VBUS. What am I missing, or is the comment in the code in error?
Henk
