Hi, was wondering if someone can point me in the right direction on an issue I've been battling with regarding USB device enumeration.
I'm using Cube FW_H5_V1.4.0 > Projects > NUCLEO-H563ZI > Applications > USBX > UX_Device_HID_CDC_ACM for STM32Cube IDE as the starting point.
Closest example I could find but have had to make significant changes as I'm trying to create a bare metal version, don't want HID and of course am using a different micro on the STM32H573I-DK board.
I've got the code running and get the "USB device not recognised" popup on Windows when I connect the board. I'm hitting a breakpoint in the HAL_PCDResetCallback function but HAL_PCD_SetupStageCallback() never runs to start the first SETUP packet. I can see that bits 10 and 11 are set in the ISTR register so it seems SETUP transaction was received and endpoint 0 RX is complete.
I'm having a hard time working out exactly why, suspect endpoint 0 is not configured correctly but how to confirm and fix? Any tips/diagnosis methods most welcome, can post up any other code blocks that may be relevant.
This is what I'm doing in main.c
PCD_HandleTypeDef hpcd_USB_DRD_FS;
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
MX_USB_PCD_Init();
MX_USBX_Device_Init();
HAL_PCD_Start(&hpcd_USB_DRD_FS);
while (1)
{
}
and in the callback function (Cube-generated code except for my call to _ux_dcd_stm32_function() )
void HAL_PCD_ResetCallback(PCD_HandleTypeDef *hpcd)
{
/* If the device is attached or configured, we need to disconnect it. */
if (_ux_system_slave -> ux_system_slave_device.ux_slave_device_state != UX_DEVICE_RESET)
{
/* Disconnect the device. */
_ux_device_stack_disconnect();
}
/* Set USB Current Speed */
switch(hpcd -> Init.speed)
{
#ifdef PCD_SPEED_HIGH
case PCD_SPEED_HIGH:
/* We are connected at high speed. */
_ux_system_slave -> ux_system_slave_speed = UX_HIGH_SPEED_DEVICE;
break;
#endif
case PCD_SPEED_FULL:
/* We are connected at full speed. */
_ux_system_slave -> ux_system_slave_speed = UX_FULL_SPEED_DEVICE;
break;
default:
/* We are connected at full speed. */
_ux_system_slave -> ux_system_slave_speed = UX_FULL_SPEED_DEVICE;
break;
}
/* Complete the device initialization. */
_ux_dcd_stm32_initialize_complete();
/* Mark the device as attached now. */
_ux_system_slave -> ux_system_slave_device.ux_slave_device_state = UX_DEVICE_ATTACHED;
if (_ux_system_slave == UX_NULL)
{
return;
}
// Notify USBX driver so it re-opens EP0 and re-arms reception. */
UX_SLAVE_DCD *dcd = &_ux_system_slave->ux_system_slave_dcd;
UX_SLAVE_ENDPOINT *ep0 = &_ux_system_slave->ux_system_slave_device.ux_slave_device_control_endpoint;
_ux_dcd_stm32_function(dcd, UX_DCD_RESET_ENDPOINT, ep0);
}
