Posted on August 06, 2014 at 09:00
Bug 1:
STM32Cube_FW_F0_V1.0.0\Drivers\STM32F0xx_HAL_Driver\Inc\stm32f0xx_hal_pcd.h
typedef
struct
{
PCD_TypeDef *Instance;
/*!< Register base address */
PCD_InitTypeDef Init;
/*!< PCD required parameters */
__IO uint8_t USB_Address;
/*!< USB Address */
PCD_EPTypeDef IN_ep[5];
/*!< IN endpoint parameters */
PCD_EPTypeDef OUT_ep[5];
/*!< OUT endpoint parameters */
HAL_LockTypeDef Lock;
/*!< PCD peripheral status */
__IO PCD_StateTypeDef State;
/*!< PCD communication state */
uint32_t Setup[12];
/*!< Setup packet buffer */
void
*pData;
/*!< Pointer to upper stack Handler */
} PCD_HandleTypeDef;
Here is a typo. Size of IN_ep and OUT_ep must be 15 (or at least not less thanhpcd_USB_FS.Init.dev_endpoints).
Bug2:
After I send more than 6-8 bytes per packet at once from or to MCU, PC starts to receive rubbish instead of data sent by MCU.
I've discovered usbd_conf.c/USBD_LL_Init() configures data buffer pointers
HAL_PCDEx_PMAConfig(pdev->pData , 0x00 , PCD_SNG_BUF, 0x18);
HAL_PCDEx_PMAConfig(pdev->pData , 0x80 , PCD_SNG_BUF, 0x58);
but not sets them forCDC_IN_EP (0x81) andCDC_OUT_EP (0x01).
I've replaced this code by the following and that fixed the problem:
HAL_PCDEx_PMAConfig(pdev->pData , 0x00 , PCD_SNG_BUF, 0x18+0*USB_FS_MAX_PACKET_SIZE);
HAL_PCDEx_PMAConfig(pdev->pData , 0x80 , PCD_SNG_BUF, 0x18+1*USB_FS_MAX_PACKET_SIZE);
HAL_PCDEx_PMAConfig(pdev->pData , 0x01 , PCD_SNG_BUF, 0x18+2*USB_FS_MAX_PACKET_SIZE);
HAL_PCDEx_PMAConfig(pdev->pData , 0x81 , PCD_SNG_BUF, 0x18+3*USB_FS_MAX_PACKET_SIZE);
Bug3:
After about 20-30 packets PC receives data it sent instead of data MCU replied with.
