CubeMX2: USB PMA buffer descriptor table sizing error

[G5658]

Cubemx2 only allots enough buffer descriptor table space for 4 endpoints. When a 5th endpoint is added, the table will overlap with the data buffer. 

In the following generated code, address should be starting at 0x28 and not 0x20.

  HAL_PCD_PMAConfig(&hUSB_DRD_FS_PCD, 0x0, HAL_PCD_SNG_BUF, 0x20);
  HAL_PCD_PMAConfig(&hUSB_DRD_FS_PCD, 0x80, HAL_PCD_SNG_BUF, 0x60);
  HAL_PCD_PMAConfig(&hUSB_DRD_FS_PCD, 0x81, HAL_PCD_SNG_BUF, 0xA0);
  HAL_PCD_PMAConfig(&hUSB_DRD_FS_PCD, 0x82, HAL_PCD_SNG_BUF, 0xE0);
  HAL_PCD_PMAConfig(&hUSB_DRD_FS_PCD, 0x3, HAL_PCD_SNG_BUF, 0x120);
  HAL_PCD_PMAConfig(&hUSB_DRD_FS_PCD, 0x83, HAL_PCD_SNG_BUF, 0x160);
  HAL_PCD_PMAConfig(&hUSB_DRD_FS_PCD, 0x4, HAL_PCD_SNG_BUF, 0x1A0);

 

[T_Hamdi]

Hello ​@G5658 

Thank you for bringing this issue to our attention.

I reported this internally.

Internal ticket number: CDM0065880

with regrads,

Hamdi 

[FBL]

Hi ​@G5658 

Thank you for bringing this issue to our attention. We’ve updated the PMA buffer base offset to 0x40, reserving space for the buffer descriptor table and preventing overlap with packet data buffers. The generated code will now place the first data buffer at 0x40. This fix is planned for the next release.