STM32Cube MCU Full Package for the STM32F4 series - (HAL + LL Drivers, CMSIS Core, CMSIS Device, MW libraries plus a set of Projects running on all boards provided by ST (Nucleo, Evaluation and Discovery Kits))
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Add description of parameter "length" in the header comment of function USBD_CDC_SetTxBuffer() #128
Parameter length of the USBD_CDC_SetTxBuffer() function does not define the size of the buffer. This latter is defined by the APP_TX_DATA_SIZE macro and can be changed from the Cube MX GUI.
Rather, it indicates the length of the data to be sent when calling USBD_CDC_TransmitPacket(). Unfortunately, this parameter has not been described in the function's header. This also explains why the USBD_CDC_SetRxBuffer() function does not have such one.
ALABSTM
commented
2 years ago
Initially discussed in #59.
Parameter
lengthof theUSBD_CDC_SetTxBuffer()function does not define the size of the buffer. This latter is defined by theAPP_TX_DATA_SIZEmacro and can be changed from the Cube MX GUI.https://github.com/STMicroelectronics/STM32CubeF4/blob/2f3b26f16559f7af495727a98253067a31182cfc/Middlewares/ST/STM32_USB_Device_Library/Class/CDC/Src/usbd_cdc.c#L857-L858
Rather, it indicates the length of the data to be sent when calling
USBD_CDC_TransmitPacket(). Unfortunately, this parameter has not been described in the function's header. This also explains why theUSBD_CDC_SetRxBuffer()function does not have such one.