I am using FS USB 4.1.1, i want to send large stream of data. by calling multiple USB_Class_CDC_Interface_DIC_Send_Data()
the problem is the buffer is overwitten. Did any one manage to handle this issue?
Thanks for your response.
On the PC side, i reguested 8192 you expect.
from the device side I send two 4096 packets using USB_Class_CDC_Interface_DIC_Send_Data(). if I use different buffers i mangeged to recieve them but becuase of RAM limittaion I just want to use one 4096 buffer and call the USB_Class_CDC_Interface_DIC_Send_Data() twice.
There's no need to use a buffer that large. As I said the second time you called with the same buffer the data will be overwritten.
You will never get close to 200 K bytes per second. At best you might get 128k Which is 2 64 Byte packets Each poll. a slow MCU like the jm Cannot keep up much faster than that.
Use two smaller buffers.