Closing endpoints can be important when there are alternate
instances. This adds functionality of closing endpoints
similar to what exists in other drivers.
Internal FIFO for each endpoint is limited to 64 bytes.
It is possible to have longer packets if respective FIFO
is read during actual packet transmission.
This change updates receive data path to allow packets (and
endpoint size) larger then 64 bytes.
If DMA is not used yet DMA is setup for reception of big packets.
If DMA is already assigned to some transfer, code enables FIFO level
warning interrupts and tries to read data before FIFO is filled up.
Dialog Semiconductor's BLE MCU DA1469x comes with full speed USB.
It's base on National Semiconductor discrete USB controller USBN9603/4.
This adds support for:
- control/interrupt/bulk endpoints (up to 64 bytes)
- ISO endpoint were not tested and may not work correctly
- reset/sleep/wakeup are handled
- code for VBUS changes is provided
