I have a very strange bug.
I performed endpoint initialization during the USB initialization and reset process.
It looks like this :But the endpoint 2 request of the USB bus is always NAK, usb_hw->buf_status is always 0.
The Interrupt of Endporint 0 is fine.
I haven't been able to find out what causes this phenomenon.
I performed endpoint initialization during the USB initialization and reset process.
It looks like this :
Code:
/* endpoint 1 */ usb_dpram->ep_ctrl[0].in = ( EP_CTRL_ENABLE_BITS | EP_CTRL_INTERRUPT_PER_BUFFER | (USB_TRANSFER_TYPE_BULK << EP_CTRL_BUFFER_TYPE_LSB) | 0x180 ); /* endpoint 2 */ usb_dpram->ep_ctrl[1].out = ( EP_CTRL_ENABLE_BITS | EP_CTRL_INTERRUPT_PER_BUFFER | (USB_TRANSFER_TYPE_BULK << EP_CTRL_BUFFER_TYPE_LSB) | 0x240 );The Interrupt of Endporint 0 is fine.
I haven't been able to find out what causes this phenomenon.
Statistics: Posted by hangang_2 — Sun Mar 17, 2024 12:59 am — Replies 0 — Views 27