diff options
| -rw-r--r-- | src/rp2040/usbserial.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/rp2040/usbserial.c b/src/rp2040/usbserial.c index 030f4752..3a6736ef 100644 --- a/src/rp2040/usbserial.c +++ b/src/rp2040/usbserial.c @@ -40,7 +40,9 @@ usb_write_packet(uint32_t ep, const void *data, uint_fast8_t len) usb_dpram->ep_buf_ctrl[ep].in = new_epb; // Copy the packet to the hw buffer void *addr = (void*)usb_dpram + usb_buf_offset(ep); + barrier(); memcpy(addr, data, len); + barrier(); // Inform the USB hardware of the available packet usb_dpram->ep_buf_ctrl[ep].in = new_epb | USB_BUF_CTRL_AVAIL; return len; @@ -61,7 +63,9 @@ usb_read_packet(uint32_t ep, void *data, uint_fast8_t max_len) if (c > max_len) c = max_len; void *addr = (void*)usb_dpram + usb_buf_offset(ep); + barrier(); memcpy(data, addr, c); + barrier(); // Notify the USB hardware that the space is now available usb_dpram->ep_buf_ctrl[ep].out = new_epb | USB_BUF_CTRL_AVAIL; return c; @@ -95,6 +99,7 @@ usb_read_ep0_setup(void *data, uint_fast8_t max_len) usb_dpram->ep_buf_ctrl[0].out = (USB_BUF_CTRL_DATA1_PID | USB_BUF_CTRL_LAST | USB_BUF_CTRL_AVAIL | DPBUF_SIZE); usb_hw->sie_status = USB_SIE_STATUS_SETUP_REC_BITS; + barrier(); memcpy(data, (void*)usb_dpram->setup_packet, max_len); barrier(); if (usb_hw->intr & USB_INTR_SETUP_REQ_BITS) { |