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usb-epfifo: fix DATA0/DATA1 swaps for Tx 

We were sometimes sending DATA0 instead of DATA1.  Fix that.

Signed-off-by: Sean Cross <sean@xobs.io>
This commit is contained in:
Sean Cross 2019-04-05 17:33:02 +08:00
parent 7d091a72b9
commit eaa0d63ccb
1 changed files with 4 additions and 2 deletions
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6
sw/src/usb-epfifo.c
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@ -127,8 +127,8 @@ int usb_send(struct usb_device *dev, int epnum, const void *data, int total_coun
int usb_wait_for_send_done(struct usb_device *dev) {
while (current_data && current_length)
usb_poll(dev);
while (usb_ep_0_in_respond_read() == EPF_ACK)
;
while ((usb_ep_0_in_dtb_read() & 1) == 1)
usb_poll(dev);
return 0;
}
@ -185,6 +185,8 @@ int usb_irq_happened(void) {
int usb_ack(struct usb_device *dev, int epnum) {
(void)dev;
(void)epnum;
usb_ep_0_in_dtb_write(1);
usb_ep_0_out_dtb_write(1);
usb_ep_0_out_respond_write(EPF_ACK);
usb_ep_0_in_respond_write(EPF_ACK);
return 0;