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src: epfifo: add address support

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Signed-off-by: Sean Cross <sean@xobs.io>
This commit is contained in:
Sean Cross 2019-09-11 13:30:32 +08:00
parent a9a75fb02f
commit 3ea66a7689
1 changed files with 14 additions and 1 deletions
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15
sw/src/usb-epfifo.c
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@ -22,6 +22,9 @@ static volatile int data_offset;
static volatile int data_to_send;
static int next_packet_is_empty;
static int have_new_address;
static uint8_t new_address;
// Note that our PIDs are only bits 2 and 3 of the token,
// since all other bits are effectively redundant at this point.
enum USB_PID {
@ -192,6 +195,10 @@ void usb_isr(void) {
if (ep0i_pending) {
usb_ep_0_in_respond_write(EPF_NAK);
usb_ep_0_in_ev_pending_write(ep0i_pending);
if (have_new_address) {
have_new_address = 0;
usb_address_write(new_address);
}
}
return;
@ -209,7 +216,8 @@ void usb_ack_out(void) {
usb_ep_0_out_respond_write(EPF_ACK);
}
void usb_err(void) {
void usb_err(uint8_t epdir) {
(void)epdir;
usb_ep_0_out_respond_write(EPF_STALL);
usb_ep_0_in_respond_write(EPF_STALL);
}
@ -238,6 +246,11 @@ int usb_recv(void *buffer, unsigned int buffer_len) {
return 0;
}
void usb_set_address(uint8_t new_address_) {
new_address = new_address_;
have_new_address = 1;
}
void usb_poll(void) {
// If some data was received, then process it.
while (usb_ep0out_rd_ptr != usb_ep0out_wr_ptr) {