static void udd_ep_ack_out_received(udd_ep_id_t ep)
{
bool bank0_received, bank1_received;
udd_ep_job_t *ptr_job = &udd_ep_job[ep - 1];
bank0_received = Is_udd_bank0_received(ep);
bank1_received = Is_udd_bank1_received(ep);
if (bank0_received && bank1_received) {
// The only way is to use ptr_job->bank
} else if (bank0_received) {
// Must be bank0
ptr_job->bank = 0;
} else {
// Must be bank1
ptr_job->bank = 1;
}
if (ptr_job->bank == 0) {
udd_ack_bank0_received(ep);
if (udd_get_endpoint_bank_max_nbr(ep) > 1) {
ptr_job->bank = 1;
}
} else {
udd_ack_bank1_received(ep);
ptr_job->bank = 0;
}
}
static void udd_ctrl_out_received(void)
{
uint8_t i;
uint16_t nb_data;
if (UDD_EPCTRL_DATA_OUT != udd_ep_control_state) {
if ((UDD_EPCTRL_DATA_IN == udd_ep_control_state)
|| (UDD_EPCTRL_HANDSHAKE_WAIT_OUT_ZLP ==
udd_ep_control_state)) {
// End of SETUP request:
// - Data IN Phase aborted,
// - or last Data IN Phase hidden by ZLP OUT sending quickly,
// - or ZLP OUT received normally.
udd_ctrl_endofrequest();
} else {
// Protocol error during SETUP request
udd_ctrl_stall_data();
}
udd_ack_bank0_received(0);
// Reinitializes control endpoint management
udd_ctrl_init();
return;
}
// Read data received during OUT phase
nb_data = udd_byte_count(0);
if (udd_g_ctrlreq.payload_size < (udd_ctrl_payload_nb_trans + nb_data)) {
// Payload buffer too small
nb_data = udd_g_ctrlreq.payload_size -
udd_ctrl_payload_nb_trans;
}
uint8_t *ptr_dest = udd_g_ctrlreq.payload + udd_ctrl_payload_nb_trans;
for (i = 0; i < nb_data; i++) {
*ptr_dest++ = udd_endpoint_fifo_read(0);
}
udd_ctrl_payload_nb_trans += nb_data;
if ((USB_DEVICE_EP_CTRL_SIZE != nb_data)
|| (udd_g_ctrlreq.req.wLength <=
(udd_ctrl_prev_payload_nb_trans +
udd_ctrl_payload_nb_trans))) {
// End of reception because it is a short packet
// Before send ZLP, call intermediate callback
// in case of data receive generate a stall
udd_g_ctrlreq.payload_size = udd_ctrl_payload_nb_trans;
if (NULL != udd_g_ctrlreq.over_under_run) {
if (!udd_g_ctrlreq.over_under_run()) {
// Stall ZLP
udd_ctrl_stall_data();
// Ack reception of OUT to replace NAK by a STALL
udd_ack_bank0_received(0);
return;
}
}
// Send IN ZLP to ACK setup request
udd_ack_bank0_received(0);
udd_ctrl_send_zlp_in();
return;
}
if (udd_g_ctrlreq.payload_size == udd_ctrl_payload_nb_trans) {
// Overrun then request a new payload buffer
if (!udd_g_ctrlreq.over_under_run) {
// No callback available to request a new payload buffer
udd_ctrl_stall_data();
// Ack reception of OUT to replace NAK by a STALL
udd_ack_bank0_received(0);
return;
}
if (!udd_g_ctrlreq.over_under_run()) {
// No new payload buffer delivered
udd_ctrl_stall_data();
// Ack reception of OUT to replace NAK by a STALL
udd_ack_bank0_received(0);
return;
}
// New payload buffer available
// Update number of total data received
udd_ctrl_prev_payload_nb_trans += udd_ctrl_payload_nb_trans;
// Reinit reception on payload buffer
udd_ctrl_payload_nb_trans = 0;
}
// Free buffer of control endpoint to authorize next reception
udd_ack_bank0_received(0);
}
