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Just leave the endpoints open, instead of closing/reopening

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This commit is contained in:
Jacob Potter 2020-11-04 23:53:03 -07:00
parent a3d6e8fc52
commit a3fdcbdf16
1 changed files with 15 additions and 31 deletions
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46
src/class/cdc/cdc_ncm_device.c
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@ -51,11 +51,6 @@ typedef struct
uint8_t ep_in;
uint8_t ep_out;
// Endpoint descriptor use to open/close when receving SetInterface
// TODO since configuration descriptor may not be long-lived memory, we should
// keep a copy of endpoint attribute instead
uint8_t const * ecm_desc_epdata;
enum {
REPORT_SPEED,
REPORT_CONNECTED,
@ -290,9 +285,7 @@ uint16_t ncmd_open(uint8_t rhport, tusb_desc_interface_t const * itf_desc, uint1
// Pair of endpoints
TU_ASSERT(TUSB_DESC_ENDPOINT == tu_desc_type(p_desc), 0);
// ECM by default is in-active, save the endpoint attribute
// to open later when receive_ntb setInterface
ncm_interface.ecm_desc_epdata = p_desc;
TU_ASSERT(usbd_open_edpt_pair(rhport, p_desc, 2, TUSB_XFER_BULK, &ncm_interface.ep_out, &ncm_interface.ep_in) );
drv_len += 2*sizeof(tusb_desc_endpoint_t);
@ -348,33 +341,22 @@ bool ncmd_control_request(uint8_t rhport, tusb_control_request_t const * request
// Only valid for Data Interface with Alternate is either 0 or 1
TU_VERIFY(ncm_interface.itf_num + 1 == req_itfnum && req_alt < 2);
ncm_interface.itf_data_alt = req_alt;
if (req_alt != ncm_interface.itf_data_alt) {
ncm_interface.itf_data_alt = req_alt;
if ( ncm_interface.itf_data_alt )
{
// TODO since we don't actually close endpoint
// hack here to not re-open it
if (ncm_interface.ep_in == 0 && ncm_interface.ep_out == 0)
{
TU_ASSERT(ncm_interface.ecm_desc_epdata);
TU_ASSERT( usbd_open_edpt_pair(rhport, ncm_interface.ecm_desc_epdata, 2, TUSB_XFER_BULK, &ncm_interface.ep_out, &ncm_interface.ep_in) );
// TODO set flag indicating tx allowed?
ncm_receive_renew(); // prepare for incoming datagrams
tud_ncm_link_state_cb(true);
if (ncm_interface.itf_data_alt) {
if (!usbd_edpt_busy(rhport, ncm_interface.ep_out)) {
ncm_receive_renew(); // prepare for incoming datagrams
}
if (!ncm_interface.report_pending) {
ncm_report();
}
}
} else {
// TODO close the endpoint pair
// For now pretend that we did, this should have no harm since host won't try to
// communicate with the endpoints again
// ncm_interface.ep_in = ncm_interface.ep_out = 0
// ncm_interface.report_pending = 0;
tud_ncm_link_state_cb(ncm_interface.itf_data_alt);
}
tud_control_status(rhport, request);
if (!ncm_interface.report_pending) ncm_report();
}
break;
@ -445,7 +427,7 @@ bool ncmd_xfer_cb(uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint32_
}
// If there are datagrams queued up that we tried to send while this NTB was being emitted, send them now
if (ncm_interface.datagram_count) {
if (ncm_interface.datagram_count && ncm_interface.itf_data_alt == 1) {
ncm_start_tx();
}
}
@ -462,6 +444,8 @@ bool ncmd_xfer_cb(uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint32_
bool tud_ncm_xmit(void *arg, uint16_t size, void (*flatten)(void *, uint8_t *, uint16_t)) {
transmit_ntb_t *ntb = &transmit_ntb[ncm_interface.current_ntb];
TU_VERIFY(ncm_interface.itf_data_alt == 1);
if (ncm_interface.datagram_count >= ncm_interface.max_datagrams_per_ntb) {
return false;
}