Merge pull request #434 from gh2o/master

Add TX callback to CDC device
2020-08-21 11:14:06 +07:00
parent e90cf7a676 72183c7bb4
commit e5d622b749
2 changed files with 6 additions and 0 deletions
--- a/src/class/cdc/cdc_device.c
+++ b/src/class/cdc/cdc_device.c
@@ -416,6 +416,9 @@ bool cdcd_xfer_cb(uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint32_
  //       Though maybe the baudrate is not really important !!!
  if ( ep_addr == p_cdc->ep_in )
  {
+    // invoke transmit callback to possibly refill tx fifo
+    if ( tud_cdc_tx_complete_cb ) tud_cdc_tx_complete_cb(itf);
+
    if ( 0 == tud_cdc_n_write_flush(itf) )
    {
      // There is no data left, a ZLP should be sent if