diff options
Diffstat (limited to 'tinyusb/class/cdc/cdc_device.c')
| -rw-r--r-- | tinyusb/class/cdc/cdc_device.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/tinyusb/class/cdc/cdc_device.c b/tinyusb/class/cdc/cdc_device.c index 4144dc018..f08f208ae 100644 --- a/tinyusb/class/cdc/cdc_device.c +++ b/tinyusb/class/cdc/cdc_device.c @@ -289,7 +289,11 @@ bool tud_n_cdc_flush (uint8_t rhport) VERIFY( !dcd_edpt_busy(rhport, edpt) );
uint16_t count = fifo_read_n(&_tx_ff, _tmp_tx_buf, sizeof(_tmp_tx_buf));
- TU_ASSERT( dcd_edpt_xfer(rhport, edpt, _tmp_tx_buf, count) );
+
+ if ( count )
+ {
+ TU_ASSERT( dcd_edpt_xfer(rhport, edpt, _tmp_tx_buf, count) );
+ }
return true;
}
|