diff options
| author | hathach <[email protected]> | 2018-04-07 15:04:01 +0700 |
|---|---|---|
| committer | hathach <[email protected]> | 2018-04-07 15:04:01 +0700 |
| commit | fb27ae96b0197d4f072d3e5b825c8ef132903a96 (patch) | |
| tree | 35782465cdd2a154a8126da2d0f539bda5b65892 /tinyusb/class/cdc/cdc_device.c | |
| parent | 9be8e7bef6d8d8cada684f1f46334bceded7479f (diff) | |
fix cdc_device flush send zero bytes
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;
}
|