From 029691afa4dad1309691369de709b2f1226717d9 Mon Sep 17 00:00:00 2001 From: Zixun LI Date: Tue, 4 Aug 2026 16:02:10 +0200 Subject: [PATCH] avoid flushing tx buffer on connection Signed-off-by: Zixun LI --- src/class/cdc/cdc_device.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/src/class/cdc/cdc_device.c b/src/class/cdc/cdc_device.c index 56d4aeed9..ed050ad03 100644 --- a/src/class/cdc/cdc_device.c +++ b/src/class/cdc/cdc_device.c @@ -323,9 +323,7 @@ uint16_t cdcd_open(uint8_t rhport, const tusb_desc_interface_t* itf_desc, uint16 tu_edpt_stream_t *stream_tx = &p_cdc->tx_stream; tu_edpt_stream_open(stream_tx, rhport, desc_ep, CFG_TUD_CDC_TX_EPSIZE); - #if CFG_TUD_CDC_TX_PERSISTENT - tu_edpt_stream_write_xfer(stream_tx); // flush pending data - #else + #if !CFG_TUD_CDC_TX_PERSISTENT tu_edpt_stream_clear(stream_tx); #endif } else {