From aea4f6046e9a07d5f169de9fcc31bca2b667ea45 Mon Sep 17 00:00:00 2001 From: hathach Date: Thu, 12 Mar 2026 12:16:57 +0700 Subject: refactor(vendor/cdc): add CFG_TUD_CDC_RX_NEED_ZLP and CFG_TUD_VENDOR_RX_NEED_ZLP --- examples/device/cdc_msc/src/tusb_config.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'examples/device/cdc_msc/src') diff --git a/examples/device/cdc_msc/src/tusb_config.h b/examples/device/cdc_msc/src/tusb_config.h index c4f4374a2..f0709d8fb 100644 --- a/examples/device/cdc_msc/src/tusb_config.h +++ b/examples/device/cdc_msc/src/tusb_config.h @@ -103,8 +103,8 @@ #define CFG_TUD_CDC_RX_BUFSIZE (TUD_OPT_HIGH_SPEED ? 512 : 64) #define CFG_TUD_CDC_TX_BUFSIZE (TUD_OPT_HIGH_SPEED ? 512 : 64) -// CDC Endpoint transfer buffer size, more is faster -// Only increase RX_EPSIZE if your host driver/application support zero-length packet (ZLP) +// CDC Endpoint transfer buffer size, default to max bulk packet size (HS 512, FS 64). Larger is faster. +// Larger RX_EPSIZE requires CFG_TUD_CDC_RX_NEED_ZLP = 1 and host ZLP support #define CFG_TUD_CDC_RX_EPSIZE (TUD_OPT_HIGH_SPEED ? 512 : 64) #define CFG_TUD_CDC_TX_EPSIZE (TUD_OPT_HIGH_SPEED ? 512 : 64) -- cgit v1.3.1