From 603effbb77ab587bae9800993a53599a9dbff97e Mon Sep 17 00:00:00 2001 From: Tomas Rezucha Date: Thu, 2 Jun 2022 13:22:53 +0200 Subject: [PATCH] cdc: Fix autoflush for FIFO < MPS --- src/class/cdc/cdc_device.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/class/cdc/cdc_device.c b/src/class/cdc/cdc_device.c index fab6f003..77c73030 100644 --- a/src/class/cdc/cdc_device.c +++ b/src/class/cdc/cdc_device.c @@ -171,7 +171,7 @@ uint32_t tud_cdc_n_write(uint8_t itf, void const* buffer, uint32_t bufsize) uint16_t ret = tu_fifo_write_n(&p_cdc->tx_ff, buffer, (uint16_t) bufsize); // flush if queue more than packet size - if ( tu_fifo_count(&p_cdc->tx_ff) >= BULK_PACKET_SIZE ) + if ( (tu_fifo_count(&p_cdc->tx_ff) >= BULK_PACKET_SIZE) || ((CFG_TUD_CDC_TX_BUFSIZE < BULK_PACKET_SIZE) && tu_fifo_full(&p_cdc->tx_ff)) ) { tud_cdc_n_write_flush(itf); }