diff options
| author | HiFiPhile <[email protected]> | 2024-05-08 12:17:45 +0200 |
|---|---|---|
| committer | GitHub <[email protected]> | 2024-05-08 12:17:45 +0200 |
| commit | c773c612fd4cd3ed9e69875a7553193dc730e363 (patch) | |
| tree | 4a6cdd8da3b3d2cb700a49b34d55533a750070ff | |
| parent | 74e57499baac36c4cccf76549259905162031e41 (diff) | |
| parent | d01b2cfc0e25e6d64f8d7a2d764c2620e0d9d71f (diff) | |
Merge pull request #2629 from andrewleech/cdc-persistent-tx-buffer
Add option to make CDC TX buffer persistent.
| -rw-r--r-- | src/class/cdc/cdc_device.c | 2 | ||||
| -rw-r--r-- | src/class/cdc/cdc_device.h | 6 |
2 files changed, 8 insertions, 0 deletions
diff --git a/src/class/cdc/cdc_device.c b/src/class/cdc/cdc_device.c index 2e0a0c30d..f36725eba 100644 --- a/src/class/cdc/cdc_device.c +++ b/src/class/cdc/cdc_device.c @@ -295,7 +295,9 @@ void cdcd_reset(uint8_t rhport) tu_memclr(p_cdc, ITF_MEM_RESET_SIZE); tu_fifo_clear(&p_cdc->rx_ff); + #if !CFG_TUD_CDC_PERSISTENT_TX_BUFF tu_fifo_clear(&p_cdc->tx_ff); + #endif tu_fifo_set_overwritable(&p_cdc->tx_ff, true); } } diff --git a/src/class/cdc/cdc_device.h b/src/class/cdc/cdc_device.h index 20e908451..db709b3bc 100644 --- a/src/class/cdc/cdc_device.h +++ b/src/class/cdc/cdc_device.h @@ -41,6 +41,12 @@ #define CFG_TUD_CDC_EP_BUFSIZE (TUD_OPT_HIGH_SPEED ? 512 : 64) #endif +// By default the TX fifo buffer is cleared on connect / bus reset. +// Enable this to persist any data in the fifo instead. +#ifndef CFG_TUD_CDC_PERSISTENT_TX_BUFF + #define CFG_TUD_CDC_PERSISTENT_TX_BUFF (0) +#endif + #ifdef __cplusplus extern "C" { #endif |