diff options
| -rw-r--r-- | src/class/cdc/cdc_device.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/src/class/cdc/cdc_device.c b/src/class/cdc/cdc_device.c index 64cb4ab2c..d9b098bb2 100644 --- a/src/class/cdc/cdc_device.c +++ b/src/class/cdc/cdc_device.c @@ -434,11 +434,10 @@ bool cdcd_xfer_cb(uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint32_ { tu_fifo_write_n(&p_cdc->rx_ff, &p_cdc->epout_buf, xferred_bytes); - // TODO search for wanted char first for better performance + // Check for wanted char and invoke callback if needed if (tud_cdc_rx_wanted_cb && ( ((signed char) p_cdc->wanted_char) != -1)) { - // Check for wanted char and invoke callback if needed for (uint32_t i=0; i<xferred_bytes; i++) { - if ( p_cdc->wanted_char == p_cdc->epout_buf[i] ) { + if ( p_cdc->wanted_char == p_cdc->epout_buf[i] && tu_fifo_count(&p_cdc->rx_ff) ) { tud_cdc_rx_wanted_cb(itf, p_cdc->wanted_char); } } |