diff options
Diffstat (limited to 'src/class')
| -rw-r--r-- | src/class/cdc/cdc_device.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/class/cdc/cdc_device.c b/src/class/cdc/cdc_device.c index 6f71cb781..56cc94abc 100644 --- a/src/class/cdc/cdc_device.c +++ b/src/class/cdc/cdc_device.c @@ -353,6 +353,16 @@ bool cdcd_control_request(uint8_t rhport, tusb_control_request_t const * request bool const dtr = tu_bit_test(request->wValue, 0); bool const rts = tu_bit_test(request->wValue, 1); +#if CFG_TUD_CDC_CLEAR_AT_CONNECTION + // DTE connected event (if DTE supports DTR bit) + if ( dtr && !tu_bit_test(p_cdc->line_state, 0) ) + { + // Clear not transmitted data + usbd_edpt_xfer_abort(rhport, p_cdc->ep_in); + tu_fifo_clear(&p_cdc->tx_ff); + } +#endif + p_cdc->line_state = (uint8_t) request->wValue; // Disable fifo overwriting if DTR bit is set |