cdc device require SOF to operate

1 files changed, 6 insertions, 4 deletions

diff --git a/tinyusb/class/cdc/cdc_device.c b/tinyusb/class/cdc/cdc_device.c
index 4e9a22539..0b83457b5 100644
--- a/tinyusb/class/cdc/cdc_device.c
+++ b/tinyusb/class/cdc/cdc_device.c
@@ -270,6 +270,8 @@ tusb_error_t cdcd_xfer_cb(endpoint_handle_t edpt_hdl, tusb_event_t event, uint32
 

 void cdcd_sof(uint8_t coreid)

 {

+  if ( !tud_cdc_connected(coreid) ) return;

+

   endpoint_handle_t ep = cdcd_data[coreid].edpt_hdl[CDC_PIPE_DATA_IN];

 

   if ( !dcd_pipe_is_busy( ep ) )

@@ -280,14 +282,14 @@ void cdcd_sof(uint8_t coreid)
   }

 }

 

-uint32_t tud_cdc_available(uint8_t coreid)

+bool tud_cdc_connected(uint8_t coreid)

 {

-  return fifo_count(&_rx_ff);

+  return cdcd_data[coreid].connected;

 }

 

-bool tud_cdc_connected(uint8_t coreid)

+uint32_t tud_cdc_available(uint8_t coreid)

 {

-  return cdcd_data[coreid].connected;

+  return fifo_count(&_rx_ff);

 }

 

 int tud_cdc_read_char(uint8_t coreid)