deac/osd-contiki
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

Improve handling of CDC ACM line state

Browse source 
- For the CC2538, simplify handling of USB_CDC_ACM_LINE_STATE
  events. Ignore the Carrier Control (RTS) bit when receiving
  a SET_CONTROL_LINE _STATE request, we are a full duplex device.
- Improve behaviour of the CC2531 USB stick when there is no
  process on the host to read IN data. Basically, we adopt the
  CC2538 approach and we only send data when a DTE is present
This commit is contained in:
George Oikonomou 2013-03-23 18:51:36 +00:00
parent 260b004b7e
commit 007e113ea9
2 changed files with 12 additions and 13 deletions
Download patch file Download diff file Expand all files Collapse all files

11
platform/cc2530dk/dev/usb-serial.c
View file

@ -170,6 +170,16 @@ do_work(void)
enabled = 0;
}
events = usb_cdc_acm_get_events();
if(events & USB_CDC_ACM_LINE_STATE) {
uint8_t line_state = usb_cdc_acm_get_line_state();
if(line_state & USB_CDC_ACM_DTE) {
enabled = 1;
} else {
enabled = 0;
}
}
if(!enabled) {
return;
}
@ -254,6 +264,7 @@ PROCESS_THREAD(usb_serial_process, ev, data)
usb_setup();
usb_cdc_acm_setup();
usb_set_global_event_process(&usb_serial_process);
usb_cdc_acm_set_event_process(&usb_serial_process);
usb_set_ep_event_process(EPIN, &usb_serial_process);
usb_set_ep_event_process(EPOUT, &usb_serial_process);