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rp2040 add disconnection detection

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- also use dcd_event_bus_reset()
- Add TODO for suspend, resume later on (need to test with/without vbus
detection).
This commit is contained in:
hathach
2021-03-02 23:24:36 +07:00
parent d91979cfef
commit 9d5e369170
2 changed files with 53 additions and 11 deletions
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21
src/device/usbd.c
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@@ -992,11 +992,15 @@ void dcd_event_handler(dcd_event_t const * event, bool in_isr)
switch (event->event_id)
{
case DCD_EVENT_UNPLUGGED:
_usbd_dev.connected = 0;
_usbd_dev.addressed = 0;
_usbd_dev.cfg_num = 0;
_usbd_dev.suspended = 0;
osal_queue_send(_usbd_q, event, in_isr);
// UNPLUGGED event can be bouncing, only processing if we are currently connected
if ( _usbd_dev.connected )
{
_usbd_dev.connected = 0;
_usbd_dev.addressed = 0;
_usbd_dev.cfg_num = 0;
_usbd_dev.suspended = 0;
osal_queue_send(_usbd_q, event, in_isr);
}
break;
case DCD_EVENT_SOF:
@@ -1004,9 +1008,10 @@ void dcd_event_handler(dcd_event_t const * event, bool in_isr)
break;
case DCD_EVENT_SUSPEND:
// NOTE: When plugging/unplugging device, the D+/D- state are unstable and can accidentally meet the
// SUSPEND condition ( Idle for 3ms ). Some MCUs such as SAMD doesn't distinguish suspend vs disconnect as well.
// We will skip handling SUSPEND/RESUME event if not currently connected
// NOTE: When plugging/unplugging device, the D+/D- state are unstable and
// can accidentally meet the SUSPEND condition ( Bus Idle for 3ms ).
// In addition, some MCUs such as SAMD or boards that haven no VBUS detection cannot distinguish
// suspended vs disconnected. We will skip handling SUSPEND/RESUME event if not currently connected
if ( _usbd_dev.connected )
{
_usbd_dev.suspended = 1;