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usbd better support suspend/resume

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hathach 2019-04-02 01:30:01 +07:00
parent e9851f5042
commit 491b5936d5
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GPG Key ID: 2FA891220FBFD581
2 changed files with 35 additions and 30 deletions
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26
src/device/usbd.c
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@ -262,18 +262,10 @@ void tud_task (void)
if ( !osal_queue_receive(_usbd_q, &event) ) return;
// Skip event if device is not connected except BUS_RESET & UNPLUGGED & FUNC_CALL
if ( !(_usbd_dev.connected || event.event_id == DCD_EVENT_UNPLUGGED ||
event.event_id == DCD_EVENT_BUS_RESET || event.event_id == USBD_EVENT_FUNC_CALL) )
{
return;
}
switch ( event.event_id )
{
case DCD_EVENT_BUS_RESET:
usbd_reset(event.rhport);
_usbd_dev.connected = 1; // connected after bus reset
break;
case DCD_EVENT_UNPLUGGED:
@ -284,6 +276,10 @@ void tud_task (void)
break;
case DCD_EVENT_SETUP_RECEIVED:
// Mark as connected after receiving 1st setup packet.
// But it is easier to set it every time instead of wasting time to check then set
_usbd_dev.connected = 1;
// Process control request
if ( !process_control_request(event.rhport, &event.setup_received) )
{
@ -294,6 +290,8 @@ void tud_task (void)
break;
case DCD_EVENT_XFER_COMPLETE:
// Only handle xfer callback in ready state
// if (_usbd_dev.connected && !_usbd_dev.suspended)
{
// Invoke the class callback associated with the endpoint address
uint8_t const ep_addr = event.xfer_complete.ep_addr;
@ -641,16 +639,22 @@ void dcd_event_handler(dcd_event_t const * event, bool in_isr)
break;
case DCD_EVENT_SUSPEND:
// NOTE: When unplugging device, the D+/D- state are unstable and can accidentally meet the
// SUSPEND condition ( Idle for 3ms ). Most likely when this happen both suspend and resume
// are submitted by DCD before the actual UNPLUGGED
// 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 don't distinguish suspend vs disconnect as well.
// We will skip handling SUSPEND/RESUME event if not currently connected
if ( _usbd_dev.connected )
{
_usbd_dev.suspended = 1;
osal_queue_send(_usbd_q, event, in_isr);
}
break;
case DCD_EVENT_RESUME:
if ( _usbd_dev.connected )
{
_usbd_dev.suspended = 0;
osal_queue_send(_usbd_q, event, in_isr);
}
break;
case DCD_EVENT_SETUP_RECEIVED:

1
src/device/usbd_control.c
View File

@ -114,6 +114,7 @@ bool usbd_control_xfer_cb (uint8_t rhport, uint8_t ep_addr, xfer_result_t result
if ( _control_state.request.bmRequestType_bit.direction == TUSB_DIR_OUT )
{
TU_VERIFY(_control_state.buffer);
memcpy(_control_state.buffer, _usbd_ctrl_buf, xferred_bytes);
}