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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
View File

@ -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;

43
src/portable/raspberrypi/rp2040/dcd_rp2040.c
View File

@ -317,13 +317,45 @@ static void dcd_rp2040_irq(void)
pico_trace("BUS RESET (addr %d -> %d)\n", assigned_address, 0);
usb_hw->dev_addr_ctrl = 0;
handled |= USB_INTS_BUS_RESET_BITS;
dcd_event_bus_signal(0, DCD_EVENT_BUS_RESET, true);
dcd_event_bus_reset(0, TUSB_SPEED_FULL, true);
usb_hw_clear->sie_status = USB_SIE_STATUS_BUS_RESET_BITS;
#if TUD_OPT_RP2040_USB_DEVICE_ENUMERATION_FIX
rp2040_usb_device_enumeration_fix();
#endif
}
if (status & USB_INTS_DEV_CONN_DIS_BITS)
{
handled |= USB_INTS_DEV_CONN_DIS_BITS;
if ( usb_hw->sie_status & USB_SIE_STATUS_CONNECTED_BITS )
{
// Connected: nothing to do
}else
{
// Disconnected
dcd_event_bus_signal(0, DCD_EVENT_UNPLUGGED, true);
}
usb_hw_clear->sie_status = USB_SIE_STATUS_CONNECTED_BITS;
}
#if 0 // TODO Enable SUSPEND & RESUME interrupt and test later on with/without VBUS detection
if (status & USB_INTS_DEV_SUSPEND_BITS)
{
handled |= USB_INTS_DEV_SUSPEND_BITS;
dcd_event_bus_signal(0, DCD_EVENT_SUSPEND, true);
usb_hw_clear->sie_status = USB_SIE_STATUS_SUSPENDED_BITS;
}
if (status & USB_INTS_DEV_RESUME_FROM_HOST_BITS)
{
handled |= USB_INTS_DEV_RESUME_FROM_HOST_BITS;
dcd_event_bus_signal(0, DCD_EVENT_RESUME, true);
usb_hw_clear->sie_status = USB_SIE_STATUS_RESUME_BITS;
}
#endif
if (status ^ handled)
{
panic("Unhandled IRQ 0x%x\n", (uint) (status ^ handled));
@ -364,8 +396,10 @@ void dcd_init (uint8_t rhport)
// Enable individual controller IRQS here. Processor interrupt enable will be used
// for the global interrupt enable...
// TODO Enable SUSPEND & RESUME interrupt
usb_hw->sie_ctrl = USB_SIE_CTRL_EP0_INT_1BUF_BITS;
usb_hw->inte = USB_INTS_BUFF_STATUS_BITS | USB_INTS_BUS_RESET_BITS | USB_INTS_SETUP_REQ_BITS;
usb_hw->inte = USB_INTS_BUFF_STATUS_BITS | USB_INTS_BUS_RESET_BITS | USB_INTS_SETUP_REQ_BITS |
USB_INTS_DEV_CONN_DIS_BITS /* | USB_INTS_DEV_SUSPEND_BITS | USB_INTS_DEV_RESUME_FROM_HOST_BITS */ ;
dcd_connect(rhport);
}
@ -393,8 +427,9 @@ void dcd_set_address (uint8_t rhport, uint8_t dev_addr)
void dcd_remote_wakeup(uint8_t rhport)
{
pico_info("dcd_remote_wakeup %d is not supported yet\n", rhport);
pico_info("dcd_remote_wakeup %d\n", rhport);
assert(rhport == 0);
usb_hw_set->sie_ctrl = USB_SIE_CTRL_RESUME_BITS;
}
// disconnect by disabling internal pull-up resistor on D+/D-
@ -402,6 +437,7 @@ void dcd_disconnect(uint8_t rhport)
{
pico_info("dcd_disconnect %d\n", rhport);
assert(rhport == 0);
//TU_LOG2("dcd_disconnect\n");
usb_hw_clear->sie_ctrl = USB_SIE_CTRL_PULLUP_EN_BITS;
}
@ -410,6 +446,7 @@ void dcd_connect(uint8_t rhport)
{
pico_info("dcd_connect %d\n", rhport);
assert(rhport == 0);
//TU_LOG2("dcd_connect\n");
usb_hw_set->sie_ctrl = USB_SIE_CTRL_PULLUP_EN_BITS;
}