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should fix #184

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only response up to EP0 size with get device descriptor if not
addressed.
This commit is contained in:
hathach 2019-10-29 16:25:32 +07:00
parent 71a4076e73
commit f6a65720e5
1 changed files with 14 additions and 1 deletions
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15
src/device/usbd.c
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@ -44,6 +44,7 @@ typedef struct {
struct TU_ATTR_PACKED
{
volatile uint8_t connected : 1;
volatile uint8_t addressed : 1;
volatile uint8_t configured : 1;
volatile uint8_t suspended : 1;
@ -478,6 +479,7 @@ static bool process_control_request(uint8_t rhport, tusb_control_request_t const
// Depending on mcu, status phase could be sent either before or after changing device address
// Therefore DCD must include zero-length status response
dcd_set_address(rhport, (uint8_t) p_request->wValue);
_usbd_dev.addressed = 1;
return true; // skip status
break;
@ -752,7 +754,17 @@ static bool process_get_descriptor(uint8_t rhport, tusb_control_request_t const
switch(desc_type)
{
case TUSB_DESC_DEVICE:
return tud_control_xfer(rhport, p_request, (void*) tud_descriptor_device_cb(), sizeof(tusb_desc_device_t));
{
uint16_t len = sizeof(tusb_desc_device_t);
// Only send up to EP0 Packet Size if not addressed
if ((CFG_TUD_ENDPOINT0_SIZE < sizeof(tusb_desc_device_t)) && !_usbd_dev.addressed)
{
len = CFG_TUD_ENDPOINT0_SIZE;
}
return tud_control_xfer(rhport, p_request, (void*) tud_descriptor_device_cb(), len);
}
break;
case TUSB_DESC_BOS:
@ -820,6 +832,7 @@ void dcd_event_handler(dcd_event_t const * event, bool in_isr)
case DCD_EVENT_UNPLUGGED:
_usbd_dev.connected = 0;
_usbd_dev.addressed = 0;
_usbd_dev.configured = 0;
_usbd_dev.suspended = 0;
osal_queue_send(_usbd_q, event, in_isr);