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extra common edpt helper for device and host stack

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tu_edpt_validate() and tu_edpt_bind_driver()
This commit is contained in:
hathach
2021-08-20 18:01:10 +07:00
parent aab133ac69
commit 1cef2b6a42
5 changed files with 265 additions and 209 deletions
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62
src/tusb.c
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@@ -63,6 +63,68 @@ bool tusb_inited(void)
return ret;
}
//--------------------------------------------------------------------+
// Internal Helper for both Host and Device stack
//--------------------------------------------------------------------+
bool tu_edpt_validate(tusb_desc_endpoint_t const * desc_ep, tusb_speed_t speed)
{
uint16_t const max_packet_size = tu_le16toh(desc_ep->wMaxPacketSize.size);
TU_LOG2(" Open EP %02X with Size = %u\r\n", desc_ep->bEndpointAddress, max_packet_size);
switch (desc_ep->bmAttributes.xfer)
{
case TUSB_XFER_ISOCHRONOUS:
{
uint16_t const spec_size = (speed == TUSB_SPEED_HIGH ? 1024 : 1023);
TU_ASSERT(max_packet_size <= spec_size);
}
break;
case TUSB_XFER_BULK:
if (speed == TUSB_SPEED_HIGH)
{
// Bulk highspeed must be EXACTLY 512
TU_ASSERT(max_packet_size == 512);
}else
{
// TODO Bulk fullspeed can only be 8, 16, 32, 64
TU_ASSERT(max_packet_size <= 64);
}
break;
case TUSB_XFER_INTERRUPT:
{
uint16_t const spec_size = (speed == TUSB_SPEED_HIGH ? 1024 : 64);
TU_ASSERT(max_packet_size <= spec_size);
}
break;
default: return false;
}
return true;
}
void tu_edpt_bind_driver(uint8_t ep2drv[][2], tusb_desc_interface_t const* desc_itf, uint16_t desc_len, uint8_t driver_id)
{
uint8_t const* p_desc = (uint8_t const*) desc_itf;
uint16_t len = 0;
while( len < desc_len )
{
if ( TUSB_DESC_ENDPOINT == tu_desc_type(p_desc) )
{
uint8_t const ep_addr = ((tusb_desc_endpoint_t const*) p_desc)->bEndpointAddress;
ep2drv[tu_edpt_number(ep_addr)][tu_edpt_dir(ep_addr)] = driver_id;
}
len = (uint16_t)(len + tu_desc_len(p_desc));
p_desc = tu_desc_next(p_desc);
}
}
/*------------------------------------------------------------------*/
/* Debug
*------------------------------------------------------------------*/