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Skeleton, and initial stm32fsdev implementation (that leaks memory)

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This commit is contained in:
Nathan Conrad
2020-04-12 21:07:17 -04:00
parent 2ff3f765db
commit 0eeaccaf46
5 changed files with 111 additions and 2 deletions
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37
src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c
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@@ -69,7 +69,6 @@
* - Endpoint index is the ID of the endpoint
* - This means that priority is given to endpoints with lower ID numbers
* - Code is mixing up EP IX with EP ID. Everywhere.
* - No way to close endpoints; Can a device be reconfigured without a reset?
* - Packet buffer memory is copied in the interrupt.
* - This is better for performance, but means interrupts are disabled for longer
* - DMA may be the best choice, but it could also be pushed to the USBD task.
@@ -623,6 +622,7 @@ bool dcd_edpt_open (uint8_t rhport, tusb_desc_endpoint_t const * p_endpoint_desc
if(dir == TUSB_DIR_IN)
{
// FIXME: use pma_alloc to allocate memory dynamically
*pcd_ep_tx_address_ptr(USB, epnum) = ep_buf_ptr;
pcd_set_ep_tx_cnt(USB, epnum, p_endpoint_desc->wMaxPacketSize.size);
pcd_clear_tx_dtog(USB, epnum);
@@ -630,6 +630,7 @@ bool dcd_edpt_open (uint8_t rhport, tusb_desc_endpoint_t const * p_endpoint_desc
}
else
{
// FIXME: use pma_alloc to allocate memory dynamically
*pcd_ep_rx_address_ptr(USB, epnum) = ep_buf_ptr;
pcd_set_ep_rx_cnt(USB, epnum, p_endpoint_desc->wMaxPacketSize.size);
pcd_clear_rx_dtog(USB, epnum);
@@ -642,6 +643,40 @@ bool dcd_edpt_open (uint8_t rhport, tusb_desc_endpoint_t const * p_endpoint_desc
return true;
}
/**
* Close an endpoint.
*
* This function should be called with interrupts enabled, though
* this implementation should be valid with them disabled, too.
* This also clears transfers in progress, should there be any.
*/
void dcd_edpt_close (uint8_t rhport, uint8_t ep_addr)
{
(void)rhport;
uint32_t const epnum = tu_edpt_number(ep_addr);
uint32_t const dir = tu_edpt_dir(ep_addr);
#ifndef NDEBUG
TU_ASSERT(epnum < MAX_EP_COUNT, /**/);
#endif
//uint16_t memptr;
if(dir == TUSB_DIR_IN)
{
pcd_set_ep_tx_status(USB,epnum,USB_EP_TX_DIS);
//memptr = *pcd_ep_tx_address_ptr(USB, epnum);
}
else
{
pcd_set_ep_rx_status(USB, epnum, USB_EP_RX_DIS);
//memptr = *pcd_ep_rx_address_ptr(USB, epnum);
}
// FIXME: Free memory
// pma_free(memptr);
}
// Currently, single-buffered, and only 64 bytes at a time (max)
static void dcd_transmit_packet(xfer_ctl_t * xfer, uint16_t ep_ix)