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Enable double buffer only for PMA > 1024b

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This commit is contained in:
HiFiPhile
2024-04-09 22:15:18 +02:00
parent 472996e2bf
commit c0824472e8
1 changed files with 12 additions and 6 deletions
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18
src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c
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@@ -950,20 +950,26 @@ bool dcd_edpt_iso_alloc(uint8_t rhport, uint8_t ep_addr, uint16_t largest_packet
{ {
(void)rhport; (void)rhport;
TU_ASSERT(largest_packet_size <= 1024); TU_ASSERT(largest_packet_size < 1024);
uint8_t const ep_idx = dcd_ep_alloc(ep_addr, TUSB_XFER_ISOCHRONOUS); uint8_t const ep_idx = dcd_ep_alloc(ep_addr, TUSB_XFER_ISOCHRONOUS);
const uint16_t buffer_size = pcd_aligned_buffer_size(largest_packet_size); const uint16_t buffer_size = pcd_aligned_buffer_size(largest_packet_size);
/* Create a packet memory buffer area. Enable double buffering */ /* Create a packet memory buffer area. Enable double buffering for devices with 2048 bytes PMA,
for smaller devices double buffering occupy too much space. */
#if FSDEV_PMA_SIZE > 1024u
uint32_t pma_addr = dcd_pma_alloc(ep_addr, buffer_size, true); uint32_t pma_addr = dcd_pma_alloc(ep_addr, buffer_size, true);
uint16_t pma_addr2 = pma_addr >> 16;
xfer_ctl_ptr(ep_addr)->ep_idx = ep_idx; #else
uint32_t pma_addr = dcd_pma_alloc(ep_addr, buffer_size, true);
uint16_t pma_addr2 = pma_addr;
#endif
pcd_set_ep_tx_address(USB, ep_idx, pma_addr);
pcd_set_ep_rx_address(USB, ep_idx, pma_addr2);
pcd_set_eptype(USB, ep_idx, USB_EP_ISOCHRONOUS); pcd_set_eptype(USB, ep_idx, USB_EP_ISOCHRONOUS);
pcd_set_ep_tx_address(USB, ep_idx, pma_addr & 0xFFFF); xfer_ctl_ptr(ep_addr)->ep_idx = ep_idx;
pcd_set_ep_rx_address(USB, ep_idx, pma_addr >> 16);
return true; return true;
} }