diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c b/src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c index a6d92c7c0..d85adfe95 100644 --- a/src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c +++ b/src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c @@ -950,20 +950,26 @@ bool dcd_edpt_iso_alloc(uint8_t rhport, uint8_t ep_addr, uint16_t largest_packet { (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); 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); - - xfer_ctl_ptr(ep_addr)->ep_idx = ep_idx; + uint16_t pma_addr2 = pma_addr >> 16; +#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_ep_tx_address(USB, ep_idx, pma_addr & 0xFFFF); - pcd_set_ep_rx_address(USB, ep_idx, pma_addr >> 16); + xfer_ctl_ptr(ep_addr)->ep_idx = ep_idx; return true; } |