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move walkaround to dcd_ep_ctr_rx_handler(), increase cycle_count from 10 to 20 (40 cycle)

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hathach
2024-03-31 21:53:12 +07:00
parent 27afa56844
commit fc54ad43b1
3 changed files with 34 additions and 31 deletions
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10
src/portable/st/stm32_fsdev/dcd_stm32_fsdev.h
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@@ -286,16 +286,6 @@ TU_ATTR_ALWAYS_INLINE static inline uint32_t pcd_get_ep_tx_cnt(USB_TypeDef * USB
TU_ATTR_ALWAYS_INLINE static inline uint32_t pcd_get_ep_rx_cnt(USB_TypeDef * USBx, uint32_t bEpIdx) {
#ifdef FSDEV_BUS_32BIT
(void) USBx;
/* WA: few cycles for RX PMA descriptor to update, otherwise doesn't return the correct value.
Note: required for G0, U5, H5 etc.
This workaround is ported from stm32h5xx_hal_pcd.h and fixes the issue when calling this function fast enough.
Reproduced with GCC ast optimization(O2/O3) and stm32h573i_dk with an high frequency.
Observed on Windows 10 where tud_task() is scheduled by interrupt handler.
*/
volatile uint32_t count = 10; // defined as PCD_RX_PMA_CNT in stm32 hal_driver
while (count > 0U) {
count--;
}
return (pma32[2*bEpIdx + 1] & 0x03FF0000) >> 16;
#else
__I uint16_t *regPtr = pcd_ep_rx_cnt_ptr(USBx, bEpIdx);