diff options
| -rw-r--r-- | ports/stm32/fdcan.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/ports/stm32/fdcan.c b/ports/stm32/fdcan.c index bafc7e3f5..3ab72cdac 100644 --- a/ports/stm32/fdcan.c +++ b/ports/stm32/fdcan.c @@ -200,17 +200,21 @@ void can_clearfilter(pyb_can_obj_t *self, uint32_t f, uint8_t bank) { int can_receive(FDCAN_HandleTypeDef *can, int fifo, FDCAN_RxHeaderTypeDef *hdr, uint8_t *data, uint32_t timeout_ms) { volatile uint32_t *rxf, *rxa; + uint32_t fl; + if (fifo == FDCAN_RX_FIFO0) { rxf = &can->Instance->RXF0S; rxa = &can->Instance->RXF0A; + fl = FDCAN_RXF0S_F0FL; } else { rxf = &can->Instance->RXF1S; rxa = &can->Instance->RXF1A; + fl = FDCAN_RXF1S_F1FL; } // Wait for a message to become available, with timeout uint32_t start = HAL_GetTick(); - while ((*rxf & 7) == 0) { + while ((*rxf & fl) == 0) { MICROPY_EVENT_POLL_HOOK if (HAL_GetTick() - start >= timeout_ms) { return -MP_ETIMEDOUT; |