diff options
| -rw-r--r-- | os/hal/ports/STM32/LLD/DMAv2/stm32_dma.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/os/hal/ports/STM32/LLD/DMAv2/stm32_dma.h b/os/hal/ports/STM32/LLD/DMAv2/stm32_dma.h index d0ec96864..3d8c08f13 100644 --- a/os/hal/ports/STM32/LLD/DMAv2/stm32_dma.h +++ b/os/hal/ports/STM32/LLD/DMAv2/stm32_dma.h @@ -648,6 +648,20 @@ typedef void (*stm32_dmaisr_t)(void *p, uint32_t flags); ; \
dmaStreamClearInterrupt(dmastp); \
}
+
+/**
+ * @brief DMA stream current target.
+ * @note This function can be invoked in both ISR or thread context.
+ * @pre The stream must have been allocated using @p dmaStreamAllocate().
+ * @post After use the stream can be released using @p dmaStreamRelease().
+ *
+ * @param[in] dmastp pointer to a stm32_dma_stream_t structure
+ * @return Current memory target index.
+ *
+ * @special
+ */
+#define dmaStreamGetCurrentTarget(dmastp) \
+ (((dmastp)->stream->CR >> DMA_SxCR_CT_Pos) & 1U)
/** @} */
/*===========================================================================*/
|