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stm32: add dma_get_number_of_data

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Original discussion at: https://github.com/libopencm3/libopencm3/pull/702
This commit is contained in:
Daniel Gröber 2017-01-13 13:57:42 +01:00 committed by Karl Palsson
parent 824beaa472
commit 743513a4b1
4 changed files with 30 additions and 0 deletions
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1
include/libopencm3/stm32/common/dma_common_f24.h
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@ -613,6 +613,7 @@ void dma_disable_stream(uint32_t dma, uint8_t stream);
void dma_set_peripheral_address(uint32_t dma, uint8_t stream, uint32_t address); void dma_set_peripheral_address(uint32_t dma, uint8_t stream, uint32_t address);
void dma_set_memory_address(uint32_t dma, uint8_t stream, uint32_t address); void dma_set_memory_address(uint32_t dma, uint8_t stream, uint32_t address);
void dma_set_memory_address_1(uint32_t dma, uint8_t stream, uint32_t address); void dma_set_memory_address_1(uint32_t dma, uint8_t stream, uint32_t address);
uint16_t dma_get_number_of_data(uint32_t dma, uint8_t stream);
void dma_set_number_of_data(uint32_t dma, uint8_t stream, uint16_t number); void dma_set_number_of_data(uint32_t dma, uint8_t stream, uint16_t number);
END_DECLS END_DECLS

1
include/libopencm3/stm32/common/dma_common_l1f013.h
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@ -410,6 +410,7 @@ void dma_disable_channel(uint32_t dma, uint8_t channel);
void dma_set_peripheral_address(uint32_t dma, uint8_t channel, void dma_set_peripheral_address(uint32_t dma, uint8_t channel,
uint32_t address); uint32_t address);
void dma_set_memory_address(uint32_t dma, uint8_t channel, uint32_t address); void dma_set_memory_address(uint32_t dma, uint8_t channel, uint32_t address);
uint16_t dma_get_number_of_data(uint32_t dma, uint8_t channel);
void dma_set_number_of_data(uint32_t dma, uint8_t channel, uint16_t number); void dma_set_number_of_data(uint32_t dma, uint8_t channel, uint16_t number);
END_DECLS END_DECLS

14
lib/stm32/common/dma_common_f24.c
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@ -774,6 +774,20 @@ void dma_set_memory_address_1(uint32_t dma, uint8_t stream, uint32_t address)
} }
} }
/*---------------------------------------------------------------------------*/
/** @brief DMA Stream Get the Transfer Block Size
@param[in] dma unsigned int32. DMA controller base address: DMA1 or DMA2
@param[in] stream unsigned int8. Stream number: @ref dma_st_number
@returns unsigned int16. Number of remaining data words to transfer (65535
maximum).
*/
uint16_t dma_get_number_of_data(uint32_t dma, uint8_t stream)
{
return DMA_SNDTR(dma, stream);
}
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
/** @brief DMA Stream Set the Transfer Block Size /** @brief DMA Stream Set the Transfer Block Size

14
lib/stm32/common/dma_common_l1f013.c
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@ -415,6 +415,20 @@ void dma_set_memory_address(uint32_t dma, uint8_t channel, uint32_t address)
} }
} }
/*---------------------------------------------------------------------------*/
/** @brief DMA Channel Get the Transfer Block Size
@param[in] dma unsigned int32. DMA controller base address: DMA1 or DMA2
@param[in] channel unsigned int8. Channel number: 1-7 for DMA1 or 1-5 for DMA2
@returns unsigned int16. Number of remaining data words to transfer (65535
maximum).
*/
uint16_t dma_get_number_of_data(uint32_t dma, uint8_t channel)
{
return DMA_CNDTR(dma, channel);
}
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
/** @brief DMA Channel Set the Transfer Block Size /** @brief DMA Channel Set the Transfer Block Size