Hi Johan,
it is rather similar to F1, just some different names for DMA stuff.
You can probably start from a F1 example:
https://github.com/libopencm3/libopencm3-examples/blob/master/examples/stm32/f1/lisa-m-2/spi_dma/spi_dma.c
and make the changes for F4 (dma_stream_x instead of dma_channel_x).
See e.g.
https://github.com/paparazzi/paparazzi/blob/master/sw/airborne/arch/stm32/mcu_periph/spi_arch.c
for bit more advanced version using DMA on F1 and F4.
Hope that helps,
Felix
On Wed, Jan 28, 2015 at 3:35 PM, Johan <kungjo...@gmail.com> wrote:
> I am using SPI on my STM32F4 Discovery board together with libopencm3.
>
> The function I use is spi_send located in spi_common_all.c
> This function is blocking and sends one byte(short) at a time.
>
> I wonder if there is some driver/API in libopencm3 to use SPI on STM32F4
> in interrupt or DMA mode?
>
> Best regards
> Johan
>
>
>
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