You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
43 lines
1.5 KiB
43 lines
1.5 KiB
/** @addtogroup dma_file
|
|
*/
|
|
/*
|
|
* This file is part of the libopencm3 project.
|
|
*
|
|
* Copyright (C) 2019 Guillaume Revaillot <g.revaillot@gmail.com>
|
|
*
|
|
* This library is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Lesser General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with this library. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/**@{*/
|
|
|
|
#include <libopencm3/stm32/dma.h>
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
/** @brief DMA Channel Set Request Selection
|
|
|
|
Set DMA request mapping selection for given channel. Refer to datasheet for channel
|
|
request mapping tables.
|
|
|
|
@param[in] dma DMA controller base address: DMA1 or DMA2
|
|
@param[in] channel Channel number: 1-7 for DMA1 or 1-5 for DMA2
|
|
@param[in] request DMA request mapping.
|
|
*/
|
|
|
|
void dma_set_channel_request(uint32_t dma, uint8_t channel, uint8_t request)
|
|
{
|
|
uint32_t reg32 = DMA_CSELR(dma) & ~(DMA_CSELR_CxS_MASK << DMA_CSELR_CxS_SHIFT(channel));
|
|
DMA_CSELR(dma) = reg32 | ((DMA_CSELR_CxS_MASK & request) << DMA_CSELR_CxS_SHIFT(channel));
|
|
}
|
|
|
|
/**@}*/
|
|
|