src/main/drivers/dma_reqmap.h

   1 /*
   2  * This file is part of Cleanflight and Betaflight.
   3  *
   4  * Cleanflight and Betaflight are free software. You can redistribute
   5  * this software and/or modify this software under the terms of the
   6  * GNU General Public License as published by the Free Software
   7  * Foundation, either version 3 of the License, or (at your option)
   8  * any later version.
   9  *
  10  * Cleanflight and Betaflight are distributed in the hope that they
  11  * will be useful, but WITHOUT ANY WARRANTY; without even the implied
  12  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  13  * See the GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this software.
  17  *
  18  * If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #pragma once
  22
  23 #include "platform.h"
  24
  25 #include "drivers/dma.h"
  26 #include "drivers/timer.h"
  27
  28 #include "dma_reqmap_mcu.h"
  29
  30 typedef uint16_t dmaCode_t;
  31
  32 typedef struct dmaChannelSpec_s {
  33     dmaCode_t             code;
  34     dmaResource_t         *ref;
  35 #if defined(USE_DMA_MUX)
  36     uint32_t              dmaMuxId;
  37 #else
  38     uint32_t              channel;
  39 #endif
  40 } dmaChannelSpec_t;
  41
  42 #define DMA_CODE(dma, stream, chanreq) ((dma << 12)|(stream << 8)|(chanreq << 0))
  43 #define DMA_CODE_CONTROLLER(code) ((code >> 12) & 0xf)
  44 #define DMA_CODE_STREAM(code) ((code >> 8) & 0xf)
  45 #define DMA_CODE_CHANNEL(code) ((code >> 0) & 0xff)
  46 #define DMA_CODE_REQUEST(code) DMA_CODE_CHANNEL(code)
  47
  48 typedef enum {
  49     DMA_PERIPH_SPI_SDO,
  50     DMA_PERIPH_SPI_SDI,
  51     DMA_PERIPH_ADC,
  52     DMA_PERIPH_SDIO,
  53     DMA_PERIPH_UART_TX,   // LPUART is handled as UART
  54     DMA_PERIPH_UART_RX,
  55     DMA_PERIPH_TIMUP,
  56 } dmaPeripheral_e;
  57
  58 typedef int8_t dmaoptValue_t;
  59
  60 #define DMA_OPT_UNUSED (-1)
  61
  62 struct timerHardware_s;
  63
  64 dmaoptValue_t dmaoptByTag(ioTag_t ioTag);
  65 const dmaChannelSpec_t *dmaGetChannelSpecByPeripheral(dmaPeripheral_e device, uint8_t index, int8_t opt);
  66 const dmaChannelSpec_t *dmaGetChannelSpecByTimerValue(TIM_TypeDef *tim, uint8_t channel, dmaoptValue_t dmaopt);
  67 const dmaChannelSpec_t *dmaGetChannelSpecByTimer(const struct timerHardware_s *timer);
  68 dmaoptValue_t dmaGetOptionByTimer(const struct timerHardware_s *timer);
  69 dmaoptValue_t dmaGetUpOptionByTimer(const struct timerHardware_s *timer);