src/platform/APM32/dma_apm32.h

   1 /*
   2  * This file is part of Betaflight.
   3  *
   4  * Betaflight is free software. You can redistribute this software
   5  * and/or modify this software under the terms of the GNU General
   6  * Public License as published by the Free Software Foundation,
   7  * either version 3 of the License, or (at your option) any later
   8  * version.
   9  *
  10  * Betaflight is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  13  *
  14  * See the GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public
  17  * License along with this software.
  18  *
  19  * If not, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22 #pragma once
  23
  24 #include "platform.h"
  25 #include "drivers/resource.h"
  26
  27 typedef enum {
  28     DMA_NONE = 0,
  29     DMA1_ST0_HANDLER = 1,
  30     DMA1_ST1_HANDLER,
  31     DMA1_ST2_HANDLER,
  32     DMA1_ST3_HANDLER,
  33     DMA1_ST4_HANDLER,
  34     DMA1_ST5_HANDLER,
  35     DMA1_ST6_HANDLER,
  36     DMA1_ST7_HANDLER,
  37     DMA2_ST0_HANDLER,
  38     DMA2_ST1_HANDLER,
  39     DMA2_ST2_HANDLER,
  40     DMA2_ST3_HANDLER,
  41     DMA2_ST4_HANDLER,
  42     DMA2_ST5_HANDLER,
  43     DMA2_ST6_HANDLER,
  44     DMA2_ST7_HANDLER,
  45     DMA_LAST_HANDLER = DMA2_ST7_HANDLER
  46 } dmaIdentifier_e;
  47
  48 #define DMA_DEVICE_NO(x)    ((((x)-1) / 8) + 1)
  49 #define DMA_DEVICE_INDEX(x) ((((x)-1) % 8))
  50 #define DMA_OUTPUT_INDEX    0
  51 #define DMA_OUTPUT_STRING   "DMA%d Stream %d:"
  52 #define DMA_INPUT_STRING    "DMA%d_ST%d"
  53
  54 #define DEFINE_DMA_CHANNEL(d, s, f) { \
  55     .dma = d, \
  56     .ref = (dmaResource_t *)d ## _Stream ## s, \
  57     .stream = s, \
  58     .irqHandlerCallback = NULL, \
  59     .flagsShift = f, \
  60     .irqN = d ## _Stream ## s ## _IRQn, \
  61     .userParam = 0, \
  62     .owner.owner = 0, \
  63     .owner.resourceIndex = 0 \
  64     }
  65
  66 #define DEFINE_DMA_IRQ_HANDLER(d, s, i) FAST_IRQ_HANDLER void DMA ## d ## _STR ## s ## _IRQHandler(void) {\
  67                                                                 const uint8_t index = DMA_IDENTIFIER_TO_INDEX(i); \
  68                                                                 dmaCallbackHandlerFuncPtr handler = dmaDescriptors[index].irqHandlerCallback; \
  69                                                                 if (handler) \
  70                                                                     handler(&dmaDescriptors[index]); \
  71                                                             }
  72
  73 #define DMA_CLEAR_FLAG(d, flag) if (d->flagsShift > 31) d->dma->HIFCLR = (flag << (d->flagsShift - 32)); else d->dma->LIFCLR = (flag << d->flagsShift)
  74 #define DMA_GET_FLAG_STATUS(d, flag) (d->flagsShift > 31 ? d->dma->HINTSTS & (flag << (d->flagsShift - 32)): d->dma->LINTSTS & (flag << d->flagsShift))
  75
  76 #define xDDL_EX_DMA_DeInit(dmaResource) DDL_EX_DMA_DeInit((DMA_ARCH_TYPE *)(dmaResource))
  77 #define xDDL_EX_DMA_Init(dmaResource, initstruct) DDL_EX_DMA_Init((DMA_ARCH_TYPE *)(dmaResource), initstruct)
  78 #define xDDL_EX_DMA_DisableResource(dmaResource) DDL_EX_DMA_DisableResource((DMA_ARCH_TYPE *)(dmaResource))
  79 #define xDDL_EX_DMA_EnableResource(dmaResource) DDL_EX_DMA_EnableResource((DMA_ARCH_TYPE *)(dmaResource))
  80 #define xDDL_EX_DMA_GetDataLength(dmaResource) DDL_EX_DMA_GetDataLength((DMA_ARCH_TYPE *)(dmaResource))
  81 #define xDDL_EX_DMA_SetDataLength(dmaResource, length) DDL_EX_DMA_SetDataLength((DMA_ARCH_TYPE *)(dmaResource), length)
  82 #define xDDL_EX_DMA_EnableIT_TC(dmaResource) DDL_EX_DMA_EnableIT_TC((DMA_ARCH_TYPE *)(dmaResource))
  83
  84 #define DMA_IT_TCIF         ((uint32_t)0x00000020)
  85 #define DMA_IT_HTIF         ((uint32_t)0x00000010)
  86 #define DMA_IT_TEIF         ((uint32_t)0x00000008)
  87 #define DMA_IT_DMEIF        ((uint32_t)0x00000004)
  88 #define DMA_IT_FEIF         ((uint32_t)0x00000001)
  89
  90 void dmaMuxEnable(dmaIdentifier_e identifier, uint32_t dmaMuxId);