src/main/drivers/stm32h7xx_ll_ex.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 "stm32h7xx.h"
  24 #include "common/utils.h"
  25
  26 // XXX Followings are straight copy of stm32f7xx_ll_ex.h.
  27 // XXX Consider consolidation when LL-DShot is stable.
  28
  29 #define DMA_STREAM_MASK 0xFFU
  30
  31 __STATIC_INLINE DMA_TypeDef *LL_EX_DMA_Stream_to_DMA(DMA_Stream_TypeDef *DMAx_Streamy)
  32 {
  33     // clear stream address
  34     return (DMA_TypeDef *) (((uint32_t) DMAx_Streamy) & ((uint32_t) ~DMA_STREAM_MASK));
  35 }
  36
  37 __STATIC_INLINE uint32_t LL_EX_DMA_Stream_to_Stream(DMA_Stream_TypeDef *DMAx_Streamy)
  38 {
  39     STATIC_ASSERT(DMA1_Stream0_BASE - DMA1_BASE == sizeof(DMA_TypeDef), DMA_TypeDef_has_padding);
  40     STATIC_ASSERT(DMA1_Stream1_BASE - DMA1_Stream0_BASE == sizeof(DMA_Stream_TypeDef), DMA_Stream_TypeDef_has_padding);
  41
  42     const size_t firstStreamOffset = sizeof(DMA_TypeDef);
  43     const size_t streamSize = sizeof(DMA_Stream_TypeDef);
  44
  45     return (((uint32_t) DMAx_Streamy & DMA_STREAM_MASK) - firstStreamOffset) / streamSize;
  46 }
  47
  48 #undef DMA_STREAM_MASK
  49
  50 __STATIC_INLINE uint32_t LL_EX_DMA_Init(DMA_Stream_TypeDef *DMAx_Streamy, LL_DMA_InitTypeDef *DMA_InitStruct)
  51 {
  52     DMA_TypeDef *DMA = LL_EX_DMA_Stream_to_DMA(DMAx_Streamy);
  53     const uint32_t Stream = LL_EX_DMA_Stream_to_Stream(DMAx_Streamy);
  54
  55     return LL_DMA_Init(DMA, Stream, DMA_InitStruct);
  56 }
  57
  58 __STATIC_INLINE uint32_t LL_EX_DMA_DeInit(DMA_Stream_TypeDef *DMAx_Streamy)
  59 {
  60     DMA_TypeDef *DMA = LL_EX_DMA_Stream_to_DMA(DMAx_Streamy);
  61     const uint32_t Stream = LL_EX_DMA_Stream_to_Stream(DMAx_Streamy);
  62
  63     return LL_DMA_DeInit(DMA, Stream);
  64 }
  65
  66 __STATIC_INLINE void LL_EX_DMA_EnableResource(DMA_Stream_TypeDef *DMAx_Streamy)
  67 {
  68     SET_BIT(DMAx_Streamy->CR, DMA_SxCR_EN);
  69 }
  70
  71 __STATIC_INLINE void LL_EX_DMA_DisableResource(DMA_Stream_TypeDef *DMAx_Streamy)
  72 {
  73     CLEAR_BIT(DMAx_Streamy->CR, DMA_SxCR_EN);
  74 }
  75
  76 __STATIC_INLINE void LL_EX_DMA_EnableIT_TC(DMA_Stream_TypeDef *DMAx_Streamy)
  77 {
  78     SET_BIT(DMAx_Streamy->CR, DMA_SxCR_TCIE);
  79 }
  80
  81 __STATIC_INLINE void LL_EX_DMA_SetDataLength(DMA_Stream_TypeDef* DMAx_Streamy, uint32_t NbData)
  82 {
  83     MODIFY_REG(DMAx_Streamy->NDTR, DMA_SxNDT, NbData);
  84 }
  85
  86 __STATIC_INLINE uint32_t LL_EX_DMA_GetDataLength(DMA_Stream_TypeDef* DMAx_Streamy)
  87 {
  88     DMA_TypeDef *DMA = LL_EX_DMA_Stream_to_DMA(DMAx_Streamy);
  89     const uint32_t Stream = LL_EX_DMA_Stream_to_Stream(DMAx_Streamy);
  90     return LL_DMA_GetDataLength(DMA, Stream);
  91 }
  92
  93 __STATIC_INLINE void LL_EX_TIM_EnableIT(TIM_TypeDef *TIMx, uint32_t Sources)
  94 {
  95     SET_BIT(TIMx->DIER, Sources);
  96 }
  97
  98 __STATIC_INLINE void LL_EX_TIM_DisableIT(TIM_TypeDef *TIMx, uint32_t Sources)
  99 {
 100     CLEAR_BIT(TIMx->DIER, Sources);
 101 }
 102
 103 __STATIC_INLINE void LL_EX_TIM_CC_EnableNChannel(TIM_TypeDef *TIMx, uint32_t Channel)
 104 {
 105     LL_TIM_CC_EnableChannel(TIMx, 4 * Channel);
 106 }