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     DMA_TypeDef *DMA = LL_EX_DMA_Stream_to_DMA(DMAx_Streamy);
  52     const uint32_t Stream = LL_EX_DMA_Stream_to_Stream(DMAx_Streamy);
  53
  54     return LL_DMA_Init(DMA, Stream, DMA_InitStruct);
  55 }
  56
  57 __STATIC_INLINE uint32_t LL_EX_DMA_DeInit(DMA_Stream_TypeDef *DMAx_Streamy) {
  58     DMA_TypeDef *DMA = LL_EX_DMA_Stream_to_DMA(DMAx_Streamy);
  59     const uint32_t Stream = LL_EX_DMA_Stream_to_Stream(DMAx_Streamy);
  60
  61     return LL_DMA_DeInit(DMA, Stream);
  62 }
  63
  64 __STATIC_INLINE void LL_EX_DMA_EnableResource(DMA_Stream_TypeDef *DMAx_Streamy)
  65 {
  66     SET_BIT(DMAx_Streamy->CR, DMA_SxCR_EN);
  67 }
  68
  69 __STATIC_INLINE void LL_EX_DMA_DisableResource(DMA_Stream_TypeDef *DMAx_Streamy)
  70 {
  71     CLEAR_BIT(DMAx_Streamy->CR, DMA_SxCR_EN);
  72 }
  73
  74 __STATIC_INLINE void LL_EX_DMA_EnableIT_TC(DMA_Stream_TypeDef *DMAx_Streamy)
  75 {
  76     SET_BIT(DMAx_Streamy->CR, DMA_SxCR_TCIE);
  77 }
  78
  79 __STATIC_INLINE void LL_EX_DMA_SetDataLength(DMA_Stream_TypeDef* DMAx_Streamy, uint32_t NbData)
  80 {
  81     MODIFY_REG(DMAx_Streamy->NDTR, DMA_SxNDT, NbData);
  82 }
  83
  84 __STATIC_INLINE uint32_t LL_EX_DMA_GetDataLength(DMA_Stream_TypeDef* DMAx_Streamy)
  85 {
  86     DMA_TypeDef *DMA = LL_EX_DMA_Stream_to_DMA(DMAx_Streamy);
  87     const uint32_t Stream = LL_EX_DMA_Stream_to_Stream(DMAx_Streamy);
  88     return LL_DMA_GetDataLength(DMA, Stream);
  89 }
  90
  91 __STATIC_INLINE void LL_EX_TIM_EnableIT(TIM_TypeDef *TIMx, uint32_t Sources)
  92 {
  93     SET_BIT(TIMx->DIER, Sources);
  94 }
  95
  96 __STATIC_INLINE void LL_EX_TIM_DisableIT(TIM_TypeDef *TIMx, uint32_t Sources)
  97 {
  98     CLEAR_BIT(TIMx->DIER, Sources);
  99 }
 100
 101 __STATIC_INLINE void LL_EX_TIM_CC_EnableNChannel(TIM_TypeDef *TIMx, uint32_t Channel)
 102 {
 103     LL_TIM_CC_EnableChannel(TIMx, 4 * Channel);
 104 }