src/main/drivers/stm32g4xx_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 "stm32g4xx.h"
  24 #include "common/utils.h"
  25
  26 #define DMA_CHANNEL_MASK 0xFFU
  27
  28 // As specified in RM0440 Rev 1 "11.6 DMA registers"
  29 #define DMA_FIRST_CHANNEL_OFFSET 0x08U
  30 #define DMA_CHANNEL_SIZE 0x14U
  31
  32 __STATIC_INLINE DMA_TypeDef *LL_EX_DMA_Channel_to_DMA(DMA_Channel_TypeDef *DMAx_Channely)
  33 {
  34     // clear channel address
  35     return (DMA_TypeDef *) (((uint32_t) DMAx_Channely) & ((uint32_t) ~DMA_CHANNEL_MASK));
  36 }
  37
  38 __STATIC_INLINE uint32_t LL_EX_DMA_Channel_to_Channel(DMA_Channel_TypeDef *DMAx_Channely)
  39 {
  40
  41     return (((uint32_t) DMAx_Channely & DMA_CHANNEL_MASK) - DMA_FIRST_CHANNEL_OFFSET) / DMA_CHANNEL_SIZE + 1;
  42 }
  43
  44 #undef DMA_CHANNEL_MASK
  45 #undef DMA_FIRST_CHANNEL_OFFSET
  46 #undef DMA_CHANNEL_SIZE
  47
  48 __STATIC_INLINE uint32_t LL_EX_DMA_Init(DMA_Channel_TypeDef *DMAx_Channely, LL_DMA_InitTypeDef *DMA_InitStruct) {
  49     DMA_TypeDef *DMA = LL_EX_DMA_Channel_to_DMA(DMAx_Channely);
  50     const uint32_t Channel = LL_EX_DMA_Channel_to_Channel(DMAx_Channely);
  51
  52     return LL_DMA_Init(DMA, Channel, DMA_InitStruct);
  53 }
  54
  55 __STATIC_INLINE uint32_t LL_EX_DMA_DeInit(DMA_Channel_TypeDef *DMAx_Channely) {
  56     DMA_TypeDef *DMA = LL_EX_DMA_Channel_to_DMA(DMAx_Channely);
  57     const uint32_t Channel = LL_EX_DMA_Channel_to_Channel(DMAx_Channely);
  58
  59     return LL_DMA_DeInit(DMA, Channel);
  60 }
  61
  62 __STATIC_INLINE void LL_EX_DMA_EnableResource(DMA_Channel_TypeDef *DMAx_Channely)
  63 {
  64     SET_BIT(DMAx_Channely->CCR, DMA_CCR_EN);
  65 }
  66
  67 __STATIC_INLINE void LL_EX_DMA_DisableResource(DMA_Channel_TypeDef *DMAx_Channely)
  68 {
  69     CLEAR_BIT(DMAx_Channely->CCR, DMA_CCR_EN);
  70 }
  71
  72 __STATIC_INLINE void LL_EX_DMA_EnableIT_TC(DMA_Channel_TypeDef *DMAx_Channely)
  73 {
  74     SET_BIT(DMAx_Channely->CCR, DMA_CCR_TCIE);
  75 }
  76
  77 __STATIC_INLINE void LL_EX_DMA_SetDataLength(DMA_Channel_TypeDef* DMAx_Channely, uint32_t NbData)
  78 {
  79     MODIFY_REG(DMAx_Channely->CNDTR, DMA_CNDTR_NDT, NbData);
  80 }
  81
  82 __STATIC_INLINE uint32_t LL_EX_DMA_GetDataLength(DMA_Channel_TypeDef* DMAx_Channely)
  83 {
  84     return READ_BIT(DMAx_Channely->CNDTR, DMA_CNDTR_NDT);
  85 }
  86
  87 __STATIC_INLINE void LL_EX_TIM_EnableIT(TIM_TypeDef *TIMx, uint32_t Sources)
  88 {
  89     SET_BIT(TIMx->DIER, Sources);
  90 }
  91
  92 __STATIC_INLINE void LL_EX_TIM_DisableIT(TIM_TypeDef *TIMx, uint32_t Sources)
  93 {
  94     CLEAR_BIT(TIMx->DIER, Sources);
  95 }
  96
  97 __STATIC_INLINE void LL_EX_TIM_CC_EnableNChannel(TIM_TypeDef *TIMx, uint32_t Channel)
  98 {
  99     LL_TIM_CC_EnableChannel(TIMx, 4 * Channel);
 100 }