/**
* @brief De-initialize the DMA registers to their default reset values.
* @param DMAx DMAx Instance
* @param Channel This parameter can be one of the following values:
* @arg @ref LL_DMA_CHANNEL_1
* @arg @ref LL_DMA_CHANNEL_2
* @arg @ref LL_DMA_CHANNEL_3
* @arg @ref LL_DMA_CHANNEL_4
* @arg @ref LL_DMA_CHANNEL_5
* @arg @ref LL_DMA_CHANNEL_6
* @arg @ref LL_DMA_CHANNEL_7
* @retval An ErrorStatus enumeration value:
* - SUCCESS: DMA registers are de-initialized
* - ERROR: DMA registers are not de-initialized
*/
uint32_t LL_DMA_DeInit(DMA_TypeDef *DMAx, uint32_t Channel)
{
DMA_Channel_TypeDef *tmp = (DMA_Channel_TypeDef *)DMA1_Channel1;
ErrorStatus status = SUCCESS;
/* Check the DMA Instance DMAx and Channel parameters*/
assert_param(IS_LL_DMA_ALL_CHANNEL_INSTANCE(DMAx, Channel));
tmp = (DMA_Channel_TypeDef *)(__LL_DMA_GET_CHANNEL_INSTANCE(DMAx, Channel));
/* Disable the selected DMAx_Channely */
CLEAR_BIT(tmp->CCR, DMA_CCR_EN);
/* Reset DMAx_Channely control register */
LL_DMA_WriteReg(tmp, CCR, 0U);
/* Reset DMAx_Channely remaining bytes register */
LL_DMA_WriteReg(tmp, CNDTR, 0U);
/* Reset DMAx_Channely peripheral address register */
LL_DMA_WriteReg(tmp, CPAR, 0U);
/* Reset DMAx_Channely memory address register */
LL_DMA_WriteReg(tmp, CMAR, 0U);
if (Channel == LL_DMA_CHANNEL_1)
{
/* Reset interrupt pending bits for DMAx Channel1 */
LL_DMA_ClearFlag_GI1(DMAx);
}
else if (Channel == LL_DMA_CHANNEL_2)
{
/* Reset interrupt pending bits for DMAx Channel2 */
LL_DMA_ClearFlag_GI2(DMAx);
}
else if (Channel == LL_DMA_CHANNEL_3)
{
/* Reset interrupt pending bits for DMAx Channel3 */
LL_DMA_ClearFlag_GI3(DMAx);
}
else if (Channel == LL_DMA_CHANNEL_4)
{
/* Reset interrupt pending bits for DMAx Channel4 */
LL_DMA_ClearFlag_GI4(DMAx);
}
else if (Channel == LL_DMA_CHANNEL_5)
{
/* Reset interrupt pending bits for DMAx Channel5 */
LL_DMA_ClearFlag_GI5(DMAx);
}
else if (Channel == LL_DMA_CHANNEL_6)
{
/* Reset interrupt pending bits for DMAx Channel6 */
LL_DMA_ClearFlag_GI6(DMAx);
}
else if (Channel == LL_DMA_CHANNEL_7)
{
/* Reset interrupt pending bits for DMAx Channel7 */
LL_DMA_ClearFlag_GI7(DMAx);
}
else
{
status = ERROR;
}
return status;
}
/**
* @brief De-initialize the DMA registers to their default reset values.
* @param DMAx DMAx Instance
* @param Channel This parameter can be one of the following values:
* @arg @ref LL_DMA_CHANNEL_1
* @arg @ref LL_DMA_CHANNEL_2
* @arg @ref LL_DMA_CHANNEL_3
* @arg @ref LL_DMA_CHANNEL_4
* @arg @ref LL_DMA_CHANNEL_5
* @arg @ref LL_DMA_CHANNEL_6
* @arg @ref LL_DMA_CHANNEL_7
* @arg @ref LL_DMA_CHANNEL_ALL
* @retval An ErrorStatus enumeration value:
* - SUCCESS: DMA registers are de-initialized
* - ERROR: DMA registers are not de-initialized
*/
uint32_t LL_DMA_DeInit(DMA_TypeDef *DMAx, uint32_t Channel)
{
DMA_Channel_TypeDef *tmp = (DMA_Channel_TypeDef *)DMA1_Channel1;
ErrorStatus status = SUCCESS;
/* Check the DMA Instance DMAx and Channel parameters*/
assert_param(IS_LL_DMA_ALL_CHANNEL_INSTANCE(DMAx, Channel) || (Channel == LL_DMA_CHANNEL_ALL));
if (Channel == LL_DMA_CHANNEL_ALL)
{
if (DMAx == DMA1)
{
/* Force reset of DMA clock */
LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_DMA1);
/* Release reset of DMA clock */
LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_DMA1);
}
#if defined(DMA2)
else if (DMAx == DMA2)
{
/* Force reset of DMA clock */
LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_DMA2);
/* Release reset of DMA clock */
LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_DMA2);
}
#endif
else
{
status = ERROR;
}
}
else
{
tmp = (DMA_Channel_TypeDef *)(__LL_DMA_GET_CHANNEL_INSTANCE(DMAx, Channel));
/* Disable the selected DMAx_Channely */
CLEAR_BIT(tmp->CCR, DMA_CCR_EN);
/* Reset DMAx_Channely control register */
LL_DMA_WriteReg(tmp, CCR, 0U);
/* Reset DMAx_Channely remaining bytes register */
LL_DMA_WriteReg(tmp, CNDTR, 0U);
/* Reset DMAx_Channely peripheral address register */
LL_DMA_WriteReg(tmp, CPAR, 0U);
/* Reset DMAx_Channely memory address register */
LL_DMA_WriteReg(tmp, CMAR, 0U);
/* Reset Request register field for DMAx Channel */
LL_DMA_SetPeriphRequest(DMAx, Channel, LL_DMA_REQUEST_0);
if (Channel == LL_DMA_CHANNEL_1)
{
/* Reset interrupt pending bits for DMAx Channel1 */
LL_DMA_ClearFlag_GI1(DMAx);
}
else if (Channel == LL_DMA_CHANNEL_2)
{
/* Reset interrupt pending bits for DMAx Channel2 */
LL_DMA_ClearFlag_GI2(DMAx);
}
else if (Channel == LL_DMA_CHANNEL_3)
{
/* Reset interrupt pending bits for DMAx Channel3 */
LL_DMA_ClearFlag_GI3(DMAx);
}
else if (Channel == LL_DMA_CHANNEL_4)
{
/* Reset interrupt pending bits for DMAx Channel4 */
LL_DMA_ClearFlag_GI4(DMAx);
}
else if (Channel == LL_DMA_CHANNEL_5)
{
/* Reset interrupt pending bits for DMAx Channel5 */
LL_DMA_ClearFlag_GI5(DMAx);
}
else if (Channel == LL_DMA_CHANNEL_6)
{
/* Reset interrupt pending bits for DMAx Channel6 */
LL_DMA_ClearFlag_GI6(DMAx);
}
else if (Channel == LL_DMA_CHANNEL_7)
{
/* Reset interrupt pending bits for DMAx Channel7 */
LL_DMA_ClearFlag_GI7(DMAx);
}
else
{
status = ERROR;
}
}
return status;
}