/** ****************************************************************************** * @file stm32f10x_dma.c * @author MCD Application Team * @version V3.5.0 * @date 11-March-2011 * @brief This file provides all the DMA firmware functions. ****************************************************************************** * @attention * * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. * *

© COPYRIGHT 2011 STMicroelectronics

****************************************************************************** */ /* Includes ------------------------------------------------------------------*/ #include "stm32f10x_dma.h" #include "stm32f10x_rcc.h" /** @addtogroup STM32F10x_StdPeriph_Driver * @{ */ /** @defgroup DMA * @brief DMA driver modules * @{ */ /** @defgroup DMA_Private_TypesDefinitions * @{ */ /** * @} */ /** @defgroup DMA_Private_Defines * @{ */ /* DMA1 Channelx interrupt pending bit masks */ #define DMA1_Channel1_IT_Mask ((uint32_t)(DMA_ISR_GIF1 | DMA_ISR_TCIF1 | DMA_ISR_HTIF1 | DMA_ISR_TEIF1)) #define DMA1_Channel2_IT_Mask ((uint32_t)(DMA_ISR_GIF2 | DMA_ISR_TCIF2 | DMA_ISR_HTIF2 | DMA_ISR_TEIF2)) #define DMA1_Channel3_IT_Mask ((uint32_t)(DMA_ISR_GIF3 | DMA_ISR_TCIF3 | DMA_ISR_HTIF3 | DMA_ISR_TEIF3)) #define DMA1_Channel4_IT_Mask ((uint32_t)(DMA_ISR_GIF4 | DMA_ISR_TCIF4 | DMA_ISR_HTIF4 | DMA_ISR_TEIF4)) #define DMA1_Channel5_IT_Mask ((uint32_t)(DMA_ISR_GIF5 | DMA_ISR_TCIF5 | DMA_ISR_HTIF5 | DMA_ISR_TEIF5)) #define DMA1_Channel6_IT_Mask ((uint32_t)(DMA_ISR_GIF6 | DMA_ISR_TCIF6 | DMA_ISR_HTIF6 | DMA_ISR_TEIF6)) #define DMA1_Channel7_IT_Mask ((uint32_t)(DMA_ISR_GIF7 | DMA_ISR_TCIF7 | DMA_ISR_HTIF7 | DMA_ISR_TEIF7)) /* DMA2 Channelx interrupt pending bit masks */ #define DMA2_Channel1_IT_Mask ((uint32_t)(DMA_ISR_GIF1 | DMA_ISR_TCIF1 | DMA_ISR_HTIF1 | DMA_ISR_TEIF1)) #define DMA2_Channel2_IT_Mask ((uint32_t)(DMA_ISR_GIF2 | DMA_ISR_TCIF2 | DMA_ISR_HTIF2 | DMA_ISR_TEIF2)) #define DMA2_Channel3_IT_Mask ((uint32_t)(DMA_ISR_GIF3 | DMA_ISR_TCIF3 | DMA_ISR_HTIF3 | DMA_ISR_TEIF3)) #define DMA2_Channel4_IT_Mask ((uint32_t)(DMA_ISR_GIF4 | DMA_ISR_TCIF4 | DMA_ISR_HTIF4 | DMA_ISR_TEIF4)) #define DMA2_Channel5_IT_Mask ((uint32_t)(DMA_ISR_GIF5 | DMA_ISR_TCIF5 | DMA_ISR_HTIF5 | DMA_ISR_TEIF5)) /* DMA2 FLAG mask */ #define FLAG_Mask ((uint32_t)0x10000000) /* DMA registers Masks */ #define CCR_CLEAR_Mask ((uint32_t)0xFFFF800F) /** * @} */ /** @defgroup DMA_Private_Macros * @{ */ /** * @} */ /** @defgroup DMA_Private_Variables * @{ */ /** * @} */ /** @defgroup DMA_Private_FunctionPrototypes * @{ */ /** * @} */ /** @defgroup DMA_Private_Functions * @{ */ /** * @brief Deinitializes the DMAy Channelx registers to their default reset * values. * @param DMAy_Channelx: where y can be 1 or 2 to select the DMA and * x can be 1 to 7 for DMA1 and 1 to 5 for DMA2 to select the DMA Channel. * @retval None */ void DMA_DeInit(DMA_Channel_TypeDef* DMAy_Channelx) { /* Check the parameters */ assert_param(IS_DMA_ALL_PERIPH(DMAy_Channelx)); /* Disable the selected DMAy Channelx */ DMAy_Channelx->CCR &= (uint16_t)(~DMA_CCR1_EN); /* Reset DMAy Channelx control register */ DMAy_Channelx->CCR = 0; /* Reset DMAy Channelx remaining bytes register */ DMAy_Channelx->CNDTR = 0; /* Reset DMAy Channelx peripheral address register */ DMAy_Channelx->CPAR = 0; /* Reset DMAy Channelx memory address register */ DMAy_Channelx->CMAR = 0; if (DMAy_Channelx == DMA1_Channel1) { /* Reset interrupt pending bits for DMA1 Channel1 */ DMA1->IFCR |= DMA1_Channel1_IT_Mask; } else if (DMAy_Channelx == DMA1_Channel2) { /* Reset interrupt pending bits for DMA1 Channel2 */ DMA1->IFCR |= DMA1_Channel2_IT_Mask; } else if (DMAy_Channelx == DMA1_Channel3) { /* Reset interrupt pending bits for DMA1 Channel3 */ DMA1->IFCR |= DMA1_Channel3_IT_Mask; } else if (DMAy_Channelx == DMA1_Channel4) { /* Reset interrupt pending bits for DMA1 Channel4 */ DMA1->IFCR |= DMA1_Channel4_IT_Mask; } else if (DMAy_Channelx == DMA1_Channel5) { /* Reset interrupt pending bits for DMA1 Channel5 */ DMA1->IFCR |= DMA1_Channel5_IT_Mask; } else if (DMAy_Channelx == DMA1_Channel6) { /* Reset interrupt pending bits for DMA1 Channel6 */ DMA1->IFCR |= DMA1_Channel6_IT_Mask; } else if (DMAy_Channelx == DMA1_Channel7) { /* Reset interrupt pending bits for DMA1 Channel7 */ DMA1->IFCR |= DMA1_Channel7_IT_Mask; } else if (DMAy_Channelx == DMA2_Channel1) { /* Reset interrupt pending bits for DMA2 Channel1 */ DMA2->IFCR |= DMA2_Channel1_IT_Mask; } else if (DMAy_Channelx == DMA2_Channel2) { /* Reset interrupt pending bits for DMA2 Channel2 */ DMA2->IFCR |= DMA2_Channel2_IT_Mask; } else if (DMAy_Channelx == DMA2_Channel3) { /* Reset interrupt pending bits for DMA2 Channel3 */ DMA2->IFCR |= DMA2_Channel3_IT_Mask; } else if (DMAy_Channelx == DMA2_Channel4) { /* Reset interrupt pending bits for DMA2 Channel4 */ DMA2->IFCR |= DMA2_Channel4_IT_Mask; } else { if (DMAy_Channelx == DMA2_Channel5) { /* Reset interrupt pending bits for DMA2 Channel5 */ DMA2->IFCR |= DMA2_Channel5_IT_Mask; } } } /** * @brief Initializes the DMAy Channelx according to the specified * parameters in the DMA_InitStruct. * @param DMAy_Channelx: where y can be 1 or 2 to select the DMA and * x can be 1 to 7 for DMA1 and 1 to 5 for DMA2 to select the DMA Channel. * @param DMA_InitStruct: pointer to a DMA_InitTypeDef structure that * contains the configuration information for the specified DMA Channel. * @retval None */ void DMA_Init(DMA_Channel_TypeDef* DMAy_Channelx, DMA_InitTypeDef* DMA_InitStruct) { uint32_t tmpreg = 0; /* Check the parameters */ assert_param(IS_DMA_ALL_PERIPH(DMAy_Channelx)); assert_param(IS_DMA_DIR(DMA_InitStruct->DMA_DIR)); assert_param(IS_DMA_BUFFER_SIZE(DMA_InitStruct->DMA_BufferSize)); assert_param(IS_DMA_PERIPHERAL_INC_STATE(DMA_InitStruct->DMA_PeripheralInc)); assert_param(IS_DMA_MEMORY_INC_STATE(DMA_InitStruct->DMA_MemoryInc)); assert_param(IS_DMA_PERIPHERAL_DATA_SIZE(DMA_InitStruct->DMA_PeripheralDataSize)); assert_param(IS_DMA_MEMORY_DATA_SIZE(DMA_InitStruct->DMA_MemoryDataSize)); assert_param(IS_DMA_MODE(DMA_InitStruct->DMA_Mode)); assert_param(IS_DMA_PRIORITY(DMA_InitStruct->DMA_Priority)); assert_param(IS_DMA_M2M_STATE(DMA_InitStruct->DMA_M2M)); /*--------------------------- DMAy Channelx CCR Configuration -----------------*/ /* Get the DMAy_Channelx CCR value */ tmpreg = DMAy_Channelx->CCR; /* Clear MEM2MEM, PL, MSIZE, PSIZE, MINC, PINC, CIRC and DIR bits */ tmpreg &= CCR_CLEAR_Mask; /* Configure DMAy Channelx: data transfer, data size, priority level and mode */ /* Set DIR bit according to DMA_DIR value */ /* Set CIRC bit according to DMA_Mode value */ /* Set PINC bit according to DMA_PeripheralInc value */ /* Set MINC bit according to DMA_MemoryInc value */ /* Set PSIZE bits according to DMA_PeripheralDataSize value */ /* Set MSIZE bits according to DMA_MemoryDataSize value */ /* Set PL bits according to DMA_Priority value */ /* Set the MEM2MEM bit according to DMA_M2M value */ tmpreg |= DMA_InitStruct->DMA_DIR | DMA_InitStruct->DMA_Mode | DMA_InitStruct->DMA_PeripheralInc | DMA_InitStruct->DMA_MemoryInc | DMA_InitStruct->DMA_PeripheralDataSize | DMA_InitStruct->DMA_MemoryDataSize | DMA_InitStruct->DMA_Priority | DMA_InitStruct->DMA_M2M; /* Write to DMAy Channelx CCR */ DMAy_Channelx->CCR = tmpreg; /*--------------------------- DMAy Channelx CNDTR Configuration ---------------*/ /* Write to DMAy Channelx CNDTR */ DMAy_Channelx->CNDTR = DMA_InitStruct->DMA_BufferSize; /*--------------------------- DMAy Channelx CPAR Configuration ----------------*/ /* Write to DMAy Channelx CPAR */ DMAy_Channelx->CPAR = DMA_InitStruct->DMA_PeripheralBaseAddr; /*--------------------------- DMAy Channelx CMAR Configuration ----------------*/ /* Write to DMAy Channelx CMAR */ DMAy_Channelx->CMAR = DMA_InitStruct->DMA_MemoryBaseAddr; } /** * @brief Fills each DMA_InitStruct member with its default value. * @param DMA_InitStruct : pointer to a DMA_InitTypeDef structure which will * be initialized. * @retval None */ void DMA_StructInit(DMA_InitTypeDef* DMA_InitStruct) { /*-------------- Reset DMA init structure parameters values ------------------*/ /* Initialize the DMA_PeripheralBaseAddr member */ DMA_InitStruct->DMA_PeripheralBaseAddr = 0; /* Initialize the DMA_MemoryBaseAddr member */ DMA_InitStruct->DMA_MemoryBaseAddr = 0; /* Initialize the DMA_DIR member */ DMA_InitStruct->DMA_DIR = DMA_DIR_PeripheralSRC; /* Initialize the DMA_BufferSize member */ DMA_InitStruct->DMA_BufferSize = 0; /* Initialize the DMA_PeripheralInc member */ DMA_InitStruct->DMA_PeripheralInc = DMA_PeripheralInc_Disable; /* Initialize the DMA_MemoryInc member */ DMA_InitStruct->DMA_MemoryInc = DMA_MemoryInc_Disable; /* Initialize the DMA_PeripheralDataSize member */ DMA_InitStruct->DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte; /* Initialize the DMA_MemoryDataSize member */ DMA_InitStruct->DMA_MemoryDataSize = DMA_MemoryDataSize_Byte; /* Initialize the DMA_Mode member */ DMA_InitStruct->DMA_Mode = DMA_Mode_Normal; /* Initialize the DMA_Priority member */ DMA_InitStruct->DMA_Priority = DMA_Priority_Low; /* Initialize the DMA_M2M member */ DMA_InitStruct->DMA_M2M = DMA_M2M_Disable; } /** * @brief Enables or disables the specified DMAy Channelx. * @param DMAy_Channelx: where y can be 1 or 2 to select the DMA and * x can be 1 to 7 for DMA1 and 1 to 5 for DMA2 to select the DMA Channel. * @param NewState: new state of the DMAy Channelx. * This parameter can be: ENABLE or DISABLE. * @retval None */ void DMA_Cmd(DMA_Channel_TypeDef* DMAy_Channelx, FunctionalState NewState) { /* Check the parameters */ assert_param(IS_DMA_ALL_PERIPH(DMAy_Channelx)); assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the selected DMAy Channelx */ DMAy_Channelx->CCR |= DMA_CCR1_EN; } else { /* Disable the selected DMAy Channelx */ DMAy_Channelx->CCR &= (uint16_t)(~DMA_CCR1_EN); } } /** * @brief Enables or disables the specified DMAy Channelx interrupts. * @param DMAy_Channelx: where y can be 1 or 2 to select the DMA and * x can be 1 to 7 for DMA1 and 1 to 5 for DMA2 to select the DMA Channel. * @param DMA_IT: specifies the DMA interrupts sources to be enabled * or disabled. * This parameter can be any combination of the following values: * @arg DMA_IT_TC: Transfer complete interrupt mask * @arg DMA_IT_HT: Half transfer interrupt mask * @arg DMA_IT_TE: Transfer error interrupt mask * @param NewState: new state of the specified DMA interrupts. * This parameter can be: ENABLE or DISABLE. * @retval None */ void DMA_ITConfig(DMA_Channel_TypeDef* DMAy_Channelx, uint32_t DMA_IT, FunctionalState NewState) { /* Check the parameters */ assert_param(IS_DMA_ALL_PERIPH(DMAy_Channelx)); assert_param(IS_DMA_CONFIG_IT(DMA_IT)); assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the selected DMA interrupts */ DMAy_Channelx->CCR |= DMA_IT; } else { /* Disable the selected DMA interrupts */ DMAy_Channelx->CCR &= ~DMA_IT; } } /** * @brief Sets the number of data units in the current DMAy Channelx transfer. * @param DMAy_Channelx: where y can be 1 or 2 to select the DMA and * x can be 1 to 7 for DMA1 and 1 to 5 for DMA2 to select the DMA Channel. * @param DataNumber: The number of data units in the current DMAy Channelx * transfer. * @note This function can only be used when the DMAy_Channelx is disabled. * @retval None. */ void DMA_SetCurrDataCounter(DMA_Channel_TypeDef* DMAy_Channelx, uint16_t DataNumber) { /* Check the parameters */ assert_param(IS_DMA_ALL_PERIPH(DMAy_Channelx)); /*--------------------------- DMAy Channelx CNDTR Configuration ---------------*/ /* Write to DMAy Channelx CNDTR */ DMAy_Channelx->CNDTR = DataNumber; } /** * @brief Returns the number of remaining data units in the current * DMAy Channelx transfer. * @param DMAy_Channelx: where y can be 1 or 2 to select the DMA and * x can be 1 to 7 for DMA1 and 1 to 5 for DMA2 to select the DMA Channel. * @retval The number of remaining data units in the current DMAy Channelx * transfer. */ uint16_t DMA_GetCurrDataCounter(DMA_Channel_TypeDef* DMAy_Channelx) { /* Check the parameters */ assert_param(IS_DMA_ALL_PERIPH(DMAy_Channelx)); /* Return the number of remaining data units for DMAy Channelx */ return ((uint16_t)(DMAy_Channelx->CNDTR)); } /** * @brief Checks whether the specified DMAy Channelx flag is set or not. * @param DMAy_FLAG: specifies the flag to check. * This parameter can be one of the following values: * @arg DMA1_FLAG_GL1: DMA1 Channel1 global flag. * @arg DMA1_FLAG_TC1: DMA1 Channel1 transfer complete flag. * @arg DMA1_FLAG_HT1: DMA1 Channel1 half transfer flag. * @arg DMA1_FLAG_TE1: DMA1 Channel1 transfer error flag. * @arg DMA1_FLAG_GL2: DMA1 Channel2 global flag. * @arg DMA1_FLAG_TC2: DMA1 Channel2 transfer complete flag. * @arg DMA1_FLAG_HT2: DMA1 Channel2 half transfer flag. * @arg DMA1_FLAG_TE2: DMA1 Channel2 transfer error flag. * @arg DMA1_FLAG_GL3: DMA1 Channel3 global flag. * @arg DMA1_FLAG_TC3: DMA1 Channel3 transfer complete flag. * @arg DMA1_FLAG_HT3: DMA1 Channel3 half transfer flag. * @arg DMA1_FLAG_TE3: DMA1 Channel3 transfer error flag. * @arg DMA1_FLAG_GL4: DMA1 Channel4 global flag. * @arg DMA1_FLAG_TC4: DMA1 Channel4 transfer complete flag. * @arg DMA1_FLAG_HT4: DMA1 Channel4 half transfer flag. * @arg DMA1_FLAG_TE4: DMA1 Channel4 transfer error flag. * @arg DMA1_FLAG_GL5: DMA1 Channel5 global flag. * @arg DMA1_FLAG_TC5: DMA1 Channel5 transfer complete flag. * @arg DMA1_FLAG_HT5: DMA1 Channel5 half transfer flag. * @arg DMA1_FLAG_TE5: DMA1 Channel5 transfer error flag. * @arg DMA1_FLAG_GL6: DMA1 Channel6 global flag. * @arg DMA1_FLAG_TC6: DMA1 Channel6 transfer complete flag. * @arg DMA1_FLAG_HT6: DMA1 Channel6 half transfer flag. * @arg DMA1_FLAG_TE6: DMA1 Channel6 transfer error flag. * @arg DMA1_FLAG_GL7: DMA1 Channel7 global flag. * @arg DMA1_FLAG_TC7: DMA1 Channel7 transfer complete flag. * @arg DMA1_FLAG_HT7: DMA1 Channel7 half transfer flag. * @arg DMA1_FLAG_TE7: DMA1 Channel7 transfer error flag. * @arg DMA2_FLAG_GL1: DMA2 Channel1 global flag. * @arg DMA2_FLAG_TC1: DMA2 Channel1 transfer complete flag. * @arg DMA2_FLAG_HT1: DMA2 Channel1 half transfer flag. * @arg DMA2_FLAG_TE1: DMA2 Channel1 transfer error flag. * @arg DMA2_FLAG_GL2: DMA2 Channel2 global flag. * @arg DMA2_FLAG_TC2: DMA2 Channel2 transfer complete flag. * @arg DMA2_FLAG_HT2: DMA2 Channel2 half transfer flag. * @arg DMA2_FLAG_TE2: DMA2 Channel2 transfer error flag. * @arg DMA2_FLAG_GL3: DMA2 Channel3 global flag. * @arg DMA2_FLAG_TC3: DMA2 Channel3 transfer complete flag. * @arg DMA2_FLAG_HT3: DMA2 Channel3 half transfer flag. * @arg DMA2_FLAG_TE3: DMA2 Channel3 transfer error flag. * @arg DMA2_FLAG_GL4: DMA2 Channel4 global flag. * @arg DMA2_FLAG_TC4: DMA2 Channel4 transfer complete flag. * @arg DMA2_FLAG_HT4: DMA2 Channel4 half transfer flag. * @arg DMA2_FLAG_TE4: DMA2 Channel4 transfer error flag. * @arg DMA2_FLAG_GL5: DMA2 Channel5 global flag. * @arg DMA2_FLAG_TC5: DMA2 Channel5 transfer complete flag. * @arg DMA2_FLAG_HT5: DMA2 Channel5 half transfer flag. * @arg DMA2_FLAG_TE5: DMA2 Channel5 transfer error flag. * @retval The new state of DMAy_FLAG (SET or RESET). */ FlagStatus DMA_GetFlagStatus(uint32_t DMAy_FLAG) { FlagStatus bitstatus = RESET; uint32_t tmpreg = 0; /* Check the parameters */ assert_param(IS_DMA_GET_FLAG(DMAy_FLAG)); /* Calculate the used DMAy */ if ((DMAy_FLAG & FLAG_Mask) != (uint32_t)RESET) { /* Get DMA2 ISR register value */ tmpreg = DMA2->ISR ; } else { /* Get DMA1 ISR register value */ tmpreg = DMA1->ISR ; } /* Check the status of the specified DMAy flag */ if ((tmpreg & DMAy_FLAG) != (uint32_t)RESET) { /* DMAy_FLAG is set */ bitstatus = SET; } else { /* DMAy_FLAG is reset */ bitstatus = RESET; } /* Return the DMAy_FLAG status */ return bitstatus; } /** * @brief Clears the DMAy Channelx's pending flags. * @param DMAy_FLAG: specifies the flag to clear. * This parameter can be any combination (for the same DMA) of the following values: * @arg DMA1_FLAG_GL1: DMA1 Channel1 global flag. * @arg DMA1_FLAG_TC1: DMA1 Channel1 transfer complete flag. * @arg DMA1_FLAG_HT1: DMA1 Channel1 half transfer flag. * @arg DMA1_FLAG_TE1: DMA1 Channel1 transfer error flag. * @arg DMA1_FLAG_GL2: DMA1 Channel2 global flag. * @arg DMA1_FLAG_TC2: DMA1 Channel2 transfer complete flag. * @arg DMA1_FLAG_HT2: DMA1 Channel2 half transfer flag. * @arg DMA1_FLAG_TE2: DMA1 Channel2 transfer error flag. * @arg DMA1_FLAG_GL3: DMA1 Channel3 global flag. * @arg DMA1_FLAG_TC3: DMA1 Channel3 transfer complete flag. * @arg DMA1_FLAG_HT3: DMA1 Channel3 half transfer flag. * @arg DMA1_FLAG_TE3: DMA1 Channel3 transfer error flag. * @arg DMA1_FLAG_GL4: DMA1 Channel4 global flag. * @arg DMA1_FLAG_TC4: DMA1 Channel4 transfer complete flag. * @arg DMA1_FLAG_HT4: DMA1 Channel4 half transfer flag. * @arg DMA1_FLAG_TE4: DMA1 Channel4 transfer error flag. * @arg DMA1_FLAG_GL5: DMA1 Channel5 global flag. * @arg DMA1_FLAG_TC5: DMA1 Channel5 transfer complete flag. * @arg DMA1_FLAG_HT5: DMA1 Channel5 half transfer flag. * @arg DMA1_FLAG_TE5: DMA1 Channel5 transfer error flag. * @arg DMA1_FLAG_GL6: DMA1 Channel6 global flag. * @arg DMA1_FLAG_TC6: DMA1 Channel6 transfer complete flag. * @arg DMA1_FLAG_HT6: DMA1 Channel6 half transfer flag. * @arg DMA1_FLAG_TE6: DMA1 Channel6 transfer error flag. * @arg DMA1_FLAG_GL7: DMA1 Channel7 global flag. * @arg DMA1_FLAG_TC7: DMA1 Channel7 transfer complete flag. * @arg DMA1_FLAG_HT7: DMA1 Channel7 half transfer flag. * @arg DMA1_FLAG_TE7: DMA1 Channel7 transfer error flag. * @arg DMA2_FLAG_GL1: DMA2 Channel1 global flag. * @arg DMA2_FLAG_TC1: DMA2 Channel1 transfer complete flag. * @arg DMA2_FLAG_HT1: DMA2 Channel1 half transfer flag. * @arg DMA2_FLAG_TE1: DMA2 Channel1 transfer error flag. * @arg DMA2_FLAG_GL2: DMA2 Channel2 global flag. * @arg DMA2_FLAG_TC2: DMA2 Channel2 transfer complete flag. * @arg DMA2_FLAG_HT2: DMA2 Channel2 half transfer flag. * @arg DMA2_FLAG_TE2: DMA2 Channel2 transfer error flag. * @arg DMA2_FLAG_GL3: DMA2 Channel3 global flag. * @arg DMA2_FLAG_TC3: DMA2 Channel3 transfer complete flag. * @arg DMA2_FLAG_HT3: DMA2 Channel3 half transfer flag. * @arg DMA2_FLAG_TE3: DMA2 Channel3 transfer error flag. * @arg DMA2_FLAG_GL4: DMA2 Channel4 global flag. * @arg DMA2_FLAG_TC4: DMA2 Channel4 transfer complete flag. * @arg DMA2_FLAG_HT4: DMA2 Channel4 half transfer flag. * @arg DMA2_FLAG_TE4: DMA2 Channel4 transfer error flag. * @arg DMA2_FLAG_GL5: DMA2 Channel5 global flag. * @arg DMA2_FLAG_TC5: DMA2 Channel5 transfer complete flag. * @arg DMA2_FLAG_HT5: DMA2 Channel5 half transfer flag. * @arg DMA2_FLAG_TE5: DMA2 Channel5 transfer error flag. * @retval None */ void DMA_ClearFlag(uint32_t DMAy_FLAG) { /* Check the parameters */ assert_param(IS_DMA_CLEAR_FLAG(DMAy_FLAG)); /* Calculate the used DMAy */ if ((DMAy_FLAG & FLAG_Mask) != (uint32_t)RESET) { /* Clear the selected DMAy flags */ DMA2->IFCR = DMAy_FLAG; } else { /* Clear the selected DMAy flags */ DMA1->IFCR = DMAy_FLAG; } } /** * @brief Checks whether the specified DMAy Channelx interrupt has occurred or not. * @param DMAy_IT: specifies the DMAy interrupt source to check. * This parameter can be one of the following values: * @arg DMA1_IT_GL1: DMA1 Channel1 global interrupt. * @arg DMA1_IT_TC1: DMA1 Channel1 transfer complete interrupt. * @arg DMA1_IT_HT1: DMA1 Channel1 half transfer interrupt. * @arg DMA1_IT_TE1: DMA1 Channel1 transfer error interrupt. * @arg DMA1_IT_GL2: DMA1 Channel2 global interrupt. * @arg DMA1_IT_TC2: DMA1 Channel2 transfer complete interrupt. * @arg DMA1_IT_HT2: DMA1 Channel2 half transfer interrupt. * @arg DMA1_IT_TE2: DMA1 Channel2 transfer error interrupt. * @arg DMA1_IT_GL3: DMA1 Channel3 global interrupt. * @arg DMA1_IT_TC3: DMA1 Channel3 transfer complete interrupt. * @arg DMA1_IT_HT3: DMA1 Channel3 half transfer interrupt. * @arg DMA1_IT_TE3: DMA1 Channel3 transfer error interrupt. * @arg DMA1_IT_GL4: DMA1 Channel4 global interrupt. * @arg DMA1_IT_TC4: DMA1 Channel4 transfer complete interrupt. * @arg DMA1_IT_HT4: DMA1 Channel4 half transfer interrupt. * @arg DMA1_IT_TE4: DMA1 Channel4 transfer error interrupt. * @arg DMA1_IT_GL5: DMA1 Channel5 global interrupt. * @arg DMA1_IT_TC5: DMA1 Channel5 transfer complete interrupt. * @arg DMA1_IT_HT5: DMA1 Channel5 half transfer interrupt. * @arg DMA1_IT_TE5: DMA1 Channel5 transfer error interrupt. * @arg DMA1_IT_GL6: DMA1 Channel6 global interrupt. * @arg DMA1_IT_TC6: DMA1 Channel6 transfer complete interrupt. * @arg DMA1_IT_HT6: DMA1 Channel6 half transfer interrupt. * @arg DMA1_IT_TE6: DMA1 Channel6 transfer error interrupt. * @arg DMA1_IT_GL7: DMA1 Channel7 global interrupt. * @arg DMA1_IT_TC7: DMA1 Channel7 transfer complete interrupt. * @arg DMA1_IT_HT7: DMA1 Channel7 half transfer interrupt. * @arg DMA1_IT_TE7: DMA1 Channel7 transfer error interrupt. * @arg DMA2_IT_GL1: DMA2 Channel1 global interrupt. * @arg DMA2_IT_TC1: DMA2 Channel1 transfer complete interrupt. * @arg DMA2_IT_HT1: DMA2 Channel1 half transfer interrupt. * @arg DMA2_IT_TE1: DMA2 Channel1 transfer error interrupt. * @arg DMA2_IT_GL2: DMA2 Channel2 global interrupt. * @arg DMA2_IT_TC2: DMA2 Channel2 transfer complete interrupt. * @arg DMA2_IT_HT2: DMA2 Channel2 half transfer interrupt. * @arg DMA2_IT_TE2: DMA2 Channel2 transfer error interrupt. * @arg DMA2_IT_GL3: DMA2 Channel3 global interrupt. * @arg DMA2_IT_TC3: DMA2 Channel3 transfer complete interrupt. * @arg DMA2_IT_HT3: DMA2 Channel3 half transfer interrupt. * @arg DMA2_IT_TE3: DMA2 Channel3 transfer error interrupt. * @arg DMA2_IT_GL4: DMA2 Channel4 global interrupt. * @arg DMA2_IT_TC4: DMA2 Channel4 transfer complete interrupt. * @arg DMA2_IT_HT4: DMA2 Channel4 half transfer interrupt. * @arg DMA2_IT_TE4: DMA2 Channel4 transfer error interrupt. * @arg DMA2_IT_GL5: DMA2 Channel5 global interrupt. * @arg DMA2_IT_TC5: DMA2 Channel5 transfer complete interrupt. * @arg DMA2_IT_HT5: DMA2 Channel5 half transfer interrupt. * @arg DMA2_IT_TE5: DMA2 Channel5 transfer error interrupt. * @retval The new state of DMAy_IT (SET or RESET). */ ITStatus DMA_GetITStatus(uint32_t DMAy_IT) { ITStatus bitstatus = RESET; uint32_t tmpreg = 0; /* Check the parameters */ assert_param(IS_DMA_GET_IT(DMAy_IT)); /* Calculate the used DMA */ if ((DMAy_IT & FLAG_Mask) != (uint32_t)RESET) { /* Get DMA2 ISR register value */ tmpreg = DMA2->ISR; } else { /* Get DMA1 ISR register value */ tmpreg = DMA1->ISR; } /* Check the status of the specified DMAy interrupt */ if ((tmpreg & DMAy_IT) != (uint32_t)RESET) { /* DMAy_IT is set */ bitstatus = SET; } else { /* DMAy_IT is reset */ bitstatus = RESET; } /* Return the DMA_IT status */ return bitstatus; } /** * @brief Clears the DMAy Channelx's interrupt pending bits. * @param DMAy_IT: specifies the DMAy interrupt pending bit to clear. * This parameter can be any combination (for the same DMA) of the following values: * @arg DMA1_IT_GL1: DMA1 Channel1 global interrupt. * @arg DMA1_IT_TC1: DMA1 Channel1 transfer complete interrupt. * @arg DMA1_IT_HT1: DMA1 Channel1 half transfer interrupt. * @arg DMA1_IT_TE1: DMA1 Channel1 transfer error interrupt. * @arg DMA1_IT_GL2: DMA1 Channel2 global interrupt. * @arg DMA1_IT_TC2: DMA1 Channel2 transfer complete interrupt. * @arg DMA1_IT_HT2: DMA1 Channel2 half transfer interrupt. * @arg DMA1_IT_TE2: DMA1 Channel2 transfer error interrupt. * @arg DMA1_IT_GL3: DMA1 Channel3 global interrupt. * @arg DMA1_IT_TC3: DMA1 Channel3 transfer complete interrupt. * @arg DMA1_IT_HT3: DMA1 Channel3 half transfer interrupt. * @arg DMA1_IT_TE3: DMA1 Channel3 transfer error interrupt. * @arg DMA1_IT_GL4: DMA1 Channel4 global interrupt. * @arg DMA1_IT_TC4: DMA1 Channel4 transfer complete interrupt. * @arg DMA1_IT_HT4: DMA1 Channel4 half transfer interrupt. * @arg DMA1_IT_TE4: DMA1 Channel4 transfer error interrupt. * @arg DMA1_IT_GL5: DMA1 Channel5 global interrupt. * @arg DMA1_IT_TC5: DMA1 Channel5 transfer complete interrupt. * @arg DMA1_IT_HT5: DMA1 Channel5 half transfer interrupt. * @arg DMA1_IT_TE5: DMA1 Channel5 transfer error interrupt. * @arg DMA1_IT_GL6: DMA1 Channel6 global interrupt. * @arg DMA1_IT_TC6: DMA1 Channel6 transfer complete interrupt. * @arg DMA1_IT_HT6: DMA1 Channel6 half transfer interrupt. * @arg DMA1_IT_TE6: DMA1 Channel6 transfer error interrupt. * @arg DMA1_IT_GL7: DMA1 Channel7 global interrupt. * @arg DMA1_IT_TC7: DMA1 Channel7 transfer complete interrupt. * @arg DMA1_IT_HT7: DMA1 Channel7 half transfer interrupt. * @arg DMA1_IT_TE7: DMA1 Channel7 transfer error interrupt. * @arg DMA2_IT_GL1: DMA2 Channel1 global interrupt. * @arg DMA2_IT_TC1: DMA2 Channel1 transfer complete interrupt. * @arg DMA2_IT_HT1: DMA2 Channel1 half transfer interrupt. * @arg DMA2_IT_TE1: DMA2 Channel1 transfer error interrupt. * @arg DMA2_IT_GL2: DMA2 Channel2 global interrupt. * @arg DMA2_IT_TC2: DMA2 Channel2 transfer complete interrupt. * @arg DMA2_IT_HT2: DMA2 Channel2 half transfer interrupt. * @arg DMA2_IT_TE2: DMA2 Channel2 transfer error interrupt. * @arg DMA2_IT_GL3: DMA2 Channel3 global interrupt. * @arg DMA2_IT_TC3: DMA2 Channel3 transfer complete interrupt. * @arg DMA2_IT_HT3: DMA2 Channel3 half transfer interrupt. * @arg DMA2_IT_TE3: DMA2 Channel3 transfer error interrupt. * @arg DMA2_IT_GL4: DMA2 Channel4 global interrupt. * @arg DMA2_IT_TC4: DMA2 Channel4 transfer complete interrupt. * @arg DMA2_IT_HT4: DMA2 Channel4 half transfer interrupt. * @arg DMA2_IT_TE4: DMA2 Channel4 transfer error interrupt. * @arg DMA2_IT_GL5: DMA2 Channel5 global interrupt. * @arg DMA2_IT_TC5: DMA2 Channel5 transfer complete interrupt. * @arg DMA2_IT_HT5: DMA2 Channel5 half transfer interrupt. * @arg DMA2_IT_TE5: DMA2 Channel5 transfer error interrupt. * @retval None */ void DMA_ClearITPendingBit(uint32_t DMAy_IT) { /* Check the parameters */ assert_param(IS_DMA_CLEAR_IT(DMAy_IT)); /* Calculate the used DMAy */ if ((DMAy_IT & FLAG_Mask) != (uint32_t)RESET) { /* Clear the selected DMAy interrupt pending bits */ DMA2->IFCR = DMAy_IT; } else { /* Clear the selected DMAy interrupt pending bits */ DMA1->IFCR = DMAy_IT; } } /** * @} */ /** * @} */ /** * @} */ /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/