433 lines
18 KiB
C
433 lines
18 KiB
C
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/********************************** (C) COPYRIGHT *******************************
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* File Name : ch32v20x_dma.c
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* Author : WCH
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* Version : V1.0.0
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* Date : 2021/06/06
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* Description : This file provides all the DMA firmware functions.
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*********************************************************************************
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* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
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* Attention: This software (modified or not) and binary are used for
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* microcontroller manufactured by Nanjing Qinheng Microelectronics.
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*******************************************************************************/
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#include "ch32v20x_dma.h"
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#include "ch32v20x_rcc.h"
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/* DMA1 Channelx interrupt pending bit masks */
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#define DMA1_Channel1_IT_Mask ((uint32_t)(DMA_GIF1 | DMA_TCIF1 | DMA_HTIF1 | DMA_TEIF1))
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#define DMA1_Channel2_IT_Mask ((uint32_t)(DMA_GIF2 | DMA_TCIF2 | DMA_HTIF2 | DMA_TEIF2))
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#define DMA1_Channel3_IT_Mask ((uint32_t)(DMA_GIF3 | DMA_TCIF3 | DMA_HTIF3 | DMA_TEIF3))
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#define DMA1_Channel4_IT_Mask ((uint32_t)(DMA_GIF4 | DMA_TCIF4 | DMA_HTIF4 | DMA_TEIF4))
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#define DMA1_Channel5_IT_Mask ((uint32_t)(DMA_GIF5 | DMA_TCIF5 | DMA_HTIF5 | DMA_TEIF5))
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#define DMA1_Channel6_IT_Mask ((uint32_t)(DMA_GIF6 | DMA_TCIF6 | DMA_HTIF6 | DMA_TEIF6))
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#define DMA1_Channel7_IT_Mask ((uint32_t)(DMA_GIF7 | DMA_TCIF7 | DMA_HTIF7 | DMA_TEIF7))
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#define DMA1_Channel8_IT_Mask ((uint32_t)(DMA_GIF8 | DMA_TCIF8 | DMA_HTIF8 | DMA_TEIF8))
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/* DMA2 FLAG mask */
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#define FLAG_Mask ((uint32_t)0x10000000)
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/* DMA registers Masks */
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#define CFGR_CLEAR_Mask ((uint32_t)0xFFFF800F)
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/*********************************************************************
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* @fn DMA_DeInit
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*
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* @brief Deinitializes the DMAy Channelx registers to their default
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* reset values.
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*
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* @param DMAy_Channelx - here y can be 1 or 2 to select the DMA and x can be
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* 1 to 7 for DMA1 and 1 to 11 for DMA2 to select the DMA Channel.
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*
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* @return none
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*/
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void DMA_DeInit(DMA_Channel_TypeDef *DMAy_Channelx)
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{
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DMAy_Channelx->CFGR &= (uint16_t)(~DMA_CFGR1_EN);
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DMAy_Channelx->CFGR = 0;
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DMAy_Channelx->CNTR = 0;
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DMAy_Channelx->PADDR = 0;
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DMAy_Channelx->MADDR = 0;
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if(DMAy_Channelx == DMA1_Channel1)
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{
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DMA1->INTFCR |= DMA1_Channel1_IT_Mask;
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}
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else if(DMAy_Channelx == DMA1_Channel2)
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{
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DMA1->INTFCR |= DMA1_Channel2_IT_Mask;
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}
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else if(DMAy_Channelx == DMA1_Channel3)
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{
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DMA1->INTFCR |= DMA1_Channel3_IT_Mask;
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}
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else if(DMAy_Channelx == DMA1_Channel4)
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{
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DMA1->INTFCR |= DMA1_Channel4_IT_Mask;
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}
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else if(DMAy_Channelx == DMA1_Channel5)
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{
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DMA1->INTFCR |= DMA1_Channel5_IT_Mask;
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}
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else if(DMAy_Channelx == DMA1_Channel6)
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{
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DMA1->INTFCR |= DMA1_Channel6_IT_Mask;
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}
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else if(DMAy_Channelx == DMA1_Channel7)
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{
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DMA1->INTFCR |= DMA1_Channel7_IT_Mask;
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}
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else if(DMAy_Channelx == DMA1_Channel8)
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{
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DMA1->INTFCR |= DMA1_Channel8_IT_Mask;
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}
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}
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/*********************************************************************
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* @fn DMA_Init
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*
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* @brief Initializes the DMAy Channelx according to the specified
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* parameters in the DMA_InitStruct.
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*
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* @param DMAy_Channelx - here y can be 1 or 2 to select the DMA and x can be
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* 1 to 7 for DMA1 and 1 to 11 for DMA2 to select the DMA Channel.
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* DMA_InitStruct - pointer to a DMA_InitTypeDef structure that contains
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* contains the configuration information for the specified DMA Channel.
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*
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* @return none
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*/
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void DMA_Init(DMA_Channel_TypeDef *DMAy_Channelx, DMA_InitTypeDef *DMA_InitStruct)
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{
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uint32_t tmpreg = 0;
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tmpreg = DMAy_Channelx->CFGR;
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tmpreg &= CFGR_CLEAR_Mask;
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tmpreg |= DMA_InitStruct->DMA_DIR | DMA_InitStruct->DMA_Mode |
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DMA_InitStruct->DMA_PeripheralInc | DMA_InitStruct->DMA_MemoryInc |
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DMA_InitStruct->DMA_PeripheralDataSize | DMA_InitStruct->DMA_MemoryDataSize |
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DMA_InitStruct->DMA_Priority | DMA_InitStruct->DMA_M2M;
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DMAy_Channelx->CFGR = tmpreg;
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DMAy_Channelx->CNTR = DMA_InitStruct->DMA_BufferSize;
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DMAy_Channelx->PADDR = DMA_InitStruct->DMA_PeripheralBaseAddr;
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DMAy_Channelx->MADDR = DMA_InitStruct->DMA_MemoryBaseAddr;
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}
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/*********************************************************************
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* @fn DMA_StructInit
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*
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* @brief Fills each DMA_InitStruct member with its default value.
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*
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* @param DMAy_Channelx - here y can be 1 or 2 to select the DMA and x can be
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* 1 to 7 for DMA1 and 1 to 11 for DMA2 to select the DMA Channel.
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* DMA_InitStruct - pointer to a DMA_InitTypeDef structure that contains
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* contains the configuration information for the specified DMA Channel.
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*
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* @return none
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*/
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void DMA_StructInit(DMA_InitTypeDef *DMA_InitStruct)
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{
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DMA_InitStruct->DMA_PeripheralBaseAddr = 0;
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DMA_InitStruct->DMA_MemoryBaseAddr = 0;
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DMA_InitStruct->DMA_DIR = DMA_DIR_PeripheralSRC;
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DMA_InitStruct->DMA_BufferSize = 0;
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DMA_InitStruct->DMA_PeripheralInc = DMA_PeripheralInc_Disable;
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DMA_InitStruct->DMA_MemoryInc = DMA_MemoryInc_Disable;
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DMA_InitStruct->DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
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DMA_InitStruct->DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
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DMA_InitStruct->DMA_Mode = DMA_Mode_Normal;
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DMA_InitStruct->DMA_Priority = DMA_Priority_Low;
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DMA_InitStruct->DMA_M2M = DMA_M2M_Disable;
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}
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/*********************************************************************
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* @fn DMA_Cmd
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*
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* @brief Enables or disables the specified DMAy Channelx.
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*
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* @param DMAy_Channelx - here y can be 1 or 2 to select the DMA and x can be
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* 1 to 7 for DMA1 and 1 to 11 for DMA2 to select the DMA Channel.
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* NewState - new state of the DMAy Channelx(ENABLE or DISABLE).
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*
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* @return none
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*/
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void DMA_Cmd(DMA_Channel_TypeDef *DMAy_Channelx, FunctionalState NewState)
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{
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if(NewState != DISABLE)
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{
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DMAy_Channelx->CFGR |= DMA_CFGR1_EN;
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}
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else
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{
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DMAy_Channelx->CFGR &= (uint16_t)(~DMA_CFGR1_EN);
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}
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}
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/*********************************************************************
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* @fn DMA_ITConfig
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*
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* @brief Enables or disables the specified DMAy Channelx interrupts.
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*
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* @param DMAy_Channelx - here y can be 1 or 2 to select the DMA and x can be
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* 1 to 7 for DMA1 and 1 to 11 for DMA2 to select the DMA Channel.
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* DMA_IT - specifies the DMA interrupts sources to be enabled
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* or disabled.
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* DMA_IT_TC - Transfer complete interrupt mask
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* DMA_IT_HT - Half transfer interrupt mask
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* DMA_IT_TE - Transfer error interrupt mask
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* NewState - new state of the DMAy Channelx(ENABLE or DISABLE).
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*
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* @return none
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*/
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void DMA_ITConfig(DMA_Channel_TypeDef *DMAy_Channelx, uint32_t DMA_IT, FunctionalState NewState)
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{
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if(NewState != DISABLE)
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{
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DMAy_Channelx->CFGR |= DMA_IT;
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}
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else
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{
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DMAy_Channelx->CFGR &= ~DMA_IT;
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}
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}
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/*********************************************************************
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* @fn DMA_SetCurrDataCounter
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*
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* @brief Sets the number of data units in the current DMAy Channelx transfer.
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*
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* @param DMAy_Channelx - here y can be 1 or 2 to select the DMA and x can be
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* 1 to 7 for DMA1 and 1 to 11 for DMA2 to select the DMA Channel.
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* DataNumber - The number of data units in the current DMAy Channelx
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* transfer.
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*
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* @return none
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*/
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void DMA_SetCurrDataCounter(DMA_Channel_TypeDef *DMAy_Channelx, uint16_t DataNumber)
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{
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DMAy_Channelx->CNTR = DataNumber;
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}
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/*********************************************************************
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* @fn DMA_GetCurrDataCounter
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*
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* @brief Returns the number of remaining data units in the current
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* DMAy Channelx transfer.
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*
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* @param DMAy_Channelx - here y can be 1 or 2 to select the DMA and x can be
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* 1 to 7 for DMA1 and 1 to 11 for DMA2 to select the DMA Channel.
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*
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* @return DataNumber - The number of remaining data units in the current
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* DMAy Channelx transfer.
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*/
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uint16_t DMA_GetCurrDataCounter(DMA_Channel_TypeDef *DMAy_Channelx)
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{
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return ((uint16_t)(DMAy_Channelx->CNTR));
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}
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/*********************************************************************
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* @fn DMA_GetFlagStatus
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*
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* @brief Checks whether the specified DMAy Channelx flag is set or not.
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*
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* @param DMAy_FLAG - specifies the flag to check.
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* DMA1_FLAG_GL1 - DMA1 Channel1 global flag.
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* DMA1_FLAG_TC1 - DMA1 Channel1 transfer complete flag.
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* DMA1_FLAG_HT1 - DMA1 Channel1 half transfer flag.
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* DMA1_FLAG_TE1 - DMA1 Channel1 transfer error flag.
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* DMA1_FLAG_GL2 - DMA1 Channel2 global flag.
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* DMA1_FLAG_TC2 - DMA1 Channel2 transfer complete flag.
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* DMA1_FLAG_HT2 - DMA1 Channel2 half transfer flag.
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* DMA1_FLAG_TE2 - DMA1 Channel2 transfer error flag.
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* DMA1_FLAG_GL3 - DMA1 Channel3 global flag.
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* DMA1_FLAG_TC3 - DMA1 Channel3 transfer complete flag.
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* DMA1_FLAG_HT3 - DMA1 Channel3 half transfer flag.
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* DMA1_FLAG_TE3 - DMA1 Channel3 transfer error flag.
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* DMA1_FLAG_GL4 - DMA1 Channel4 global flag.
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* DMA1_FLAG_TC4 - DMA1 Channel4 transfer complete flag.
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* DMA1_FLAG_HT4 - DMA1 Channel4 half transfer flag.
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* DMA1_FLAG_TE4 - DMA1 Channel4 transfer error flag.
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* DMA1_FLAG_GL5 - DMA1 Channel5 global flag.
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* DMA1_FLAG_TC5 - DMA1 Channel5 transfer complete flag.
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* DMA1_FLAG_HT5 - DMA1 Channel5 half transfer flag.
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* DMA1_FLAG_TE5 - DMA1 Channel5 transfer error flag.
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* DMA1_FLAG_GL6 - DMA1 Channel6 global flag.
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* DMA1_FLAG_TC6 - DMA1 Channel6 transfer complete flag.
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* DMA1_FLAG_HT6 - DMA1 Channel6 half transfer flag.
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* DMA1_FLAG_TE6 - DMA1 Channel6 transfer error flag.
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* DMA1_FLAG_GL7 - DMA1 Channel7 global flag.
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* DMA1_FLAG_TC7 - DMA1 Channel7 transfer complete flag.
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* DMA1_FLAG_HT7 - DMA1 Channel7 half transfer flag.
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* DMA1_FLAG_TE7 - DMA1 Channel7 transfer error flag.
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* DMA2_FLAG_GL1 - DMA2 Channel1 global flag.
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* DMA2_FLAG_TC1 - DMA2 Channel1 transfer complete flag.
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* DMA2_FLAG_HT1 - DMA2 Channel1 half transfer flag.
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* DMA2_FLAG_TE1 - DMA2 Channel1 transfer error flag.
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* @return The new state of DMAy_FLAG (SET or RESET).
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*/
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FlagStatus DMA_GetFlagStatus(uint32_t DMAy_FLAG)
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{
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FlagStatus bitstatus = RESET;
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uint32_t tmpreg = 0;
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tmpreg = DMA1->INTFR;
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if((tmpreg & DMAy_FLAG) != (uint32_t)RESET)
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{
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bitstatus = SET;
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}
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else
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{
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bitstatus = RESET;
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}
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return bitstatus;
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}
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/*********************************************************************
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* @fn DMA_ClearFlag
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*
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* @brief Clears the DMAy Channelx's pending flags.
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*
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* @param DMAy_FLAG - specifies the flag to check.
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* DMA1_FLAG_GL1 - DMA1 Channel1 global flag.
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* DMA1_FLAG_TC1 - DMA1 Channel1 transfer complete flag.
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* DMA1_FLAG_HT1 - DMA1 Channel1 half transfer flag.
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* DMA1_FLAG_TE1 - DMA1 Channel1 transfer error flag.
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* DMA1_FLAG_GL2 - DMA1 Channel2 global flag.
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* DMA1_FLAG_TC2 - DMA1 Channel2 transfer complete flag.
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* DMA1_FLAG_HT2 - DMA1 Channel2 half transfer flag.
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* DMA1_FLAG_TE2 - DMA1 Channel2 transfer error flag.
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* DMA1_FLAG_GL3 - DMA1 Channel3 global flag.
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* DMA1_FLAG_TC3 - DMA1 Channel3 transfer complete flag.
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* DMA1_FLAG_HT3 - DMA1 Channel3 half transfer flag.
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* DMA1_FLAG_TE3 - DMA1 Channel3 transfer error flag.
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* DMA1_FLAG_GL4 - DMA1 Channel4 global flag.
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* DMA1_FLAG_TC4 - DMA1 Channel4 transfer complete flag.
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* DMA1_FLAG_HT4 - DMA1 Channel4 half transfer flag.
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* DMA1_FLAG_TE4 - DMA1 Channel4 transfer error flag.
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* DMA1_FLAG_GL5 - DMA1 Channel5 global flag.
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* DMA1_FLAG_TC5 - DMA1 Channel5 transfer complete flag.
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* DMA1_FLAG_HT5 - DMA1 Channel5 half transfer flag.
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* DMA1_FLAG_TE5 - DMA1 Channel5 transfer error flag.
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* DMA1_FLAG_GL6 - DMA1 Channel6 global flag.
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* DMA1_FLAG_TC6 - DMA1 Channel6 transfer complete flag.
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* DMA1_FLAG_HT6 - DMA1 Channel6 half transfer flag.
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* DMA1_FLAG_TE6 - DMA1 Channel6 transfer error flag.
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* DMA1_FLAG_GL7 - DMA1 Channel7 global flag.
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* DMA1_FLAG_TC7 - DMA1 Channel7 transfer complete flag.
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* DMA1_FLAG_HT7 - DMA1 Channel7 half transfer flag.
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* DMA1_FLAG_TE7 - DMA1 Channel7 transfer error flag.
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* DMA2_FLAG_GL1 - DMA2 Channel1 global flag.
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* DMA2_FLAG_TC1 - DMA2 Channel1 transfer complete flag.
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* DMA2_FLAG_HT1 - DMA2 Channel1 half transfer flag.
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* DMA2_FLAG_TE1 - DMA2 Channel1 transfer error flag.
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* @return none
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*/
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void DMA_ClearFlag(uint32_t DMAy_FLAG)
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{
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DMA1->INTFCR = DMAy_FLAG;
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}
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/*********************************************************************
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* @fn DMA_GetITStatus
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*
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* @brief Checks whether the specified DMAy Channelx interrupt has
|
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|
* occurred or not.
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*
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* @param DMAy_IT - specifies the DMAy interrupt source to check.
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* DMA1_IT_GL1 - DMA1 Channel1 global flag.
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* DMA1_IT_TC1 - DMA1 Channel1 transfer complete flag.
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* DMA1_IT_HT1 - DMA1 Channel1 half transfer flag.
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* DMA1_IT_TE1 - DMA1 Channel1 transfer error flag.
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* DMA1_IT_GL2 - DMA1 Channel2 global flag.
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* DMA1_IT_TC2 - DMA1 Channel2 transfer complete flag.
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* DMA1_IT_HT2 - DMA1 Channel2 half transfer flag.
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* DMA1_IT_TE2 - DMA1 Channel2 transfer error flag.
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* DMA1_IT_GL3 - DMA1 Channel3 global flag.
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* DMA1_IT_TC3 - DMA1 Channel3 transfer complete flag.
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* DMA1_IT_HT3 - DMA1 Channel3 half transfer flag.
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* DMA1_IT_TE3 - DMA1 Channel3 transfer error flag.
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* DMA1_IT_GL4 - DMA1 Channel4 global flag.
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* DMA1_IT_TC4 - DMA1 Channel4 transfer complete flag.
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||
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* DMA1_IT_HT4 - DMA1 Channel4 half transfer flag.
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* DMA1_IT_TE4 - DMA1 Channel4 transfer error flag.
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||
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* DMA1_IT_GL5 - DMA1 Channel5 global flag.
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* DMA1_IT_TC5 - DMA1 Channel5 transfer complete flag.
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* DMA1_IT_HT5 - DMA1 Channel5 half transfer flag.
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||
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|
* DMA1_IT_TE5 - DMA1 Channel5 transfer error flag.
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||
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* DMA1_IT_GL6 - DMA1 Channel6 global flag.
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||
|
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* DMA1_IT_TC6 - DMA1 Channel6 transfer complete flag.
|
||
|
|
* DMA1_IT_HT6 - DMA1 Channel6 half transfer flag.
|
||
|
|
* DMA1_IT_TE6 - DMA1 Channel6 transfer error flag.
|
||
|
|
* DMA1_IT_GL7 - DMA1 Channel7 global flag.
|
||
|
|
* DMA1_IT_TC7 - DMA1 Channel7 transfer complete flag.
|
||
|
|
* DMA1_IT_HT7 - DMA1 Channel7 half transfer flag.
|
||
|
|
* DMA1_IT_TE7 - DMA1 Channel7 transfer error flag.
|
||
|
|
* DMA2_IT_GL1 - DMA2 Channel1 global flag.
|
||
|
|
* DMA2_IT_TC1 - DMA2 Channel1 transfer complete flag.
|
||
|
|
* DMA2_IT_HT1 - DMA2 Channel1 half transfer flag.
|
||
|
|
* DMA2_IT_TE1 - DMA2 Channel1 transfer error flag.
|
||
|
|
* @return The new state of DMAy_IT (SET or RESET).
|
||
|
|
*/
|
||
|
|
ITStatus DMA_GetITStatus(uint32_t DMAy_IT)
|
||
|
|
{
|
||
|
|
ITStatus bitstatus = RESET;
|
||
|
|
uint32_t tmpreg = 0;
|
||
|
|
|
||
|
|
tmpreg = DMA1->INTFR;
|
||
|
|
|
||
|
|
if((tmpreg & DMAy_IT) != (uint32_t)RESET)
|
||
|
|
{
|
||
|
|
bitstatus = SET;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
bitstatus = RESET;
|
||
|
|
}
|
||
|
|
return bitstatus;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*********************************************************************
|
||
|
|
* @fn DMA_ClearITPendingBit
|
||
|
|
*
|
||
|
|
* @brief Clears the DMAy Channelx's interrupt pending bits.
|
||
|
|
*
|
||
|
|
* @param DMAy_IT - specifies the DMAy interrupt source to check.
|
||
|
|
* DMA1_IT_GL1 - DMA1 Channel1 global flag.
|
||
|
|
* DMA1_IT_TC1 - DMA1 Channel1 transfer complete flag.
|
||
|
|
* DMA1_IT_HT1 - DMA1 Channel1 half transfer flag.
|
||
|
|
* DMA1_IT_TE1 - DMA1 Channel1 transfer error flag.
|
||
|
|
* DMA1_IT_GL2 - DMA1 Channel2 global flag.
|
||
|
|
* DMA1_IT_TC2 - DMA1 Channel2 transfer complete flag.
|
||
|
|
* DMA1_IT_HT2 - DMA1 Channel2 half transfer flag.
|
||
|
|
* DMA1_IT_TE2 - DMA1 Channel2 transfer error flag.
|
||
|
|
* DMA1_IT_GL3 - DMA1 Channel3 global flag.
|
||
|
|
* DMA1_IT_TC3 - DMA1 Channel3 transfer complete flag.
|
||
|
|
* DMA1_IT_HT3 - DMA1 Channel3 half transfer flag.
|
||
|
|
* DMA1_IT_TE3 - DMA1 Channel3 transfer error flag.
|
||
|
|
* DMA1_IT_GL4 - DMA1 Channel4 global flag.
|
||
|
|
* DMA1_IT_TC4 - DMA1 Channel4 transfer complete flag.
|
||
|
|
* DMA1_IT_HT4 - DMA1 Channel4 half transfer flag.
|
||
|
|
* DMA1_IT_TE4 - DMA1 Channel4 transfer error flag.
|
||
|
|
* DMA1_IT_GL5 - DMA1 Channel5 global flag.
|
||
|
|
* DMA1_IT_TC5 - DMA1 Channel5 transfer complete flag.
|
||
|
|
* DMA1_IT_HT5 - DMA1 Channel5 half transfer flag.
|
||
|
|
* DMA1_IT_TE5 - DMA1 Channel5 transfer error flag.
|
||
|
|
* DMA1_IT_GL6 - DMA1 Channel6 global flag.
|
||
|
|
* DMA1_IT_TC6 - DMA1 Channel6 transfer complete flag.
|
||
|
|
* DMA1_IT_HT6 - DMA1 Channel6 half transfer flag.
|
||
|
|
* DMA1_IT_TE6 - DMA1 Channel6 transfer error flag.
|
||
|
|
* DMA1_IT_GL7 - DMA1 Channel7 global flag.
|
||
|
|
* DMA1_IT_TC7 - DMA1 Channel7 transfer complete flag.
|
||
|
|
* DMA1_IT_HT7 - DMA1 Channel7 half transfer flag.
|
||
|
|
* DMA1_IT_TE7 - DMA1 Channel7 transfer error flag.
|
||
|
|
* DMA2_IT_GL1 - DMA2 Channel1 global flag.
|
||
|
|
* DMA2_IT_TC1 - DMA2 Channel1 transfer complete flag.
|
||
|
|
* DMA2_IT_HT1 - DMA2 Channel1 half transfer flag.
|
||
|
|
* DMA2_IT_TE1 - DMA2 Channel1 transfer error flag.
|
||
|
|
* @return none
|
||
|
|
*/
|
||
|
|
void DMA_ClearITPendingBit(uint32_t DMAy_IT)
|
||
|
|
{
|
||
|
|
DMA1->INTFCR = DMAy_IT;
|
||
|
|
}
|