pdma.c

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/**************************************************************************/
#include "M4521.h"
 
 
static uint8_t u32ChSelect[PDMA_CH_MAX];
 
void PDMA_Open(uint32_t u32Mask)
{
    int volatile i;
 
    for(i = 0; i < PDMA_CH_MAX; i++)
    {
        PDMA->DSCT[i].CTL = 0;
        u32ChSelect[i] = 0x1f;
    }
 
    PDMA->CHCTL |= u32Mask;
}
 
void PDMA_Close(void)
{
    PDMA->CHCTL = 0;
}
 
void PDMA_SetTransferCnt(uint32_t u32Ch, uint32_t u32Width, uint32_t u32TransCount)
{
    PDMA->DSCT[u32Ch].CTL &= ~(PDMA_DSCT_CTL_TXCNT_Msk | PDMA_DSCT_CTL_TXWIDTH_Msk);
    PDMA->DSCT[u32Ch].CTL |= (u32Width | ((u32TransCount - 1) << PDMA_DSCT_CTL_TXCNT_Pos));
}
 
void PDMA_SetTransferAddr(uint32_t u32Ch, uint32_t u32SrcAddr, uint32_t u32SrcCtrl, uint32_t u32DstAddr, uint32_t u32DstCtrl)
{
    PDMA->DSCT[u32Ch].SA = u32SrcAddr;
    PDMA->DSCT[u32Ch].DA = u32DstAddr;
    PDMA->DSCT[u32Ch].CTL &= ~(PDMA_DSCT_CTL_SAINC_Msk | PDMA_DSCT_CTL_DAINC_Msk);
    PDMA->DSCT[u32Ch].CTL |= (u32SrcCtrl | u32DstCtrl);
}
 
void PDMA_SetTransferMode(uint32_t u32Ch, uint32_t u32Peripheral, uint32_t u32ScatterEn, uint32_t u32DescAddr)
{
    u32ChSelect[u32Ch] = u32Peripheral;
    switch(u32Ch)
    {
    case 0:
        PDMA->REQSEL0_3 = (PDMA->REQSEL0_3 & ~PDMA_REQSEL0_3_REQSRC0_Msk) | u32Peripheral;
        break;
    case 1:
        PDMA->REQSEL0_3 = (PDMA->REQSEL0_3 & ~PDMA_REQSEL0_3_REQSRC1_Msk) | (u32Peripheral << PDMA_REQSEL0_3_REQSRC1_Pos);
        break;
    case 2:
        PDMA->REQSEL0_3 = (PDMA->REQSEL0_3 & ~PDMA_REQSEL0_3_REQSRC2_Msk) | (u32Peripheral << PDMA_REQSEL0_3_REQSRC2_Pos);
        break;
    case 3:
        PDMA->REQSEL0_3 = (PDMA->REQSEL0_3 & ~PDMA_REQSEL0_3_REQSRC3_Msk) | (u32Peripheral << PDMA_REQSEL0_3_REQSRC3_Pos);
        break;
    case 4:
        PDMA->REQSEL4_7 = (PDMA->REQSEL4_7 & ~PDMA_REQSEL4_7_REQSRC4_Msk) | u32Peripheral;
        break;
    case 5:
        PDMA->REQSEL4_7 = (PDMA->REQSEL4_7 & ~PDMA_REQSEL4_7_REQSRC5_Msk) | (u32Peripheral << PDMA_REQSEL4_7_REQSRC5_Pos);
        break;
    case 6:
        PDMA->REQSEL4_7 = (PDMA->REQSEL4_7 & ~PDMA_REQSEL4_7_REQSRC6_Msk) | (u32Peripheral << PDMA_REQSEL4_7_REQSRC6_Pos);
        break;
    case 7:
        PDMA->REQSEL4_7 = (PDMA->REQSEL4_7 & ~PDMA_REQSEL4_7_REQSRC7_Msk) | (u32Peripheral << PDMA_REQSEL4_7_REQSRC7_Pos);
        break;
    default:
        break;
    }
 
    if(u32ScatterEn)
    {
        PDMA->DSCT[u32Ch].CTL = (PDMA->DSCT[u32Ch].CTL & ~PDMA_DSCT_CTL_OPMODE_Msk) | PDMA_OP_SCATTER;
        PDMA->DSCT[u32Ch].NEXT = u32DescAddr - (PDMA->SCATBA);
    }
    else
        PDMA->DSCT[u32Ch].CTL = (PDMA->DSCT[u32Ch].CTL & ~PDMA_DSCT_CTL_OPMODE_Msk) | PDMA_OP_BASIC;
}
 
void PDMA_SetBurstType(uint32_t u32Ch, uint32_t u32BurstType, uint32_t u32BurstSize)
{
    PDMA->DSCT[u32Ch].CTL &= ~(PDMA_DSCT_CTL_TXTYPE_Msk | PDMA_DSCT_CTL_BURSIZE_Msk);
    PDMA->DSCT[u32Ch].CTL |= (u32BurstType | u32BurstSize);
}
 
void PDMA_EnableTimeout(uint32_t u32Mask)
{
    PDMA->TOUTEN |= u32Mask;
}
 
void PDMA_DisableTimeout(uint32_t u32Mask)
{
    PDMA->TOUTEN &= ~u32Mask;
}
 
void PDMA_SetTimeOut(uint32_t u32Ch, uint32_t u32OnOff, uint32_t u32TimeOutCnt)
{
    switch(u32Ch)
    {
    case 0:
        PDMA->TOC0_1 = (PDMA->TOC0_1 & ~PDMA_TOC0_1_TOC0_Msk) | u32TimeOutCnt;
        break;
    case 1:
        PDMA->TOC0_1 = (PDMA->TOC0_1 & ~PDMA_TOC0_1_TOC1_Msk) | (u32TimeOutCnt << PDMA_TOC0_1_TOC1_Pos);
        break;
    case 2:
        PDMA->TOC2_3 = (PDMA->TOC2_3 & ~PDMA_TOC2_3_TOC2_Msk) | u32TimeOutCnt;
        break;
    case 3:
        PDMA->TOC2_3 = (PDMA->TOC2_3 & ~PDMA_TOC2_3_TOC3_Msk) | (u32TimeOutCnt << PDMA_TOC2_3_TOC3_Pos);
        break;
    case 4:
        PDMA->TOC4_5 = (PDMA->TOC4_5 & ~PDMA_TOC4_5_TOC4_Msk) | u32TimeOutCnt;
        break;
    case 5:
        PDMA->TOC4_5 = (PDMA->TOC4_5 & ~PDMA_TOC4_5_TOC5_Msk) | (u32TimeOutCnt << PDMA_TOC4_5_TOC5_Pos);
        break;
    case 6:
        PDMA->TOC6_7 = (PDMA->TOC6_7 & ~PDMA_TOC6_7_TOC6_Msk) | u32TimeOutCnt;
        break;
    case 7:
        PDMA->TOC6_7 = (PDMA->TOC6_7 & ~PDMA_TOC6_7_TOC7_Msk) | (u32TimeOutCnt << PDMA_TOC6_7_TOC7_Pos);
        break;
 
    default:
        break;
    }
 
    if (u32OnOff)
        PDMA->TOUTEN |= (1ul << u32Ch);
    else
        PDMA->TOUTEN &= ~(1ul << u32Ch);
}
 
void PDMA_Trigger(uint32_t u32Ch)
{
    if(u32ChSelect[u32Ch] == PDMA_MEM)
        PDMA->SWREQ = (1 << u32Ch);
}
 
void PDMA_EnableInt(uint32_t u32Ch, uint32_t u32Mask)
{
    switch(u32Mask)
    {
    case PDMA_INT_TRANS_DONE:
        PDMA->INTEN |= (1 << u32Ch);
        break;
    case PDMA_INT_TEMPTY:
        PDMA->DSCT[u32Ch].CTL &= ~PDMA_DSCT_CTL_TBINTDIS_Msk;
        break;
    case PDMA_INT_TIMEOUT:
        PDMA->TOUTIEN |= (1 << u32Ch);
        break;
 
    default:
        break;
    }
}
 
void PDMA_DisableInt(uint32_t u32Ch, uint32_t u32Mask)
{
    switch(u32Mask)
    {
    case PDMA_INT_TRANS_DONE:
        PDMA->INTEN &= ~(1 << u32Ch);
        break;
    case PDMA_INT_TEMPTY:
        PDMA->DSCT[u32Ch].CTL |= PDMA_DSCT_CTL_TBINTDIS_Msk;
        break;
    case PDMA_INT_TIMEOUT:
        PDMA->TOUTIEN &= ~(1 << u32Ch);
        break;
 
    default:
        break;
    }
}
 /* end of group PDMA_EXPORTED_FUNCTIONS */
 /* end of group PDMA_Driver */
 /* end of group Standard_Driver */
 
/*** (C) COPYRIGHT 2022 Nuvoton Technology Corp. ***/