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/**************************************************************************//**
* @file pdma.c
* @version V1.00
* $Revision: 8 $
* $Date: 15/03/16 3:17p $
* @brief NUC472/NUC442 PDMA driver source file
*
* @note
* Copyright (C) 2013 Nuvoton Technology Corp. All rights reserved.
*****************************************************************************/
#include "NUC472_442.h"
static uint8_t u32ChSelect[PDMA_CH_MAX];
/** @addtogroup NUC472_442_Device_Driver NUC472/NUC442 Device Driver
@{
*/
/** @addtogroup NUC472_442_PDMA_Driver PDMA Driver
@{
*/
/** @addtogroup NUC472_442_PDMA_EXPORTED_FUNCTIONS PDMA Exported Functions
@{
*/
/**
* @brief PDMA Open
*
* @param[in] u32Mask Channel enable bits.
*
* @return None
*
* @details This function enable the PDMA channels.
*/
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;
}
/**
* @brief PDMA Close
*
* @param[in] None
*
* @return None
*
* @details This function disable all PDMA channels.
*/
void PDMA_Close(void)
{
PDMA->CHCTL = 0;
}
/**
* @brief Set PDMA Transfer Count
*
* @param[in] u32Ch The selected channel
* @param[in] u32Width Data width. PDMA_WIDTH_8, PDMA_WIDTH_16, or PDMA_WIDTH_32
* @param[in] u32TransCount Transfer count
*
* @return None
*
* @details This function set the selected channel data width and transfer count.
*/
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));
}
/**
* @brief Set PDMA Transfer Address
*
* @param[in] u32Ch The selected channel
* @param[in] u32SrcAddr Source address
* @param[in] u32SrcCtrl Source control attribute. PDMA_SAR_INC or PDMA_SAR_FIX
* @param[in] u32DstAddr destination address
* @param[in] u32DstCtrl destination control attribute. PDMA_DAR_INC or PDMA_DAR_FIX
*
* @return None
*
* @details This function set the selected channel source/destination address and attribute.
*/
void PDMA_SetTransferAddr(uint32_t u32Ch, uint32_t u32SrcAddr, uint32_t u32SrcCtrl, uint32_t u32DstAddr, uint32_t u32DstCtrl)
{
PDMA->DSCT[u32Ch].ENDSA = u32SrcAddr;
PDMA->DSCT[u32Ch].ENDDA = u32DstAddr;
PDMA->DSCT[u32Ch].CTL &= ~(PDMA_DSCT_CTL_SAINC_Msk | PDMA_DSCT_CTL_DAINC_Msk);
PDMA->DSCT[u32Ch].CTL |= (u32SrcCtrl | u32DstCtrl);
}
/**
* @brief Set PDMA Transfer Mode
*
* @param[in] u32Ch The selected channel
* @param[in] u32Peripheral The selected peripheral. PDMA_SPI0_TX, PDMA_UART0_TX, PDMA_I2S_TX,...PDMA_MEM
* @param[in] u32ScatterEn Scatter-gather mode enable
* @param[in] u32DescAddr Scatter-gather descriptor address
*
* @return None
*
* @details This function set the selected channel transfer mode. Include peripheral setting.
*/
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;
case 8:
PDMA->REQSEL8_11 = (PDMA->REQSEL8_11 & ~PDMA_REQSEL8_11_REQSRC8_Msk) | u32Peripheral;
break;
case 9:
PDMA->REQSEL8_11 = (PDMA->REQSEL8_11 & ~PDMA_REQSEL8_11_REQSRC9_Msk) | (u32Peripheral << PDMA_REQSEL8_11_REQSRC9_Pos);
break;
case 10:
PDMA->REQSEL8_11 = (PDMA->REQSEL8_11 & ~PDMA_REQSEL8_11_REQSRC10_Msk) | (u32Peripheral << PDMA_REQSEL8_11_REQSRC10_Pos);
break;
case 11:
PDMA->REQSEL8_11 = (PDMA->REQSEL8_11 & ~PDMA_REQSEL8_11_REQSRC11_Msk) | (u32Peripheral << PDMA_REQSEL8_11_REQSRC11_Pos);
break;
case 12:
PDMA->REQSEL12_15 = (PDMA->REQSEL12_15 & ~PDMA_REQSEL12_15_REQSRC12_Msk) | u32Peripheral;
break;
case 13:
PDMA->REQSEL12_15 = (PDMA->REQSEL12_15 & ~PDMA_REQSEL12_15_REQSRC13_Msk) | (u32Peripheral << PDMA_REQSEL12_15_REQSRC13_Pos);
break;
case 14:
PDMA->REQSEL12_15 = (PDMA->REQSEL12_15 & ~PDMA_REQSEL12_15_REQSRC14_Msk) | (u32Peripheral << PDMA_REQSEL12_15_REQSRC14_Pos);
break;
case 15:
PDMA->REQSEL12_15 = (PDMA->REQSEL12_15 & ~PDMA_REQSEL12_15_REQSRC15_Msk) | (u32Peripheral << PDMA_REQSEL12_15_REQSRC15_Pos);
break;
default:
;
}
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;
}
/**
* @brief Set PDMA Burst Type
*
* @param[in] u32Ch The selected channel
* @param[in] u32BurstType Burst mode or single mode
* @param[in] u32BurstSize Set the size of burst mode
*
* @return None
*
* @details This function set the selected channel burst type and size.
*/
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);
}
/**
* @brief Trigger PDMA
*
* @param[in] u32Ch The selected channel
*
* @return None
*
* @details This function trigger the selected channel.
*/
void PDMA_Trigger(uint32_t u32Ch)
{
if (u32ChSelect[u32Ch] == PDMA_MEM)
PDMA->SWREQ = (1 << u32Ch);
}
/**
* @brief Enable Interrupt
*
* @param[in] u32Ch The selected channel
* @param[in] u32Mask The Interrupt Type
*
* @return None
*
* @details This function enable the selected channel interrupt.
*/
void PDMA_EnableInt(uint32_t u32Ch, uint32_t u32Mask)
{
PDMA->INTEN |= (1 << u32Ch);
}
/**
* @brief Disable Interrupt
*
* @param[in] u32Ch The selected channel
* @param[in] u32Mask The Interrupt Type
*
* @return None
*
* @details This function disable the selected channel interrupt.
*/
void PDMA_DisableInt(uint32_t u32Ch, uint32_t u32Mask)
{
PDMA->INTEN &= ~(1 << u32Ch);
}
/*@}*/ /* end of group NUC472_442_PDMA_EXPORTED_FUNCTIONS */
/*@}*/ /* end of group NUC472_442_PDMA_Driver */
/*@}*/ /* end of group NUC472_442_Device_Driver */
/*** (C) COPYRIGHT 2013 Nuvoton Technology Corp. ***/
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