Memory to Memory DMA demo from CMSIS example. This demo execute 1000 times of 32 word memory to memory DMA (copy), and also measures number of dummy loop execution during DMA cylcles. Line 56 of "DMA_M2M.c" can change DMA source. where; 1)static : source is SRAM 2)const : source is Flash ROM

Dependencies:   mbed

Revision:
0:692bf16d1455
diff -r 000000000000 -r 692bf16d1455 CMSIS_Lib/lpc17xx_gpdma.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/CMSIS_Lib/lpc17xx_gpdma.c	Sun Nov 14 03:26:04 2010 +0000
@@ -0,0 +1,446 @@
+/***********************************************************************//**
+ * @file        lpc17xx_gpdma.c
+ * @brief        Contains all functions support for GPDMA firmware library on LPC17xx
+ * @version        2.0
+ * @date        21. May. 2010
+ * @author        NXP MCU SW Application Team
+ **************************************************************************
+ * Software that is described herein is for illustrative purposes only
+ * which provides customers with programming information regarding the
+ * products. This software is supplied "AS IS" without any warranties.
+ * NXP Semiconductors assumes no responsibility or liability for the
+ * use of the software, conveys no license or title under any patent,
+ * copyright, or mask work right to the product. NXP Semiconductors
+ * reserves the right to make changes in the software without
+ * notification. NXP Semiconductors also make no representation or
+ * warranty that such application will be suitable for the specified
+ * use without further testing or modification.
+ **********************************************************************/
+
+/* Peripheral group ----------------------------------------------------------- */
+/** @addtogroup GPDMA
+ * @{
+ */
+
+/* Includes ------------------------------------------------------------------- */
+#include "lpc17xx_gpdma.h"
+#include "lpc17xx_clkpwr.h"
+
+/* If this source file built with example, the LPC17xx FW library configuration
+ * file in each example directory ("lpc17xx_libcfg.h") must be included,
+ * otherwise the default FW library configuration file must be included instead
+ */
+#include "lpc17xx_libcfg.h"
+
+#ifdef _GPDMA
+
+
+/* Private Variables ---------------------------------------------------------- */
+/** @defgroup GPDMA_Private_Variables GPDMA Private Variables
+ * @{
+ */
+
+/**
+ * @brief Lookup Table of Connection Type matched with
+ * Peripheral Data (FIFO) register base address
+ */
+#ifdef __IAR_SYSTEMS_ICC__
+volatile const void *GPDMA_LUTPerAddr[] = {
+        (&LPC_SSP0->DR),                // SSP0 Tx
+        (&LPC_SSP0->DR),                // SSP0 Rx
+        (&LPC_SSP1->DR),                // SSP1 Tx
+        (&LPC_SSP1->DR),                // SSP1 Rx
+        (&LPC_ADC->ADGDR),            // ADC
+        (&LPC_I2S->I2STXFIFO),         // I2S Tx
+        (&LPC_I2S->I2SRXFIFO),         // I2S Rx
+        (&LPC_DAC->DACR),                // DAC
+        (&LPC_UART0->/*RBTHDLR.*/THR),    // UART0 Tx
+        (&LPC_UART0->/*RBTHDLR.*/RBR),    // UART0 Rx
+        (&LPC_UART1->/*RBTHDLR.*/THR),    // UART1 Tx
+        (&LPC_UART1->/*RBTHDLR.*/RBR),    // UART1 Rx
+        (&LPC_UART2->/*RBTHDLR.*/THR),    // UART2 Tx
+        (&LPC_UART2->/*RBTHDLR.*/RBR),    // UART2 Rx
+        (&LPC_UART3->/*RBTHDLR.*/THR),    // UART3 Tx
+        (&LPC_UART3->/*RBTHDLR.*/RBR),    // UART3 Rx
+        (&LPC_TIM0->MR0),                // MAT0.0
+        (&LPC_TIM0->MR1),                // MAT0.1
+        (&LPC_TIM1->MR0),                // MAT1.0
+        (&LPC_TIM1->MR1),                // MAT1.1
+        (&LPC_TIM2->MR0),                // MAT2.0
+        (&LPC_TIM2->MR1),                // MAT2.1
+        (&LPC_TIM3->MR0),                // MAT3.0
+        (&LPC_TIM3->MR1),                // MAT3.1
+};
+#else
+const uint32_t GPDMA_LUTPerAddr[] = {
+        ((uint32_t)&LPC_SSP0->DR),                // SSP0 Tx
+        ((uint32_t)&LPC_SSP0->DR),                // SSP0 Rx
+        ((uint32_t)&LPC_SSP1->DR),                // SSP1 Tx
+        ((uint32_t)&LPC_SSP1->DR),                // SSP1 Rx
+        ((uint32_t)&LPC_ADC->ADGDR),            // ADC
+        ((uint32_t)&LPC_I2S->I2STXFIFO),         // I2S Tx
+        ((uint32_t)&LPC_I2S->I2SRXFIFO),         // I2S Rx
+        ((uint32_t)&LPC_DAC->DACR),                // DAC
+        ((uint32_t)&LPC_UART0->/*RBTHDLR.*/THR),    // UART0 Tx
+        ((uint32_t)&LPC_UART0->/*RBTHDLR.*/RBR),    // UART0 Rx
+        ((uint32_t)&LPC_UART1->/*RBTHDLR.*/THR),    // UART1 Tx
+        ((uint32_t)&LPC_UART1->/*RBTHDLR.*/RBR),    // UART1 Rx
+        ((uint32_t)&LPC_UART2->/*RBTHDLR.*/THR),    // UART2 Tx
+        ((uint32_t)&LPC_UART2->/*RBTHDLR.*/RBR),    // UART2 Rx
+        ((uint32_t)&LPC_UART3->/*RBTHDLR.*/THR),    // UART3 Tx
+        ((uint32_t)&LPC_UART3->/*RBTHDLR.*/RBR),    // UART3 Rx
+        ((uint32_t)&LPC_TIM0->MR0),                // MAT0.0
+        ((uint32_t)&LPC_TIM0->MR1),                // MAT0.1
+        ((uint32_t)&LPC_TIM1->MR0),                // MAT1.0
+        ((uint32_t)&LPC_TIM1->MR1),                // MAT1.1
+        ((uint32_t)&LPC_TIM2->MR0),                // MAT2.0
+        ((uint32_t)&LPC_TIM2->MR1),                // MAT2.1
+        ((uint32_t)&LPC_TIM3->MR0),                // MAT3.0
+        ((uint32_t)&LPC_TIM3->MR1),                // MAT3.1
+};
+#endif
+/**
+ * @brief Lookup Table of GPDMA Channel Number matched with
+ * GPDMA channel pointer
+ */
+const LPC_GPDMACH_TypeDef *pGPDMACh[8] = {
+        LPC_GPDMACH0,    // GPDMA Channel 0
+        LPC_GPDMACH1,    // GPDMA Channel 1
+        LPC_GPDMACH2,    // GPDMA Channel 2
+        LPC_GPDMACH3,    // GPDMA Channel 3
+        LPC_GPDMACH4,    // GPDMA Channel 4
+        LPC_GPDMACH5,    // GPDMA Channel 5
+        LPC_GPDMACH6,    // GPDMA Channel 6
+        LPC_GPDMACH7,    // GPDMA Channel 7
+};
+/**
+ * @brief Optimized Peripheral Source and Destination burst size
+ */
+const uint8_t GPDMA_LUTPerBurst[] = {
+        GPDMA_BSIZE_4,                // SSP0 Tx
+        GPDMA_BSIZE_4,                // SSP0 Rx
+        GPDMA_BSIZE_4,                // SSP1 Tx
+        GPDMA_BSIZE_4,                // SSP1 Rx
+        GPDMA_BSIZE_4,                // ADC
+        GPDMA_BSIZE_32,             // I2S channel 0
+        GPDMA_BSIZE_32,             // I2S channel 1
+        GPDMA_BSIZE_1,                // DAC
+        GPDMA_BSIZE_1,                // UART0 Tx
+        GPDMA_BSIZE_1,                // UART0 Rx
+        GPDMA_BSIZE_1,                // UART1 Tx
+        GPDMA_BSIZE_1,                // UART1 Rx
+        GPDMA_BSIZE_1,                // UART2 Tx
+        GPDMA_BSIZE_1,                // UART2 Rx
+        GPDMA_BSIZE_1,                // UART3 Tx
+        GPDMA_BSIZE_1,                // UART3 Rx
+        GPDMA_BSIZE_1,                // MAT0.0
+        GPDMA_BSIZE_1,                // MAT0.1
+        GPDMA_BSIZE_1,                // MAT1.0
+        GPDMA_BSIZE_1,                // MAT1.1
+        GPDMA_BSIZE_1,                // MAT2.0
+        GPDMA_BSIZE_1,                // MAT2.1
+        GPDMA_BSIZE_1,                // MAT3.0
+        GPDMA_BSIZE_1,                // MAT3.1
+};
+/**
+ * @brief Optimized Peripheral Source and Destination transfer width
+ */
+const uint8_t GPDMA_LUTPerWid[] = {
+        GPDMA_WIDTH_BYTE,                // SSP0 Tx
+        GPDMA_WIDTH_BYTE,                // SSP0 Rx
+        GPDMA_WIDTH_BYTE,                // SSP1 Tx
+        GPDMA_WIDTH_BYTE,                // SSP1 Rx
+        GPDMA_WIDTH_WORD,                // ADC
+        GPDMA_WIDTH_WORD,                 // I2S channel 0
+        GPDMA_WIDTH_WORD,                 // I2S channel 1
+        GPDMA_WIDTH_BYTE,                // DAC
+        GPDMA_WIDTH_BYTE,                // UART0 Tx
+        GPDMA_WIDTH_BYTE,                // UART0 Rx
+        GPDMA_WIDTH_BYTE,                // UART1 Tx
+        GPDMA_WIDTH_BYTE,                // UART1 Rx
+        GPDMA_WIDTH_BYTE,                // UART2 Tx
+        GPDMA_WIDTH_BYTE,                // UART2 Rx
+        GPDMA_WIDTH_BYTE,                // UART3 Tx
+        GPDMA_WIDTH_BYTE,                // UART3 Rx
+        GPDMA_WIDTH_WORD,                // MAT0.0
+        GPDMA_WIDTH_WORD,                // MAT0.1
+        GPDMA_WIDTH_WORD,                // MAT1.0
+        GPDMA_WIDTH_WORD,                // MAT1.1
+        GPDMA_WIDTH_WORD,                // MAT2.0
+        GPDMA_WIDTH_WORD,                // MAT2.1
+        GPDMA_WIDTH_WORD,                // MAT3.0
+        GPDMA_WIDTH_WORD,                // MAT3.1
+};
+
+/**
+ * @}
+ */
+
+/* Public Functions ----------------------------------------------------------- */
+/** @addtogroup GPDMA_Public_Functions
+ * @{
+ */
+
+/********************************************************************//**
+ * @brief         Initialize GPDMA controller
+ * @param         None
+ * @return         None
+ *********************************************************************/
+void GPDMA_Init(void)
+{
+    /* Enable GPDMA clock */
+    CLKPWR_ConfigPPWR (CLKPWR_PCONP_PCGPDMA, ENABLE);
+
+    // Reset all channel configuration register
+    LPC_GPDMACH0->DMACCConfig = 0;
+    LPC_GPDMACH1->DMACCConfig = 0;
+    LPC_GPDMACH2->DMACCConfig = 0;
+    LPC_GPDMACH3->DMACCConfig = 0;
+    LPC_GPDMACH4->DMACCConfig = 0;
+    LPC_GPDMACH5->DMACCConfig = 0;
+    LPC_GPDMACH6->DMACCConfig = 0;
+    LPC_GPDMACH7->DMACCConfig = 0;
+
+    /* Clear all DMA interrupt and error flag */
+    LPC_GPDMA->DMACIntTCClear = 0xFF;
+    LPC_GPDMA->DMACIntErrClr = 0xFF;
+}
+
+/********************************************************************//**
+ * @brief         Setup GPDMA channel peripheral according to the specified
+ *               parameters in the GPDMAChannelConfig.
+ * @param[in]    GPDMAChannelConfig Pointer to a GPDMA_CH_CFG_Type
+ *                                     structure that contains the configuration
+ *                                     information for the specified GPDMA channel peripheral.
+ * @return        ERROR if selected channel is enabled before
+ *                 or SUCCESS if channel is configured successfully
+ *********************************************************************/
+Status GPDMA_Setup(GPDMA_Channel_CFG_Type *GPDMAChannelConfig)
+{
+    LPC_GPDMACH_TypeDef *pDMAch;
+    uint32_t tmp1, tmp2;
+
+    if (LPC_GPDMA->DMACEnbldChns & (GPDMA_DMACEnbldChns_Ch(GPDMAChannelConfig->ChannelNum))) {
+        // This channel is enabled, return ERROR, need to release this channel first
+        return ERROR;
+    }
+
+    // Get Channel pointer
+    pDMAch = (LPC_GPDMACH_TypeDef *) pGPDMACh[GPDMAChannelConfig->ChannelNum];
+
+    // Reset the Interrupt status
+    LPC_GPDMA->DMACIntTCClear = GPDMA_DMACIntTCClear_Ch(GPDMAChannelConfig->ChannelNum);
+    LPC_GPDMA->DMACIntErrClr = GPDMA_DMACIntErrClr_Ch(GPDMAChannelConfig->ChannelNum);
+
+    // Clear DMA configure
+    pDMAch->DMACCControl = 0x00;
+    pDMAch->DMACCConfig = 0x00;
+
+    /* Assign Linker List Item value */
+    pDMAch->DMACCLLI = GPDMAChannelConfig->DMALLI;
+
+    /* Set value to Channel Control Registers */
+    switch (GPDMAChannelConfig->TransferType)
+    {
+    // Memory to memory
+    case GPDMA_TRANSFERTYPE_M2M:
+        // Assign physical source and destination address
+        pDMAch->DMACCSrcAddr = GPDMAChannelConfig->SrcMemAddr;
+        pDMAch->DMACCDestAddr = GPDMAChannelConfig->DstMemAddr;
+        pDMAch->DMACCControl
+                = GPDMA_DMACCxControl_TransferSize(GPDMAChannelConfig->TransferSize) \
+                        | GPDMA_DMACCxControl_SBSize(GPDMA_BSIZE_32) \
+                        | GPDMA_DMACCxControl_DBSize(GPDMA_BSIZE_32) \
+                        | GPDMA_DMACCxControl_SWidth(GPDMAChannelConfig->TransferWidth) \
+                        | GPDMA_DMACCxControl_DWidth(GPDMAChannelConfig->TransferWidth) \
+                        | GPDMA_DMACCxControl_SI \
+                        | GPDMA_DMACCxControl_DI \
+                        | GPDMA_DMACCxControl_I;
+        break;
+    // Memory to peripheral
+    case GPDMA_TRANSFERTYPE_M2P:
+        // Assign physical source
+        pDMAch->DMACCSrcAddr = GPDMAChannelConfig->SrcMemAddr;
+        // Assign peripheral destination address
+        pDMAch->DMACCDestAddr = (uint32_t)GPDMA_LUTPerAddr[GPDMAChannelConfig->DstConn];
+        pDMAch->DMACCControl
+                = GPDMA_DMACCxControl_TransferSize((uint32_t)GPDMAChannelConfig->TransferSize) \
+                        | GPDMA_DMACCxControl_SBSize((uint32_t)GPDMA_LUTPerBurst[GPDMAChannelConfig->DstConn]) \
+                        | GPDMA_DMACCxControl_DBSize((uint32_t)GPDMA_LUTPerBurst[GPDMAChannelConfig->DstConn]) \
+                        | GPDMA_DMACCxControl_SWidth((uint32_t)GPDMA_LUTPerWid[GPDMAChannelConfig->DstConn]) \
+                        | GPDMA_DMACCxControl_DWidth((uint32_t)GPDMA_LUTPerWid[GPDMAChannelConfig->DstConn]) \
+                        | GPDMA_DMACCxControl_SI \
+                        | GPDMA_DMACCxControl_I;
+        break;
+    // Peripheral to memory
+    case GPDMA_TRANSFERTYPE_P2M:
+        // Assign peripheral source address
+        pDMAch->DMACCSrcAddr = (uint32_t)GPDMA_LUTPerAddr[GPDMAChannelConfig->SrcConn];
+        // Assign memory destination address
+        pDMAch->DMACCDestAddr = GPDMAChannelConfig->DstMemAddr;
+        pDMAch->DMACCControl
+                = GPDMA_DMACCxControl_TransferSize((uint32_t)GPDMAChannelConfig->TransferSize) \
+                        | GPDMA_DMACCxControl_SBSize((uint32_t)GPDMA_LUTPerBurst[GPDMAChannelConfig->SrcConn]) \
+                        | GPDMA_DMACCxControl_DBSize((uint32_t)GPDMA_LUTPerBurst[GPDMAChannelConfig->SrcConn]) \
+                        | GPDMA_DMACCxControl_SWidth((uint32_t)GPDMA_LUTPerWid[GPDMAChannelConfig->SrcConn]) \
+                        | GPDMA_DMACCxControl_DWidth((uint32_t)GPDMA_LUTPerWid[GPDMAChannelConfig->SrcConn]) \
+                        | GPDMA_DMACCxControl_DI \
+                        | GPDMA_DMACCxControl_I;
+        break;
+    // Peripheral to peripheral
+    case GPDMA_TRANSFERTYPE_P2P:
+        // Assign peripheral source address
+        pDMAch->DMACCSrcAddr = (uint32_t)GPDMA_LUTPerAddr[GPDMAChannelConfig->SrcConn];
+        // Assign peripheral destination address
+        pDMAch->DMACCDestAddr = (uint32_t)GPDMA_LUTPerAddr[GPDMAChannelConfig->DstConn];
+        pDMAch->DMACCControl
+                = GPDMA_DMACCxControl_TransferSize((uint32_t)GPDMAChannelConfig->TransferSize) \
+                        | GPDMA_DMACCxControl_SBSize((uint32_t)GPDMA_LUTPerBurst[GPDMAChannelConfig->SrcConn]) \
+                        | GPDMA_DMACCxControl_DBSize((uint32_t)GPDMA_LUTPerBurst[GPDMAChannelConfig->DstConn]) \
+                        | GPDMA_DMACCxControl_SWidth((uint32_t)GPDMA_LUTPerWid[GPDMAChannelConfig->SrcConn]) \
+                        | GPDMA_DMACCxControl_DWidth((uint32_t)GPDMA_LUTPerWid[GPDMAChannelConfig->DstConn]) \
+                        | GPDMA_DMACCxControl_I;
+        break;
+    // Do not support any more transfer type, return ERROR
+    default:
+        return ERROR;
+    }
+
+    /* Re-Configure DMA Request Select for source peripheral */
+    if (GPDMAChannelConfig->SrcConn > 15)
+    {
+        DMAREQSEL |= (1<<(GPDMAChannelConfig->SrcConn - 16));
+    } else {
+        DMAREQSEL &= ~(1<<(GPDMAChannelConfig->SrcConn - 8));
+    }
+
+    /* Re-Configure DMA Request Select for Destination peripheral */
+    if (GPDMAChannelConfig->DstConn > 15)
+    {
+        DMAREQSEL |= (1<<(GPDMAChannelConfig->DstConn - 16));
+    } else {
+        DMAREQSEL &= ~(1<<(GPDMAChannelConfig->DstConn - 8));
+    }
+
+    /* Enable DMA channels, little endian */
+    LPC_GPDMA->DMACConfig = GPDMA_DMACConfig_E;
+    while (!(LPC_GPDMA->DMACConfig & GPDMA_DMACConfig_E));
+
+    // Calculate absolute value for Connection number
+    tmp1 = GPDMAChannelConfig->SrcConn;
+    tmp1 = ((tmp1 > 15) ? (tmp1 - 8) : tmp1);
+    tmp2 = GPDMAChannelConfig->DstConn;
+    tmp2 = ((tmp2 > 15) ? (tmp2 - 8) : tmp2);
+
+    // Configure DMA Channel, enable Error Counter and Terminate counter
+    pDMAch->DMACCConfig = GPDMA_DMACCxConfig_IE | GPDMA_DMACCxConfig_ITC /*| GPDMA_DMACCxConfig_E*/ \
+        | GPDMA_DMACCxConfig_TransferType((uint32_t)GPDMAChannelConfig->TransferType) \
+        | GPDMA_DMACCxConfig_SrcPeripheral(tmp1) \
+        | GPDMA_DMACCxConfig_DestPeripheral(tmp2);
+
+    return SUCCESS;
+}
+
+
+/*********************************************************************//**
+ * @brief        Enable/Disable DMA channel
+ * @param[in]    channelNum    GPDMA channel, should be in range from 0 to 7
+ * @param[in]    NewState    New State of this command, should be:
+ *                     - ENABLE.
+ *                     - DISABLE.
+ * @return        None
+ **********************************************************************/
+void GPDMA_ChannelCmd(uint8_t channelNum, FunctionalState NewState)
+{
+    LPC_GPDMACH_TypeDef *pDMAch;
+
+    // Get Channel pointer
+    pDMAch = (LPC_GPDMACH_TypeDef *) pGPDMACh[channelNum];
+
+    if (NewState == ENABLE) {
+        pDMAch->DMACCConfig |= GPDMA_DMACCxConfig_E;
+    } else {
+        pDMAch->DMACCConfig &= ~GPDMA_DMACCxConfig_E;
+    }
+}
+/*********************************************************************//**
+ * @brief        Check if corresponding channel does have an active interrupt
+ *                 request or not
+ * @param[in]    type        type of status, should be:
+ *                     - GPDMA_STAT_INT:         GPDMA Interrupt Status
+ *                     - GPDMA_STAT_INTTC:     GPDMA Interrupt Terminal Count Request Status
+ *                     - GPDMA_STAT_INTERR:    GPDMA Interrupt Error Status
+ *                     - GPDMA_STAT_RAWINTTC:    GPDMA Raw Interrupt Terminal Count Status
+ *                     - GPDMA_STAT_RAWINTERR:    GPDMA Raw Error Interrupt Status
+ *                     - GPDMA_STAT_ENABLED_CH:GPDMA Enabled Channel Status
+ * @param[in]    channel        GPDMA channel, should be in range from 0 to 7
+ * @return        IntStatus    status of DMA channel interrupt after masking
+ *                 Should be:
+ *                     - SET: the corresponding channel has no active interrupt request
+ *                     - RESET: the corresponding channel does have an active interrupt request
+ **********************************************************************/
+IntStatus GPDMA_IntGetStatus(GPDMA_Status_Type type, uint8_t channel)
+{
+    CHECK_PARAM(PARAM_GPDMA_STAT(type));
+    CHECK_PARAM(PARAM_GPDMA_CHANNEL(channel));
+
+    switch (type)
+    {
+    case GPDMA_STAT_INT: //check status of DMA channel interrupts
+        if (LPC_GPDMA->DMACIntStat & (GPDMA_DMACIntStat_Ch(channel)))
+            return SET;
+        return RESET;
+    case GPDMA_STAT_INTTC: // check terminal count interrupt request status for DMA
+        if (LPC_GPDMA->DMACIntTCStat & GPDMA_DMACIntTCStat_Ch(channel))
+            return SET;
+        return RESET;
+    case GPDMA_STAT_INTERR: //check interrupt status for DMA channels
+        if (LPC_GPDMA->DMACIntErrStat & GPDMA_DMACIntTCClear_Ch(channel))
+            return SET;
+        return RESET;
+    case GPDMA_STAT_RAWINTTC: //check status of the terminal count interrupt for DMA channels
+        if (LPC_GPDMA->DMACRawIntErrStat & GPDMA_DMACRawIntTCStat_Ch(channel))
+            return SET;
+        return RESET;
+    case GPDMA_STAT_RAWINTERR: //check status of the error interrupt for DMA channels
+        if (LPC_GPDMA->DMACRawIntTCStat & GPDMA_DMACRawIntErrStat_Ch(channel))
+            return SET;
+        return RESET;
+    default: //check enable status for DMA channels
+        if (LPC_GPDMA->DMACEnbldChns & GPDMA_DMACEnbldChns_Ch(channel))
+            return SET;
+        return RESET;
+    }
+}
+
+/*********************************************************************//**
+ * @brief        Clear one or more interrupt requests on DMA channels
+ * @param[in]    type        type of interrupt request, should be:
+ *                     - GPDMA_STATCLR_INTTC:     GPDMA Interrupt Terminal Count Request Clear
+ *                     - GPDMA_STATCLR_INTERR: GPDMA Interrupt Error Clear
+ * @param[in]    channel        GPDMA channel, should be in range from 0 to 7
+ * @return        None
+ **********************************************************************/
+void GPDMA_ClearIntPending(GPDMA_StateClear_Type type, uint8_t channel)
+{
+    CHECK_PARAM(PARAM_GPDMA_STATCLR(type));
+    CHECK_PARAM(PARAM_GPDMA_CHANNEL(channel));
+
+    if (type == GPDMA_STATCLR_INTTC) // clears the terminal count interrupt request on DMA channel
+        LPC_GPDMA->DMACIntTCClear = GPDMA_DMACIntTCClear_Ch(channel);
+    else // clear the error interrupt request
+        LPC_GPDMA->DMACIntErrClr = GPDMA_DMACIntErrClr_Ch(channel);
+}
+
+/**
+ * @}
+ */
+
+#endif /* _GPDMA */
+
+/**
+ * @}
+ */
+
+/* --------------------------------- End Of File ------------------------------ */
+