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lpc17xx_gpdma.c
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Now uses qmake to compile an Qt-creator compatible!
 r18 /**
* @file : lpc17xx_gpdma.c
* @brief : Contains all functions support for GPDMA firmware library on LPC17xx
* @version : 1.0
* @date : 20. Apr. 2009
* @author : HieuNguyen
**************************************************************************
* 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
*/
#ifdef __BUILD_WITH_EXAMPLE__
#include "lpc17xx_libcfg.h"
#else
#include "lpc17xx_libcfg_default.h"
#endif /* __BUILD_WITH_EXAMPLE__ */
#ifdef _GPDMA
/* Private Variables ---------------------------------------------------------- */
/** @defgroup 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
};
/** Interrupt Call-back function pointer data for each GPDMA channel */
static fnGPDMACbs_Type *_apfnGPDMACbs[8] = {
NULL, // GPDMA Call-back function pointer for Channel 0
NULL, // GPDMA Call-back function pointer for Channel 1
NULL, // GPDMA Call-back function pointer for Channel 2
NULL, // GPDMA Call-back function pointer for Channel 3
NULL, // GPDMA Call-back function pointer for Channel 4
NULL, // GPDMA Call-back function pointer for Channel 5
NULL, // GPDMA Call-back function pointer for Channel 6
NULL, // GPDMA Call-back function pointer for Channel 7
};
/**
* @}
*/
/* 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.
* @param[in] pfnGPDMACbs Pointer to a GPDMA interrupt call-back function
* @return ERROR if selected channel is enabled before
* or SUCCESS if channel is configured successfully
*********************************************************************/
Status GPDMA_Setup(GPDMA_Channel_CFG_Type *GPDMAChannelConfig, fnGPDMACbs_Type *pfnGPDMACbs)
{
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];
// Setup call back function for this channel
_apfnGPDMACbs[GPDMAChannelConfig->ChannelNum] = pfnGPDMACbs;
// 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;
break;
}
/* 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 Standard GPDMA interrupt handler, this function will check
* all interrupt status of GPDMA channels, then execute the call
* back function id they're already installed
* @param[in] None
* @return None
**********************************************************************/
void GPDMA_IntHandler(void)
{
uint32_t tmp;
// Scan interrupt pending
for (tmp = 0; tmp <= 7; tmp++) {
if (LPC_GPDMA->DMACIntStat & GPDMA_DMACIntStat_Ch(tmp)) {
// Check counter terminal status
if (LPC_GPDMA->DMACIntTCStat & GPDMA_DMACIntTCStat_Ch(tmp)) {
// Clear terminate counter Interrupt pending
LPC_GPDMA->DMACIntTCClear = GPDMA_DMACIntTCClear_Ch(tmp);
// Execute call-back function if it is already installed
if(_apfnGPDMACbs[tmp] != NULL) {
_apfnGPDMACbs[tmp](GPDMA_STAT_INTTC);
}
}
// Check error terminal status
if (LPC_GPDMA->DMACIntErrStat & GPDMA_DMACIntErrStat_Ch(tmp)) {
// Clear error counter Interrupt pending
LPC_GPDMA->DMACIntErrClr = GPDMA_DMACIntErrClr_Ch(tmp);
// Execute call-back function if it is already installed
if(_apfnGPDMACbs[tmp] != NULL) {
_apfnGPDMACbs[tmp](GPDMA_STAT_INTERR);
}
}
}
}
}
/**
* @}
*/
#endif /* _GPDMA */
/**
* @}
*/
/* --------------------------------- End Of File ------------------------------ */