/* ---------------------------------------------------------------------------- | |
* SAM Software Package License | |
* ---------------------------------------------------------------------------- | |
* Copyright (c) 2013, Atmel Corporation | |
* | |
* All rights reserved. | |
* | |
* Redistribution and use in source and binary forms, with or without | |
* modification, are permitted provided that the following conditions are met: | |
* | |
* - Redistributions of source code must retain the above copyright notice, | |
* this list of conditions and the disclaimer below. | |
* | |
* Atmel's name may not be used to endorse or promote products derived from | |
* this software without specific prior written permission. | |
* | |
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR | |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE | |
* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, | |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, | |
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, | |
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
* ---------------------------------------------------------------------------- | |
*/ | |
/** \addtogroup dmad_module | |
* | |
* \section DmaHw Dma Hardware Interface Usage | |
* <ul> | |
* <li> The DMA controller can handle the transfer between peripherals and memory | |
* and so receives the triggers from the peripherals. The hardware interface number | |
* are getting from DMAIF_Get_ChannelNumber().</li> | |
* <li> DMAIF_IsValidatedPeripherOnDma() helps to check if the given DMAC has associated | |
* peripheral identifier coded by the given peripheral.</li> | |
* | |
* </ul> | |
*/ | |
/*@{*/ | |
/*@}*/ | |
/** \file */ | |
/*---------------------------------------------------------------------------- | |
* Headers | |
*----------------------------------------------------------------------------*/ | |
#include <board.h> | |
/*---------------------------------------------------------------------------- | |
* Local variables | |
*----------------------------------------------------------------------------*/ | |
/** Array of DMA Channel definition for SAMv7 chip*/ | |
static const XdmaHardwareInterface xdmaHwIf[] = { | |
/* dmac, peripheral, T/R, Channel Number*/ | |
{0, ID_HSMCI, 0, 0}, | |
{0, ID_HSMCI, 1, 0}, | |
{0, ID_SPI0, 0, 1}, | |
{0, ID_SPI0, 1, 2}, | |
{0, ID_SPI1, 0, 3}, | |
{0, ID_SPI1, 1, 4}, | |
{0, ID_QSPI, 0, 5}, | |
{0, ID_QSPI, 1, 6}, | |
{0, ID_USART0, 0, 7}, | |
{0, ID_USART0, 1, 8}, | |
{0, ID_USART1, 0, 9}, | |
{0, ID_USART1, 1, 10}, | |
{0, ID_USART2, 0, 11}, | |
{0, ID_USART2, 1, 12}, | |
{0, ID_PWM0, 0, 13}, | |
{0, ID_TWI0, 0, 14}, | |
{0, ID_TWI0, 1, 15}, | |
{0, ID_TWI1, 0, 16}, | |
{0, ID_TWI1, 1, 17}, | |
{0, ID_TWI2, 0, 18}, | |
{0, ID_TWI2, 1, 19}, | |
{0, ID_UART0, 0, 20}, | |
{0, ID_UART0, 1, 21}, | |
{0, ID_UART1, 0, 22}, | |
{0, ID_UART1, 1, 23}, | |
{0, ID_UART2, 0, 24}, | |
{0, ID_UART2, 1, 25}, | |
{0, ID_UART3, 0, 26}, | |
{0, ID_UART3, 1, 27}, | |
{0, ID_UART4, 0, 28}, | |
{0, ID_UART4, 1, 29}, | |
{0, ID_DACC, 0, 30}, | |
{0, ID_DACC, 0, 31}, | |
{0, ID_SSC, 0, 32}, | |
{0, ID_SSC, 1, 33}, | |
{0, ID_PIOA, 1, 34}, | |
{0, ID_AFEC0, 1, 35}, | |
{0, ID_AFEC1, 1, 36}, | |
{0, ID_AES, 0, 37}, | |
{0, ID_AES, 1, 38}, | |
{0, ID_PWM1, 0, 39}, | |
{0, ID_TC0, 1, 40}, | |
{0, ID_TC1, 1, 41}, | |
{0, ID_TC2, 1, 42}, | |
{0, ID_TC3, 1, 43}, | |
}; | |
/*---------------------------------------------------------------------------- | |
* Exported functions | |
*----------------------------------------------------------------------------*/ | |
/** | |
* \brief Get peripheral identifier coded for hardware handshaking interface | |
* | |
* \param bDmac DMA Controller number. | |
* \param bPeriphID Peripheral ID. | |
* \param bTransfer Transfer type 0: Tx, 1 :Rx. | |
* \return 0-15 peripheral identifier coded. | |
* 0xff : no associated peripheral identifier coded. | |
*/ | |
uint8_t XDMAIF_Get_ChannelNumber (uint8_t bPeriphID, | |
uint8_t bTransfer) | |
{ | |
uint8_t i; | |
uint8_t NumOfPeripheral = ((XDMAC_GetType(XDMAC) & 0x00FF0000) >> 16); | |
for (i = 0; i <=NumOfPeripheral; i++) | |
{ | |
if ( (xdmaHwIf[i].bPeriphID == bPeriphID) && (xdmaHwIf[i].bTransfer == bTransfer)) | |
{ | |
return xdmaHwIf[i].bIfID; | |
} | |
} | |
return 0xff; | |
} | |
/** | |
* \brief Check if the given DMAC has associated peripheral identifier coded by | |
* the given peripheral. | |
* | |
* \param bDmac DMA Controller number. | |
* \param bPeriphID Peripheral ID (0xff : memory only). | |
* \return 1: Is a validated peripher. 0: no associated peripheral identifier coded. | |
*/ | |
uint8_t XDMAIF_IsValidatedPeripherOnDma( uint8_t bPeriphID) | |
{ | |
uint8_t i; | |
uint8_t NumOfPeripheral = ((XDMAC_GetType(XDMAC) & 0x00FF0000) >> 16); | |
/* It is always validated when transfer to memory */ | |
if (bPeriphID == 0xFF) { | |
return 1; | |
} | |
for (i = 0; i <=NumOfPeripheral; i++) | |
{ | |
if ((xdmaHwIf[i].bPeriphID == bPeriphID)) | |
{ | |
return 1; | |
} | |
} | |
return 0; | |
} | |