/* ---------------------------------------------------------------------------- */
/* Atmel Microcontroller Software Support */
/* SAM Software Package License */
/* ---------------------------------------------------------------------------- */
/* Copyright (c) 2015, Atmel Corporation */
/* */
/* All rights reserved. */
/* */
/* Redistribution and use in source and binary forms, with or without */
/* modification, are permitted provided that the following condition is 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 */
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/* ---------------------------------------------------------------------------- */
/** \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 "chip.h"
/*----------------------------------------------------------------------------
* Local variables
*----------------------------------------------------------------------------*/
/** Array of DMA Channel definition for SAMv7 chip*/
static const XdmaHardwareInterface xdmaHwIf[] = {
/* xdmac, peripheral, T/R, HW interface 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_TWIHS0, 0, 14},
{0, ID_TWIHS0, 1, 15},
{0, ID_TWIHS1, 0, 16},
{0, ID_TWIHS1, 1, 17},
{0, ID_TWIHS2, 0, 18},
{0, ID_TWIHS2, 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 peripheral. 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;
}
