//###########################################################################
//
// FILE: DSP2833x_DMA.c
//
// TITLE: DSP2833x Device DMA Initialization & Support Functions.
//
//###########################################################################
// $TI Release: 2833x/2823x Header Files V1.32 $
// $Release Date: June 28, 2010 $
// $Copyright:
// Copyright (C) 2009-2024 Texas Instruments Incorporated - http://www.ti.com/
//
// 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 following disclaimer.
//
// Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the
// distribution.
//
// Neither the name of Texas Instruments Incorporated nor the names of
// its contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS 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.
// $
//###########################################################################
//
// Included Files
//
#include "DSP2833x_Device.h" // Headerfile Include File
#include "DSP2833x_Examples.h" // Examples Include File
//
// DMAInitialize - This function initializes the DMA to a known state.
//
void
DMAInitialize(void)
{
EALLOW;
//
// Perform a hard reset on DMA
//
DmaRegs.DMACTRL.bit.HARDRESET = 1;
asm (" nop"); // one NOP required after HARDRESET
//
// Allow DMA to run free on emulation suspend
//
DmaRegs.DEBUGCTRL.bit.FREE = 1;
EDIS;
}
//
// DMACH1AddrConfig -
//
void
DMACH1AddrConfig(volatile Uint16 *DMA_Dest,volatile Uint16 *DMA_Source)
{
EALLOW;
//
// Set up SOURCE address
//
//
// Point to beginning of source buffer
//
DmaRegs.CH1.SRC_BEG_ADDR_SHADOW = (Uint32)DMA_Source;
DmaRegs.CH1.SRC_ADDR_SHADOW = (Uint32)DMA_Source;
//
// Set up DESTINATION address
//
//
// Point to beginning of destination buffer
//
DmaRegs.CH1.DST_BEG_ADDR_SHADOW = (Uint32)DMA_Dest;
DmaRegs.CH1.DST_ADDR_SHADOW = (Uint32)DMA_Dest;
EDIS;
}
//
// DMACH1BurstConfig -
//
void
DMACH1BurstConfig(Uint16 bsize, int16 srcbstep, int16 desbstep)
{
EALLOW;
//
// Set up BURST registers:
//
//
// Number of words(X-1) x-ferred in a burst
//
DmaRegs.CH1.BURST_SIZE.all = bsize;
//
// Increment source addr between each word x-ferred
//
DmaRegs.CH1.SRC_BURST_STEP = srcbstep;
//
// Increment dest addr between each word x-ferred
//
DmaRegs.CH1.DST_BURST_STEP = desbstep;
EDIS;
}
//
// DMACH1TransferConfig -
//
void
DMACH1TransferConfig(Uint16 tsize, int16 srctstep, int16 deststep)
{
EALLOW;
//
// Set up TRANSFER registers:
//
//
// Number of bursts per transfer, DMA interrupt will occur after
// completed transfer
//
DmaRegs.CH1.TRANSFER_SIZE = tsize;
//
// TRANSFER_STEP is ignored when WRAP occurs
//
DmaRegs.CH1.SRC_TRANSFER_STEP = srctstep;
//
// TRANSFER_STEP is ignored when WRAP occurs
//
DmaRegs.CH1.DST_TRANSFER_STEP = deststep;
EDIS;
}
//
// DMACH1WrapConfig -
//
void
DMACH1WrapConfig(Uint16 srcwsize, int16 srcwstep, Uint16 deswsize, int16
deswstep)
{
EALLOW;
//
// Set up WRAP registers
//
DmaRegs.CH1.SRC_WRAP_SIZE = srcwsize; // Wrap source address after N bursts
DmaRegs.CH1.SRC_WRAP_STEP = srcwstep; // Step for source wrap
//
// Wrap destination address after N bursts
//
DmaRegs.CH1.DST_WRAP_SIZE = deswsize;
DmaRegs.CH1.DST_WRAP_STEP = deswstep; // Step for destination wrap
EDIS;
}
//
// DMACH1ModeConfig -
//
void
DMACH1ModeConfig(Uint16 persel, Uint16 perinte, Uint16 oneshot, Uint16 cont,
Uint16 synce, Uint16 syncsel, Uint16 ovrinte, Uint16 datasize,
Uint16 chintmode, Uint16 chinte)
{
EALLOW;
//
// Set up MODE Register:
//
//
// Passed DMA channel as peripheral interrupt source
//
DmaRegs.CH1.MODE.bit.PERINTSEL = persel;
DmaRegs.CH1.MODE.bit.PERINTE = perinte; // Peripheral interrupt enable
DmaRegs.CH1.MODE.bit.ONESHOT = oneshot; // Oneshot enable
DmaRegs.CH1.MODE.bit.CONTINUOUS = cont; // Continous enable
DmaRegs.CH1.MODE.bit.SYNCE = synce; // Peripheral sync enable/disable
DmaRegs.CH1.MODE.bit.SYNCSEL = syncsel; // Sync effects source or destination
DmaRegs.CH1.MODE.bit.OVRINTE = ovrinte; // Enable/disable the overflow interrupt
DmaRegs.CH1.MODE.bit.DATASIZE = datasize; // 16/32-bit data size transfers
//
// Generate interrupt to CPU at beginning/end of transfer
//
DmaRegs.CH1.MODE.bit.CHINTMODE = chintmode;
//
// Channel Interrupt to CPU enable
//
DmaRegs.CH1.MODE.bit.CHINTE = chinte;
//
// Clear any spurious flags:
//
DmaRegs.CH1.CONTROL.bit.PERINTCLR = 1;// Clear any spurious interrupt flags
DmaRegs.CH1.CONTROL.bit.SYNCCLR = 1; // Clear any spurious sync flags
DmaRegs.CH1.CONTROL.bit.ERRCLR = 1; // Clear any spurious sync error flags
//
// Initialize PIE vector for CPU interrupt:
//
PieCtrlRegs.PIEIER7.bit.INTx1 = 1; // Enable DMA CH1 interrupt in PIE
EDIS;
}
//
// StartDMACH1 - This function starts DMA Channel 1.
//
void
StartDMACH1(void)
{
EALLOW;
DmaRegs.CH1.CONTROL.bit.RUN = 1;
EDIS;
}
//
// DMACH2AddrConfig -
//
void
DMACH2AddrConfig(volatile Uint16 *DMA_Dest,volatile Uint16 *DMA_Source)
{
EALLOW;
//
// Set up SOURCE address:
//
//
// Point to beginning of source buffer
//
DmaRegs.CH2.SRC_BEG_ADDR_SHADOW = (Uint32)DMA_Source;
DmaRegs.CH2.SRC_ADDR_SHADOW = (Uint32)DMA_Source;
//
// Set up DESTINATION address:
//
//
// Point to beginning of destination buffer
//
DmaRegs.CH2.DST_BEG_ADDR_SHADOW = (Uint32)DMA_Dest;
DmaRegs.CH2.DST_ADDR_SHADOW = (Uint32)DMA_Dest;
EDIS;
}
//
// DMACH2BurstConfig -
//
void
DMACH2BurstConfig(Uint16 bsize, int16 srcbstep, int16 desbstep)
{
EALLOW;
//
// Set up BURST registers:
//
//
// Number of words(X-1) x-ferred in a burst
//
DmaRegs.CH2.BURST_SIZE.all = bsize;
//
// Increment source addr between each word x-ferred
//
DmaRegs.CH2.SRC_BURST_STEP = srcbstep;
//
// Increment dest addr between each word x-ferred
//
DmaRegs.CH2.DST_BURST_STEP = desbstep;
EDIS;
}
//
// DMACH2TransferConfig -
//
void
DMACH2TransferConfig(Uint16 tsize, int16 srctstep, int16 deststep)
{
EALLOW;
//
// Set up TRANSFER registers:
//
//
// Number of bursts per transfer, DMA interrupt will occur
// after completed transfer
//
DmaRegs.CH2.TRANSFER_SIZE = tsize;
//
// TRANSFER_STEP is ignored when WRAP occurs
//
DmaRegs.CH2.SRC_TRANSFER_STEP = srctstep;
//
// TRANSFER_STEP is ignored when WRAP occurs
//
DmaRegs.CH2.DST_TRANSFER_STEP = deststep;
EDIS;
}
//
// DMACH2WrapConfig -
//
void
DMACH2WrapConfig(Uint16 srcwsize, int16 srcwstep, Uint16 deswsize,
int16 deswstep)
{
EALLOW;
//
// Set up WRAP registers:
//
//
// Wrap source address after N bursts
//
DmaRegs.CH2.SRC_WRAP_SIZE = srcwsize;
//
// Step for source wrap
//
DmaRegs.CH2.SRC_WRAP_STEP = srcwstep;
//
// Wrap destination address after N bursts
//
DmaRegs.CH2.DST_WRAP_SIZE = deswsize;
//
// Step for destination wrap
//
DmaRegs.CH2.DST_WRAP_STEP = deswstep;
EDIS;
}
//
// DMACH2ModeConfig -
//
void
DMACH2ModeConfig(Uint16 persel, Uint16 perinte, Uint16 oneshot, Uint16 cont,
Uint16 synce, Uint16 syncsel, Uint16 ovrinte, Uint16 datasize,
Uint16 chintmode, Uint16 chinte)
{
EALLOW;
//
// Set up MODE Register
//
//
// Passed DMA channel as peripheral interrupt source
//
DmaRegs.CH2.MODE.bit.PERINTSEL = persel;
//
// Peripheral interrupt enable
//
DmaRegs.CH2.MODE.bit.PERINTE = perinte;
//
// Oneshot enable
//
DmaRegs.CH2.MODE.bit.ONESHOT = oneshot;
//
// Continous enable
//
DmaRegs.CH2.MODE.bit.CONTINUOUS = cont;
//
// Peripheral sync enable/disable
//
DmaRegs.CH2.MODE.bit.SYNCE = synce;
//
// Sync effects source or destination
//
DmaRegs.CH2.MODE.bit.SYNCSEL = syncsel;
//
// Enable/disable the overflow interrupt
//
DmaRegs.CH2.MODE.bit.OVRINTE = ovrinte;
//
// 16-bit/32-bit data size transfers
//
DmaRegs.CH2.MODE.bit.DATASIZE = datasize;
//
// Generate interrupt to CPU at beginning/end of transfer
//
DmaRegs.CH2.MODE.bit.CHINTMODE = chintmode;
//
// Channel Interrupt to CPU enable
//
DmaRegs.CH2.MODE.bit.CHINTE = chinte;
//
// Clear any spurious flags:
//
//
// Clear any spurious interrupt flags
//
DmaRegs.CH2.CONTROL.bit.PERINTCLR = 1;
//
// Clear any spurious sync flags
//
DmaRegs.CH2.CONTROL.bit.SYNCCLR = 1;
//
// Clear any spurious sync error flags
//
DmaRegs.CH2.CONTROL.bit.ERRCLR = 1;
//
// Initialize PIE vector for CPU interrupt
//
PieCtrlRegs.PIEIER7.bit.INTx2 = 1; // Enable DMA CH2 interrupt in PIE
EDIS;
}
//
// StartDMACH2 - This function starts DMA Channel 2.
//
void
StartDMACH2(void)
{
EALLOW;
DmaRegs.CH2.CONTROL.bit.RUN = 1;
EDIS;
}
//
// DMACH3AddrConfig -
//
void
DMACH3AddrConfig(volatile Uint16 *DMA_Dest,volatile Uint16 *DMA_Source)
{
EALLOW;
//
// Set up SOURCE address:
//
//
// Point to beginning of source buffer
//
DmaRegs.CH3.SRC_BEG_ADDR_SHADOW = (Uint32)DMA_Source;
DmaRegs.CH3.SRC_ADDR_SHADOW = (Uint32)DMA_Source;
//
// Set up DESTINATION address:
//
//
// Point to beginning of destination buffer
//
DmaRegs.CH3.DST_BEG_ADDR_SHADOW = (Uint32)DMA_Dest;
DmaRegs.CH3.DST_ADDR_SHADOW = (Uint32)DMA_Dest;
EDIS;
}
//
// DMACH3BurstConfig -
//
void
DMACH3BurstConfig(Uint16 bsize, int16 srcbstep, int16 desbstep)
{
EALLOW;
//
// Set up BURST registers:
//
//
// Number of words(X-1) x-ferred in a burst
//
DmaRegs.CH3.BURST_SIZE.all = bsize;
//
// Increment source addr between each word x-ferred
//
DmaRegs.CH3.SRC_BURST_STEP = srcbstep;
//
// Increment dest addr between each word x-ferred
//
DmaRegs.CH3.DST_BURST_STEP = desbstep;
EDIS;
}
//
// DMACH3TransferConfig -
//
void
DMACH3TransferConfig(Uint16 tsize, int16 srctstep, int16 deststep)
{
EALLOW;
//
// Set up TRANSFER registers:
//
//
// Number of bursts per transfer, DMA interrupt will occur after
// completed transfer
//
DmaRegs.CH3.TRANSFER_SIZE = tsize;
//
// TRANSFER_STEP is ignored when WRAP occurs
//
DmaRegs.CH3.SRC_TRANSFER_STEP = srctstep;
//
// TRANSFER_STEP is ignored when WRAP occurs
//
DmaRegs.CH3.DST_TRANSFER_STEP = deststep;
EDIS;
}
//
// DMACH3WrapConfig -
//
void
DMACH3WrapConfig(Uint16 srcwsize, int16 srcwstep, Uint16 deswsize,
int16 deswstep)
{
EALLOW;
//
// Set up WRAP registers:
//
DmaRegs.CH3.SRC_WRAP_SIZE = srcwsize; // Wrap source address after N bursts
DmaRegs.CH3.SRC_WRAP_STEP = srcwstep; // Step for source wrap
//
// Wrap destination address after N bursts
//
DmaRegs.CH3.DST_WRAP_SIZE = deswsize;
//
// Step for destination wrap
//
DmaRegs.CH3.DST_WRAP_STEP = deswstep;
EDIS;
}
//
// DMACH3ModeConfig -
//
void
DMACH3ModeConfig(Uint16 persel, Uint16 perinte, Uint16 oneshot, Uint16 cont,
Uint16 synce, Uint16 syncsel, Uint16 ovrinte, Uint16 datasize,
Uint16 chintmode, Uint16 chinte)
{
EALLOW;
//
// Set up MODE Register:
//
//
// Passed DMA channel as peripheral interrupt source
//
DmaRegs.CH3.MODE.bit.PERINTSEL = persel;
//
// Peripheral interrupt enable
//
DmaRegs.CH3.MODE.bit.PERINTE = perinte;
DmaRegs.CH3.MODE.bit.ONESHOT = oneshot; // Oneshot enable
DmaRegs.CH3.MODE.bit.CONTINUOUS = cont; // Continous enable
DmaRegs.CH3.MODE.bit.SYNCE = synce; // Peripheral sync enable/disable
//
// Sync effects source or destination
//
DmaRegs.CH3.MODE.bit.SYNCSEL = syncsel;
//
// Enable/disable the overflow interrupt
//
DmaRegs.CH3.MODE.bit.OVRINTE = ovrinte;
//
// 16-bit/32-bit data size transfers
//
DmaRegs.CH3.MODE.bit.DATASIZE = datasize;
//
// Generate interrupt to CPU at beginning/end of transfer
//
DmaRegs.CH3.MODE.bit.CHINTMODE = chintmode;
//
// Channel Interrupt to CPU enable
//
DmaRegs.CH3.MODE.bit.CHINTE = chinte;
//
// Clear any spurious flags:
//
//
// Clear any spurious interrupt flags
//
DmaRegs.CH3.CONTROL.bit.PERINTCLR = 1;
DmaRegs.CH3.CONTROL.bit.SYNCCLR = 1; // Clear any spurious sync flags
//
// Clear any spurious sync error flags
//
DmaRegs.CH3.CONTROL.bit.ERRCLR = 1;
//
// Initialize PIE vector for CPU interrupt:
//
PieCtrlRegs.PIEIER7.bit.INTx3 = 1; // Enable DMA CH3 interrupt in PIE
EDIS;
}
//
// StartDMACH3 - This function starts DMA Channel 3.
//
void
StartDMACH3(void)
{
EALLOW;
DmaRegs.CH3.CONTROL.bit.RUN = 1;
EDIS;
}
//
// DMACH4AddrConfig -
//
void
DMACH4AddrConfig(volatile Uint16 *DMA_Dest,volatile Uint16 *DMA_Source)
{
EALLOW;
//
// Set up SOURCE address:
//
//
// Point to beginning of source buffer
//
DmaRegs.CH4.SRC_BEG_ADDR_SHADOW = (Uint32)DMA_Source;
DmaRegs.CH4.SRC_ADDR_SHADOW = (Uint32)DMA_Source;
//
// Set up DESTINATION address:
//
//
// Point to beginning of destination buffer
//
DmaRegs.CH4.DST_BEG_ADDR_SHADOW = (Uint32)DMA_Dest;
DmaRegs.CH4.DST_ADDR_SHADOW = (Uint32)DMA_Dest;
EDIS;
}
//
// DMACH4BurstConfig -
//
void
DMACH4BurstConfig(Uint16 bsize, int16 srcbstep, int16 desbstep)
{
EALLOW;
//
// Set up BURST registers:
//
//
// Number of words(X-1) x-ferred in a burst
//
DmaRegs.CH4.BURST_SIZE.all = bsize;
//
// Increment source addr between each word x-ferred
//
DmaRegs.CH4.SRC_BURST_STEP = srcbstep;
//
// Increment dest addr between each word x-ferred
//
DmaRegs.CH4.DST_BURST_STEP = desbstep;
EDIS;
}
//
// DMACH4TransferConfig -
//
void
DMACH4TransferConfig(Uint16 tsize, int16 srctstep, int16 deststep)
{
EALLOW;
//
// Set up TRANSFER registers:
//
//
// Number of bursts per transfer, DMA interrupt will occur after completed
// transfer
//
DmaRegs.CH4.TRANSFER_SIZE = tsize;
//
// TRANSFER_STEP is ignored when WRAP occurs
//
DmaRegs.CH4.SRC_TRANSFER_STEP = srctstep;
//
// TRANSFER_STEP is ignored when WRAP occurs
//
DmaRegs.CH4.DST_TRANSFER_STEP = deststep;
EDIS;
}
//
// DMACH4WrapConfig -
//
void
DMACH4WrapConfig(Uint16 srcwsize, int16 srcwstep, Uint16 deswsize,
int16 deswstep)
{
EALLOW;
//
// Set up WRAP registers:
//
DmaRegs.CH4.SRC_WRAP_SIZE = srcwsize;// Wrap source address after N bursts
DmaRegs.CH4.SRC_WRAP_STEP = srcwstep;// Step for source wrap
//
// Wrap destination address after N bursts
//
DmaRegs.CH4.DST_WRAP_SIZE = deswsize;
DmaRegs.CH4.DST_WRAP_STEP = deswstep; // Step for destination wrap
EDIS;
}
//
// DMACH4ModeConfig -
//
void
DMACH4ModeConfig(Uint16 persel, Uint16 perinte, Uint16 oneshot, Uint16 cont,
Uint16 synce, Uint16 syncsel, Uint16 ovrinte, Uint16 datasize,
Uint16 chintmode, Uint16 chinte)
{
EALLOW;
//
// Set up MODE Register:
//
//
// Passed DMA channel as peripheral interrupt source
//
DmaRegs.CH4.MODE.bit.PERINTSEL = persel;
//
// Peripheral interrupt enable
//
DmaRegs.CH4.MODE.bit.PERINTE = perinte;
DmaRegs.CH4.MODE.bit.ONESHOT = oneshot; // Oneshot enable
DmaRegs.CH4.MODE.bit.CONTINUOUS = cont; // Continous enable
DmaRegs.CH4.MODE.bit.SYNCE = synce; // Peripheral sync enable/disable
//
// Sync effects source or destination
//
DmaRegs.CH4.MODE.bit.SYNCSEL = syncsel;
//
// Enable/disable the overflow interrupt
//
DmaRegs.CH4.MODE.bit.OVRINTE = ovrinte;
//
// 16-bit/32-bit data size transfers
//
DmaRegs.CH4.MODE.bit.DATASIZE = datasize;
//
// Generate interrupt to CPU at beginning/end of transfer
//
DmaRegs.CH4.MODE.bit.CHINTMODE = chintmode;
//
// Channel Interrupt to CPU enable
//
DmaRegs.CH4.MODE.bit.CHINTE = chinte;
//
// Clear any spurious flags:
//
//
// Clear any spurious interrupt flags
//
DmaRegs.CH4.CONTROL.bit.PERINTCLR = 1;
DmaRegs.CH4.CONTROL.bit.SYNCCLR = 1; // Clear any spurious sync flags
//
// Clear any spurious sync error flags
//
DmaRegs.CH4.CONTROL.bit.ERRCLR = 1;
//
// Initialize PIE vector for CPU interrupt:
//
PieCtrlRegs.PIEIER7.bit.INTx4 = 1; // Enable DMA CH4 interrupt in PIE
EDIS;
}
//
// StartDMACH4 - This function starts DMA Channel 4.
//
void
StartDMACH4(void)
{
EALLOW;
DmaRegs.CH4.CONTROL.bit.RUN = 1;
EDIS;
}
//
// DMACH5AddrConfig -
//
void
DMACH5AddrConfig(volatile Uint16 *DMA_Dest,volatile Uint16 *DMA_Source)
{
EALLOW;
//
// Set up SOURCE address:
//
//
// Point to beginning of source buffer
//
DmaRegs.CH5.SRC_BEG_ADDR_SHADOW = (Uint32)DMA_Source;
DmaRegs.CH5.SRC_ADDR_SHADOW = (Uint32)DMA_Source;
//
// Set up DESTINATION address:
//
//
// Point to beginning of destination buffer
//
DmaRegs.CH5.DST_BEG_ADDR_SHADOW = (Uint32)DMA_Dest;
DmaRegs.CH5.DST_ADDR_SHADOW = (Uint32)DMA_Dest;
EDIS;
}
//
// DMACH5BurstConfig -
//
void
DMACH5BurstConfig(Uint16 bsize, int16 srcbstep, int16 desbstep)
{
EALLOW;
//
// Set up BURST registers:
//
//
// Number of words(X-1) x-ferred in a burst
//
DmaRegs.CH5.BURST_SIZE.all = bsize;
//
// Increment source addr between each word x-ferred
//
DmaRegs.CH5.SRC_BURST_STEP = srcbstep;
//
// Increment dest addr between each word x-ferred
//
DmaRegs.CH5.DST_BURST_STEP = desbstep;
EDIS;
}
//
// DMACH5TransferConfig -
//
void
DMACH5TransferConfig(Uint16 tsize, int16 srctstep, int16 deststep)
{
EALLOW;
//
// Set up TRANSFER registers:
//
//
// Number of bursts per transfer, DMA interrupt will occur after completed
// transfer
//
DmaRegs.CH5.TRANSFER_SIZE = tsize;
//
// TRANSFER_STEP is ignored when WRAP occurs
//
DmaRegs.CH5.SRC_TRANSFER_STEP = srctstep;
//
// TRANSFER_STEP is ignored when WRAP occurs
//
DmaRegs.CH5.DST_TRANSFER_STEP = deststep;
EDIS;
}
//
// DMACH5WrapConfig -
//
void
DMACH5WrapConfig(Uint16 srcwsize, int16 srcwstep, Uint16 deswsize,
int16 deswstep)
{
EALLOW;
//
// Set up WRAP registers:
//
DmaRegs.CH5.SRC_WRAP_SIZE = srcwsize;// Wrap source address after N bursts
DmaRegs.CH5.SRC_WRAP_STEP = srcwstep;// Step for source wrap
//
// Wrap destination address after N bursts
//
DmaRegs.CH5.DST_WRAP_SIZE = deswsize;
DmaRegs.CH5.DST_WRAP_STEP = deswstep; // Step for destination wrap
EDIS;
}
//
// DMACH5ModeConfig -
//
void
DMACH5ModeConfig(Uint16 persel, Uint16 perinte, Uint16 oneshot, Uint16 cont,
Uint16 synce, Uint16 syncsel, Uint16 ovrinte, Uint16 datasize,
Uint16 chintmode, Uint16 chinte)
{
EALLOW;
//
// Set up MODE Register:
//
//
// Passed DMA channel as peripheral interrupt source
//
DmaRegs.CH5.MODE.bit.PERINTSEL = persel;
//
// Peripheral interrupt enable
//
DmaRegs.CH5.MODE.bit.PERINTE = perinte;
DmaRegs.CH5.MODE.bit.ONESHOT = oneshot; // Oneshot enable
DmaRegs.CH5.MODE.bit.CONTINUOUS = cont; // Continous enable
DmaRegs.CH5.MODE.bit.SYNCE = synce; // Peripheral sync enable/disable
//
// Sync effects source or destination
//
DmaRegs.CH5.MODE.bit.SYNCSEL = syncsel;
//
// Enable/disable the overflow interrupt
//
DmaRegs.CH5.MODE.bit.OVRINTE = ovrinte;
//
// 16-bit/32-bit data size transfers
//
DmaRegs.CH5.MODE.bit.DATASIZE = datasize;
//
// Generate interrupt to CPU at beginning/end of transfer
//
DmaRegs.CH5.MODE.bit.CHINTMODE = chintmode;
//
// Channel Interrupt to CPU enable
//
DmaRegs.CH5.MODE.bit.CHINTE = chinte;
//
// Clear any spurious flags:
//
//
// Clear any spurious interrupt flags
//
DmaRegs.CH5.CONTROL.bit.PERINTCLR = 1;
DmaRegs.CH5.CONTROL.bit.SYNCCLR = 1; // Clear any spurious sync flags
//
// Clear any spurious sync error flags
//
DmaRegs.CH5.CONTROL.bit.ERRCLR = 1;
//
// Initialize PIE vector for CPU interrupt:
//
PieCtrlRegs.PIEIER7.bit.INTx5 = 1; // Enable DMA CH5 interrupt in PIE
EDIS;
}
//
// StartDMACH5 - This function starts DMA Channel 5.
//
void
StartDMACH5(void)
{
EALLOW;
DmaRegs.CH5.CONTROL.bit.RUN = 1;
EDIS;
}
//
// DMACH6AddrConfig -
//
void
DMACH6AddrConfig(volatile Uint16 *DMA_Dest,volatile Uint16 *DMA_Source)
{
EALLOW;
//
// Set up SOURCE address:
//
//
// Point to beginning of source buffer
//
DmaRegs.CH6.SRC_BEG_ADDR_SHADOW = (Uint32)DMA_Source;
DmaRegs.CH6.SRC_ADDR_SHADOW = (Uint32)DMA_Source;
//
// Set up DESTINATION address:
//
//
// Point to beginning of destination buffer
//
DmaRegs.CH6.DST_BEG_ADDR_SHADOW = (Uint32)DMA_Dest;
DmaRegs.CH6.DST_ADDR_SHADOW = (Uint32)DMA_Dest;
EDIS;
}
//
// DMACH6BurstConfig -
//
void
DMACH6BurstConfig(Uint16 bsize, int16 srcbstep, int16 desbstep)
{
EALLOW;
//
// Set up BURST registers:
//
//
// Number of words(X-1) x-ferred in a burst
//
DmaRegs.CH6.BURST_SIZE.all = bsize;
//
// Increment source addr between each word x-ferred
//
DmaRegs.CH6.SRC_BURST_STEP = srcbstep;
//
// Increment dest addr between each word x-ferred
//
DmaRegs.CH6.DST_BURST_STEP = desbstep;
EDIS;
}
//
// DMACH6TransferConfig -
//
void
DMACH6TransferConfig(Uint16 tsize, int16 srctstep, int16 deststep)
{
EALLOW;
//
// Set up TRANSFER registers:
//
//
// Number of bursts per transfer, DMA interrupt will occur after completed
// transfer
//
DmaRegs.CH6.TRANSFER_SIZE = tsize;
//
// TRANSFER_STEP is ignored when WRAP occurs
//
DmaRegs.CH6.SRC_TRANSFER_STEP = srctstep;
//
// TRANSFER_STEP is ignored when WRAP occurs
//
DmaRegs.CH6.DST_TRANSFER_STEP = deststep;
EDIS;
}
//
// DMACH6WrapConfig -
//
void
DMACH6WrapConfig(Uint16 srcwsize, int16 srcwstep, Uint16 deswsize,
int16 deswstep)
{
EALLOW;
//
// Set up WRAP registers:
//
DmaRegs.CH6.SRC_WRAP_SIZE = srcwsize;// Wrap source address after N bursts
DmaRegs.CH6.SRC_WRAP_STEP = srcwstep;// Step for source wrap
//
// Wrap destination address after N bursts
//
DmaRegs.CH6.DST_WRAP_SIZE = deswsize;
DmaRegs.CH6.DST_WRAP_STEP = deswstep; // Step for destination wrap
EDIS;
}
//
// DMACH6ModeConfig -
//
void
DMACH6ModeConfig(Uint16 persel, Uint16 perinte, Uint16 oneshot, Uint16 cont,
Uint16 synce, Uint16 syncsel, Uint16 ovrinte, Uint16 datasize,
Uint16 chintmode, Uint16 chinte)
{
EALLOW;
//
// Set up MODE Register:
//
//
// Passed DMA channel as peripheral interrupt source
//
DmaRegs.CH6.MODE.bit.PERINTSEL = persel;
//
// Peripheral interrupt enable
//
DmaRegs.CH6.MODE.bit.PERINTE = perinte;
DmaRegs.CH6.MODE.bit.ONESHOT = oneshot; // Oneshot enable
DmaRegs.CH6.MODE.bit.CONTINUOUS = cont; // Continous enable
DmaRegs.CH6.MODE.bit.SYNCE = synce; // Peripheral sync enable/disable
//
// Sync effects source or destination
//
DmaRegs.CH6.MODE.bit.SYNCSEL = syncsel;
//
// Enable/disable the overflow interrupt
//
DmaRegs.CH6.MODE.bit.OVRINTE = ovrinte;
//
// 16-bit/32-bit data size transfers
//
DmaRegs.CH6.MODE.bit.DATASIZE = datasize;
//
// Generate interrupt to CPU at beginning/end of transfer
//
DmaRegs.CH6.MODE.bit.CHINTMODE = chintmode;
//
// Channel Interrupt to CPU enable
//
DmaRegs.CH6.MODE.bit.CHINTE = chinte;
//
// Clear any spurious flags:
//
//
// Clear any spurious interrupt flags
//
DmaRegs.CH6.CONTROL.bit.PERINTCLR = 1;
DmaRegs.CH6.CONTROL.bit.SYNCCLR = 1; // Clear any spurious sync flags
//
// Clear any spurious sync error flags
//
DmaRegs.CH6.CONTROL.bit.ERRCLR = 1;
//
// Initialize PIE vector for CPU interrupt:
//
PieCtrlRegs.PIEIER7.bit.INTx6 = 1; // Enable DMA CH6 interrupt in PIE
EDIS;
}
//
// StartDMACH6 - This function starts DMA Channel 6.
//
void
StartDMACH6(void)
{
EALLOW;
DmaRegs.CH6.CONTROL.bit.RUN = 1;
EDIS;
}
//
// End of File
//