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Diffstat (limited to 'msp340/Blink/driverlib/MSP430FR5xx_6xx/dma.h')
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diff --git a/msp340/Blink/driverlib/MSP430FR5xx_6xx/dma.h b/msp340/Blink/driverlib/MSP430FR5xx_6xx/dma.h new file mode 100755 index 0000000..77dceea --- /dev/null +++ b/msp340/Blink/driverlib/MSP430FR5xx_6xx/dma.h @@ -0,0 +1,738 @@ +/* --COPYRIGHT--,BSD + * Copyright (c) 2014, Texas Instruments Incorporated + * 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 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. + * --/COPYRIGHT--*/ +//***************************************************************************** +// +// dma.h - Driver for the DMA Module. +// +//***************************************************************************** + +#ifndef __MSP430WARE_DMA_H__ +#define __MSP430WARE_DMA_H__ + +#include "inc/hw_memmap.h" + +#if defined(__MSP430_HAS_DMAX_3__) || defined(__MSP430_HAS_DMAX_6__) + +//***************************************************************************** +// +// If building with a C++ compiler, make all of the definitions in this header +// have a C binding. +// +//***************************************************************************** +#ifdef __cplusplus +extern "C" +{ +#endif + +#include "inc/hw_regaccess.h" +//***************************************************************************** +// +//! \brief Used in the DMA_init() function as the param parameter. +// +//***************************************************************************** +typedef struct DMA_initParam +{ + //! Is the specified channel to initialize. + //! \n Valid values are: + //! - \b DMA_CHANNEL_0 + //! - \b DMA_CHANNEL_1 + //! - \b DMA_CHANNEL_2 + //! - \b DMA_CHANNEL_3 + //! - \b DMA_CHANNEL_4 + //! - \b DMA_CHANNEL_5 + //! - \b DMA_CHANNEL_6 + //! - \b DMA_CHANNEL_7 + uint8_t channelSelect; + //! Is the transfer mode of the selected channel. + //! \n Valid values are: + //! - \b DMA_TRANSFER_SINGLE [Default] + //! - \b DMA_TRANSFER_BLOCK + //! - \b DMA_TRANSFER_BURSTBLOCK + //! - \b DMA_TRANSFER_REPEATED_SINGLE + //! - \b DMA_TRANSFER_REPEATED_BLOCK + //! - \b DMA_TRANSFER_REPEATED_BURSTBLOCK + uint16_t transferModeSelect; + //! Is the amount of transfers to complete in a block transfer mode, as + //! well as how many transfers to complete before the interrupt flag is + //! set. Valid value is between 1-65535, if 0, no transfers will occur. + uint16_t transferSize; + //! Is the source that will trigger the start of each transfer, note that + //! the sources are device specific. + //! \n Valid values are: + //! - \b DMA_TRIGGERSOURCE_0 [Default] + //! - \b DMA_TRIGGERSOURCE_1 + //! - \b DMA_TRIGGERSOURCE_2 + //! - \b DMA_TRIGGERSOURCE_3 + //! - \b DMA_TRIGGERSOURCE_4 + //! - \b DMA_TRIGGERSOURCE_5 + //! - \b DMA_TRIGGERSOURCE_6 + //! - \b DMA_TRIGGERSOURCE_7 + //! - \b DMA_TRIGGERSOURCE_8 + //! - \b DMA_TRIGGERSOURCE_9 + //! - \b DMA_TRIGGERSOURCE_10 + //! - \b DMA_TRIGGERSOURCE_11 + //! - \b DMA_TRIGGERSOURCE_12 + //! - \b DMA_TRIGGERSOURCE_13 + //! - \b DMA_TRIGGERSOURCE_14 + //! - \b DMA_TRIGGERSOURCE_15 + //! - \b DMA_TRIGGERSOURCE_16 + //! - \b DMA_TRIGGERSOURCE_17 + //! - \b DMA_TRIGGERSOURCE_18 + //! - \b DMA_TRIGGERSOURCE_19 + //! - \b DMA_TRIGGERSOURCE_20 + //! - \b DMA_TRIGGERSOURCE_21 + //! - \b DMA_TRIGGERSOURCE_22 + //! - \b DMA_TRIGGERSOURCE_23 + //! - \b DMA_TRIGGERSOURCE_24 + //! - \b DMA_TRIGGERSOURCE_25 + //! - \b DMA_TRIGGERSOURCE_26 + //! - \b DMA_TRIGGERSOURCE_27 + //! - \b DMA_TRIGGERSOURCE_28 + //! - \b DMA_TRIGGERSOURCE_29 + //! - \b DMA_TRIGGERSOURCE_30 + //! - \b DMA_TRIGGERSOURCE_31 + uint8_t triggerSourceSelect; + //! Is the specified size of transfers. + //! \n Valid values are: + //! - \b DMA_SIZE_SRCWORD_DSTWORD [Default] + //! - \b DMA_SIZE_SRCBYTE_DSTWORD + //! - \b DMA_SIZE_SRCWORD_DSTBYTE + //! - \b DMA_SIZE_SRCBYTE_DSTBYTE + uint8_t transferUnitSelect; + //! Is the type of trigger that the trigger signal needs to be to start a + //! transfer. + //! \n Valid values are: + //! - \b DMA_TRIGGER_RISINGEDGE [Default] + //! - \b DMA_TRIGGER_HIGH + uint8_t triggerTypeSelect; +} DMA_initParam; + +//***************************************************************************** +// +// The following are values that can be passed to the triggerSourceSelect +// parameter for functions: DMA_init(); the param parameter for functions: +// DMA_init(). +// +//***************************************************************************** +#define DMA_TRIGGERSOURCE_0 (0x00) +#define DMA_TRIGGERSOURCE_1 (0x01) +#define DMA_TRIGGERSOURCE_2 (0x02) +#define DMA_TRIGGERSOURCE_3 (0x03) +#define DMA_TRIGGERSOURCE_4 (0x04) +#define DMA_TRIGGERSOURCE_5 (0x05) +#define DMA_TRIGGERSOURCE_6 (0x06) +#define DMA_TRIGGERSOURCE_7 (0x07) +#define DMA_TRIGGERSOURCE_8 (0x08) +#define DMA_TRIGGERSOURCE_9 (0x09) +#define DMA_TRIGGERSOURCE_10 (0x0A) +#define DMA_TRIGGERSOURCE_11 (0x0B) +#define DMA_TRIGGERSOURCE_12 (0x0C) +#define DMA_TRIGGERSOURCE_13 (0x0D) +#define DMA_TRIGGERSOURCE_14 (0x0E) +#define DMA_TRIGGERSOURCE_15 (0x0F) +#define DMA_TRIGGERSOURCE_16 (0x10) +#define DMA_TRIGGERSOURCE_17 (0x11) +#define DMA_TRIGGERSOURCE_18 (0x12) +#define DMA_TRIGGERSOURCE_19 (0x13) +#define DMA_TRIGGERSOURCE_20 (0x14) +#define DMA_TRIGGERSOURCE_21 (0x15) +#define DMA_TRIGGERSOURCE_22 (0x16) +#define DMA_TRIGGERSOURCE_23 (0x17) +#define DMA_TRIGGERSOURCE_24 (0x18) +#define DMA_TRIGGERSOURCE_25 (0x19) +#define DMA_TRIGGERSOURCE_26 (0x1A) +#define DMA_TRIGGERSOURCE_27 (0x1B) +#define DMA_TRIGGERSOURCE_28 (0x1C) +#define DMA_TRIGGERSOURCE_29 (0x1D) +#define DMA_TRIGGERSOURCE_30 (0x1E) +#define DMA_TRIGGERSOURCE_31 (0x1F) + +//***************************************************************************** +// +// The following are values that can be passed to the param parameter for +// functions: DMA_init(); the transferModeSelect parameter for functions: +// DMA_init(). +// +//***************************************************************************** +#define DMA_TRANSFER_SINGLE (DMADT_0) +#define DMA_TRANSFER_BLOCK (DMADT_1) +#define DMA_TRANSFER_BURSTBLOCK (DMADT_2) +#define DMA_TRANSFER_REPEATED_SINGLE (DMADT_4) +#define DMA_TRANSFER_REPEATED_BLOCK (DMADT_5) +#define DMA_TRANSFER_REPEATED_BURSTBLOCK (DMADT_6) + +//***************************************************************************** +// +// The following are values that can be passed to the channelSelect parameter +// for functions: DMA_init(), DMA_setTransferSize(), DMA_getTransferSize(), +// DMA_setSrcAddress(), DMA_setDstAddress(), DMA_enableTransfers(), +// DMA_disableTransfers(), DMA_startTransfer(), DMA_enableInterrupt(), +// DMA_disableInterrupt(), DMA_getInterruptStatus(), DMA_clearInterrupt(), +// DMA_getNMIAbortStatus(), and DMA_clearNMIAbort(); the param parameter for +// functions: DMA_init(). +// +//***************************************************************************** +#define DMA_CHANNEL_0 (0x00) +#define DMA_CHANNEL_1 (0x10) +#define DMA_CHANNEL_2 (0x20) +#define DMA_CHANNEL_3 (0x30) +#define DMA_CHANNEL_4 (0x40) +#define DMA_CHANNEL_5 (0x50) +#define DMA_CHANNEL_6 (0x60) +#define DMA_CHANNEL_7 (0x70) + +//***************************************************************************** +// +// The following are values that can be passed to the triggerTypeSelect +// parameter for functions: DMA_init(); the param parameter for functions: +// DMA_init(). +// +//***************************************************************************** +#define DMA_TRIGGER_RISINGEDGE (!(DMALEVEL)) +#define DMA_TRIGGER_HIGH (DMALEVEL) + +//***************************************************************************** +// +// The following are values that can be passed to the transferUnitSelect +// parameter for functions: DMA_init(); the param parameter for functions: +// DMA_init(). +// +//***************************************************************************** +#define DMA_SIZE_SRCWORD_DSTWORD (!(DMASRCBYTE + DMADSTBYTE)) +#define DMA_SIZE_SRCBYTE_DSTWORD (DMASRCBYTE) +#define DMA_SIZE_SRCWORD_DSTBYTE (DMADSTBYTE) +#define DMA_SIZE_SRCBYTE_DSTBYTE (DMASRCBYTE + DMADSTBYTE) + +//***************************************************************************** +// +// The following are values that can be passed to the directionSelect parameter +// for functions: DMA_setSrcAddress(), and DMA_setDstAddress(). +// +//***************************************************************************** +#define DMA_DIRECTION_UNCHANGED (DMASRCINCR_0) +#define DMA_DIRECTION_DECREMENT (DMASRCINCR_2) +#define DMA_DIRECTION_INCREMENT (DMASRCINCR_3) + +//***************************************************************************** +// +// The following are values that can be passed toThe following are values that +// can be returned by the DMA_getInterruptStatus() function. +// +//***************************************************************************** +#define DMA_INT_INACTIVE (0x0) +#define DMA_INT_ACTIVE (DMAIFG) + +//***************************************************************************** +// +// The following are values that can be passed toThe following are values that +// can be returned by the DMA_getNMIAbortStatus() function. +// +//***************************************************************************** +#define DMA_NOTABORTED (0x0) +#define DMA_ABORTED (DMAABORT) + +//***************************************************************************** +// +// Prototypes for the APIs. +// +//***************************************************************************** + +//***************************************************************************** +// +//! \brief Initializes the specified DMA channel. +//! +//! This function initializes the specified DMA channel. Upon successful +//! completion of initialization of the selected channel the control registers +//! will be cleared and the given variables will be set. Please note, if +//! transfers have been enabled with the enableTransfers() function, then a +//! call to disableTransfers() is necessary before re-initialization. Also +//! note, that the trigger sources are device dependent and can be found in the +//! device family data sheet. The amount of DMA channels available are also +//! device specific. +//! +//! \param param is the pointer to struct for initialization. +//! +//! \return STATUS_SUCCESS or STATUS_FAILURE of the initialization process. +// +//***************************************************************************** +extern void DMA_init(DMA_initParam *param); + +//***************************************************************************** +// +//! \brief Sets the specified amount of transfers for the selected DMA channel. +//! +//! This function sets the specified amount of transfers for the selected DMA +//! channel without having to reinitialize the DMA channel. +//! +//! \param channelSelect is the specified channel to set source address +//! direction for. +//! Valid values are: +//! - \b DMA_CHANNEL_0 +//! - \b DMA_CHANNEL_1 +//! - \b DMA_CHANNEL_2 +//! - \b DMA_CHANNEL_3 +//! - \b DMA_CHANNEL_4 +//! - \b DMA_CHANNEL_5 +//! - \b DMA_CHANNEL_6 +//! - \b DMA_CHANNEL_7 +//! \param transferSize is the amount of transfers to complete in a block +//! transfer mode, as well as how many transfers to complete before the +//! interrupt flag is set. Valid value is between 1-65535, if 0, no +//! transfers will occur. +//! \n Modified bits are \b DMAxSZ of \b DMAxSZ register. +//! +//! \return None +// +//***************************************************************************** +extern void DMA_setTransferSize(uint8_t channelSelect, + uint16_t transferSize); + +//***************************************************************************** +// +//! \brief Gets the amount of transfers for the selected DMA channel. +//! +//! This function gets the amount of transfers for the selected DMA channel +//! without having to reinitialize the DMA channel. +//! +//! \param channelSelect is the specified channel to set source address +//! direction for. +//! Valid values are: +//! - \b DMA_CHANNEL_0 +//! - \b DMA_CHANNEL_1 +//! - \b DMA_CHANNEL_2 +//! - \b DMA_CHANNEL_3 +//! - \b DMA_CHANNEL_4 +//! - \b DMA_CHANNEL_5 +//! - \b DMA_CHANNEL_6 +//! - \b DMA_CHANNEL_7 +//! +//! \return the amount of transfers +// +//***************************************************************************** +extern uint16_t DMA_getTransferSize(uint8_t channelSelect); + +//***************************************************************************** +// +//! \brief Sets source address and the direction that the source address will +//! move after a transfer. +//! +//! This function sets the source address and the direction that the source +//! address will move after a transfer is complete. It may be incremented, +//! decremented or unchanged. +//! +//! \param channelSelect is the specified channel to set source address +//! direction for. +//! Valid values are: +//! - \b DMA_CHANNEL_0 +//! - \b DMA_CHANNEL_1 +//! - \b DMA_CHANNEL_2 +//! - \b DMA_CHANNEL_3 +//! - \b DMA_CHANNEL_4 +//! - \b DMA_CHANNEL_5 +//! - \b DMA_CHANNEL_6 +//! - \b DMA_CHANNEL_7 +//! \param srcAddress is the address of where the data will be transferred +//! from. +//! \n Modified bits are \b DMAxSA of \b DMAxSA register. +//! \param directionSelect is the specified direction of the source address +//! after a transfer. +//! Valid values are: +//! - \b DMA_DIRECTION_UNCHANGED +//! - \b DMA_DIRECTION_DECREMENT +//! - \b DMA_DIRECTION_INCREMENT +//! \n Modified bits are \b DMASRCINCR of \b DMAxCTL register. +//! +//! \return None +// +//***************************************************************************** +extern void DMA_setSrcAddress(uint8_t channelSelect, + uint32_t srcAddress, + uint16_t directionSelect); + +//***************************************************************************** +// +//! \brief Sets the destination address and the direction that the destination +//! address will move after a transfer. +//! +//! This function sets the destination address and the direction that the +//! destination address will move after a transfer is complete. It may be +//! incremented, decremented, or unchanged. +//! +//! \param channelSelect is the specified channel to set the destination +//! address direction for. +//! Valid values are: +//! - \b DMA_CHANNEL_0 +//! - \b DMA_CHANNEL_1 +//! - \b DMA_CHANNEL_2 +//! - \b DMA_CHANNEL_3 +//! - \b DMA_CHANNEL_4 +//! - \b DMA_CHANNEL_5 +//! - \b DMA_CHANNEL_6 +//! - \b DMA_CHANNEL_7 +//! \param dstAddress is the address of where the data will be transferred to. +//! \n Modified bits are \b DMAxDA of \b DMAxDA register. +//! \param directionSelect is the specified direction of the destination +//! address after a transfer. +//! Valid values are: +//! - \b DMA_DIRECTION_UNCHANGED +//! - \b DMA_DIRECTION_DECREMENT +//! - \b DMA_DIRECTION_INCREMENT +//! \n Modified bits are \b DMADSTINCR of \b DMAxCTL register. +//! +//! \return None +// +//***************************************************************************** +extern void DMA_setDstAddress(uint8_t channelSelect, + uint32_t dstAddress, + uint16_t directionSelect); + +//***************************************************************************** +// +//! \brief Enables transfers to be triggered. +//! +//! This function enables transfers upon appropriate trigger of the selected +//! trigger source for the selected channel. +//! +//! \param channelSelect is the specified channel to enable transfer for. +//! Valid values are: +//! - \b DMA_CHANNEL_0 +//! - \b DMA_CHANNEL_1 +//! - \b DMA_CHANNEL_2 +//! - \b DMA_CHANNEL_3 +//! - \b DMA_CHANNEL_4 +//! - \b DMA_CHANNEL_5 +//! - \b DMA_CHANNEL_6 +//! - \b DMA_CHANNEL_7 +//! +//! \return None +// +//***************************************************************************** +extern void DMA_enableTransfers(uint8_t channelSelect); + +//***************************************************************************** +// +//! \brief Disables transfers from being triggered. +//! +//! This function disables transfer from being triggered for the selected +//! channel. This function should be called before any re-initialization of the +//! selected DMA channel. +//! +//! \param channelSelect is the specified channel to disable transfers for. +//! Valid values are: +//! - \b DMA_CHANNEL_0 +//! - \b DMA_CHANNEL_1 +//! - \b DMA_CHANNEL_2 +//! - \b DMA_CHANNEL_3 +//! - \b DMA_CHANNEL_4 +//! - \b DMA_CHANNEL_5 +//! - \b DMA_CHANNEL_6 +//! - \b DMA_CHANNEL_7 +//! +//! \return None +// +//***************************************************************************** +extern void DMA_disableTransfers(uint8_t channelSelect); + +//***************************************************************************** +// +//! \brief Starts a transfer if using the default trigger source selected in +//! initialization. +//! +//! This functions triggers a transfer of data from source to destination if +//! the trigger source chosen from initialization is the DMA_TRIGGERSOURCE_0. +//! Please note, this function needs to be called for each (repeated-)single +//! transfer, and when transferAmount of transfers have been complete in +//! (repeated-)block transfers. +//! +//! \param channelSelect is the specified channel to start transfers for. +//! Valid values are: +//! - \b DMA_CHANNEL_0 +//! - \b DMA_CHANNEL_1 +//! - \b DMA_CHANNEL_2 +//! - \b DMA_CHANNEL_3 +//! - \b DMA_CHANNEL_4 +//! - \b DMA_CHANNEL_5 +//! - \b DMA_CHANNEL_6 +//! - \b DMA_CHANNEL_7 +//! +//! \return None +// +//***************************************************************************** +extern void DMA_startTransfer(uint8_t channelSelect); + +//***************************************************************************** +// +//! \brief Enables the DMA interrupt for the selected channel. +//! +//! Enables the DMA interrupt source. Only the sources that are enabled can be +//! reflected to the processor interrupt; disabled sources have no effect on +//! the processor. Does not clear interrupt flags. +//! +//! \param channelSelect is the specified channel to enable the interrupt for. +//! Valid values are: +//! - \b DMA_CHANNEL_0 +//! - \b DMA_CHANNEL_1 +//! - \b DMA_CHANNEL_2 +//! - \b DMA_CHANNEL_3 +//! - \b DMA_CHANNEL_4 +//! - \b DMA_CHANNEL_5 +//! - \b DMA_CHANNEL_6 +//! - \b DMA_CHANNEL_7 +//! +//! \return None +// +//***************************************************************************** +extern void DMA_enableInterrupt(uint8_t channelSelect); + +//***************************************************************************** +// +//! \brief Disables the DMA interrupt for the selected channel. +//! +//! Disables the DMA interrupt source. Only the sources that are enabled can be +//! reflected to the processor interrupt; disabled sources have no effect on +//! the processor. +//! +//! \param channelSelect is the specified channel to disable the interrupt for. +//! Valid values are: +//! - \b DMA_CHANNEL_0 +//! - \b DMA_CHANNEL_1 +//! - \b DMA_CHANNEL_2 +//! - \b DMA_CHANNEL_3 +//! - \b DMA_CHANNEL_4 +//! - \b DMA_CHANNEL_5 +//! - \b DMA_CHANNEL_6 +//! - \b DMA_CHANNEL_7 +//! +//! \return None +// +//***************************************************************************** +extern void DMA_disableInterrupt(uint8_t channelSelect); + +//***************************************************************************** +// +//! \brief Returns the status of the interrupt flag for the selected channel. +//! +//! Returns the status of the interrupt flag for the selected channel. +//! +//! \param channelSelect is the specified channel to return the interrupt flag +//! status from. +//! Valid values are: +//! - \b DMA_CHANNEL_0 +//! - \b DMA_CHANNEL_1 +//! - \b DMA_CHANNEL_2 +//! - \b DMA_CHANNEL_3 +//! - \b DMA_CHANNEL_4 +//! - \b DMA_CHANNEL_5 +//! - \b DMA_CHANNEL_6 +//! - \b DMA_CHANNEL_7 +//! +//! \return One of the following: +//! - \b DMA_INT_INACTIVE +//! - \b DMA_INT_ACTIVE +//! \n indicating the status of the current interrupt flag +// +//***************************************************************************** +extern uint16_t DMA_getInterruptStatus(uint8_t channelSelect); + +//***************************************************************************** +// +//! \brief Clears the interrupt flag for the selected channel. +//! +//! This function clears the DMA interrupt flag is cleared, so that it no +//! longer asserts. +//! +//! \param channelSelect is the specified channel to clear the interrupt flag +//! for. +//! Valid values are: +//! - \b DMA_CHANNEL_0 +//! - \b DMA_CHANNEL_1 +//! - \b DMA_CHANNEL_2 +//! - \b DMA_CHANNEL_3 +//! - \b DMA_CHANNEL_4 +//! - \b DMA_CHANNEL_5 +//! - \b DMA_CHANNEL_6 +//! - \b DMA_CHANNEL_7 +//! +//! \return None +// +//***************************************************************************** +extern void DMA_clearInterrupt(uint8_t channelSelect); + +//***************************************************************************** +// +//! \brief Returns the status of the NMIAbort for the selected channel. +//! +//! This function returns the status of the NMI Abort flag for the selected +//! channel. If this flag has been set, it is because a transfer on this +//! channel was aborted due to a interrupt from an NMI. +//! +//! \param channelSelect is the specified channel to return the status of the +//! NMI Abort flag for. +//! Valid values are: +//! - \b DMA_CHANNEL_0 +//! - \b DMA_CHANNEL_1 +//! - \b DMA_CHANNEL_2 +//! - \b DMA_CHANNEL_3 +//! - \b DMA_CHANNEL_4 +//! - \b DMA_CHANNEL_5 +//! - \b DMA_CHANNEL_6 +//! - \b DMA_CHANNEL_7 +//! +//! \return One of the following: +//! - \b DMA_NOTABORTED +//! - \b DMA_ABORTED +//! \n indicating the status of the NMIAbort for the selected channel +// +//***************************************************************************** +extern uint16_t DMA_getNMIAbortStatus(uint8_t channelSelect); + +//***************************************************************************** +// +//! \brief Clears the status of the NMIAbort to proceed with transfers for the +//! selected channel. +//! +//! This function clears the status of the NMI Abort flag for the selected +//! channel to allow for transfers on the channel to continue. +//! +//! \param channelSelect is the specified channel to clear the NMI Abort flag +//! for. +//! Valid values are: +//! - \b DMA_CHANNEL_0 +//! - \b DMA_CHANNEL_1 +//! - \b DMA_CHANNEL_2 +//! - \b DMA_CHANNEL_3 +//! - \b DMA_CHANNEL_4 +//! - \b DMA_CHANNEL_5 +//! - \b DMA_CHANNEL_6 +//! - \b DMA_CHANNEL_7 +//! +//! \return None +// +//***************************************************************************** +extern void DMA_clearNMIAbort(uint8_t channelSelect); + +//***************************************************************************** +// +//! \brief Disables the DMA from stopping the CPU during a Read-Modify-Write +//! Operation to start a transfer. +//! +//! This function allows the CPU to finish any read-modify-write operations it +//! may be in the middle of before transfers of and DMA channel stop the CPU. +//! +//! +//! \return None +// +//***************************************************************************** +extern void DMA_disableTransferDuringReadModifyWrite(void); + +//***************************************************************************** +// +//! \brief Enables the DMA to stop the CPU during a Read-Modify-Write Operation +//! to start a transfer. +//! +//! This function allows the DMA to stop the CPU in the middle of a read- +//! modify-write operation to transfer data. +//! +//! +//! \return None +// +//***************************************************************************** +extern void DMA_enableTransferDuringReadModifyWrite(void); + +//***************************************************************************** +// +//! \brief Enables Round Robin prioritization. +//! +//! This function enables Round Robin Prioritization of DMA channels. In the +//! case of Round Robin Prioritization, the last DMA channel to have +//! transferred data then has the last priority, which comes into play when +//! multiple DMA channels are ready to transfer at the same time. +//! +//! +//! \return None +// +//***************************************************************************** +extern void DMA_enableRoundRobinPriority(void); + +//***************************************************************************** +// +//! \brief Disables Round Robin prioritization. +//! +//! This function disables Round Robin Prioritization, enabling static +//! prioritization of the DMA channels. In static prioritization, the DMA +//! channels are prioritized with the lowest DMA channel index having the +//! highest priority (i.e. DMA Channel 0 has the highest priority). +//! +//! +//! \return None +// +//***************************************************************************** +extern void DMA_disableRoundRobinPriority(void); + +//***************************************************************************** +// +//! \brief Enables a NMI to interrupt a DMA transfer. +//! +//! This function allow NMI's to interrupting any DMA transfer currently in +//! progress and stops any future transfers to begin before the NMI is done +//! processing. +//! +//! +//! \return None +// +//***************************************************************************** +extern void DMA_enableNMIAbort(void); + +//***************************************************************************** +// +//! \brief Disables any NMI from interrupting a DMA transfer. +//! +//! This function disables NMI's from interrupting any DMA transfer currently +//! in progress. +//! +//! +//! \return None +// +//***************************************************************************** +extern void DMA_disableNMIAbort(void); + +//***************************************************************************** +// +// Mark the end of the C bindings section for C++ compilers. +// +//***************************************************************************** +#ifdef __cplusplus +} +#endif + +#endif +#endif // __MSP430WARE_DMA_H__ |