339 lines
15 KiB
C
339 lines
15 KiB
C
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//*****************************************************************************
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//
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// udma.h - Prototypes and macros for the uDMA controller.
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//
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// Copyright (c) 2007-2009 Luminary Micro, Inc. All rights reserved.
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// Software License Agreement
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//
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// Luminary Micro, Inc. (LMI) is supplying this software for use solely and
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// exclusively on LMI's microcontroller products.
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//
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// The software is owned by LMI and/or its suppliers, and is protected under
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// applicable copyright laws. All rights are reserved. You may not combine
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// this software with "viral" open-source software in order to form a larger
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// program. Any use in violation of the foregoing restrictions may subject
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// the user to criminal sanctions under applicable laws, as well as to civil
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// liability for the breach of the terms and conditions of this license.
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//
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// THIS SOFTWARE IS PROVIDED "AS IS". NO WARRANTIES, WHETHER EXPRESS, IMPLIED
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// OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
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// LMI SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR
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// CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
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//
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// This is part of revision 4694 of the Stellaris Peripheral Driver Library.
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//
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//*****************************************************************************
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#ifndef __UDMA_H__
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#define __UDMA_H__
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//*****************************************************************************
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//
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// If building with a C++ compiler, make all of the definitions in this header
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// have a C binding.
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//
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//*****************************************************************************
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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//*****************************************************************************
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//
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// A structure that defines an entry in the channel control table. These
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// fields are used by the uDMA controller and normally it is not necessary for
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// software to directly read or write fields in the table.
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//
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//*****************************************************************************
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typedef struct
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{
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//
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// The ending source address of the data transfer.
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//
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volatile void *pvSrcEndAddr;
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//
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// The ending destination address of the data transfer.
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//
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volatile void *pvDstEndAddr;
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//
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// The channel control mode.
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//
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volatile unsigned long ulControl;
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//
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// An unused location.
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//
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volatile unsigned long ulSpare;
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}
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tDMAControlTable;
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//*****************************************************************************
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//
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// Flags that can be passed to uDMAChannelAttributeEnable(),
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// uDMAChannelAttributeDisable(), and returned from uDMAChannelAttributeGet().
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//
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//*****************************************************************************
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#define UDMA_ATTR_USEBURST 0x00000001
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#define UDMA_ATTR_ALTSELECT 0x00000002
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#define UDMA_ATTR_HIGH_PRIORITY 0x00000004
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#define UDMA_ATTR_REQMASK 0x00000008
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#define UDMA_ATTR_ALL 0x0000000F
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//*****************************************************************************
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//
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// DMA control modes that can be passed to uDMAModeSet() and returned
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// uDMAModeGet().
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//
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//*****************************************************************************
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#define UDMA_MODE_STOP 0x00000000
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#define UDMA_MODE_BASIC 0x00000001
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#define UDMA_MODE_AUTO 0x00000002
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#define UDMA_MODE_PINGPONG 0x00000003
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#define UDMA_MODE_MEM_SCATTER_GATHER \
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0x00000004
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#define UDMA_MODE_PER_SCATTER_GATHER \
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0x00000006
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#define UDMA_MODE_ALT_SELECT 0x00000001
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//*****************************************************************************
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//
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// Channel configuration values that can be passed to uDMAControlSet().
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//
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//*****************************************************************************
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#define UDMA_DST_INC_8 0x00000000
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#define UDMA_DST_INC_16 0x40000000
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#define UDMA_DST_INC_32 0x80000000
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#define UDMA_DST_INC_NONE 0xc0000000
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#define UDMA_SRC_INC_8 0x00000000
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#define UDMA_SRC_INC_16 0x04000000
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#define UDMA_SRC_INC_32 0x08000000
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#define UDMA_SRC_INC_NONE 0x0c000000
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#define UDMA_SIZE_8 0x00000000
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#define UDMA_SIZE_16 0x11000000
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#define UDMA_SIZE_32 0x22000000
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#define UDMA_ARB_1 0x00000000
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#define UDMA_ARB_2 0x00004000
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#define UDMA_ARB_4 0x00008000
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#define UDMA_ARB_8 0x0000c000
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#define UDMA_ARB_16 0x00010000
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#define UDMA_ARB_32 0x00014000
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#define UDMA_ARB_64 0x00018000
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#define UDMA_ARB_128 0x0001c000
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#define UDMA_ARB_256 0x00020000
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#define UDMA_ARB_512 0x00024000
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#define UDMA_ARB_1024 0x00028000
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#define UDMA_NEXT_USEBURST 0x00000008
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//*****************************************************************************
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//
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// Channel numbers to be passed to API functions that require a channel number
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// ID.
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//
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//*****************************************************************************
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#define UDMA_CHANNEL_USBEP1RX 0
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#define UDMA_CHANNEL_USBEP1TX 1
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#define UDMA_CHANNEL_USBEP2RX 2
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#define UDMA_CHANNEL_USBEP2TX 3
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#define UDMA_CHANNEL_USBEP3RX 4
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#define UDMA_CHANNEL_USBEP3TX 5
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#define UDMA_CHANNEL_ETH0RX 6
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#define UDMA_CHANNEL_ETH0TX 7
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#define UDMA_CHANNEL_UART0RX 8
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#define UDMA_CHANNEL_UART0TX 9
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#define UDMA_CHANNEL_SSI0RX 10
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#define UDMA_CHANNEL_SSI0TX 11
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#define UDMA_CHANNEL_ADC0 14
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#define UDMA_CHANNEL_ADC1 15
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#define UDMA_CHANNEL_ADC2 16
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#define UDMA_CHANNEL_ADC3 17
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#define UDMA_CHANNEL_TMR0A 18
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#define UDMA_CHANNEL_TMR0B 19
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#define UDMA_CHANNEL_TMR1A 20
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#define UDMA_CHANNEL_TMR1B 21
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#define UDMA_CHANNEL_UART1RX 22
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#define UDMA_CHANNEL_UART1TX 23
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#define UDMA_CHANNEL_SSI1RX 24
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#define UDMA_CHANNEL_SSI1TX 25
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#define UDMA_CHANNEL_I2S0RX 28
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#define UDMA_CHANNEL_I2S0TX 29
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#define UDMA_CHANNEL_SW 30
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//*****************************************************************************
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//
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// Flags to be OR'd with the channel ID to indicate if the primary or alternate
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// control structure should be used.
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//
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//*****************************************************************************
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#define UDMA_PRI_SELECT 0x00000000
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#define UDMA_ALT_SELECT 0x00000020
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//*****************************************************************************
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//
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// uDMA interrupt sources, to be passed to uDMAIntRegister() and
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// uDMAIntUnregister().
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//
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//*****************************************************************************
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#define UDMA_INT_SW 62
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#define UDMA_INT_ERR 63
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//*****************************************************************************
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//
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// Channel numbers to be passed to API functions that require a channel number
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// ID. These are for secondary peripheral assignments.
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//
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//*****************************************************************************
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#define UDMA_SEC_CHANNEL_UART2RX_0 \
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0
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#define UDMA_SEC_CHANNEL_UART2TX_1 \
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1
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#define UDMA_SEC_CHANNEL_TMR3A 2
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#define UDMA_SEC_CHANNEL_TMR3B 3
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#define UDMA_SEC_CHANNEL_TMR2A_4 \
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4
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#define UDMA_SEC_CHANNEL_TMR2B_5 \
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5
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#define UDMA_SEC_CHANNEL_TMR2A_6 \
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6
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#define UDMA_SEC_CHANNEL_TMR2B_7 \
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7
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#define UDMA_SEC_CHANNEL_UART1RX \
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8
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#define UDMA_SEC_CHANNEL_UART1TX \
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9
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#define UDMA_SEC_CHANNEL_SSI1RX 10
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#define UDMA_SEC_CHANNEL_SSI1TX 11
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#define UDMA_SEC_CHANNEL_UART2RX_12 \
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12
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#define UDMA_SEC_CHANNEL_UART2TX_13 \
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13
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#define UDMA_SEC_CHANNEL_TMR2A_14 \
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14
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#define UDMA_SEC_CHANNEL_TMR2B_15 \
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15
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#define UDMA_SEC_CHANNEL_TMR1A 18
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#define UDMA_SEC_CHANNEL_TMR1B 19
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#define UDMA_SEC_CHANNEL_EPI0RX 20
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#define UDMA_SEC_CHANNEL_EPI0TX 21
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#define UDMA_SEC_CHANNEL_ADC10 24
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#define UDMA_SEC_CHANNEL_ADC11 25
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#define UDMA_SEC_CHANNEL_ADC12 26
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#define UDMA_SEC_CHANNEL_ADC13 27
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#define UDMA_SEC_CHANNEL_SW 30
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//*****************************************************************************
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//
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// uDMA default/secondary peripheral selections, to be passed to
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// uDMAChannelSelectSecondary() and uDMAChannelSelectDefault().
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//
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//*****************************************************************************
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#define UDMA_DEF_USBEP1RX_SEC_UART2RX \
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0x00000001
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#define UDMA_DEF_USBEP1TX_SEC_UART2TX \
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0x00000002
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#define UDMA_DEF_USBEP2RX_SEC_TMR3A \
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0x00000004
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#define UDMA_DEF_USBEP2TX_SEC_TMR3B \
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0x00000008
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#define UDMA_DEF_USBEP3RX_SEC_TMR2A \
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0x00000010
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#define UDMA_DEF_USBEP3TX_SEC_TMR2B \
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0x00000020
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#define UDMA_DEF_ETH0RX_SEC_TMR2A \
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0x00000040
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#define UDMA_DEF_ETH0TX_SEC_TMR2B \
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0x00000080
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#define UDMA_DEF_UART0RX_SEC_UART1RX \
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0x00000100
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#define UDMA_DEF_UART0TX_SEC_UART1TX \
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0x00000200
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#define UDMA_DEF_SSI0RX_SEC_SSI1RX \
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0x00000400
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#define UDMA_DEF_SSI0TX_SEC_SSI1TX \
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0x00000800
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#define UDMA_DEF_RESERVED_SEC_UART2RX \
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0x00001000
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#define UDMA_DEF_RESERVED_SEC_UART2TX \
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0x00002000
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#define UDMA_DEF_ADC00_SEC_TMR2A \
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0x00004000
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#define UDMA_DEF_ADC01_SEC_TMR2B \
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0x00008000
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#define UDMA_DEF_ADC02_SEC_RESERVED \
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0x00010000
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#define UDMA_DEF_ADC03_SEC_RESERVED \
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0x00020000
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#define UDMA_DEF_TMR0A_SEC_TMR1A \
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0x00040000
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#define UDMA_DEF_TMR0B_SEC_TMR1B \
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0x00080000
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#define UDMA_DEF_TMR1A_SEC_EPI0RX \
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0x00100000
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#define UDMA_DEF_TMR1B_SEC_EPI0TX \
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0x00200000
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#define UDMA_DEF_UART1RX_SEC_RESERVED \
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0x00400000
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#define UDMA_DEF_UART1TX_SEC_RESERVED \
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0x00800000
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#define UDMA_DEF_SSI1RX_SEC_ADC10 \
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0x01000000
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#define UDMA_DEF_SSI1TX_SEC_ADC11 \
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0x02000000
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#define UDMA_DEF_RESERVED_SEC_ADC12 \
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0x04000000
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#define UDMA_DEF_RESERVED_SEC_ADC13 \
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0x08000000
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#define UDMA_DEF_I2S0RX_SEC_RESERVED \
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0x10000000
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#define UDMA_DEF_I2S0TX_SEC_RESERVED \
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0x20000000
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//*****************************************************************************
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//
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// API Function prototypes
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//
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//*****************************************************************************
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extern void uDMAEnable(void);
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extern void uDMADisable(void);
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extern unsigned long uDMAErrorStatusGet(void);
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extern void uDMAErrorStatusClear(void);
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extern void uDMAChannelEnable(unsigned long ulChannel);
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extern void uDMAChannelDisable(unsigned long ulChannel);
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extern tBoolean uDMAChannelIsEnabled(unsigned long ulChannel);
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extern void uDMAControlBaseSet(void *pControlTable);
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extern void *uDMAControlBaseGet(void);
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extern void uDMAChannelRequest(unsigned long ulChannel);
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extern void uDMAChannelAttributeEnable(unsigned long ulChannel,
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unsigned long ulAttr);
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extern void uDMAChannelAttributeDisable(unsigned long ulChannel,
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unsigned long ulAttr);
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extern unsigned long uDMAChannelAttributeGet(unsigned long ulChannel);
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extern void uDMAChannelControlSet(unsigned long ulChannel,
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unsigned long ulControl);
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extern void uDMAChannelTransferSet(unsigned long ulChannel,
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unsigned long ulMode, void *pvSrcAddr,
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void *pvDstAddr,
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unsigned long ulTransferSize);
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extern unsigned long uDMAChannelSizeGet(unsigned long ulChannel);
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extern unsigned long uDMAChannelModeGet(unsigned long ulChannel);
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extern void uDMAIntRegister(unsigned long ulIntChannel,
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void (*pfnHandler)(void));
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extern void uDMAIntUnregister(unsigned long ulIntChannel);
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extern void uDMAChannelSelectDefault(unsigned long ulDefPeriphs);
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extern void uDMAChannelSelectSecondary(unsigned long ulSecPeriphs);
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extern unsigned long uDMAIntStatus(void);
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extern void uDMAIntClear(unsigned long ulChanMask);
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//*****************************************************************************
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//
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// Mark the end of the C bindings section for C++ compilers.
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//
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//*****************************************************************************
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#ifdef __cplusplus
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}
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#endif
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#endif // __UDMA_H__
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