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Diffstat (limited to 'peripherals/dma/dma.h')
| -rw-r--r-- | peripherals/dma/dma.h | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/peripherals/dma/dma.h b/peripherals/dma/dma.h new file mode 100644 index 0000000..dbf50b9 --- /dev/null +++ b/peripherals/dma/dma.h @@ -0,0 +1,190 @@ +/* ----------------------------------------------------------------------------
+ * ATMEL Microcontroller Software Support - ROUSSET -
+ * ----------------------------------------------------------------------------
+ * Copyright (c) 2006, 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 disclaiimer below.
+ *
+ * - Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the disclaimer below in the documentation and/or
+ * other materials provided with the distribution.
+ *
+ * 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.
+ * ----------------------------------------------------------------------------
+ */
+
+//------------------------------------------------------------------------------
+/// \dir
+/// !Purpose
+///
+/// Interface for configuration the %DMA controller(DMAC).
+///
+/// !Usage
+///
+/// -# Enable or disable the a DMAC controller with
+/// DMA_Enable() and or DMA_Disable().
+/// -# Enable or disable %Dma interrupt using DMA_EnableIt()
+/// or DMA_DisableIt().
+/// -# Get %Dma interrupt status by DMA_GetStatus().
+/// -# Enable or disable specified %Dma channel with
+/// DMA_EnableChannel() or DMA_DisableChannel().
+/// -# Get %Dma channel status by DMA_GetChannelStatus().
+/// -# Configure source and/or destination start address with
+/// DMA_SetSourceAddr() and/or DMA_SetDestAddr().
+/// -# Set %Dma descriptor address using DMA_SetDescriptorAddr().
+/// -# Set source transfer buffer size with DMA_SetSourceBufferSize().
+/// -# Configure source and/or destination transfer mode with
+/// DMA_SetSourceBufferMode() and/or DMA_SetDestBufferMode().
+/// -# Configure source and/or destination Picture-In-Picutre
+/// mode with DMA_SPIPconfiguration() and/or DMA_DPIPconfiguration().
+//------------------------------------------------------------------------------
+
+#ifndef DMA_H
+#define DMA_H
+
+#include <board.h>
+
+//------------------------------------------------------------------------------
+// Definitions
+//------------------------------------------------------------------------------
+#define DMA_CHANNEL_0 0
+#define DMA_CHANNEL_1 1
+#define DMA_CHANNEL_2 2
+#define DMA_CHANNEL_3 3
+#define DMA_CHANNEL_4 4
+#define DMA_CHANNEL_5 5
+#define DMA_CHANNEL_6 6
+#define DMA_CHANNEL_7 7
+
+#if defined(CHIP_DMA_CHANNEL_NUM)
+#define DMA_CHANNEL_NUM CHIP_DMA_CHANNEL_NUM
+#endif
+
+#define DMA_TRANSFER_SINGLE 0
+#define DMA_TRANSFER_LLI 1
+#define DMA_TRANSFER_RELOAD 2
+#define DMA_TRANSFER_CONTIGUOUS 3
+
+
+#define DMA_ENA (1 << 0)
+#define DMA_DIS (1 << 0)
+#define DMA_SUSP (1 << 8)
+#define DMA_KEEPON (1 << 24)
+
+#define DMA_BTC (1 << 0)
+#define DMA_CBTC (1 << 8)
+#define DMA_ERR (1 << 16)
+
+#ifdef AT91C_HDMA_SRC_DSCR
+ #define AT91C_SRC_DSCR AT91C_HDMA_SRC_DSCR
+ #define AT91C_DST_DSCR AT91C_HDMA_DST_DSCR
+ #define AT91C_SRC_INCR AT91C_HDMA_SRC_ADDRESS_MODE
+ #define AT91C_DST_INCR AT91C_HDMA_DST_ADDRESS_MODE
+ #define AT91C_SRC_PER AT91C_HDMA_SRC_PER
+ #define AT91C_DST_PER AT91C_HDMA_DST_PER
+#if defined(AT91C_HDMA_SRC_REP)
+ #define AT91C_SRC_REP AT91C_HDMA_SRC_REP
+#endif
+#if defined(AT91C_HDMA_DST_REP)
+ #define AT91C_DST_REP AT91C_HDMA_DST_REP
+#endif
+#if defined(AT91C_HDMA_SRC_PIP)
+ #define AT91C_SRC_PIP AT91C_HDMA_SRC_PIP
+#endif
+#if defined(AT91C_HDMA_DST_PIP)
+ #define AT91C_DST_PIP AT91C_HDMA_DST_PIP
+#endif
+ #define AT91C_FC AT91C_HDMA_FC
+
+ #define AT91C_BTC (0xFF << 0)
+ #define AT91C_CBTC (0xFF << 8)
+ #define AT91C_ERR (0xFF << 16)
+#endif
+
+//------------------------------------------------------------------------------
+// Exported functions
+//------------------------------------------------------------------------------
+
+extern void DMA_Config(unsigned int flag);
+
+extern void DMA_Enable(void);
+
+extern void DMA_Disable(void);
+
+extern void DMA_EnableChannel(unsigned int channel);
+extern void DMA_EnableChannels(unsigned int bmChannels);
+
+extern void DMA_DisableChannel(unsigned int channel);
+extern void DMA_DisableChannels(unsigned int bmChannels);
+
+extern void DMA_KeeponChannel(unsigned int channel);
+
+extern void DMA_ClearAutoMode(unsigned int channel);
+
+extern unsigned int DMA_GetChannelStatus(void);
+
+extern unsigned int DMA_GetStatus(void);
+
+extern unsigned int DMA_GetInterruptMask(void);
+
+extern unsigned int DMA_GetMaskedStatus(void);
+
+extern void DMA_EnableIt (unsigned int flag);
+
+extern void DMA_DisableIt (unsigned int flag);
+
+extern void DMA_SetSourceAddr(unsigned char channel, unsigned int address);
+
+extern void DMA_SetDestinationAddr(unsigned char channel, unsigned int address);
+
+extern void DMA_SetDescriptorAddr(unsigned char channel, unsigned int address);
+
+extern void DMA_SetSourceBufferSize(unsigned char channel,
+ unsigned int size,
+ unsigned char sourceWidth,
+ unsigned char desDMAdth,
+ unsigned char done);
+
+extern void DMA_SetSourceBufferMode(unsigned char channel,
+ unsigned char transferMode,
+ unsigned char addressingType);
+
+extern void DMA_SetDestBufferMode(unsigned char channel,
+ unsigned char transferMode,
+ unsigned char addressingType);
+
+extern void DMA_SetConfiguration(unsigned char channel, unsigned int value);
+
+#if defined(AT91C_SRC_PIP)
+extern void DMA_SPIPconfiguration(unsigned char channel,
+ unsigned int pipHole, unsigned int pipBoundary);
+#endif
+
+#if defined(AT91C_DST_PIP)
+extern void DMA_DPIPconfiguration(unsigned char channel,
+ unsigned int pipHole, unsigned int pipBoundary);
+#endif
+
+extern void DMA_SetFlowControl(unsigned char channel,
+ unsigned int flow);
+
+
+#endif //#ifndef DMA_H
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