Diff: targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/dma_api_HAL.h

Revision:

0:9b334a45a8ff

Child:

50:a417edff4437

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/dma_api_HAL.h	Thu Oct 01 15:25:22 2015 +0300
@@ -0,0 +1,77 @@
+/***************************************************************************//**
+ * @file dma_api_HAL.h
+ *******************************************************************************
+ * @section License
+ * <b>(C) Copyright 2015 Silicon Labs, http://www.silabs.com</b>
+ *******************************************************************************
+ *
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ *
+ * 1. The origin of this software must not be misrepresented; you must not
+ *    claim that you wrote the original software.
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ *    misrepresented as being the original software.
+ * 3. This notice may not be removed or altered from any source distribution.
+ *
+ * DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Silicon Labs has no
+ * obligation to support this Software. Silicon Labs is providing the
+ * Software "AS IS", with no express or implied warranties of any kind,
+ * including, but not limited to, any implied warranties of merchantability
+ * or fitness for any particular purpose or warranties against infringement
+ * of any proprietary rights of a third party.
+ *
+ * Silicon Labs will not be liable for any consequential, incidental, or
+ * special damages, or any other relief, or for any claim by any third party,
+ * arising from your use of this Software.
+ *
+ ******************************************************************************/
+
+#ifndef MBED_DMA_API_HAL_H
+#define MBED_DMA_API_HAL_H
+
+#include <stdint.h>
+#include "dma_api.h"
+#include "em_dma.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Purpose of this file: extend dma_api.h to include EFM-specific DMA attributes */
+
+#define DMA_CAP_2DCOPY (1 << 0)
+#define DMA_CAP_NONE   (0 << 0)
+
+#if ( DMA_CHAN_COUNT <= 4 )
+#define DMACTRL_CH_CNT      4
+#define DMACTRL_ALIGNMENT   256
+
+#elif ( ( DMA_CHAN_COUNT > 4 ) && ( DMA_CHAN_COUNT <= 8 ) )
+#define DMACTRL_CH_CNT      8
+#define DMACTRL_ALIGNMENT   256
+
+#elif ( ( DMA_CHAN_COUNT > 8 ) && ( DMA_CHAN_COUNT <= 16 ) )
+#define DMACTRL_CH_CNT      16
+#define DMACTRL_ALIGNMENT   512
+
+#else
+#error "Unsupported DMA channel count (dma_api.c)."
+#endif
+
+typedef struct {
+    DMAUsage dmaUsageState;
+    int dmaChannel;
+    DMA_CB_TypeDef dmaCallback;
+} DMA_OPTIONS_t;
+
+typedef void (*DMACallback)(void);
+
+extern DMA_DESCRIPTOR_TypeDef dmaControlBlock[];
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif