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

Revision:

525:c320967f86b9

Child:

548:1abac31e188e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/dma_api_HAL.h	Tue Apr 28 11:45:12 2015 +0100
@@ -0,0 +1,62 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2013 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#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