Diff: targets/TARGET_Silicon_Labs/TARGET_EFM32/dma_api_HAL.h

Revision:

149:156823d33999

Parent:

144:ef7eb2e8f9f7

Child:

179:b0033dcd6934

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_Silicon_Labs/TARGET_EFM32/dma_api_HAL.h	Fri Oct 28 11:17:30 2016 +0100
@@ -0,0 +1,99 @@
+/***************************************************************************//**
+ * @file dma_api_HAL.h
+ *******************************************************************************
+ * @section License
+ * <b>(C) Copyright 2015 Silicon Labs, http://www.silabs.com</b>
+ *******************************************************************************
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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_device.h"
+
+#ifdef DMA_PRESENT
+#include "em_dma.h"
+#endif
+
+#ifdef LDMA_PRESENT
+#include "em_ldma.h"
+#endif
+
+#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
+
+#ifdef LDMA_PRESENT
+typedef void (*LDMAx_CBFunc_t)(unsigned int channel, bool primary, void *user);
+
+typedef struct
+{
+    LDMAx_CBFunc_t cbFunc;
+    void *userPtr;
+} LDMAx_Callback_t;
+
+void LDMAx_StartTransfer(  int ch,
+                           LDMA_TransferCfg_t *transfer,
+                           LDMA_Descriptor_t  *descriptor,
+                           LDMAx_CBFunc_t cbFunc,
+                           void *userData );
+bool LDMAx_ChannelEnabled( int ch );
+#endif
+
+typedef struct {
+    DMAUsage dmaUsageState;
+    int dmaChannel;
+#ifndef LDMA_PRESENT
+    DMA_CB_TypeDef dmaCallback;
+#else
+    LDMAx_Callback_t dmaCallback;
+#endif
+} DMA_OPTIONS_t;
+
+typedef void (*DMACallback)(void);
+
+extern DMA_DESCRIPTOR_TypeDef dmaControlBlock[];
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif