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authorVasil Zlatanov <v@skozl.com>2017-05-03 16:30:16 +0100
committerVasil Zlatanov <v@skozl.com>2017-05-03 16:30:16 +0100
commita6ed1742539c62186fb903017b52dd48f145ae4f (patch)
treee9f49f0437e1f260b276b45fddcb66ea524f49e3 /ext/dma_api.h
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Add template and build environment.
Diffstat (limited to 'ext/dma_api.h')
-rw-r--r--ext/dma_api.h45
1 files changed, 45 insertions, 0 deletions
diff --git a/ext/dma_api.h b/ext/dma_api.h
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+/* mbed Microcontroller Library
+ * Copyright (c) 2014-2015 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_H
+#define MBED_DMA_API_H
+
+#include <stdint.h>
+
+#define DMA_ERROR_OUT_OF_CHANNELS (-1)
+
+typedef enum {
+ DMA_USAGE_NEVER,
+ DMA_USAGE_OPPORTUNISTIC,
+ DMA_USAGE_ALWAYS,
+ DMA_USAGE_TEMPORARY_ALLOCATED,
+ DMA_USAGE_ALLOCATED
+} DMAUsage;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void dma_init(void);
+
+int dma_channel_allocate(uint32_t capabilities);
+
+int dma_channel_free(int channelid);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif