Naze32 clone with Frysky receiver
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dma_api.h 1.1KB

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  1. /* mbed Microcontroller Library
  2. * Copyright (c) 2014-2015 ARM Limited
  3. *
  4. * Licensed under the Apache License, Version 2.0 (the "License");
  5. * you may not use this file except in compliance with the License.
  6. * You may obtain a copy of the License at
  7. *
  8. * http://www.apache.org/licenses/LICENSE-2.0
  9. *
  10. * Unless required by applicable law or agreed to in writing, software
  11. * distributed under the License is distributed on an "AS IS" BASIS,
  12. * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13. * See the License for the specific language governing permissions and
  14. * limitations under the License.
  15. */
  16. #ifndef MBED_DMA_API_H
  17. #define MBED_DMA_API_H
  18. #include <stdint.h>
  19. #define DMA_ERROR_OUT_OF_CHANNELS (-1)
  20. typedef enum {
  21. DMA_USAGE_NEVER,
  22. DMA_USAGE_OPPORTUNISTIC,
  23. DMA_USAGE_ALWAYS,
  24. DMA_USAGE_TEMPORARY_ALLOCATED,
  25. DMA_USAGE_ALLOCATED
  26. } DMAUsage;
  27. #ifdef __cplusplus
  28. extern "C" {
  29. #endif
  30. void dma_init(void);
  31. int dma_channel_allocate(uint32_t capabilities);
  32. int dma_channel_free(int channelid);
  33. #ifdef __cplusplus
  34. }
  35. #endif
  36. #endif