Cortney Padua / mbed-dev

fixed drive strength

Dependents:   capstone_i2c

Fork of mbed-dev by mbed official

targets/hal/TARGET_Atmel/TARGET_SAM_CortexM0P/dma_api_HAL.h@15:a81a8d6c1dfe, 2015-11-04 (annotated)

Committer:
mbed_official
Date:
Wed Nov 04 16:30:11 2015 +0000
Revision:
15:a81a8d6c1dfe
Child:
64:41a834223ea3
Synchronized with git revision 46af745ef4405614c3fa49abbd9a706a362ea514



Full URL: https://github.com/mbedmicro/mbed/commit/46af745ef4405614c3fa49abbd9a706a362ea514/



Renamed TARGET_SAM_CortexM0+ to TARGET_SAM_CortexM0P for compatiblity with online compiler

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 15:a81a8d6c1dfe 1 /* mbed Microcontroller Library
mbed_official 15:a81a8d6c1dfe 2 * Copyright (c) 2006-2015 ARM Limited
mbed_official 15:a81a8d6c1dfe 3 *
mbed_official 15:a81a8d6c1dfe 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 15:a81a8d6c1dfe 5 * you may not use this file except in compliance with the License.
mbed_official 15:a81a8d6c1dfe 6 * You may obtain a copy of the License at
mbed_official 15:a81a8d6c1dfe 7 *
mbed_official 15:a81a8d6c1dfe 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 15:a81a8d6c1dfe 9 *
mbed_official 15:a81a8d6c1dfe 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 15:a81a8d6c1dfe 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 15:a81a8d6c1dfe 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 15:a81a8d6c1dfe 13 * See the License for the specific language governing permissions and
mbed_official 15:a81a8d6c1dfe 14 * limitations under the License.
mbed_official 15:a81a8d6c1dfe 15 */
mbed_official 15:a81a8d6c1dfe 16
mbed_official 15:a81a8d6c1dfe 17 #ifndef _DMA_API_HAL_H
mbed_official 15:a81a8d6c1dfe 18 #define _DMA_API_HAL_H
mbed_official 15:a81a8d6c1dfe 19
mbed_official 15:a81a8d6c1dfe 20 #ifdef __cplusplus
mbed_official 15:a81a8d6c1dfe 21 extern "C" {
mbed_official 15:a81a8d6c1dfe 22 #endif
mbed_official 15:a81a8d6c1dfe 23
mbed_official 15:a81a8d6c1dfe 24 #include <compiler.h>
mbed_official 15:a81a8d6c1dfe 25 #include "dma.h"
mbed_official 15:a81a8d6c1dfe 26
mbed_official 15:a81a8d6c1dfe 27 enum dma_status_flags {
mbed_official 15:a81a8d6c1dfe 28 DMA_NOT_USED = (uint32_t)1,
mbed_official 15:a81a8d6c1dfe 29 DMA_ALLOCATED = (DMA_NOT_USED << 1),
mbed_official 15:a81a8d6c1dfe 30 DMA_TEMPORARY = (DMA_NOT_USED << 2),
mbed_official 15:a81a8d6c1dfe 31 DMA_ERROR = (DMA_NOT_USED << 3),
mbed_official 15:a81a8d6c1dfe 32 };
mbed_official 15:a81a8d6c1dfe 33
mbed_official 15:a81a8d6c1dfe 34 /* No other capabilities supported now */
mbed_official 15:a81a8d6c1dfe 35 #define DMA_CAP_NONE 0
mbed_official 15:a81a8d6c1dfe 36
mbed_official 15:a81a8d6c1dfe 37 #define DMA_ADDRESS_INC_DISABLE 0
mbed_official 15:a81a8d6c1dfe 38 #define DMA_ADDRESS_INC_ENABLE 1
mbed_official 15:a81a8d6c1dfe 39
mbed_official 15:a81a8d6c1dfe 40 #define DMA_TRANSFER_ERROR ((uint32_t)1 << 1)
mbed_official 15:a81a8d6c1dfe 41 #define DMA_TRANSFER_COMPLETE ((uint32_t)1 << 2)
mbed_official 15:a81a8d6c1dfe 42
mbed_official 15:a81a8d6c1dfe 43 #define DMA_EVENT_ALL (DMA_TRANSFER_ERROR | DMA_TRANSFER_COMPLETE)
mbed_official 15:a81a8d6c1dfe 44
mbed_official 15:a81a8d6c1dfe 45
mbed_official 15:a81a8d6c1dfe 46 COMPILER_ALIGNED(16)
mbed_official 15:a81a8d6c1dfe 47 struct dma_instance_s {
mbed_official 15:a81a8d6c1dfe 48 struct dma_resource resource;
mbed_official 15:a81a8d6c1dfe 49 DmacDescriptor descriptor;
mbed_official 15:a81a8d6c1dfe 50 uint8_t status;
mbed_official 15:a81a8d6c1dfe 51 uint32_t events;
mbed_official 15:a81a8d6c1dfe 52 uint32_t handler;
mbed_official 15:a81a8d6c1dfe 53 };
mbed_official 15:a81a8d6c1dfe 54
mbed_official 15:a81a8d6c1dfe 55 /** Setup a DMA descriptor for specified resource
mbed_official 15:a81a8d6c1dfe 56 *
mbed_official 15:a81a8d6c1dfe 57 * @param[in] channel_index DMA channel id
mbed_official 15:a81a8d6c1dfe 58 * @param[in] src source address
mbed_official 15:a81a8d6c1dfe 59 * @param[in] src_inc_enable source address auto increment enable flag
mbed_official 15:a81a8d6c1dfe 60 * @param[in] desc destination address
mbed_official 15:a81a8d6c1dfe 61 * @param[in] desc_inc_enable destination address auto increment enable flag
mbed_official 15:a81a8d6c1dfe 62 * @param[in] length length of data to be transferred
mbed_official 15:a81a8d6c1dfe 63 * @param[in] beat_size beat size to be set
mbed_official 15:a81a8d6c1dfe 64 * @return void
mbed_official 15:a81a8d6c1dfe 65 */
mbed_official 15:a81a8d6c1dfe 66 void dma_setup_transfer(uint8_t channelid, uint32_t src, bool src_inc_enable, uint32_t desc, bool desc_inc_enable, uint32_t length, uint8_t beat_size);
mbed_official 15:a81a8d6c1dfe 67
mbed_official 15:a81a8d6c1dfe 68 /** Start DMA transfer
mbed_official 15:a81a8d6c1dfe 69 *
mbed_official 15:a81a8d6c1dfe 70 * Kick starts transfer in DMA channel with specified channel id
mbed_official 15:a81a8d6c1dfe 71 * @param[in] channelid Channel id of DMA channel
mbed_official 15:a81a8d6c1dfe 72 * @return non zero if success otherwise zero
mbed_official 15:a81a8d6c1dfe 73 */
mbed_official 15:a81a8d6c1dfe 74 bool dma_start_transfer(int channelid);
mbed_official 15:a81a8d6c1dfe 75
mbed_official 15:a81a8d6c1dfe 76 /** DMA channel busy check
mbed_official 15:a81a8d6c1dfe 77 *
mbed_official 15:a81a8d6c1dfe 78 * To check whether DMA channel is busy with a job or not
mbed_official 15:a81a8d6c1dfe 79 * @param[in] channelid Channel id of DMA channel
mbed_official 15:a81a8d6c1dfe 80 * @return non zero if busy otherwise zero
mbed_official 15:a81a8d6c1dfe 81 */
mbed_official 15:a81a8d6c1dfe 82 bool dma_busy(int channelid);
mbed_official 15:a81a8d6c1dfe 83
mbed_official 15:a81a8d6c1dfe 84 /** DMA channel transfer completion check
mbed_official 15:a81a8d6c1dfe 85 *
mbed_official 15:a81a8d6c1dfe 86 * To check whether DMA channel job is completed or not
mbed_official 15:a81a8d6c1dfe 87 * @param[in] channelid Channel id of DMA channel
mbed_official 15:a81a8d6c1dfe 88 * @return non zero if busy otherwise zero
mbed_official 15:a81a8d6c1dfe 89 */
mbed_official 15:a81a8d6c1dfe 90 bool dma_is_transfer_complete(int channelid);
mbed_official 15:a81a8d6c1dfe 91
mbed_official 15:a81a8d6c1dfe 92 /** Registers callback function for DMA
mbed_official 15:a81a8d6c1dfe 93 *
mbed_official 15:a81a8d6c1dfe 94 * Registers callback function for DMA for specified events
mbed_official 15:a81a8d6c1dfe 95 * @param[in] channelid Channel id of DMA channel
mbed_official 15:a81a8d6c1dfe 96 * @param[in] handler Callback function pointer
mbed_official 15:a81a8d6c1dfe 97 * @param[in] event Events mask
mbed_official 15:a81a8d6c1dfe 98 * @return void
mbed_official 15:a81a8d6c1dfe 99 */
mbed_official 15:a81a8d6c1dfe 100 void dma_set_handler(int channelid, uint32_t handler, uint32_t event);
mbed_official 15:a81a8d6c1dfe 101
mbed_official 15:a81a8d6c1dfe 102 #ifdef __cplusplus
mbed_official 15:a81a8d6c1dfe 103 }
mbed_official 15:a81a8d6c1dfe 104 #endif
mbed_official 15:a81a8d6c1dfe 105
mbed_official 15:a81a8d6c1dfe 106 #endif /* _DMA_API_HAL_H */