Johannes Stratmann / mbed-dev

added prescaler for 16 bit pwm in LPC1347 target

Fork of mbed-dev by mbed official

targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/dma_api_HAL.h@147:ba84b7dc41a7, 2016-09-10 (annotated)

Committer:
JojoS
Date:
Sat Sep 10 15:32:04 2016 +0000
Revision:
147:ba84b7dc41a7
Parent:
144:ef7eb2e8f9f7 
added prescaler for 16 bit timers (solution as in LPC11xx), default prescaler 31 for max 28 ms period time

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /***************************************************************************//**
<> 144:ef7eb2e8f9f7 2 * @file dma_api_HAL.h
<> 144:ef7eb2e8f9f7 3 *******************************************************************************
<> 144:ef7eb2e8f9f7 4 * @section License
<> 144:ef7eb2e8f9f7 5 * <b>(C) Copyright 2015 Silicon Labs, http://www.silabs.com</b>
<> 144:ef7eb2e8f9f7 6 *******************************************************************************
<> 144:ef7eb2e8f9f7 7 *
<> 144:ef7eb2e8f9f7 8 * SPDX-License-Identifier: Apache-2.0
<> 144:ef7eb2e8f9f7 9 *
<> 144:ef7eb2e8f9f7 10 * Licensed under the Apache License, Version 2.0 (the "License"); you may
<> 144:ef7eb2e8f9f7 11 * not use this file except in compliance with the License.
<> 144:ef7eb2e8f9f7 12 * You may obtain a copy of the License at
<> 144:ef7eb2e8f9f7 13 *
<> 144:ef7eb2e8f9f7 14 * http://www.apache.org/licenses/LICENSE-2.0
<> 144:ef7eb2e8f9f7 15 *
<> 144:ef7eb2e8f9f7 16 * Unless required by applicable law or agreed to in writing, software
<> 144:ef7eb2e8f9f7 17 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
<> 144:ef7eb2e8f9f7 18 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 144:ef7eb2e8f9f7 19 * See the License for the specific language governing permissions and
<> 144:ef7eb2e8f9f7 20 * limitations under the License.
<> 144:ef7eb2e8f9f7 21 *
<> 144:ef7eb2e8f9f7 22 ******************************************************************************/
<> 144:ef7eb2e8f9f7 23
<> 144:ef7eb2e8f9f7 24 #ifndef MBED_DMA_API_HAL_H
<> 144:ef7eb2e8f9f7 25 #define MBED_DMA_API_HAL_H
<> 144:ef7eb2e8f9f7 26
<> 144:ef7eb2e8f9f7 27 #include <stdint.h>
<> 144:ef7eb2e8f9f7 28 #include "dma_api.h"
<> 144:ef7eb2e8f9f7 29 #include "em_device.h"
<> 144:ef7eb2e8f9f7 30
<> 144:ef7eb2e8f9f7 31 #ifdef DMA_PRESENT
<> 144:ef7eb2e8f9f7 32 #include "em_dma.h"
<> 144:ef7eb2e8f9f7 33 #endif
<> 144:ef7eb2e8f9f7 34
<> 144:ef7eb2e8f9f7 35 #ifdef LDMA_PRESENT
<> 144:ef7eb2e8f9f7 36 #include "em_ldma.h"
<> 144:ef7eb2e8f9f7 37 #endif
<> 144:ef7eb2e8f9f7 38
<> 144:ef7eb2e8f9f7 39 #ifdef __cplusplus
<> 144:ef7eb2e8f9f7 40 extern "C" {
<> 144:ef7eb2e8f9f7 41 #endif
<> 144:ef7eb2e8f9f7 42
<> 144:ef7eb2e8f9f7 43 /* Purpose of this file: extend dma_api.h to include EFM-specific DMA attributes */
<> 144:ef7eb2e8f9f7 44
<> 144:ef7eb2e8f9f7 45 #define DMA_CAP_2DCOPY (1 << 0)
<> 144:ef7eb2e8f9f7 46 #define DMA_CAP_NONE (0 << 0)
<> 144:ef7eb2e8f9f7 47
<> 144:ef7eb2e8f9f7 48 #if ( DMA_CHAN_COUNT <= 4 )
<> 144:ef7eb2e8f9f7 49 #define DMACTRL_CH_CNT 4
<> 144:ef7eb2e8f9f7 50 #define DMACTRL_ALIGNMENT 256
<> 144:ef7eb2e8f9f7 51
<> 144:ef7eb2e8f9f7 52 #elif ( ( DMA_CHAN_COUNT > 4 ) && ( DMA_CHAN_COUNT <= 8 ) )
<> 144:ef7eb2e8f9f7 53 #define DMACTRL_CH_CNT 8
<> 144:ef7eb2e8f9f7 54 #define DMACTRL_ALIGNMENT 256
<> 144:ef7eb2e8f9f7 55
<> 144:ef7eb2e8f9f7 56 #elif ( ( DMA_CHAN_COUNT > 8 ) && ( DMA_CHAN_COUNT <= 16 ) )
<> 144:ef7eb2e8f9f7 57 #define DMACTRL_CH_CNT 16
<> 144:ef7eb2e8f9f7 58 #define DMACTRL_ALIGNMENT 512
<> 144:ef7eb2e8f9f7 59
<> 144:ef7eb2e8f9f7 60 #else
<> 144:ef7eb2e8f9f7 61 #error "Unsupported DMA channel count (dma_api.c)."
<> 144:ef7eb2e8f9f7 62 #endif
<> 144:ef7eb2e8f9f7 63
<> 144:ef7eb2e8f9f7 64 #ifdef LDMA_PRESENT
<> 144:ef7eb2e8f9f7 65 typedef void (*LDMAx_CBFunc_t)(unsigned int channel, bool primary, void *user);
<> 144:ef7eb2e8f9f7 66
<> 144:ef7eb2e8f9f7 67 typedef struct
<> 144:ef7eb2e8f9f7 68 {
<> 144:ef7eb2e8f9f7 69 LDMAx_CBFunc_t cbFunc;
<> 144:ef7eb2e8f9f7 70 void *userPtr;
<> 144:ef7eb2e8f9f7 71 } LDMAx_Callback_t;
<> 144:ef7eb2e8f9f7 72
<> 144:ef7eb2e8f9f7 73 void LDMAx_StartTransfer( int ch,
<> 144:ef7eb2e8f9f7 74 LDMA_TransferCfg_t *transfer,
<> 144:ef7eb2e8f9f7 75 LDMA_Descriptor_t *descriptor,
<> 144:ef7eb2e8f9f7 76 LDMAx_CBFunc_t cbFunc,
<> 144:ef7eb2e8f9f7 77 void *userData );
<> 144:ef7eb2e8f9f7 78 bool LDMAx_ChannelEnabled( int ch );
<> 144:ef7eb2e8f9f7 79 #endif
<> 144:ef7eb2e8f9f7 80
<> 144:ef7eb2e8f9f7 81 typedef struct {
<> 144:ef7eb2e8f9f7 82 DMAUsage dmaUsageState;
<> 144:ef7eb2e8f9f7 83 int dmaChannel;
<> 144:ef7eb2e8f9f7 84 #ifndef LDMA_PRESENT
<> 144:ef7eb2e8f9f7 85 DMA_CB_TypeDef dmaCallback;
<> 144:ef7eb2e8f9f7 86 #else
<> 144:ef7eb2e8f9f7 87 LDMAx_Callback_t dmaCallback;
<> 144:ef7eb2e8f9f7 88 #endif
<> 144:ef7eb2e8f9f7 89 } DMA_OPTIONS_t;
<> 144:ef7eb2e8f9f7 90
<> 144:ef7eb2e8f9f7 91 typedef void (*DMACallback)(void);
<> 144:ef7eb2e8f9f7 92
<> 144:ef7eb2e8f9f7 93 extern DMA_DESCRIPTOR_TypeDef dmaControlBlock[];
<> 144:ef7eb2e8f9f7 94
<> 144:ef7eb2e8f9f7 95 #ifdef __cplusplus
<> 144:ef7eb2e8f9f7 96 }
<> 144:ef7eb2e8f9f7 97 #endif
<> 144:ef7eb2e8f9f7 98
<> 144:ef7eb2e8f9f7 99 #endif