1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
|
/* ---------------------------------------------------------------------------- */
/* Atmel Microcontroller Software Support */
/* SAM Software Package License */
/* ---------------------------------------------------------------------------- */
/* Copyright (c) 2015, Atmel Corporation */
/* */
/* All rights reserved. */
/* */
/* Redistribution and use in source and binary forms, with or without */
/* modification, are permitted provided that the following condition is met: */
/* */
/* - Redistributions of source code must retain the above copyright notice, */
/* this list of conditions and the disclaimer below. */
/* */
/* Atmel's name may not be used to endorse or promote products derived from */
/* this software without specific prior written permission. */
/* */
/* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR */
/* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE */
/* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, */
/* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT */
/* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, */
/* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF */
/* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING */
/* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, */
/* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
/* ---------------------------------------------------------------------------- */
/**
* \file
*
* \section Purpose
*
* Interface for configuration the Analog-to-Digital Converter (AFEC) peripheral.
*
* \section Usage
*
* -# Configurate the pins for AFEC.
* -# Initialize the AFEC with AFEC_Initialize().
* -# Set AFEC clock and timing with AFEC_SetClock() and AFEC_SetTiming().
* -# Select the active channel using AFEC_EnableChannel().
* -# Start the conversion with AFEC_StartConversion().
* -# Wait the end of the conversion by polling status with AFEC_GetStatus().
* -# Finally, get the converted data using AFEC_GetConvertedData() or
* AFEC_GetLastConvertedData().
*
*/
#ifndef _AFE_DMA_
#define _AFE_DMA_
/*----------------------------------------------------------------------------
* Headers
*----------------------------------------------------------------------------*/
#include "chip.h"
/*----------------------------------------------------------------------------
* Types
*----------------------------------------------------------------------------*/
/** AFE transfer complete callback. */
typedef void (*AfeCallback)(uint8_t, void *);
/** \brief Spi Transfer Request prepared by the application upper layer.
*
* This structure is sent to the AFE_SendCommand function to start the transfer.
* At the end of the transfer, the callback is invoked by the interrupt handler.
*/
typedef struct {
/** Pointer to the Rx data. */
uint32_t *pRxBuff;
/** Rx size in bytes. */
uint16_t RxSize;
/** Callback function invoked at the end of transfer. */
AfeCallback callback;
/** Callback arguments. */
void *pArgument;
} AfeCmd;
/** Constant structure associated with AFE port. This structure prevents
client applications to have access in the same time. */
typedef struct {
/** Pointer to AFE Hardware registers */
Afec *pAfeHw;
/** Current SpiCommand being processed */
AfeCmd *pCurrentCommand;
/** Pointer to DMA driver */
sXdmad *pXdmad;
/** AFEC Id as defined in the product datasheet */
uint8_t afeId;
/** Mutual exclusion semaphore. */
volatile int8_t semaphore;
} AfeDma;
/*------------------------------------------------------------------------------
* Definitions
*----------------------------------------------------------------------------*/
#define AFE_OK 0
#define AFE_ERROR 1
#define AFE_ERROR_LOCK 2
/*------------------------------------------------------------------------------
* Exported functions
*----------------------------------------------------------------------------*/
extern uint32_t Afe_ConfigureDma(AfeDma *pAfed ,
Afec *pAfeHw ,
uint8_t AfeId,
sXdmad *pXdmad);
extern uint32_t Afe_SendData(AfeDma *pAfed, AfeCmd *pCommand);
#endif /* #ifndef _AFE_DMA_ */
|
