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
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
|
/************************************************************************************
* arch/drivers/analog/ad5410.c
*
* Copyright (C) 2011 Li Zhuoyi. All rights reserved.
* Author: Li Zhuoyi <lzyy.cn@gmail.com>
* History: 0.1 2011-08-05 initial version
*
* This file is a part of NuttX:
*
* Copyright (C) 2010 Gregory Nutt. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS 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.
*
************************************************************************************/
#include <nuttx/config.h>
#include <stdio.h>
#include <sys/types.h>
#include <stdint.h>
#include <stdbool.h>
#include <semaphore.h>
#include <errno.h>
#include <debug.h>
#include <arch/board/board.h>
#include <nuttx/arch.h>
#include <nuttx/analog/dac.h>
#include <nuttx/spi.h>
#if defined(CONFIG_DAC_AD5410)
#define AD5410_REG_NOP 0x00
#define AD5410_REG_WR 0x01
#define AD5410_REG_RD 0x02
#define AD5410_REG_CMD 0x55
#define AD5410_REG_RST 0x56
#define AD5410_CMD_REXT (1<<13)
#define AD5410_CMD_OUTEN (1<<12)
#define AD5410_CMD_SRCLK(x) (x<<8)
#define AD5410_CMD_SRSTEP(x) (x<<5)
#define AD5410_CMD_SREN (1<<4)
#define AD5410_CMD_DCEN (1<<3)
#define AD5410_CMD_420MA 0x05
#define AD5410_CMD_020MA 0x06
#define AD5410_CMD_024MA 0x07
/****************************************************************************
* ad_private Types
****************************************************************************/
struct up_dev_s
{
int devno;
FAR struct spi_dev_s *spi; /* Cached SPI device reference */
};
/****************************************************************************
* ad_private Function Prototypes
****************************************************************************/
/* DAC methods */
static void dac_reset(FAR struct dac_dev_s *dev);
static int dac_setup(FAR struct dac_dev_s *dev);
static void dac_shutdown(FAR struct dac_dev_s *dev);
static void dac_txint(FAR struct dac_dev_s *dev, bool enable);
static int dac_send(FAR struct dac_dev_s *dev, FAR struct dac_msg_s *msg);
static int dac_ioctl(FAR struct dac_dev_s *dev, int cmd, unsigned long arg);
static int dac_interrupt(int irq, void *context);
/****************************************************************************
* ad_private Data
****************************************************************************/
static const struct dac_ops_s g_dacops =
{
.ao_reset =dac_reset,
.ao_setup = dac_setup,
.ao_shutdown = dac_shutdown,
.ao_txint = dac_txint,
.ao_send = dac_send,
.ao_ioctl = dac_ioctl,
};
static struct up_dev_s g_dacpriv;
static struct dac_dev_s g_dacdev =
{
.ad_ops = &g_dacops,
.ad_priv= &g_dacpriv,
};
/****************************************************************************
* ad_private Functions
****************************************************************************/
/* Reset the DAC device. Called early to initialize the hardware. This
* is called, before ao_setup() and on error conditions.
*/
static void dac_reset(FAR struct dac_dev_s *dev)
{
}
/* Configure the DAC. This method is called the first time that the DAC
* device is opened. This will occur when the port is first opened.
* This setup includes configuring and attaching DAC interrupts. Interrupts
* are all disabled upon return.
*/
static int dac_setup(FAR struct dac_dev_s *dev)
{
FAR struct up_dev_s *priv = (FAR struct up_dev_s *)dev->ad_priv;
FAR struct spi_dev_s *spi = priv->spi;
SPI_SELECT(spi, priv->devno, true);
SPI_SEND(spi,AD5410_REG_CMD);
SPI_SEND(spi,(AD5410_CMD_OUTEN|AD5410_CMD_420MA)>>8);
SPI_SEND(spi,AD5410_CMD_OUTEN|AD5410_CMD_420MA);
SPI_SELECT(spi, priv->devno, false);
return OK;
}
/* Disable the DAC. This method is called when the DAC device is closed.
* This method reverses the operation the setup method.
*/
static void dac_shutdown(FAR struct dac_dev_s *dev)
{
}
/* Call to enable or disable TX interrupts */
static void dac_txint(FAR struct dac_dev_s *dev, bool enable)
{
}
static int dac_send(FAR struct dac_dev_s *dev, FAR struct dac_msg_s *msg)
{
FAR struct up_dev_s *priv = (FAR struct up_dev_s *)dev->ad_priv;
FAR struct spi_dev_s *spi = priv->spi;
SPI_SELECT(spi, priv->devno, true);
SPI_SEND(spi,AD5410_REG_WR);
SPI_SEND(spi,(uint8_t)(msg->am_data>>24));
SPI_SEND(spi,(uint8_t)(msg->am_data>>16));
SPI_SELECT(spi, priv->devno, false);
dac_txdone(&g_dacdev);
return 0;
}
/* All ioctl calls will be routed through this method */
static int dac_ioctl(FAR struct dac_dev_s *dev, int cmd, unsigned long arg)
{
dbg("Fix me:Not Implemented\n");
return 0;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_ad5410cinitialize
*
* Description:
* Initialize the selected DAC port
*
* Input Parameter:
* Port number (for hardware that has mutiple DAC interfaces)
*
* Returned Value:
* Valid ad5410 device structure reference on succcess; a NULL on failure
*
****************************************************************************/
FAR struct dac_dev_s *up_ad5410initialize(FAR struct spi_dev_s *spi, unsigned int devno)
{
FAR struct up_dev_s *priv = (FAR struct up_dev_s *)g_dacdev.ad_priv;
priv->spi=spi;
priv->devno=devno;
return &g_dacdev;
}
#endif
|
