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dac_001.c
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1 /*
2 * @brief DAC Registers and control functions
3 *
4 * @note
5 * Copyright(C) NXP Semiconductors, 2012
6 * All rights reserved.
7 *
8 * @par
9 * Software that is described herein is for illustrative purposes only
10 * which provides customers with programming information regarding the
11 * LPC products. This software is supplied "AS IS" without any warranties of
12 * any kind, and NXP Semiconductors and its licensor disclaim any and
13 * all warranties, express or implied, including all implied warranties of
14 * merchantability, fitness for a particular purpose and non-infringement of
15 * intellectual property rights. NXP Semiconductors assumes no responsibility
16 * or liability for the use of the software, conveys no license or rights under any
17 * patent, copyright, mask work right, or any other intellectual property rights in
18 * or to any products. NXP Semiconductors reserves the right to make changes
19 * in the software without notification. NXP Semiconductors also makes no
20 * representation or warranty that such application will be suitable for the
21 * specified use without further testing or modification.
22 *
23 * @par
24 * Permission to use, copy, modify, and distribute this software and its
25 * documentation is hereby granted, under NXP Semiconductors' and its
26 * licensor's relevant copyrights in the software, without fee, provided that it
27 * is used in conjunction with NXP Semiconductors microcontrollers. This
28 * copyright, permission, and disclaimer notice must appear in all copies of
29 * this code.
30 */
31
32 #include "dac_001.h"
33
34 /*****************************************************************************
35 * Private types/enumerations/variables
36 ****************************************************************************/
37
38 /*****************************************************************************
39 * Public types/enumerations/variables
40 ****************************************************************************/
41
42 /*****************************************************************************
43 * Private functions
44 ****************************************************************************/
45
46 /*****************************************************************************
47 * Public functions
48 ****************************************************************************/
49
50 /* Initial DAC configuration. Maximum update rate is 1MHz; value to AOUT is 0 */
51 void IP_DAC_Init(IP_DAC_001_T *pDAC)
52 {
53 /* Set maximum update rate 1MHz */
54 IP_DAC_SetBias(pDAC, DAC_MAX_UPDATE_RATE_1MHz);
55 }
56
57 /* Update value to DAC buffer*/
58 void IP_DAC_UpdateValue(IP_DAC_001_T *pDAC, uint32_t dac_value)
59 {
60 uint32_t tmp;
61
62 tmp = pDAC->CR & DAC_BIAS_EN;
63 tmp |= DAC_VALUE(dac_value);
64 /* Update value */
65 pDAC->CR = tmp;
66 }
67
68 /* Set Maximum update rate for DAC */
69 void IP_DAC_SetBias(IP_DAC_001_T *pDAC, uint32_t bias)
70 {
71 pDAC->CR &= ~DAC_BIAS_EN;
72
73 if (bias == DAC_MAX_UPDATE_RATE_400kHz) {
74 pDAC->CR |= DAC_BIAS_EN;
75 }
76 }
77
78 /* Set reload value for interrupt/DMA counter */
79 void IP_DAC_SetDMATimeOut(IP_DAC_001_T *pDAC, uint32_t time_out)
80 {
81 pDAC->CNTVAL = DAC_CCNT_VALUE(time_out);
82 }
83
84 /* Get status for interrupt/DMA time out */
85 IntStatus IP_DAC_GetIntStatus(IP_DAC_001_T *pDAC)
86 {
87 if (pDAC->CTRL & 0x01) {
88 return SET;
89 }
90
91 return RESET;
92 }