RTEMS: bsps/include/grlib/gradcdac.h Source File

| RTEMS 5.4-rc2

Loading...
Searching...
No Matches
gradcdac.h
1/* ADC / DAC (GRADCDAC) interface
2 *
3 * COPYRIGHT (c) 2009.
4 * Cobham Gaisler AB.
5 *
6 * The license and distribution terms for this file may be
7 * found in the file LICENSE in this distribution or at
8 * http://www.rtems.org/license/LICENSE.
9 */
10
11#ifndef __GRADCDAC_H__
12#define __GRADCDAC_H__
13
14#ifdef __cplusplus
15extern "C" {
16#endif
17
18 struct gradcdac_regs {
19 volatile unsigned int config; /* 0x00 Configuration Register */
20 volatile unsigned int status; /* 0x04 Status Register */
21 int unused0[2];
22 volatile unsigned int adc_din; /* 0x10 ADC Data Input Register */
23 volatile unsigned int dac_dout; /* 0x14 DAC Data Output Register */
24 int unused1[2];
25 volatile unsigned int adrin; /* 0x20 Address Input Register */
26 volatile unsigned int adrout; /* 0x24 Address Output Register */
27 volatile unsigned int adrdir; /* 0x28 Address Direction Register */
28 int unused2[1];
29 volatile unsigned int data_in; /* 0x30 Data Input Register */
30 volatile unsigned int data_out; /* 0x34 Data Output Register */
31 volatile unsigned int data_dir; /* 0x38 Data Direction Register */
32};
33
34#define GRADCDAC_CFG_DACWS 0x00f80000
35#define GRADCDAC_CFG_WRPOL 0x00040000
36#define GRADCDAC_CFG_DACDW 0x00030000
37#define GRADCDAC_CFG_ADCWS 0x0000f800
38#define GRADCDAC_CFG_RCPOL 0x00000400
39#define GRADCDAC_CFG_CSMODE 0x00000300
40#define GRADCDAC_CFG_CSPOL 0x00000080
41#define GRADCDAC_CFG_RDYMODE 0x00000040
42#define GRADCDAC_CFG_RDYPOL 0x00000020
43#define GRADCDAC_CFG_TRIGPOL 0x00000010
44#define GRADCDAC_CFG_TRIGMODE 0x0000000c
45#define GRADCDAC_CFG_ADCDW 0x00000003
46
47#define GRADCDAC_CFG_DACWS_BIT 19
48#define GRADCDAC_CFG_WRPOL_BIT 18
49#define GRADCDAC_CFG_DACDW_BIT 16
50#define GRADCDAC_CFG_ADCWS_BIT 11
51#define GRADCDAC_CFG_RCPOL_BIT 10
52#define GRADCDAC_CFG_CSMODE_BIT 8
53#define GRADCDAC_CFG_CSPOL_BIT 7
54#define GRADCDAC_CFG_RDYMODE_BIT 6
55#define GRADCDAC_CFG_RDYPOL_BIT 5
56#define GRADCDAC_CFG_TRIGPOL_BIT 4
57#define GRADCDAC_CFG_TRIGMODE_BIT 2
58#define GRADCDAC_CFG_ADCDW_BIT 0
59
60#define GRADCDAC_STATUS_DACNO 0x40
61#define GRADCDAC_STATUS_DACRDY 0x20
62#define GRADCDAC_STATUS_DACON 0x10
63#define GRADCDAC_STATUS_ADCTO 0x08
64#define GRADCDAC_STATUS_ADCNO 0x04
65#define GRADCDAC_STATUS_ADCRDY 0x02
66#define GRADCDAC_STATUS_ADCON 0x01
67
68#define GRADCDAC_STATUS_DACNO_BIT 6
69#define GRADCDAC_STATUS_DACRDY_BIT 5
70#define GRADCDAC_STATUS_DACON_BIT 4
71#define GRADCDAC_STATUS_ADCTO_BIT 3
72#define GRADCDAC_STATUS_ADCNO_BIT 2
73#define GRADCDAC_STATUS_ADCRDY_BIT 1
74#define GRADCDAC_STATUS_ADCON_BIT 0
75
76#define GRADCDAC_IRQ_DAC 1
77#define GRADCDAC_IRQ_ADC 0
78
79 struct gradcdac_config {
80 unsigned char dac_ws;
81 char wr_pol;
82 unsigned char dac_dw;
83 unsigned char adc_ws;
84 char rc_pol;
85 unsigned char cs_mode;
86 char cs_pol;
87 char ready_mode;
88 char ready_pol;
89 char trigg_pol;
90 unsigned char trigg_mode;
91 unsigned char adc_dw;
92};
93
94extern void *gradcdac_open(char *devname);
95
96extern void gradcdac_set_config(void *cookie, struct gradcdac_config *cfg);
97
98extern void gradcdac_get_config(void *cookie, struct gradcdac_config *cfg);
99
100extern void gradcdac_set_cfg(void *cookie, unsigned int config);
101
102extern unsigned int gradcdac_get_cfg(void *cookie);
103
104extern unsigned int gradcdac_get_status(void *cookie);
105
106static int __inline__ gradcdac_DAC_ReqRej(unsigned int status)
107{
108 return (status & GRADCDAC_STATUS_DACNO);
109}
110
111static int __inline__ gradcdac_DAC_isCompleted(unsigned int status)
112{
113 return (status & GRADCDAC_STATUS_DACRDY);
114}
115
116static int __inline__ gradcdac_DAC_isOngoing(unsigned int status)
117{
118 return (status & GRADCDAC_STATUS_DACON);
119}
120
121static int __inline__ gradcdac_ADC_isTimeouted(unsigned int status)
122{
123 return (status & GRADCDAC_STATUS_ADCTO);
124}
125
126static int __inline__ gradcdac_ADC_ReqRej(unsigned int status)
127{
128 return (status & GRADCDAC_STATUS_ADCNO);
129}
130
131static int __inline__ gradcdac_ADC_isCompleted(unsigned int status)
132{
133 return (status & GRADCDAC_STATUS_ADCRDY);
134}
135
136static int __inline__ gradcdac_ADC_isOngoing(unsigned int status)
137{
138 return (status & GRADCDAC_STATUS_ADCON);
139}
140
141#define GRADCDAC_ISR_BOTH 3
142#define GRADCDAC_ISR_DAC 2
143#define GRADCDAC_ISR_ADC 1
144
145/* Install IRQ handler for ADC and/or DAC interrupt.
146 * The installed IRQ handler(ISR) must read the status
147 * register to clear the pending interrupt avoiding multiple
148 * entries to the ISR caused by the same IRQ.
149 *
150 * \param adc 1=ADC interrupt, 2=ADC interrupt, 3=ADC and DAC interrupt
151 * \param isr Interrupt service routine called when IRQ is fired
152 * \param arg custom argument passed to ISR when called.
153 */
154extern int gradcdac_install_irq_handler
155 (void *cookie, int adc, void (*isr)(void *cookie, void *arg), void *arg);
156
157extern void gradcdac_uninstall_irq_handler(void *cookie, int adc);
158
159/* Make the ADC circuitry initialize a analogue to digital
160 * conversion. The result can be read out by gradcdac_adc_convert_try
161 * or gradcdac_adc_convert.
162 */
163extern void gradcdac_adc_convert_start(void *cookie);
164
165/* Tries to read the conversion result. If the circuitry is busy
166 * converting the function return a non-zero value, if the conversion
167 * has successfully finished the function return zero.
168 *
169 * \param digital_value the resulting converted value is placed here
170 * \return zero = ADC conversion complete, digital_value contain current conversion result
171 * positive = ADC busy, digital_value contain previous conversion result
172 * negative = Conversion request failed.
173 */
174extern int gradcdac_adc_convert_try(void *cookie, unsigned short *digital_value);
175
176/* Waits until the ADC circuity has finished a digital to analogue
177 * conversion. The Waiting is implemented as a busy loop utilizing
178 * 100% CPU load.
179 *
180 * \return zero = Conversion ok
181 * negative = Conversion request failed.
182 */
183extern int gradcdac_adc_convert(void *cookie, unsigned short *digital_value);
184
185/* Try to make the DAC circuitry initialize a digital to analogue
186 * conversion. If the circuitry is busy by a previous conversion
187 * the function return a non-zero value, if the conversion is
188 * successfully initialized the function return zero.
189 */
190extern int gradcdac_dac_convert_try(void *cookie, unsigned short digital_value);
191
192/* Initializes a digital to analogue conversion by waiting until
193 * previous conversions is finished before procceding with the
194 * conversion. The Waiting is implemented as a busy loop utilizing
195 * 100% CPU load.
196 */
197extern void gradcdac_dac_convert(void *cookie, unsigned short digital_value);
198
199extern unsigned int gradcdac_get_adrinput(void *cookie);
200extern void gradcdac_set_adrinput(void *cookie, unsigned int input);
201
202extern unsigned int gradcdac_get_adroutput(void *cookie);
203extern void gradcdac_set_adroutput(void *cookie, unsigned int output);
204
205extern unsigned int gradcdac_get_adrdir(void *cookie);
206extern void gradcdac_set_adrdir(void *cookie, unsigned int dir);
207
208extern unsigned int gradcdac_get_datainput(void *cookie);
209extern void gradcdac_set_datainput(void *cookie, unsigned int input);
210
211extern unsigned int gradcdac_get_dataoutput(void *cookie);
212extern void gradcdac_set_dataoutput(void *cookie, unsigned int output);
213
214extern unsigned int gradcdac_get_datadir(void *cookie);
215extern void gradcdac_set_datadir(void *cookie, unsigned int dir);
216
217/* Show one or all GRADCDAC cores. If cookie is NULL all GRADCDAC's are shown */
218extern void grAdcDacShow(void *cookie);
219
220/* Register Driver routine */
221extern void gradcdac_register_drv (void);
222
223#ifdef __cplusplus
224}
225#endif
226
227#endif
config_s
Definition: deflate.c:115
gradcdac_config
Definition: gradcdac.h:79
gradcdac_regs
Definition: gradcdac.h:18