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comparison bsp/timer.c @ 0:75a11d740a02

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initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 09 Jun 2016 00:02:41 +0000
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-1:000000000000 0:75a11d740a02
1 /*******************************************************************************
2 TEXAS INSTRUMENTS INCORPORATED PROPRIETARY INFORMATION
3
4 Property of Texas Instruments -- For Unrestricted Internal Use Only
5 Unauthorized reproduction and/or distribution is strictly prohibited. This
6 product is protected under copyright law and trade secret law as an
7 unpublished work. Created 1987, (C) Copyright 1997 Texas Instruments. All
8 rights reserved.
9
10
11 Filename : timer.c
12
13 Description : timer.c
14
15 Project : drivers
16
17 Author : pmonteil@tif.ti.com Patrice Monteil.
18
19 Version number : 1.3
20
21 Date and time : 07/23/98 16:25:32
22 Previous delta : 07/23/98 16:25:32
23
24 SCCS file : /db/gsm_asp/db_ht96/dsp_0/gsw/rel_0/mcu_l1/release1.5/mod/emu/EMU_MCMP/eva3_drivers/source/SCCS/s.timer.c
25
26 Sccs Id (SID) : '@(#) timer.c 1.3 07/23/98 16:25:32 '
27
28
29 *****************************************************************************/
30
31 #include "../include/sys_types.h"
32
33 #include "mem.h"
34 #include "iq.h"
35 #include "timer.h"
36
37
38 /*--------------------------------------------------------------
39 * TIMER_Read()
40 *--------------------------------------------------------------
41 * Parameters : num of the register to be read
42 * Return :value of the timer register read
43 * Functionality : read one of the TIMER register
44 *--------------------------------------------------------------*/
45 SYS_UWORD16 TIMER_Read (unsigned short regNum)
46 {
47 SYS_UWORD16 timerReg;
48
49 switch (regNum) {
50 case 0:
51 timerReg = ( * (volatile SYS_UWORD16 *) TIMER_CNTL_REG) & TIMER_CNTL_MASK;
52 break;
53 case 1:
54 timerReg = *(volatile SYS_UWORD16 *) TIMER_READ_REG;
55 break;
56 case 2:
57 timerReg = ( * (volatile SYS_UWORD16 *) TIMER_MODE_REG) & TIMER_MODE_MASK;
58 break;
59 default:
60 break;
61 }
62 return(timerReg);
63 }
64 /*--------------------------------------------------------------
65 * TM_ResetTimer()
66 *--------------------------------------------------------------
67 * Parameters : timer number (1 or 2)
68 * timer value, reload yes or not, scale
69 * Return : none
70 * Functionality : Give the timewr state
71 *--------------------------------------------------------------*/
72 void TM_ResetTimer (SYS_UWORD16 timerNum, SYS_UWORD16 countValue,
73 SYS_UWORD16 autoReload, SYS_UWORD16 clockScale)
74 {
75 volatile SYS_UWORD16 *cntl;
76
77 if (timerNum == 1)
78 {
79 cntl = (volatile SYS_UWORD16 *) TIMER1_CNTL;
80
81 *cntl &= ~(START_STOP | PTV); /* stop and reset values */
82
83 (autoReload) ? (*cntl |= AR) : (*cntl &= ~AR);
84
85 *cntl |= (clockScale << 2 );
86
87 /*load the value */
88 *(volatile SYS_UWORD16 *) TIMER1_LOAD_TIM = countValue;
89
90 *cntl |= START_STOP;
91 }
92 else
93 {
94 cntl = (volatile SYS_UWORD16 *) TIMER2_CNTL;
95
96 *cntl &= ~(START_STOP | PTV); /* stop and reset values */
97
98 (autoReload) ? (*cntl |= AR) : (*cntl &= ~AR);
99
100 *cntl |= (clockScale << 2 );
101
102 /*load the value */
103 *(volatile SYS_UWORD16 *) TIMER2_LOAD_TIM = countValue;
104
105 *cntl |= START_STOP;
106 }
107 }
108
109 /*
110 * TM_StopTimer
111 *
112 * Parameters : timer number (1 or 2)
113 */
114 void TM_StopTimer (int timerNum)
115 {
116 volatile SYS_UWORD16 *cntl;
117
118 if (timerNum == 1)
119 {
120 cntl = (volatile SYS_UWORD16 *) TIMER1_CNTL;
121 }
122 else
123 {
124 cntl = (volatile SYS_UWORD16 *) TIMER2_CNTL;
125 }
126 *cntl &= ~START_STOP;
127 }
128
129 /*
130 * TM_ReadTimer
131 *
132 * Returns current timer value
133 *
134 * Parameters : timer number (1 or 2)
135 *
136 */
137 SYS_UWORD16 TM_ReadTimer (int timerNum)
138 {
139 if (timerNum == 1)
140 {
141 return (* (SYS_UWORD16 *) TIMER1_READ_TIM);
142 }
143 else
144 {
145 return (* (SYS_UWORD16 *) TIMER2_READ_TIM);
146 }
147 }
148
149
150 /*
151 * TM_StartTimer
152 *
153 * Parameters : timer number (1 or 2)
154 *
155 */
156 void TM_StartTimer (int timerNum)
157 {
158 volatile SYS_UWORD16 *cntl;
159
160 if (timerNum == 1)
161 {
162 cntl = (volatile SYS_UWORD16 *) TIMER1_CNTL;
163 }
164 else
165 {
166 cntl = (volatile SYS_UWORD16 *) TIMER2_CNTL;
167 }
168 *cntl |= START_STOP;
169 }
170
171 void TM_DisableWatchdog (void)
172 {
173 /* volatile variable needed due C to optimization */
174 volatile SYS_UWORD16 *reg = (volatile SYS_UWORD16 *) TIMER_MODE_REG;
175
176 *reg = 0xf5;
177 *reg = 0xa0;
178 }
179
180
181 /*
182 * TM_EnableWatchdog
183 *
184 */
185 void TM_EnableWatchdog(void)
186 {
187 * ((volatile SYS_UWORD16 *) TIMER_MODE_REG) = TIMER_WDOG;
188 }
189
190 /*
191 * TM_ResetWatchdog
192 *
193 * Parameter : Tick count
194 * Use a different value each time, otherwise watchdog bites
195 */
196 void TM_ResetWatchdog(SYS_UWORD16 count)
197 {
198 * ((volatile SYS_UWORD16 *) TIMER_LOAD_REG) = count;
199 }
200
201 /*
202 * TM_EnableTimer (int TimerNum)
203 *
204 * Parameter : TimerNum : timer to enable (timer1 or timer2)
205 *
206 */
207 void TM_EnableTimer (int TimerNum)
208 {
209 volatile SYS_UWORD16 *cntl;
210
211 if (TimerNum == 1)
212 {
213 cntl = (volatile SYS_UWORD16 *) TIMER1_CNTL;
214 }
215 else
216 {
217 cntl = (volatile SYS_UWORD16 *) TIMER2_CNTL;
218 }
219 *cntl |= TIMER_CLK_EN;
220 }
221
222 /*
223 * TM_DisableTimer (int TimerNum)
224 *
225 * Parameter : TimerNum : timer to enable (timer1 or timer2)
226 *
227 */
228 void TM_DisableTimer (int TimerNum)
229 {
230 volatile SYS_UWORD16 *cntl;
231
232 if (TimerNum == 1)
233 {
234 cntl = (volatile SYS_UWORD16 *) TIMER1_CNTL;
235 }
236 else
237 {
238 cntl = (volatile SYS_UWORD16 *) TIMER2_CNTL;
239 }
240 *cntl &= ~TIMER_CLK_EN;
241 }
242
243 /*--------------------------------------------------------------
244 * TIMER_ReadValue()
245 *--------------------------------------------------------------
246 * Parameters : none
247 * Return : none
248 * Functionality : Read timer value
249 *--------------------------------------------------------------*/
250
251 unsigned short TIMER_ReadValue (void)
252 {
253 return(* (SYS_UWORD16 *) TIMER_READ_REG);
254 }
255
256 /*--------------------------------------------------------------
257 * TIMER_WriteValue()
258 *--------------------------------------------------------------
259 * Parameters : none
260 * Return : none
261 * Functionality : Write timer value
262 *--------------------------------------------------------------*/
263
264 void TIMER_WriteValue (SYS_UWORD16 value)
265 {
266 * (SYS_UWORD16 *) TIMER_LOAD_REG = value; /*load the value */
267 }