1 /* --COPYRIGHT--,BSD
2 * Copyright (c) 2017, Texas Instruments Incorporated
3 * All rights reserved.
4 *
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10 * notice, this list of conditions and the following disclaimer.
11 *
12 * * Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
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17 * its contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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31 * --/COPYRIGHT--*/
32 #include <ti/devices/msp432p4xx/driverlib/timer32.h>
33 #include <ti/devices/msp432p4xx/driverlib/interrupt.h>
34 #include <ti/devices/msp432p4xx/driverlib/debug.h>
35
Timer32_initModule(uint32_t timer,uint32_t preScaler,uint32_t resolution,uint32_t mode)36 void Timer32_initModule(uint32_t timer, uint32_t preScaler, uint32_t resolution,
37 uint32_t mode)
38 {
39 /* Setting up one shot or continuous mode */
40 if (mode == TIMER32_PERIODIC_MODE)
41 BITBAND_PERI(TIMER32_CMSIS(timer)->CONTROL, TIMER32_CONTROL_MODE_OFS)
42 = 1;
43 else if (mode == TIMER32_FREE_RUN_MODE)
44 BITBAND_PERI(TIMER32_CMSIS(timer)->CONTROL, TIMER32_CONTROL_MODE_OFS)
45 = 0;
46 else
47 ASSERT(false);
48
49 /* Setting the resolution of the timer */
50 if (resolution == TIMER32_16BIT)
51 BITBAND_PERI(TIMER32_CMSIS(timer)->CONTROL, TIMER32_CONTROL_SIZE_OFS)
52 = 0;
53 else if (resolution == TIMER32_32BIT)
54 BITBAND_PERI(TIMER32_CMSIS(timer)->CONTROL, TIMER32_CONTROL_SIZE_OFS)
55 = 1;
56 else
57 ASSERT(false);
58
59 /* Setting the PreScaler */
60 ASSERT(
61 resolution == TIMER32_PRESCALER_1
62 || resolution == TIMER32_PRESCALER_16
63 || resolution == TIMER32_PRESCALER_256);
64
65 TIMER32_CMSIS(timer)->CONTROL = TIMER32_CMSIS(timer)->CONTROL
66 & (~TIMER32_CONTROL_PRESCALE_MASK) | preScaler;
67
68 }
69
Timer32_setCount(uint32_t timer,uint32_t count)70 void Timer32_setCount(uint32_t timer, uint32_t count)
71 {
72 if (!BITBAND_PERI(TIMER32_CMSIS(timer)->CONTROL, TIMER32_CONTROL_SIZE_OFS)
73 && (count > UINT16_MAX))
74 TIMER32_CMSIS(timer)->LOAD = UINT16_MAX;
75 else
76 TIMER32_CMSIS(timer)->LOAD = count;
77 }
78
Timer32_setCountInBackground(uint32_t timer,uint32_t count)79 void Timer32_setCountInBackground(uint32_t timer, uint32_t count)
80 {
81 if (!BITBAND_PERI(TIMER32_CMSIS(timer)->CONTROL, TIMER32_CONTROL_SIZE_OFS)
82 && (count > UINT16_MAX))
83 TIMER32_CMSIS(timer)->BGLOAD = UINT16_MAX;
84 else
85 TIMER32_CMSIS(timer)->BGLOAD = count;
86 }
87
Timer32_getValue(uint32_t timer)88 uint32_t Timer32_getValue(uint32_t timer)
89 {
90 return TIMER32_CMSIS(timer)->VALUE;
91 }
92
Timer32_startTimer(uint32_t timer,bool oneShot)93 void Timer32_startTimer(uint32_t timer, bool oneShot)
94 {
95 ASSERT(timer == TIMER32_0_BASE || timer == TIMER32_1_BASE);
96
97 if (oneShot)
98 BITBAND_PERI(TIMER32_CMSIS(timer)->CONTROL, TIMER32_CONTROL_ONESHOT_OFS)
99 = 1;
100 else
101 BITBAND_PERI(TIMER32_CMSIS(timer)->CONTROL, TIMER32_CONTROL_ONESHOT_OFS)
102 = 0;
103
104 TIMER32_CMSIS(timer)->CONTROL |= TIMER32_CONTROL_ENABLE;
105 }
106
Timer32_haltTimer(uint32_t timer)107 void Timer32_haltTimer(uint32_t timer)
108 {
109 ASSERT(timer == TIMER32_0_BASE || timer == TIMER32_1_BASE);
110
111 TIMER32_CMSIS(timer)->CONTROL &= ~TIMER32_CONTROL_ENABLE;
112 }
113
Timer32_enableInterrupt(uint32_t timer)114 void Timer32_enableInterrupt(uint32_t timer)
115 {
116 TIMER32_CMSIS(timer)->CONTROL |= TIMER32_CONTROL_IE;
117 }
118
Timer32_disableInterrupt(uint32_t timer)119 void Timer32_disableInterrupt(uint32_t timer)
120 {
121 TIMER32_CMSIS(timer)->CONTROL &= ~TIMER32_CONTROL_IE;
122 }
123
Timer32_clearInterruptFlag(uint32_t timer)124 void Timer32_clearInterruptFlag(uint32_t timer)
125 {
126 TIMER32_CMSIS(timer)->INTCLR |= 0x01;
127 }
128
Timer32_getInterruptStatus(uint32_t timer)129 uint32_t Timer32_getInterruptStatus(uint32_t timer)
130 {
131 return TIMER32_CMSIS(timer)->MIS;
132 }
133
Timer32_registerInterrupt(uint32_t timerInterrupt,void (* intHandler)(void))134 void Timer32_registerInterrupt(uint32_t timerInterrupt,
135 void (*intHandler)(void))
136 {
137 Interrupt_registerInterrupt(timerInterrupt, intHandler);
138 Interrupt_enableInterrupt(timerInterrupt);
139 }
140
Timer32_unregisterInterrupt(uint32_t timerInterrupt)141 void Timer32_unregisterInterrupt(uint32_t timerInterrupt)
142 {
143 Interrupt_disableInterrupt(timerInterrupt);
144 Interrupt_unregisterInterrupt(timerInterrupt);
145 }
146
147
