Johannes Stratmann / mbed-dev

added prescaler for 16 bit pwm in LPC1347 target

Fork of mbed-dev by mbed official

targets/cmsis/TARGET_ARM_SSG/TARGET_BEETLE/apb_dualtimer.h@147:ba84b7dc41a7, 2016-09-10 (annotated)

Committer:
JojoS
Date:
Sat Sep 10 15:32:04 2016 +0000
Revision:
147:ba84b7dc41a7
Parent:
144:ef7eb2e8f9f7 
added prescaler for 16 bit timers (solution as in LPC11xx), default prescaler 31 for max 28 ms period time

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /* mbed Microcontroller Library
<> 144:ef7eb2e8f9f7 2 * Copyright (c) 2016 ARM Limited
<> 144:ef7eb2e8f9f7 3 *
<> 144:ef7eb2e8f9f7 4 * Licensed under the Apache License, Version 2.0 (the "License");
<> 144:ef7eb2e8f9f7 5 * you may not use this file except in compliance with the License.
<> 144:ef7eb2e8f9f7 6 * You may obtain a copy of the License at
<> 144:ef7eb2e8f9f7 7 *
<> 144:ef7eb2e8f9f7 8 * http://www.apache.org/licenses/LICENSE-2.0
<> 144:ef7eb2e8f9f7 9 *
<> 144:ef7eb2e8f9f7 10 * Unless required by applicable law or agreed to in writing, software
<> 144:ef7eb2e8f9f7 11 * distributed under the License is distributed on an "AS IS" BASIS,
<> 144:ef7eb2e8f9f7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 144:ef7eb2e8f9f7 13 * See the License for the specific language governing permissions and
<> 144:ef7eb2e8f9f7 14 * limitations under the License.
<> 144:ef7eb2e8f9f7 15 */
<> 144:ef7eb2e8f9f7 16
<> 144:ef7eb2e8f9f7 17 #ifndef _APB_DUAL_TIMER_DRV_H
<> 144:ef7eb2e8f9f7 18 #define _APB_DUAL_TIMER_DRV_H
<> 144:ef7eb2e8f9f7 19
<> 144:ef7eb2e8f9f7 20 #ifdef __cplusplus
<> 144:ef7eb2e8f9f7 21 extern "C" {
<> 144:ef7eb2e8f9f7 22 #endif
<> 144:ef7eb2e8f9f7 23
<> 144:ef7eb2e8f9f7 24 /* Supported Number of Dual Timers */
<> 144:ef7eb2e8f9f7 25 #define NUM_DUALTIMERS 1
<> 144:ef7eb2e8f9f7 26 #define DUALTIMER0 0
<> 144:ef7eb2e8f9f7 27 #define SINGLETIMER1 1
<> 144:ef7eb2e8f9f7 28 #define SINGLETIMER2 2
<> 144:ef7eb2e8f9f7 29
<> 144:ef7eb2e8f9f7 30 /*
<> 144:ef7eb2e8f9f7 31 * DualTimer_Initialize(): Initializes a hardware timer
<> 144:ef7eb2e8f9f7 32 * timer: timer to be Initialized
<> 144:ef7eb2e8f9f7 33 * time_us: timer reload value in us - 0 to reload to timer max value
<> 144:ef7eb2e8f9f7 34 * time_us = tick_value / TIMER_TICK_US
<> 144:ef7eb2e8f9f7 35 */
<> 144:ef7eb2e8f9f7 36 void DualTimer_Initialize(uint32_t timer, uint32_t time_us);
<> 144:ef7eb2e8f9f7 37
<> 144:ef7eb2e8f9f7 38 /* Enable Mode */
<> 144:ef7eb2e8f9f7 39 typedef uint8_t timerenable_t;
<> 144:ef7eb2e8f9f7 40 /* Interrupt */
<> 144:ef7eb2e8f9f7 41 #define DUALTIMER_INT_MASK (0)
<> 144:ef7eb2e8f9f7 42 #define DUALTIMER_INT (1 << DUALTIMER_INT_MASK)
<> 144:ef7eb2e8f9f7 43 /* 32 bit Counter */
<> 144:ef7eb2e8f9f7 44 #define DUALTIMER_COUNT_32_MASK (1)
<> 144:ef7eb2e8f9f7 45 #define DUALTIMER_COUNT_32 (1 << DUALTIMER_COUNT_32_MASK)
<> 144:ef7eb2e8f9f7 46 /* Periodic mode */
<> 144:ef7eb2e8f9f7 47 #define DUALTIMER_PERIODIC_MASK (2)
<> 144:ef7eb2e8f9f7 48 #define DUALTIMER_PERIODIC (1 << DUALTIMER_PERIODIC_MASK)
<> 144:ef7eb2e8f9f7 49 /* OneShot mode */
<> 144:ef7eb2e8f9f7 50 #define DUALTIMER_ONESHOT_MASK (3)
<> 144:ef7eb2e8f9f7 51 #define DUALTIMER_ONESHOT (1 << DUALTIMER_ONESHOT_MASK)
<> 144:ef7eb2e8f9f7 52
<> 144:ef7eb2e8f9f7 53 /* Default reload */
<> 144:ef7eb2e8f9f7 54 #define DUALTIMER_DEFAULT_RELOAD 0xFFFFFFFF
<> 144:ef7eb2e8f9f7 55
<> 144:ef7eb2e8f9f7 56 /*
<> 144:ef7eb2e8f9f7 57 * DualTimer_Enable(): Enables a hardware timer
<> 144:ef7eb2e8f9f7 58 * timer: timer to be enabled
<> 144:ef7eb2e8f9f7 59 * mode: enable mode
<> 144:ef7eb2e8f9f7 60 */
<> 144:ef7eb2e8f9f7 61 void DualTimer_Enable(uint32_t timer, timerenable_t mode);
<> 144:ef7eb2e8f9f7 62
<> 144:ef7eb2e8f9f7 63 /*
<> 144:ef7eb2e8f9f7 64 * DualTimer_Disable(): Disables a hardware timer
<> 144:ef7eb2e8f9f7 65 * timer: timer to be disabled
<> 144:ef7eb2e8f9f7 66 * dis_timer: 0 both - 1 dual timer 1 - 2 dual timer 2
<> 144:ef7eb2e8f9f7 67 */
<> 144:ef7eb2e8f9f7 68 void DualTimer_Disable(uint32_t timer, uint32_t dis_timer);
<> 144:ef7eb2e8f9f7 69
<> 144:ef7eb2e8f9f7 70 /*
<> 144:ef7eb2e8f9f7 71 * DualTimer_isEnabled(): verifies if a timer is enabled
<> 144:ef7eb2e8f9f7 72 * timer: timer to be verified
<> 144:ef7eb2e8f9f7 73 * @return: 0 disabled - 1 enabled
<> 144:ef7eb2e8f9f7 74 */
<> 144:ef7eb2e8f9f7 75 uint32_t DualTimer_isEnabled(uint32_t timer);
<> 144:ef7eb2e8f9f7 76
<> 144:ef7eb2e8f9f7 77 /*
<> 144:ef7eb2e8f9f7 78 * DualTimer_Read_1(): provides single timer 1 VALUE
<> 144:ef7eb2e8f9f7 79 * timer: timer to be read
<> 144:ef7eb2e8f9f7 80 * @return: timer VALUE us
<> 144:ef7eb2e8f9f7 81 */
<> 144:ef7eb2e8f9f7 82 uint32_t DualTimer_Read_1(uint32_t timer);
<> 144:ef7eb2e8f9f7 83
<> 144:ef7eb2e8f9f7 84 /*
<> 144:ef7eb2e8f9f7 85 * DualTimer_Read_2(): provides single timer 2 VALUE
<> 144:ef7eb2e8f9f7 86 * timer: timer to be read
<> 144:ef7eb2e8f9f7 87 * @return: timer VALUE us
<> 144:ef7eb2e8f9f7 88 */
<> 144:ef7eb2e8f9f7 89 uint32_t DualTimer_Read_2(uint32_t timer);
<> 144:ef7eb2e8f9f7 90
<> 144:ef7eb2e8f9f7 91 /*
<> 144:ef7eb2e8f9f7 92 * DualTimer_SetInterrupt_1(): sets timer 1 Interrupt
<> 144:ef7eb2e8f9f7 93 * timer: timer on which interrupt is set
<> 144:ef7eb2e8f9f7 94 * time_us: reloading value us
<> 144:ef7eb2e8f9f7 95 * mode: enable mode
<> 144:ef7eb2e8f9f7 96 */
<> 144:ef7eb2e8f9f7 97 void DualTimer_SetInterrupt_1(uint32_t timer, uint32_t time_us,
<> 144:ef7eb2e8f9f7 98 timerenable_t mode);
<> 144:ef7eb2e8f9f7 99
<> 144:ef7eb2e8f9f7 100 /*
<> 144:ef7eb2e8f9f7 101 * DualTimer_SetInterrupt_2(): sets timer 2 Interrupt
<> 144:ef7eb2e8f9f7 102 * timer: timer on which interrupt is set
<> 144:ef7eb2e8f9f7 103 * time_us: reloading value us
<> 144:ef7eb2e8f9f7 104 * mode: enable mode
<> 144:ef7eb2e8f9f7 105 */
<> 144:ef7eb2e8f9f7 106 void DualTimer_SetInterrupt_2(uint32_t timer, uint32_t time_us,
<> 144:ef7eb2e8f9f7 107 timerenable_t mode);
<> 144:ef7eb2e8f9f7 108
<> 144:ef7eb2e8f9f7 109 /*
<> 144:ef7eb2e8f9f7 110 * DualTimer_DisableInterrupt(): disables timer interrupt
<> 144:ef7eb2e8f9f7 111 * timer: timer on which interrupt is disabled
<> 144:ef7eb2e8f9f7 112 */
<> 144:ef7eb2e8f9f7 113 void DualTimer_DisableInterrupt(uint32_t timer);
<> 144:ef7eb2e8f9f7 114
<> 144:ef7eb2e8f9f7 115 /*
<> 144:ef7eb2e8f9f7 116 * DualTimer_ClearInterrupt(): clear timer interrupt
<> 144:ef7eb2e8f9f7 117 * timer: timer on which interrupt needs to be cleared
<> 144:ef7eb2e8f9f7 118 */
<> 144:ef7eb2e8f9f7 119 void DualTimer_ClearInterrupt(uint32_t timer);
<> 144:ef7eb2e8f9f7 120
<> 144:ef7eb2e8f9f7 121 /*
<> 144:ef7eb2e8f9f7 122 * DualTimer_GetIRQn(): returns IRQn of a DualTimer
<> 144:ef7eb2e8f9f7 123 * timer: timer on which IRQn is defined - 0 if it is not defined
<> 144:ef7eb2e8f9f7 124 */
<> 144:ef7eb2e8f9f7 125 uint32_t DualTimer_GetIRQn(uint32_t timer);
<> 144:ef7eb2e8f9f7 126
<> 144:ef7eb2e8f9f7 127 /*
<> 144:ef7eb2e8f9f7 128 * DualTimer_GetIRQInfo(): provides the single timer who caused
<> 144:ef7eb2e8f9f7 129 * the interrupt.
<> 144:ef7eb2e8f9f7 130 * timer: dualtimer that triggered the IRQ
<> 144:ef7eb2e8f9f7 131 * @return: a single timer
<> 144:ef7eb2e8f9f7 132 */
<> 144:ef7eb2e8f9f7 133 uint32_t DualTimer_GetIRQInfo(uint32_t dualtimer);
<> 144:ef7eb2e8f9f7 134
<> 144:ef7eb2e8f9f7 135 /*
<> 144:ef7eb2e8f9f7 136 * DualTimer_GetTicksUS(): returns the Ticks per us
<> 144:ef7eb2e8f9f7 137 * timer: timer associated with the Ticks per us
<> 144:ef7eb2e8f9f7 138 * @return: Ticks per us - 0 if the timer is disables
<> 144:ef7eb2e8f9f7 139 */
<> 144:ef7eb2e8f9f7 140 uint32_t DualTimer_GetTicksUS(uint32_t timer);
<> 144:ef7eb2e8f9f7 141
<> 144:ef7eb2e8f9f7 142 /*
<> 144:ef7eb2e8f9f7 143 * DualTimer_GetReloadValue(): returns the load value of the selected
<> 144:ef7eb2e8f9f7 144 * singletimer.
<> 144:ef7eb2e8f9f7 145 * timer: timer associated with the Ticks per us
<> 144:ef7eb2e8f9f7 146 * singletimer: selected singletimer
<> 144:ef7eb2e8f9f7 147 * @return: reload value of the selected singletimer
<> 144:ef7eb2e8f9f7 148 */
<> 144:ef7eb2e8f9f7 149 uint32_t DualTimer_GetReloadValue(uint32_t timer, uint32_t singletimer);
<> 144:ef7eb2e8f9f7 150
<> 144:ef7eb2e8f9f7 151 #ifdef __cplusplus
<> 144:ef7eb2e8f9f7 152 }
<> 144:ef7eb2e8f9f7 153 #endif
<> 144:ef7eb2e8f9f7 154 #endif /* _APB_DUAL_TIMER_DRV_H */