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_timer.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_TIMER_DRV_H
<> 144:ef7eb2e8f9f7 18 #define _APB_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 Timers */
<> 144:ef7eb2e8f9f7 25 #define NUM_TIMERS 2
<> 144:ef7eb2e8f9f7 26 #define TIMER0 0
<> 144:ef7eb2e8f9f7 27 #define TIMER1 1
<> 144:ef7eb2e8f9f7 28
<> 144:ef7eb2e8f9f7 29 /* Default reload */
<> 144:ef7eb2e8f9f7 30 #define TIMER_DEFAULT_RELOAD 0xFFFFFFFF
<> 144:ef7eb2e8f9f7 31
<> 144:ef7eb2e8f9f7 32 /*
<> 144:ef7eb2e8f9f7 33 * Timer_Initialize(): Initializes an hardware timer
<> 144:ef7eb2e8f9f7 34 * timer: timer to be Initialized
<> 144:ef7eb2e8f9f7 35 * time_us: timer reload value in us - 0 to reload to timer max value
<> 144:ef7eb2e8f9f7 36 * time_us = tick_value / TIMER_TICK_US
<> 144:ef7eb2e8f9f7 37 */
<> 144:ef7eb2e8f9f7 38 void Timer_Initialize(uint32_t timer, uint32_t time_us);
<> 144:ef7eb2e8f9f7 39
<> 144:ef7eb2e8f9f7 40 /*
<> 144:ef7eb2e8f9f7 41 * Timer_Enable(): Enables an hardware timer
<> 144:ef7eb2e8f9f7 42 * timer: timer to be enabled
<> 144:ef7eb2e8f9f7 43 */
<> 144:ef7eb2e8f9f7 44 void Timer_Enable(uint32_t timer);
<> 144:ef7eb2e8f9f7 45
<> 144:ef7eb2e8f9f7 46 /*
<> 144:ef7eb2e8f9f7 47 * Timer_Disable(): Disables an hardware timer
<> 144:ef7eb2e8f9f7 48 * timer: timer to be disabled
<> 144:ef7eb2e8f9f7 49 */
<> 144:ef7eb2e8f9f7 50 void Timer_Disable(uint32_t timer);
<> 144:ef7eb2e8f9f7 51
<> 144:ef7eb2e8f9f7 52 /*
<> 144:ef7eb2e8f9f7 53 * Timer_isEnabled(): verifies if a timer is enabled
<> 144:ef7eb2e8f9f7 54 * timer: timer to be verified
<> 144:ef7eb2e8f9f7 55 * @return: 0 disabled - 1 enabled
<> 144:ef7eb2e8f9f7 56 */
<> 144:ef7eb2e8f9f7 57 uint32_t Timer_isEnabled(uint32_t timer);
<> 144:ef7eb2e8f9f7 58
<> 144:ef7eb2e8f9f7 59 /*
<> 144:ef7eb2e8f9f7 60 * Timer_Read(): provides timer VALUE
<> 144:ef7eb2e8f9f7 61 * timer: timer to be read
<> 144:ef7eb2e8f9f7 62 * @return: timer VALUE
<> 144:ef7eb2e8f9f7 63 */
<> 144:ef7eb2e8f9f7 64 uint32_t Timer_Read(uint32_t timer);
<> 144:ef7eb2e8f9f7 65
<> 144:ef7eb2e8f9f7 66 /*
<> 144:ef7eb2e8f9f7 67 * Timer_SetInterrupt(): sets timer Interrupt
<> 144:ef7eb2e8f9f7 68 * timer: timer on which interrupt is set
<> 144:ef7eb2e8f9f7 69 * time_us: reloading time in us
<> 144:ef7eb2e8f9f7 70 */
<> 144:ef7eb2e8f9f7 71 void Timer_SetInterrupt(uint32_t timer, uint32_t time_us);
<> 144:ef7eb2e8f9f7 72
<> 144:ef7eb2e8f9f7 73 /*
<> 144:ef7eb2e8f9f7 74 * Timer_DisableInterrupt(): disables timer interrupt
<> 144:ef7eb2e8f9f7 75 * timer: timer on which interrupt is disabled
<> 144:ef7eb2e8f9f7 76 */
<> 144:ef7eb2e8f9f7 77 void Timer_DisableInterrupt(uint32_t timer);
<> 144:ef7eb2e8f9f7 78
<> 144:ef7eb2e8f9f7 79 /*
<> 144:ef7eb2e8f9f7 80 * Timer_ClearInterrupt(): clear timer interrupt
<> 144:ef7eb2e8f9f7 81 * timer: timer on which interrupt needs to be cleared
<> 144:ef7eb2e8f9f7 82 */
<> 144:ef7eb2e8f9f7 83 void Timer_ClearInterrupt(uint32_t timer);
<> 144:ef7eb2e8f9f7 84
<> 144:ef7eb2e8f9f7 85 /*
<> 144:ef7eb2e8f9f7 86 * Timer_GetIRQn(): returns IRQn of a Timer
<> 144:ef7eb2e8f9f7 87 * timer: timer on which IRQn is defined - 0 if it is not defined
<> 144:ef7eb2e8f9f7 88 */
<> 144:ef7eb2e8f9f7 89 uint32_t Timer_GetIRQn(uint32_t timer);
<> 144:ef7eb2e8f9f7 90
<> 144:ef7eb2e8f9f7 91 /*
<> 144:ef7eb2e8f9f7 92 * Timer_GetTicksUS(): returns the number of Ticks per us
<> 144:ef7eb2e8f9f7 93 * timer: timer associated with the Ticks per us
<> 144:ef7eb2e8f9f7 94 * @return: Ticks per us - 0 if the timer is disables
<> 144:ef7eb2e8f9f7 95 */
<> 144:ef7eb2e8f9f7 96 uint32_t Timer_GetTicksUS(uint32_t timer);
<> 144:ef7eb2e8f9f7 97
<> 144:ef7eb2e8f9f7 98 /*
<> 144:ef7eb2e8f9f7 99 * Timer_GetReloadValue(): returns the load value of the selected
<> 144:ef7eb2e8f9f7 100 * timer.
<> 144:ef7eb2e8f9f7 101 * timer: timer associated with the Ticks per us
<> 144:ef7eb2e8f9f7 102 * @return: reload value of the selected singletimer
<> 144:ef7eb2e8f9f7 103 */
<> 144:ef7eb2e8f9f7 104 uint32_t Timer_GetReloadValue(uint32_t timer);
<> 144:ef7eb2e8f9f7 105
<> 144:ef7eb2e8f9f7 106 #ifdef __cplusplus
<> 144:ef7eb2e8f9f7 107 }
<> 144:ef7eb2e8f9f7 108 #endif
<> 144:ef7eb2e8f9f7 109 #endif /* _APB_TIMER_DRV_H */