Zakaria ElQotbi / mbed-src

mbed library sources for airmote

Fork of mbed-src by mbed official

targets/hal/TARGET_WIZNET/TARGET_W7500x/us_ticker.c@597:47bdd20c4d41, 2015-07-27 (annotated)

Committer:
mbed_official
Date:
Mon Jul 27 09:45:08 2015 +0100
Revision:
597:47bdd20c4d41
Parent:
576:99a3d3d9c43f
Child:
619:034e698bc035
Synchronized with git revision 9b9bab51e568581a2a896967a707d3b5aeda3f17



Full URL: https://github.com/mbedmicro/mbed/commit/9b9bab51e568581a2a896967a707d3b5aeda3f17/



Change us_ticker - one dual timer + one pwm timer

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 558:0880f51c4036 1 /* mbed Microcontroller Library
mbed_official 558:0880f51c4036 2 *******************************************************************************
mbed_official 558:0880f51c4036 3 * Copyright (c) 2015 WIZnet Co.,Ltd. All rights reserved.
mbed_official 558:0880f51c4036 4 * All rights reserved.
mbed_official 558:0880f51c4036 5 *
mbed_official 558:0880f51c4036 6 * Redistribution and use in source and binary forms, with or without
mbed_official 558:0880f51c4036 7 * modification, are permitted provided that the following conditions are met:
mbed_official 558:0880f51c4036 8 *
mbed_official 558:0880f51c4036 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 558:0880f51c4036 10 * this list of conditions and the following disclaimer.
mbed_official 558:0880f51c4036 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 558:0880f51c4036 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 558:0880f51c4036 13 * and/or other materials provided with the distribution.
mbed_official 558:0880f51c4036 14 * 3. Neither the name of ARM Limited nor the names of its contributors
mbed_official 558:0880f51c4036 15 * may be used to endorse or promote products derived from this software
mbed_official 558:0880f51c4036 16 * without specific prior written permission.
mbed_official 558:0880f51c4036 17 *
mbed_official 558:0880f51c4036 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 558:0880f51c4036 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 558:0880f51c4036 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 558:0880f51c4036 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 558:0880f51c4036 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 558:0880f51c4036 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 558:0880f51c4036 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 558:0880f51c4036 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 558:0880f51c4036 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 558:0880f51c4036 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 558:0880f51c4036 28 *******************************************************************************
mbed_official 558:0880f51c4036 29 */
mbed_official 558:0880f51c4036 30
mbed_official 558:0880f51c4036 31 #include <stddef.h>
mbed_official 558:0880f51c4036 32 #include "us_ticker_api.h"
mbed_official 558:0880f51c4036 33 #include "PeripheralNames.h"
mbed_official 558:0880f51c4036 34 #include "system_W7500x.h"
mbed_official 558:0880f51c4036 35
mbed_official 597:47bdd20c4d41 36 #define TIMER_0 DUALTIMER0_0
mbed_official 597:47bdd20c4d41 37 #define TIMER_1 PWM_CH1
mbed_official 597:47bdd20c4d41 38 #define TIMER_IRQn DUALTIMER0_IRQn
mbed_official 558:0880f51c4036 39
mbed_official 597:47bdd20c4d41 40 static PWM_TimerModeInitTypeDef TimerInitType;
mbed_official 597:47bdd20c4d41 41 static DUALTIMER_InitTypDef TimerHandler;
mbed_official 558:0880f51c4036 42
mbed_official 558:0880f51c4036 43 static int us_ticker_inited = 0;
mbed_official 558:0880f51c4036 44
mbed_official 558:0880f51c4036 45
mbed_official 558:0880f51c4036 46 #ifdef __cplusplus
mbed_official 558:0880f51c4036 47 extern "C"{
mbed_official 558:0880f51c4036 48 #endif
mbed_official 597:47bdd20c4d41 49
mbed_official 597:47bdd20c4d41 50 void DUALTIMER0_Handler(void)
mbed_official 558:0880f51c4036 51 {
mbed_official 597:47bdd20c4d41 52 if(DUALTIMER_GetIntStatus(DUALTIMER0_0))
mbed_official 558:0880f51c4036 53 {
mbed_official 597:47bdd20c4d41 54 DUALTIMER_IntClear(DUALTIMER0_0);
mbed_official 558:0880f51c4036 55 us_ticker_irq_handler();
mbed_official 558:0880f51c4036 56 }
mbed_official 558:0880f51c4036 57 }
mbed_official 558:0880f51c4036 58
mbed_official 558:0880f51c4036 59 #ifdef __cplusplus
mbed_official 558:0880f51c4036 60 }
mbed_official 558:0880f51c4036 61 #endif
mbed_official 558:0880f51c4036 62
mbed_official 558:0880f51c4036 63 void us_ticker_init(void)
mbed_official 558:0880f51c4036 64 {
mbed_official 558:0880f51c4036 65 if (us_ticker_inited) return;
mbed_official 558:0880f51c4036 66 us_ticker_inited = 1;
mbed_official 558:0880f51c4036 67
mbed_official 558:0880f51c4036 68 SystemCoreClockUpdate();
mbed_official 597:47bdd20c4d41 69 TimerInitType.PWM_CHn_PR = (GetSystemClock() / 1000000) -1;
mbed_official 597:47bdd20c4d41 70 TimerInitType.PWM_CHn_LR = 0xFFFFFFFF;
mbed_official 597:47bdd20c4d41 71 TimerInitType.PWM_CHn_PDMR = 1;
mbed_official 558:0880f51c4036 72
mbed_official 597:47bdd20c4d41 73 PWM_TimerModeInit(TIMER_1, &TimerInitType);
mbed_official 597:47bdd20c4d41 74 PWM_CHn_Start(TIMER_1);
mbed_official 558:0880f51c4036 75 }
mbed_official 558:0880f51c4036 76
mbed_official 558:0880f51c4036 77
mbed_official 558:0880f51c4036 78 uint32_t us_ticker_read()
mbed_official 558:0880f51c4036 79 {
mbed_official 558:0880f51c4036 80 if (!us_ticker_inited) us_ticker_init();
mbed_official 597:47bdd20c4d41 81 return (TIMER_1->TCR);
mbed_official 558:0880f51c4036 82 }
mbed_official 558:0880f51c4036 83
mbed_official 558:0880f51c4036 84
mbed_official 558:0880f51c4036 85 void us_ticker_set_interrupt(timestamp_t timestamp)
mbed_official 558:0880f51c4036 86 {
mbed_official 558:0880f51c4036 87 int32_t dev = 0;
mbed_official 597:47bdd20c4d41 88
mbed_official 558:0880f51c4036 89 if (!us_ticker_inited)
mbed_official 558:0880f51c4036 90 {
mbed_official 558:0880f51c4036 91 us_ticker_init();
mbed_official 558:0880f51c4036 92 }
mbed_official 558:0880f51c4036 93
mbed_official 597:47bdd20c4d41 94 dev = (int32_t)(timestamp - us_ticker_read());
mbed_official 597:47bdd20c4d41 95 dev = dev * ((GetSystemClock() / 1000000) / 16);
mbed_official 558:0880f51c4036 96
mbed_official 558:0880f51c4036 97 if(dev <= 0)
mbed_official 558:0880f51c4036 98 {
mbed_official 558:0880f51c4036 99 us_ticker_irq_handler();
mbed_official 597:47bdd20c4d41 100 return;
mbed_official 558:0880f51c4036 101 }
mbed_official 597:47bdd20c4d41 102
mbed_official 597:47bdd20c4d41 103 DUALTIMER_ClockEnable(TIMER_0);
mbed_official 597:47bdd20c4d41 104 DUALTIMER_Stop(TIMER_0);
mbed_official 597:47bdd20c4d41 105
mbed_official 597:47bdd20c4d41 106 TimerHandler.TimerControl_Mode = DUALTIMER_TimerControl_Periodic;
mbed_official 597:47bdd20c4d41 107 TimerHandler.TimerControl_OneShot = DUALTIMER_TimerControl_OneShot;
mbed_official 597:47bdd20c4d41 108 TimerHandler.TimerControl_Pre = DUALTIMER_TimerControl_Pre_16;
mbed_official 597:47bdd20c4d41 109 TimerHandler.TimerControl_Size = DUALTIMER_TimerControl_Size_32;
mbed_official 597:47bdd20c4d41 110
mbed_official 597:47bdd20c4d41 111 TimerHandler.TimerLoad = (uint32_t)dev;
mbed_official 597:47bdd20c4d41 112
mbed_official 597:47bdd20c4d41 113 DUALTIMER_Init(TIMER_0, &TimerHandler);
mbed_official 597:47bdd20c4d41 114
mbed_official 597:47bdd20c4d41 115 DUALTIMER_IntConfig(TIMER_0, ENABLE);
mbed_official 597:47bdd20c4d41 116
mbed_official 597:47bdd20c4d41 117 NVIC_EnableIRQ(TIMER_IRQn);
mbed_official 597:47bdd20c4d41 118
mbed_official 597:47bdd20c4d41 119 DUALTIMER_Start(TIMER_0);
mbed_official 597:47bdd20c4d41 120
mbed_official 558:0880f51c4036 121
mbed_official 558:0880f51c4036 122 }
mbed_official 558:0880f51c4036 123
mbed_official 558:0880f51c4036 124 void us_ticker_disable_interrupt(void)
mbed_official 558:0880f51c4036 125 {
mbed_official 597:47bdd20c4d41 126 NVIC_DisableIRQ(TIMER_IRQn);
mbed_official 597:47bdd20c4d41 127
mbed_official 597:47bdd20c4d41 128 DUALTIMER_IntConfig(TIMER_0, DISABLE);
mbed_official 558:0880f51c4036 129 }
mbed_official 558:0880f51c4036 130
mbed_official 558:0880f51c4036 131 void us_ticker_clear_interrupt(void)
mbed_official 558:0880f51c4036 132 {
mbed_official 597:47bdd20c4d41 133 DUALTIMER_IntClear(TIMER_0);
mbed_official 558:0880f51c4036 134 }