Paul Paterson / mbed-src-CanNucleoF0

mbed library sources, include can_api for nucleo-f091rc

Dependents:   CanNucleoF0_example

Fork of mbed-src by mbed official

targets/hal/TARGET_WIZNET/TARGET_W7500x/gpio_irq_api.c@645:13c87cbecd54, 2016-01-07 (annotated)

Committer:
ptpaterson
Date:
Thu Jan 07 05:49:05 2016 +0000
Revision:
645:13c87cbecd54
Parent:
619:034e698bc035 
corrected freeze on CAN_RECEIVE_IT

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 567:a97fd0eca828 1 /* mbed Microcontroller Library
mbed_official 567:a97fd0eca828 2 *******************************************************************************
mbed_official 567:a97fd0eca828 3 * Copyright (c) 2015 WIZnet Co.,Ltd. All rights reserved.
mbed_official 567:a97fd0eca828 4 * All rights reserved.
mbed_official 567:a97fd0eca828 5 *
mbed_official 567:a97fd0eca828 6 * Redistribution and use in source and binary forms, with or without
mbed_official 567:a97fd0eca828 7 * modification, are permitted provided that the following conditions are met:
mbed_official 567:a97fd0eca828 8 *
mbed_official 567:a97fd0eca828 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 567:a97fd0eca828 10 * this list of conditions and the following disclaimer.
mbed_official 567:a97fd0eca828 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 567:a97fd0eca828 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 567:a97fd0eca828 13 * and/or other materials provided with the distribution.
mbed_official 567:a97fd0eca828 14 * 3. Neither the name of ARM Limited nor the names of its contributors
mbed_official 567:a97fd0eca828 15 * may be used to endorse or promote products derived from this software
mbed_official 567:a97fd0eca828 16 * without specific prior written permission.
mbed_official 567:a97fd0eca828 17 *
mbed_official 567:a97fd0eca828 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 567:a97fd0eca828 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 567:a97fd0eca828 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 567:a97fd0eca828 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 567:a97fd0eca828 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 567:a97fd0eca828 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 567:a97fd0eca828 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 567:a97fd0eca828 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 567:a97fd0eca828 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 567:a97fd0eca828 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 567:a97fd0eca828 28 *******************************************************************************
mbed_official 567:a97fd0eca828 29 */
mbed_official 567:a97fd0eca828 30
mbed_official 567:a97fd0eca828 31 #include <stddef.h>
mbed_official 567:a97fd0eca828 32 #include "cmsis.h"
mbed_official 567:a97fd0eca828 33 #include "gpio_irq_api.h"
mbed_official 567:a97fd0eca828 34 #include "pinmap.h"
mbed_official 567:a97fd0eca828 35 #include "mbed_error.h"
mbed_official 567:a97fd0eca828 36
mbed_official 567:a97fd0eca828 37 #define EDGE_NONE (0)
mbed_official 567:a97fd0eca828 38 #define EDGE_RISE (1)
mbed_official 567:a97fd0eca828 39 #define EDGE_FALL (2)
mbed_official 567:a97fd0eca828 40 #define EDGE_BOTH (3)
mbed_official 567:a97fd0eca828 41
mbed_official 567:a97fd0eca828 42 static gpio_irq_handler irq_handler;
mbed_official 567:a97fd0eca828 43
mbed_official 567:a97fd0eca828 44 static uint32_t channel_ids[4][16];
mbed_official 567:a97fd0eca828 45
mbed_official 567:a97fd0eca828 46 #ifdef __cplusplus
mbed_official 567:a97fd0eca828 47 extern "C"{
mbed_official 567:a97fd0eca828 48 #endif
mbed_official 619:034e698bc035 49 void port_generic_handler(GPIO_TypeDef* GPIOx, uint32_t port_num);
mbed_official 567:a97fd0eca828 50
mbed_official 567:a97fd0eca828 51 void PORT0_Handler(void)
mbed_official 567:a97fd0eca828 52 {
mbed_official 567:a97fd0eca828 53 port_generic_handler(GPIOA, 0);
mbed_official 567:a97fd0eca828 54 }
mbed_official 567:a97fd0eca828 55
mbed_official 567:a97fd0eca828 56 void PORT1_Handler(void)
mbed_official 567:a97fd0eca828 57 {
mbed_official 567:a97fd0eca828 58 port_generic_handler(GPIOB, 1);
mbed_official 567:a97fd0eca828 59 }
mbed_official 567:a97fd0eca828 60
mbed_official 567:a97fd0eca828 61 void PORT2_Handler(void)
mbed_official 567:a97fd0eca828 62 {
mbed_official 567:a97fd0eca828 63 port_generic_handler(GPIOC, 2);
mbed_official 567:a97fd0eca828 64 }
mbed_official 567:a97fd0eca828 65
mbed_official 567:a97fd0eca828 66 void PORT3_Handler(void)
mbed_official 567:a97fd0eca828 67 {
mbed_official 567:a97fd0eca828 68 port_generic_handler(GPIOD, 3);
mbed_official 567:a97fd0eca828 69 }
mbed_official 567:a97fd0eca828 70
mbed_official 567:a97fd0eca828 71 void port_generic_handler(GPIO_TypeDef* GPIOx, uint32_t port_num)
mbed_official 567:a97fd0eca828 72 {
mbed_official 567:a97fd0eca828 73 int i = 0;
mbed_official 567:a97fd0eca828 74 int loop = 16;
mbed_official 567:a97fd0eca828 75
mbed_official 567:a97fd0eca828 76 if(GPIOx == GPIOD) loop = 5;
mbed_official 567:a97fd0eca828 77
mbed_official 567:a97fd0eca828 78 for(i=0; i<loop; i++)
mbed_official 567:a97fd0eca828 79 {
mbed_official 567:a97fd0eca828 80 if(GPIOx->Interrupt.INTSTATUS & (1 << i))
mbed_official 567:a97fd0eca828 81 {
mbed_official 567:a97fd0eca828 82 GPIOx->Interrupt.INTCLEAR |= (1 << i);
mbed_official 567:a97fd0eca828 83 if(GPIOx->INTPOLSET >> i) //rising
mbed_official 567:a97fd0eca828 84 irq_handler(channel_ids[port_num][i], IRQ_RISE);
mbed_official 567:a97fd0eca828 85 else //falling
mbed_official 567:a97fd0eca828 86 irq_handler(channel_ids[port_num][i], IRQ_FALL);
mbed_official 567:a97fd0eca828 87 }
mbed_official 567:a97fd0eca828 88 }
mbed_official 567:a97fd0eca828 89 }
mbed_official 567:a97fd0eca828 90
mbed_official 567:a97fd0eca828 91 #ifdef __cplusplus
mbed_official 567:a97fd0eca828 92 }
mbed_official 567:a97fd0eca828 93 #endif
mbed_official 567:a97fd0eca828 94
mbed_official 567:a97fd0eca828 95
mbed_official 567:a97fd0eca828 96 int gpio_irq_init(gpio_irq_t *obj, PinName pin, gpio_irq_handler handler, uint32_t id)
mbed_official 567:a97fd0eca828 97 {
mbed_official 567:a97fd0eca828 98 obj->port_num = WIZ_PORT(pin);
mbed_official 567:a97fd0eca828 99 obj->pin_num = WIZ_PIN_NUM(pin);
mbed_official 567:a97fd0eca828 100 obj->pin_index = WIZ_PIN_INDEX(pin);
mbed_official 567:a97fd0eca828 101
mbed_official 567:a97fd0eca828 102 if (pin == NC) return -1;
mbed_official 567:a97fd0eca828 103
mbed_official 567:a97fd0eca828 104 if(obj->port_num == 0)
mbed_official 567:a97fd0eca828 105 obj->irq_n = PORT0_IRQn;
mbed_official 567:a97fd0eca828 106 else if(obj->port_num == 1)
mbed_official 567:a97fd0eca828 107 obj->irq_n = PORT1_IRQn;
mbed_official 567:a97fd0eca828 108 else if(obj->port_num == 2)
mbed_official 567:a97fd0eca828 109 obj->irq_n = PORT2_IRQn;
mbed_official 567:a97fd0eca828 110 else
mbed_official 567:a97fd0eca828 111 obj->irq_n = PORT3_IRQn;
mbed_official 567:a97fd0eca828 112
mbed_official 567:a97fd0eca828 113 //obj->event = EDGE_FALL;
mbed_official 567:a97fd0eca828 114 obj->pin = pin;
mbed_official 567:a97fd0eca828 115
mbed_official 567:a97fd0eca828 116 // Enable EXTI interrupt
mbed_official 567:a97fd0eca828 117 NVIC_EnableIRQ(obj->irq_n);
mbed_official 567:a97fd0eca828 118
mbed_official 567:a97fd0eca828 119 channel_ids[obj->port_num][obj->pin_num] = id;
mbed_official 567:a97fd0eca828 120
mbed_official 567:a97fd0eca828 121 irq_handler = handler;
mbed_official 567:a97fd0eca828 122
mbed_official 567:a97fd0eca828 123 return 0;
mbed_official 567:a97fd0eca828 124 }
mbed_official 567:a97fd0eca828 125
mbed_official 567:a97fd0eca828 126 void gpio_irq_free(gpio_irq_t *obj)
mbed_official 567:a97fd0eca828 127 {
mbed_official 567:a97fd0eca828 128 channel_ids[obj->port_num][obj->pin_num] = 0;
mbed_official 567:a97fd0eca828 129
mbed_official 567:a97fd0eca828 130 obj->event = EDGE_NONE;
mbed_official 567:a97fd0eca828 131 }
mbed_official 567:a97fd0eca828 132
mbed_official 567:a97fd0eca828 133 void gpio_irq_set(gpio_irq_t *obj, gpio_irq_event event, uint32_t enable)
mbed_official 567:a97fd0eca828 134 {
mbed_official 567:a97fd0eca828 135 GPIO_TypeDef *gpio = (GPIO_TypeDef *)Get_GPIO_BaseAddress(obj->port_num);
mbed_official 567:a97fd0eca828 136
mbed_official 567:a97fd0eca828 137 if (enable) {
mbed_official 567:a97fd0eca828 138 if (event == IRQ_RISE) {
mbed_official 567:a97fd0eca828 139 gpio->INTPOLSET |= obj->pin_index;
mbed_official 567:a97fd0eca828 140 obj->event = EDGE_RISE;
mbed_official 567:a97fd0eca828 141 obj->rise_null = 0;
mbed_official 567:a97fd0eca828 142 }
mbed_official 567:a97fd0eca828 143 else if (event == IRQ_FALL) {
mbed_official 567:a97fd0eca828 144 gpio->INTPOLSET &= ~obj->pin_index;
mbed_official 567:a97fd0eca828 145 obj->event = EDGE_FALL;
mbed_official 567:a97fd0eca828 146 obj->fall_null = 0;
mbed_official 567:a97fd0eca828 147 }
mbed_official 567:a97fd0eca828 148 gpio->INTTYPESET |= obj->pin_index;
mbed_official 567:a97fd0eca828 149 gpio->INTENSET |= obj->pin_index;
mbed_official 567:a97fd0eca828 150
mbed_official 567:a97fd0eca828 151
mbed_official 567:a97fd0eca828 152 } else {
mbed_official 567:a97fd0eca828 153 if (event == IRQ_RISE) {
mbed_official 567:a97fd0eca828 154 obj->rise_null = 1;
mbed_official 567:a97fd0eca828 155 if(obj->fall_null)
mbed_official 567:a97fd0eca828 156 gpio->INTENCLR |= obj->pin_index;
mbed_official 567:a97fd0eca828 157 }
mbed_official 567:a97fd0eca828 158 else if (event == IRQ_FALL) {
mbed_official 567:a97fd0eca828 159 obj->fall_null = 1;
mbed_official 567:a97fd0eca828 160 if(obj->rise_null)
mbed_official 567:a97fd0eca828 161 gpio->INTENCLR |= obj->pin_index;
mbed_official 567:a97fd0eca828 162 }
mbed_official 567:a97fd0eca828 163 }
mbed_official 567:a97fd0eca828 164 }
mbed_official 567:a97fd0eca828 165
mbed_official 567:a97fd0eca828 166 void gpio_irq_enable(gpio_irq_t *obj)
mbed_official 567:a97fd0eca828 167 {
mbed_official 567:a97fd0eca828 168 NVIC_EnableIRQ(obj->irq_n);
mbed_official 567:a97fd0eca828 169 }
mbed_official 567:a97fd0eca828 170
mbed_official 567:a97fd0eca828 171 void gpio_irq_disable(gpio_irq_t *obj)
mbed_official 567:a97fd0eca828 172 {
mbed_official 567:a97fd0eca828 173 NVIC_DisableIRQ(obj->irq_n);
mbed_official 567:a97fd0eca828 174 obj->event = EDGE_NONE;
mbed_official 567:a97fd0eca828 175 }