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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/hal/TARGET_Freescale/TARGET_KPSDK_MCUS/TARGET_K64F/gpio_irq_api.c@149:1fb5f62b92bd, 2014-04-03 (annotated)

Committer:
mbed_official
Date:
Thu Apr 03 11:45:06 2014 +0100
Revision:
149:1fb5f62b92bd
Parent:
targets/hal/TARGET_Freescale/TARGET_KSDK_MCUS/TARGET_K64F/gpio_irq_api.c@148:213f3ebbe634
Child:
158:3121b9889f7b
Synchronized with git revision 220c0bb39ceee40016e1e86350c058963d01ed42



Full URL: https://github.com/mbedmicro/mbed/commit/220c0bb39ceee40016e1e86350c058963d01ed42/

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 146:f64d43ff0c18 1 /* mbed Microcontroller Library
mbed_official 146:f64d43ff0c18 2 * Copyright (c) 2006-2013 ARM Limited
mbed_official 146:f64d43ff0c18 3 *
mbed_official 146:f64d43ff0c18 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 146:f64d43ff0c18 5 * you may not use this file except in compliance with the License.
mbed_official 146:f64d43ff0c18 6 * You may obtain a copy of the License at
mbed_official 146:f64d43ff0c18 7 *
mbed_official 146:f64d43ff0c18 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 146:f64d43ff0c18 9 *
mbed_official 146:f64d43ff0c18 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 146:f64d43ff0c18 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 146:f64d43ff0c18 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 146:f64d43ff0c18 13 * See the License for the specific language governing permissions and
mbed_official 146:f64d43ff0c18 14 * limitations under the License.
mbed_official 146:f64d43ff0c18 15 */
mbed_official 146:f64d43ff0c18 16 #include <stddef.h>
mbed_official 146:f64d43ff0c18 17 #include "cmsis.h"
mbed_official 146:f64d43ff0c18 18
mbed_official 146:f64d43ff0c18 19 #include "gpio_irq_api.h"
mbed_official 146:f64d43ff0c18 20 #include "gpio_api.h"
mbed_official 146:f64d43ff0c18 21 #include "fsl_gpio_hal.h"
mbed_official 146:f64d43ff0c18 22 #include "fsl_port_hal.h"
mbed_official 146:f64d43ff0c18 23 #include "error.h"
mbed_official 146:f64d43ff0c18 24
mbed_official 146:f64d43ff0c18 25 #define CHANNEL_NUM 160
mbed_official 146:f64d43ff0c18 26
mbed_official 146:f64d43ff0c18 27 static uint32_t channel_ids[CHANNEL_NUM] = {0};
mbed_official 146:f64d43ff0c18 28 static gpio_irq_handler irq_handler;
mbed_official 146:f64d43ff0c18 29
mbed_official 146:f64d43ff0c18 30 #define IRQ_DISABLED (0)
mbed_official 146:f64d43ff0c18 31 #define IRQ_RAISING_EDGE (9)
mbed_official 146:f64d43ff0c18 32 #define IRQ_FALLING_EDGE (10)
mbed_official 146:f64d43ff0c18 33 #define IRQ_EITHER_EDGE (11)
mbed_official 146:f64d43ff0c18 34
mbed_official 146:f64d43ff0c18 35 static void handle_interrupt_in(PortName port, int ch_base) {
mbed_official 146:f64d43ff0c18 36 uint32_t i;
mbed_official 146:f64d43ff0c18 37
mbed_official 146:f64d43ff0c18 38 for (i = 0; i < 32; i++) {
mbed_official 146:f64d43ff0c18 39 if (port_hal_read_pin_interrupt_flag(port, i)) {
mbed_official 146:f64d43ff0c18 40 uint32_t id = channel_ids[ch_base + i];
mbed_official 146:f64d43ff0c18 41 if (id == 0) {
mbed_official 146:f64d43ff0c18 42 continue;
mbed_official 146:f64d43ff0c18 43 }
mbed_official 146:f64d43ff0c18 44
mbed_official 146:f64d43ff0c18 45 gpio_irq_event event = IRQ_NONE;
mbed_official 146:f64d43ff0c18 46 switch (BR_PORT_PCRn_IRQC(port, i)) {
mbed_official 146:f64d43ff0c18 47 case IRQ_RAISING_EDGE:
mbed_official 146:f64d43ff0c18 48 event = IRQ_RISE;
mbed_official 146:f64d43ff0c18 49 break;
mbed_official 146:f64d43ff0c18 50
mbed_official 146:f64d43ff0c18 51 case IRQ_FALLING_EDGE:
mbed_official 146:f64d43ff0c18 52 event = IRQ_FALL;
mbed_official 146:f64d43ff0c18 53 break;
mbed_official 146:f64d43ff0c18 54
mbed_official 146:f64d43ff0c18 55 case IRQ_EITHER_EDGE:
mbed_official 146:f64d43ff0c18 56 event = (gpio_hal_read_pin_input(port, i)) ? (IRQ_RISE) : (IRQ_FALL);
mbed_official 146:f64d43ff0c18 57 break;
mbed_official 146:f64d43ff0c18 58 }
mbed_official 146:f64d43ff0c18 59 if (event != IRQ_NONE) {
mbed_official 146:f64d43ff0c18 60 irq_handler(id, event);
mbed_official 146:f64d43ff0c18 61 }
mbed_official 146:f64d43ff0c18 62 }
mbed_official 146:f64d43ff0c18 63 }
mbed_official 146:f64d43ff0c18 64 port_hal_clear_port_interrupt_flag(port);
mbed_official 146:f64d43ff0c18 65 }
mbed_official 146:f64d43ff0c18 66
mbed_official 146:f64d43ff0c18 67 void gpio_irqA(void) {handle_interrupt_in(PortA, 0);}
mbed_official 146:f64d43ff0c18 68 void gpio_irqB(void) {handle_interrupt_in(PortB, 32);}
mbed_official 146:f64d43ff0c18 69 void gpio_irqC(void) {handle_interrupt_in(PortC, 64);}
mbed_official 146:f64d43ff0c18 70 void gpio_irqD(void) {handle_interrupt_in(PortD, 96);}
mbed_official 146:f64d43ff0c18 71 void gpio_irqE(void) {handle_interrupt_in(PortE, 128);}
mbed_official 146:f64d43ff0c18 72
mbed_official 146:f64d43ff0c18 73 int gpio_irq_init(gpio_irq_t *obj, PinName pin, gpio_irq_handler handler, uint32_t id) {
mbed_official 146:f64d43ff0c18 74 if (pin == NC) {
mbed_official 146:f64d43ff0c18 75 return -1;
mbed_official 146:f64d43ff0c18 76 }
mbed_official 146:f64d43ff0c18 77
mbed_official 146:f64d43ff0c18 78 irq_handler = handler;
mbed_official 146:f64d43ff0c18 79 obj->port = pin >> GPIO_PORT_SHIFT;
mbed_official 146:f64d43ff0c18 80 obj->pin = pin & 0x7F;
mbed_official 146:f64d43ff0c18 81
mbed_official 146:f64d43ff0c18 82 uint32_t ch_base, vector;
mbed_official 146:f64d43ff0c18 83 IRQn_Type irq_n;
mbed_official 146:f64d43ff0c18 84 switch (obj->port) {
mbed_official 146:f64d43ff0c18 85 case PortA:
mbed_official 146:f64d43ff0c18 86 ch_base = 0;
mbed_official 146:f64d43ff0c18 87 irq_n = PORTA_IRQn;
mbed_official 146:f64d43ff0c18 88 vector = (uint32_t)gpio_irqA;
mbed_official 146:f64d43ff0c18 89 break;
mbed_official 146:f64d43ff0c18 90 case PortB:
mbed_official 146:f64d43ff0c18 91 ch_base = 32;
mbed_official 146:f64d43ff0c18 92 irq_n = PORTB_IRQn;
mbed_official 146:f64d43ff0c18 93 vector = (uint32_t)gpio_irqB;
mbed_official 146:f64d43ff0c18 94 break;
mbed_official 146:f64d43ff0c18 95 case PortC:
mbed_official 146:f64d43ff0c18 96 ch_base = 64;
mbed_official 146:f64d43ff0c18 97 irq_n = PORTC_IRQn;
mbed_official 146:f64d43ff0c18 98 vector = (uint32_t)gpio_irqC;
mbed_official 146:f64d43ff0c18 99 break;
mbed_official 146:f64d43ff0c18 100 case PortD:
mbed_official 146:f64d43ff0c18 101 ch_base = 96;
mbed_official 146:f64d43ff0c18 102 irq_n = PORTD_IRQn;
mbed_official 146:f64d43ff0c18 103 vector = (uint32_t)gpio_irqD;
mbed_official 146:f64d43ff0c18 104 break;
mbed_official 146:f64d43ff0c18 105 case PortE:
mbed_official 146:f64d43ff0c18 106 ch_base = 128;
mbed_official 146:f64d43ff0c18 107 irq_n = PORTE_IRQn;
mbed_official 146:f64d43ff0c18 108 vector = (uint32_t)gpio_irqE;
mbed_official 146:f64d43ff0c18 109 break;
mbed_official 146:f64d43ff0c18 110
mbed_official 146:f64d43ff0c18 111 default:
mbed_official 146:f64d43ff0c18 112 error("gpio_irq only supported on port A-E.\n");
mbed_official 146:f64d43ff0c18 113 break;
mbed_official 146:f64d43ff0c18 114 }
mbed_official 146:f64d43ff0c18 115 NVIC_SetVector(irq_n, vector);
mbed_official 146:f64d43ff0c18 116 NVIC_EnableIRQ(irq_n);
mbed_official 146:f64d43ff0c18 117
mbed_official 146:f64d43ff0c18 118 obj->ch = ch_base + obj->pin;
mbed_official 146:f64d43ff0c18 119 channel_ids[obj->ch] = id;
mbed_official 146:f64d43ff0c18 120
mbed_official 146:f64d43ff0c18 121 return 0;
mbed_official 146:f64d43ff0c18 122 }
mbed_official 146:f64d43ff0c18 123
mbed_official 146:f64d43ff0c18 124 void gpio_irq_free(gpio_irq_t *obj) {
mbed_official 146:f64d43ff0c18 125 channel_ids[obj->ch] = 0;
mbed_official 146:f64d43ff0c18 126 }
mbed_official 146:f64d43ff0c18 127
mbed_official 146:f64d43ff0c18 128 void gpio_irq_set(gpio_irq_t *obj, gpio_irq_event event, uint32_t enable) {
mbed_official 146:f64d43ff0c18 129 port_interrupt_config_t irq_settings = kPortIntDisabled;
mbed_official 146:f64d43ff0c18 130
mbed_official 146:f64d43ff0c18 131 switch (BR_PORT_PCRn_IRQC(obj->port, obj->pin)) {
mbed_official 146:f64d43ff0c18 132 case IRQ_DISABLED:
mbed_official 146:f64d43ff0c18 133 if (enable)
mbed_official 146:f64d43ff0c18 134 irq_settings = (event == IRQ_RISE) ? (kPortIntRisingEdge) : (kPortIntFallingEdge);
mbed_official 146:f64d43ff0c18 135 break;
mbed_official 146:f64d43ff0c18 136
mbed_official 146:f64d43ff0c18 137 case IRQ_RAISING_EDGE:
mbed_official 146:f64d43ff0c18 138 if (enable) {
mbed_official 146:f64d43ff0c18 139 irq_settings = (event == IRQ_RISE) ? (kPortIntRisingEdge) : (kPortIntEitherEdge);
mbed_official 146:f64d43ff0c18 140 } else {
mbed_official 146:f64d43ff0c18 141 if (event == IRQ_FALL)
mbed_official 146:f64d43ff0c18 142 irq_settings = kPortIntRisingEdge;
mbed_official 146:f64d43ff0c18 143 }
mbed_official 146:f64d43ff0c18 144 break;
mbed_official 146:f64d43ff0c18 145
mbed_official 146:f64d43ff0c18 146 case IRQ_FALLING_EDGE:
mbed_official 146:f64d43ff0c18 147 if (enable) {
mbed_official 146:f64d43ff0c18 148 irq_settings = (event == IRQ_FALL) ? (kPortIntFallingEdge) : (kPortIntEitherEdge);
mbed_official 146:f64d43ff0c18 149 } else {
mbed_official 146:f64d43ff0c18 150 if (event == IRQ_RISE)
mbed_official 146:f64d43ff0c18 151 irq_settings = kPortIntFallingEdge;
mbed_official 146:f64d43ff0c18 152 }
mbed_official 146:f64d43ff0c18 153 break;
mbed_official 146:f64d43ff0c18 154
mbed_official 146:f64d43ff0c18 155 case IRQ_EITHER_EDGE:
mbed_official 146:f64d43ff0c18 156 if (enable) {
mbed_official 146:f64d43ff0c18 157 irq_settings = kPortIntEitherEdge;
mbed_official 146:f64d43ff0c18 158 } else {
mbed_official 146:f64d43ff0c18 159 irq_settings = (event == IRQ_RISE) ? (kPortIntFallingEdge) : (kPortIntRisingEdge);
mbed_official 146:f64d43ff0c18 160 }
mbed_official 146:f64d43ff0c18 161 break;
mbed_official 146:f64d43ff0c18 162 }
mbed_official 146:f64d43ff0c18 163
mbed_official 146:f64d43ff0c18 164 port_hal_configure_pin_interrupt(obj->port, obj->pin, irq_settings);
mbed_official 146:f64d43ff0c18 165 port_hal_clear_pin_interrupt_flag(obj->port, obj->pin);
mbed_official 146:f64d43ff0c18 166 }
mbed_official 146:f64d43ff0c18 167
mbed_official 146:f64d43ff0c18 168 void gpio_irq_enable(gpio_irq_t *obj) {
mbed_official 146:f64d43ff0c18 169 switch (obj->port) {
mbed_official 146:f64d43ff0c18 170 case PortA:
mbed_official 146:f64d43ff0c18 171 NVIC_EnableIRQ(PORTA_IRQn);
mbed_official 146:f64d43ff0c18 172 break;
mbed_official 146:f64d43ff0c18 173 case PortB:
mbed_official 146:f64d43ff0c18 174 NVIC_EnableIRQ(PORTB_IRQn);
mbed_official 146:f64d43ff0c18 175 break;
mbed_official 146:f64d43ff0c18 176 case PortC:
mbed_official 146:f64d43ff0c18 177 NVIC_EnableIRQ(PORTC_IRQn);
mbed_official 146:f64d43ff0c18 178 break;
mbed_official 146:f64d43ff0c18 179 case PortD:
mbed_official 146:f64d43ff0c18 180 NVIC_EnableIRQ(PORTD_IRQn);
mbed_official 146:f64d43ff0c18 181 break;
mbed_official 146:f64d43ff0c18 182 case PortE:
mbed_official 146:f64d43ff0c18 183 NVIC_EnableIRQ(PORTE_IRQn);
mbed_official 146:f64d43ff0c18 184 break;
mbed_official 146:f64d43ff0c18 185 }
mbed_official 146:f64d43ff0c18 186 }
mbed_official 146:f64d43ff0c18 187
mbed_official 146:f64d43ff0c18 188 void gpio_irq_disable(gpio_irq_t *obj) {
mbed_official 146:f64d43ff0c18 189 switch (obj->port) {
mbed_official 146:f64d43ff0c18 190 case PortA:
mbed_official 146:f64d43ff0c18 191 NVIC_DisableIRQ(PORTA_IRQn);
mbed_official 146:f64d43ff0c18 192 break;
mbed_official 146:f64d43ff0c18 193 case PortB:
mbed_official 146:f64d43ff0c18 194 NVIC_DisableIRQ(PORTB_IRQn);
mbed_official 146:f64d43ff0c18 195 break;
mbed_official 146:f64d43ff0c18 196 case PortC:
mbed_official 146:f64d43ff0c18 197 NVIC_DisableIRQ(PORTC_IRQn);
mbed_official 146:f64d43ff0c18 198 break;
mbed_official 146:f64d43ff0c18 199 case PortD:
mbed_official 146:f64d43ff0c18 200 NVIC_DisableIRQ(PORTD_IRQn);
mbed_official 146:f64d43ff0c18 201 break;
mbed_official 146:f64d43ff0c18 202 case PortE:
mbed_official 146:f64d43ff0c18 203 NVIC_DisableIRQ(PORTE_IRQn);
mbed_official 146:f64d43ff0c18 204 break;
mbed_official 146:f64d43ff0c18 205 }
mbed_official 146:f64d43ff0c18 206 }
mbed_official 146:f64d43ff0c18 207