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This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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_ARM_SSG/TARGET_MPS2/gpio_irq_api.c@580:3c14cb9b87c5, 2015-07-02 (annotated)

Committer:
mbed_official
Date:
Thu Jul 02 16:15:09 2015 +0100
Revision:
580:3c14cb9b87c5
Synchronized with git revision 213caf296f26963a7bea129b8ec4f33bbd1e6588



Full URL: https://github.com/mbedmicro/mbed/commit/213caf296f26963a7bea129b8ec4f33bbd1e6588/



commit of mps2

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 580:3c14cb9b87c5 1 /* mbed Microcontroller Library
mbed_official 580:3c14cb9b87c5 2 * Copyright (c) 2006-2015 ARM Limited
mbed_official 580:3c14cb9b87c5 3 *
mbed_official 580:3c14cb9b87c5 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 580:3c14cb9b87c5 5 * you may not use this file except in compliance with the License.
mbed_official 580:3c14cb9b87c5 6 * You may obtain a copy of the License at
mbed_official 580:3c14cb9b87c5 7 *
mbed_official 580:3c14cb9b87c5 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 580:3c14cb9b87c5 9 *
mbed_official 580:3c14cb9b87c5 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 580:3c14cb9b87c5 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 580:3c14cb9b87c5 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 580:3c14cb9b87c5 13 * See the License for the specific language governing permissions and
mbed_official 580:3c14cb9b87c5 14 * limitations under the License.
mbed_official 580:3c14cb9b87c5 15 */
mbed_official 580:3c14cb9b87c5 16 #include <stddef.h>
mbed_official 580:3c14cb9b87c5 17 #include "cmsis.h"
mbed_official 580:3c14cb9b87c5 18 #include "gpio_irq_api.h"
mbed_official 580:3c14cb9b87c5 19 #include "mbed_error.h"
mbed_official 580:3c14cb9b87c5 20
mbed_official 580:3c14cb9b87c5 21 #define CHANNEL_NUM 32
mbed_official 580:3c14cb9b87c5 22 #define CMSDK_GPIO_0 CMSDK_GPIO0
mbed_official 580:3c14cb9b87c5 23 #define CMSDK_GPIO_1 CMSDK_GPIO1
mbed_official 580:3c14cb9b87c5 24 #define PININT_IRQ 0
mbed_official 580:3c14cb9b87c5 25
mbed_official 580:3c14cb9b87c5 26 static uint32_t channel_ids[CHANNEL_NUM] = {0};
mbed_official 580:3c14cb9b87c5 27 static gpio_irq_handler irq_handler;
mbed_official 580:3c14cb9b87c5 28
mbed_official 580:3c14cb9b87c5 29 static inline void handle_interrupt_in(uint32_t channel) {
mbed_official 580:3c14cb9b87c5 30 uint32_t ch_bit = (1 << channel);
mbed_official 580:3c14cb9b87c5 31 // Return immediately if:
mbed_official 580:3c14cb9b87c5 32 // * The interrupt was already served
mbed_official 580:3c14cb9b87c5 33 // * There is no user handler
mbed_official 580:3c14cb9b87c5 34 // * It is a level interrupt, not an edge interrupt
mbed_official 580:3c14cb9b87c5 35 if (ch_bit <16){
mbed_official 580:3c14cb9b87c5 36 if ( ((CMSDK_GPIO_0->INTSTATUS) == 0) || (channel_ids[channel] == 0) || ((CMSDK_GPIO_0->INTTYPESET) == 0) ) return;
mbed_official 580:3c14cb9b87c5 37
mbed_official 580:3c14cb9b87c5 38 if ((CMSDK_GPIO_0->INTTYPESET & ch_bit) && (CMSDK_GPIO_0->INTPOLSET & ch_bit)) {
mbed_official 580:3c14cb9b87c5 39 irq_handler(channel_ids[channel], IRQ_RISE);
mbed_official 580:3c14cb9b87c5 40 CMSDK_GPIO_0->INTPOLSET = ch_bit;
mbed_official 580:3c14cb9b87c5 41 }
mbed_official 580:3c14cb9b87c5 42 if ((CMSDK_GPIO_0->INTTYPESET & ch_bit) && ~(CMSDK_GPIO_0->INTPOLSET & ch_bit)) {
mbed_official 580:3c14cb9b87c5 43 irq_handler(channel_ids[channel], IRQ_FALL);
mbed_official 580:3c14cb9b87c5 44 }
mbed_official 580:3c14cb9b87c5 45 CMSDK_GPIO_0->INTCLEAR = ch_bit;
mbed_official 580:3c14cb9b87c5 46 }
mbed_official 580:3c14cb9b87c5 47
mbed_official 580:3c14cb9b87c5 48 if (ch_bit>=16) {
mbed_official 580:3c14cb9b87c5 49 if ( ((CMSDK_GPIO_1->INTSTATUS) == 0) || (channel_ids[channel] == 0) || ((CMSDK_GPIO_1->INTTYPESET) == 0) ) return;
mbed_official 580:3c14cb9b87c5 50
mbed_official 580:3c14cb9b87c5 51 if ((CMSDK_GPIO_1->INTTYPESET & ch_bit) && (CMSDK_GPIO_1->INTPOLSET & ch_bit)) {
mbed_official 580:3c14cb9b87c5 52 irq_handler(channel_ids[channel], IRQ_RISE);
mbed_official 580:3c14cb9b87c5 53 CMSDK_GPIO_1->INTPOLSET = ch_bit;
mbed_official 580:3c14cb9b87c5 54 }
mbed_official 580:3c14cb9b87c5 55 if ((CMSDK_GPIO_1->INTTYPESET & ch_bit) && ~(CMSDK_GPIO_1->INTPOLSET & ch_bit)) {
mbed_official 580:3c14cb9b87c5 56 irq_handler(channel_ids[channel], IRQ_FALL);
mbed_official 580:3c14cb9b87c5 57 }
mbed_official 580:3c14cb9b87c5 58 CMSDK_GPIO_1->INTCLEAR = ch_bit;
mbed_official 580:3c14cb9b87c5 59 }
mbed_official 580:3c14cb9b87c5 60 }
mbed_official 580:3c14cb9b87c5 61
mbed_official 580:3c14cb9b87c5 62 void gpio0_irq0(void) {handle_interrupt_in(0);}
mbed_official 580:3c14cb9b87c5 63 void gpio0_irq1(void) {handle_interrupt_in(1);}
mbed_official 580:3c14cb9b87c5 64 void gpio0_irq2(void) {handle_interrupt_in(2);}
mbed_official 580:3c14cb9b87c5 65 void gpio0_irq3(void) {handle_interrupt_in(3);}
mbed_official 580:3c14cb9b87c5 66 void gpio0_irq4(void) {handle_interrupt_in(4);}
mbed_official 580:3c14cb9b87c5 67 void gpio0_irq5(void) {handle_interrupt_in(5);}
mbed_official 580:3c14cb9b87c5 68 void gpio0_irq6(void) {handle_interrupt_in(6);}
mbed_official 580:3c14cb9b87c5 69 void gpio0_irq7(void) {handle_interrupt_in(7);}
mbed_official 580:3c14cb9b87c5 70 void gpio0_irq8(void) {handle_interrupt_in(8);}
mbed_official 580:3c14cb9b87c5 71 void gpio0_irq9(void) {handle_interrupt_in(9);}
mbed_official 580:3c14cb9b87c5 72 void gpio0_irq10(void) {handle_interrupt_in(10);}
mbed_official 580:3c14cb9b87c5 73 void gpio0_irq11(void) {handle_interrupt_in(11);}
mbed_official 580:3c14cb9b87c5 74 void gpio0_irq12(void) {handle_interrupt_in(12);}
mbed_official 580:3c14cb9b87c5 75 void gpio0_irq13(void) {handle_interrupt_in(13);}
mbed_official 580:3c14cb9b87c5 76 void gpio0_irq14(void) {handle_interrupt_in(14);}
mbed_official 580:3c14cb9b87c5 77 void gpio0_irq15(void) {handle_interrupt_in(15);}
mbed_official 580:3c14cb9b87c5 78 void gpio1_irq0(void) {handle_interrupt_in(16);}
mbed_official 580:3c14cb9b87c5 79 void gpio1_irq1(void) {handle_interrupt_in(17);}
mbed_official 580:3c14cb9b87c5 80 void gpio1_irq2(void) {handle_interrupt_in(18);}
mbed_official 580:3c14cb9b87c5 81 void gpio1_irq3(void) {handle_interrupt_in(19);}
mbed_official 580:3c14cb9b87c5 82 void gpio1_irq4(void) {handle_interrupt_in(20);}
mbed_official 580:3c14cb9b87c5 83 void gpio1_irq5(void) {handle_interrupt_in(21);}
mbed_official 580:3c14cb9b87c5 84 void gpio1_irq6(void) {handle_interrupt_in(22);}
mbed_official 580:3c14cb9b87c5 85 void gpio1_irq7(void) {handle_interrupt_in(23);}
mbed_official 580:3c14cb9b87c5 86 void gpio1_irq8(void) {handle_interrupt_in(24);}
mbed_official 580:3c14cb9b87c5 87 void gpio1_irq9(void) {handle_interrupt_in(25);}
mbed_official 580:3c14cb9b87c5 88 void gpio1_irq10(void) {handle_interrupt_in(26);}
mbed_official 580:3c14cb9b87c5 89 void gpio1_irq11(void) {handle_interrupt_in(27);}
mbed_official 580:3c14cb9b87c5 90 void gpio1_irq12(void) {handle_interrupt_in(28);}
mbed_official 580:3c14cb9b87c5 91 void gpio1_irq13(void) {handle_interrupt_in(29);}
mbed_official 580:3c14cb9b87c5 92 void gpio1_irq14(void) {handle_interrupt_in(30);}
mbed_official 580:3c14cb9b87c5 93 void gpio1_irq15(void) {handle_interrupt_in(31);}
mbed_official 580:3c14cb9b87c5 94
mbed_official 580:3c14cb9b87c5 95
mbed_official 580:3c14cb9b87c5 96 int gpio_irq_init(gpio_irq_t *obj, PinName pin, gpio_irq_handler handler, uint32_t id) {
mbed_official 580:3c14cb9b87c5 97 if (pin == NC) {return -1;}
mbed_official 580:3c14cb9b87c5 98 else {
mbed_official 580:3c14cb9b87c5 99
mbed_official 580:3c14cb9b87c5 100 irq_handler = handler;
mbed_official 580:3c14cb9b87c5 101
mbed_official 580:3c14cb9b87c5 102 int found_free_channel = 0;
mbed_official 580:3c14cb9b87c5 103 int i = 0;
mbed_official 580:3c14cb9b87c5 104 for (i=0; i<CHANNEL_NUM; i++) {
mbed_official 580:3c14cb9b87c5 105 if (channel_ids[i] == 0) {
mbed_official 580:3c14cb9b87c5 106 channel_ids[i] = id;
mbed_official 580:3c14cb9b87c5 107 obj->ch = i;
mbed_official 580:3c14cb9b87c5 108 found_free_channel = 1;
mbed_official 580:3c14cb9b87c5 109 break;
mbed_official 580:3c14cb9b87c5 110 }
mbed_official 580:3c14cb9b87c5 111 }
mbed_official 580:3c14cb9b87c5 112 if (!found_free_channel) return -1;
mbed_official 580:3c14cb9b87c5 113
mbed_official 580:3c14cb9b87c5 114
mbed_official 580:3c14cb9b87c5 115 /* To select a pin for any of the eight pin interrupts, write the pin number
mbed_official 580:3c14cb9b87c5 116 * as 0 to 23 for pins PIO0_0 to PIO0_23 and 24 to 55.
mbed_official 580:3c14cb9b87c5 117 * @see: mbed_capi/PinNames.h
mbed_official 580:3c14cb9b87c5 118 */
mbed_official 580:3c14cb9b87c5 119 if (pin <16)
mbed_official 580:3c14cb9b87c5 120 {
mbed_official 580:3c14cb9b87c5 121 CMSDK_GPIO_0->INTENSET |= (0x1 << pin);
mbed_official 580:3c14cb9b87c5 122 }
mbed_official 580:3c14cb9b87c5 123
mbed_official 580:3c14cb9b87c5 124 if (pin >= 16)
mbed_official 580:3c14cb9b87c5 125 {
mbed_official 580:3c14cb9b87c5 126 CMSDK_GPIO_1->INTENSET |= (0x1 << pin);
mbed_official 580:3c14cb9b87c5 127 }
mbed_official 580:3c14cb9b87c5 128
mbed_official 580:3c14cb9b87c5 129 void (*channels_irq)(void) = NULL;
mbed_official 580:3c14cb9b87c5 130 switch (obj->ch) {
mbed_official 580:3c14cb9b87c5 131 case 0: channels_irq = &gpio0_irq0; break;
mbed_official 580:3c14cb9b87c5 132 case 1: channels_irq = &gpio0_irq1; break;
mbed_official 580:3c14cb9b87c5 133 case 2: channels_irq = &gpio0_irq2; break;
mbed_official 580:3c14cb9b87c5 134 case 3: channels_irq = &gpio0_irq3; break;
mbed_official 580:3c14cb9b87c5 135 case 4: channels_irq = &gpio0_irq4; break;
mbed_official 580:3c14cb9b87c5 136 case 5: channels_irq = &gpio0_irq5; break;
mbed_official 580:3c14cb9b87c5 137 case 6: channels_irq = &gpio0_irq6; break;
mbed_official 580:3c14cb9b87c5 138 case 7: channels_irq = &gpio0_irq7; break;
mbed_official 580:3c14cb9b87c5 139 case 8: channels_irq = &gpio0_irq8; break;
mbed_official 580:3c14cb9b87c5 140 case 9: channels_irq = &gpio0_irq9; break;
mbed_official 580:3c14cb9b87c5 141 case 10: channels_irq = &gpio0_irq10; break;
mbed_official 580:3c14cb9b87c5 142 case 11: channels_irq = &gpio0_irq11; break;
mbed_official 580:3c14cb9b87c5 143 case 12: channels_irq = &gpio0_irq12; break;
mbed_official 580:3c14cb9b87c5 144 case 13: channels_irq = &gpio0_irq13; break;
mbed_official 580:3c14cb9b87c5 145 case 14: channels_irq = &gpio0_irq14; break;
mbed_official 580:3c14cb9b87c5 146 case 15: channels_irq = &gpio0_irq15; break;
mbed_official 580:3c14cb9b87c5 147 case 16: channels_irq = &gpio1_irq0; break;
mbed_official 580:3c14cb9b87c5 148 case 17: channels_irq = &gpio1_irq1; break;
mbed_official 580:3c14cb9b87c5 149 case 18: channels_irq = &gpio1_irq2; break;
mbed_official 580:3c14cb9b87c5 150 case 19: channels_irq = &gpio1_irq3; break;
mbed_official 580:3c14cb9b87c5 151 case 20: channels_irq = &gpio1_irq4; break;
mbed_official 580:3c14cb9b87c5 152 case 21: channels_irq = &gpio1_irq5; break;
mbed_official 580:3c14cb9b87c5 153 case 22: channels_irq = &gpio1_irq6; break;
mbed_official 580:3c14cb9b87c5 154 case 23: channels_irq = &gpio1_irq7; break;
mbed_official 580:3c14cb9b87c5 155 case 24: channels_irq = &gpio1_irq8; break;
mbed_official 580:3c14cb9b87c5 156 case 25: channels_irq = &gpio1_irq9; break;
mbed_official 580:3c14cb9b87c5 157 case 26: channels_irq = &gpio1_irq10; break;
mbed_official 580:3c14cb9b87c5 158 case 27: channels_irq = &gpio1_irq11; break;
mbed_official 580:3c14cb9b87c5 159 case 28: channels_irq = &gpio1_irq12; break;
mbed_official 580:3c14cb9b87c5 160 case 29: channels_irq = &gpio1_irq13; break;
mbed_official 580:3c14cb9b87c5 161 case 30: channels_irq = &gpio1_irq14; break;
mbed_official 580:3c14cb9b87c5 162 case 31: channels_irq = &gpio1_irq15; break;
mbed_official 580:3c14cb9b87c5 163
mbed_official 580:3c14cb9b87c5 164 }
mbed_official 580:3c14cb9b87c5 165 NVIC_SetVector((IRQn_Type)(PININT_IRQ + obj->ch), (uint32_t)channels_irq);
mbed_official 580:3c14cb9b87c5 166 NVIC_EnableIRQ((IRQn_Type)(PININT_IRQ + obj->ch));
mbed_official 580:3c14cb9b87c5 167
mbed_official 580:3c14cb9b87c5 168 return 0;
mbed_official 580:3c14cb9b87c5 169 }
mbed_official 580:3c14cb9b87c5 170 }
mbed_official 580:3c14cb9b87c5 171
mbed_official 580:3c14cb9b87c5 172 void gpio_irq_free(gpio_irq_t *obj) {
mbed_official 580:3c14cb9b87c5 173 }
mbed_official 580:3c14cb9b87c5 174
mbed_official 580:3c14cb9b87c5 175 void gpio_irq_set(gpio_irq_t *obj, gpio_irq_event event, uint32_t enable) {
mbed_official 580:3c14cb9b87c5 176 unsigned int ch_bit = (1 << obj->ch);
mbed_official 580:3c14cb9b87c5 177
mbed_official 580:3c14cb9b87c5 178 // Clear interrupt
mbed_official 580:3c14cb9b87c5 179 if (obj->ch <16)
mbed_official 580:3c14cb9b87c5 180 {
mbed_official 580:3c14cb9b87c5 181 if (!(CMSDK_GPIO_0->INTTYPESET & ch_bit))
mbed_official 580:3c14cb9b87c5 182 {
mbed_official 580:3c14cb9b87c5 183 CMSDK_GPIO_0->INTCLEAR = ch_bit;
mbed_official 580:3c14cb9b87c5 184 }
mbed_official 580:3c14cb9b87c5 185 }
mbed_official 580:3c14cb9b87c5 186 if (obj->ch >= 16)
mbed_official 580:3c14cb9b87c5 187 {
mbed_official 580:3c14cb9b87c5 188 if (!(CMSDK_GPIO_1->INTTYPESET & ch_bit))
mbed_official 580:3c14cb9b87c5 189 {
mbed_official 580:3c14cb9b87c5 190 CMSDK_GPIO_1->INTCLEAR = ch_bit;
mbed_official 580:3c14cb9b87c5 191 }
mbed_official 580:3c14cb9b87c5 192 }
mbed_official 580:3c14cb9b87c5 193
mbed_official 580:3c14cb9b87c5 194 // Edge trigger
mbed_official 580:3c14cb9b87c5 195 if (obj->ch <16)
mbed_official 580:3c14cb9b87c5 196 {
mbed_official 580:3c14cb9b87c5 197 CMSDK_GPIO_0->INTTYPESET &= ch_bit;
mbed_official 580:3c14cb9b87c5 198 if (event == IRQ_RISE) {
mbed_official 580:3c14cb9b87c5 199 CMSDK_GPIO_0->INTPOLSET |= ch_bit;
mbed_official 580:3c14cb9b87c5 200 if (enable) {
mbed_official 580:3c14cb9b87c5 201 CMSDK_GPIO_0->INTENSET |= ch_bit;
mbed_official 580:3c14cb9b87c5 202 } else {
mbed_official 580:3c14cb9b87c5 203 CMSDK_GPIO_0->INTENCLR |= ch_bit;
mbed_official 580:3c14cb9b87c5 204 }
mbed_official 580:3c14cb9b87c5 205 } else {
mbed_official 580:3c14cb9b87c5 206 CMSDK_GPIO_0->INTPOLCLR |= ch_bit;
mbed_official 580:3c14cb9b87c5 207 if (enable) {
mbed_official 580:3c14cb9b87c5 208 CMSDK_GPIO_0->INTENSET |= ch_bit;
mbed_official 580:3c14cb9b87c5 209 } else {
mbed_official 580:3c14cb9b87c5 210 CMSDK_GPIO_0->INTENCLR |= ch_bit;
mbed_official 580:3c14cb9b87c5 211 }
mbed_official 580:3c14cb9b87c5 212 }
mbed_official 580:3c14cb9b87c5 213 }
mbed_official 580:3c14cb9b87c5 214 if (obj->ch >= 16)
mbed_official 580:3c14cb9b87c5 215 {
mbed_official 580:3c14cb9b87c5 216 CMSDK_GPIO_1->INTTYPESET &= ch_bit;
mbed_official 580:3c14cb9b87c5 217 if (event == IRQ_RISE) {
mbed_official 580:3c14cb9b87c5 218 CMSDK_GPIO_1->INTPOLSET |= ch_bit;
mbed_official 580:3c14cb9b87c5 219 if (enable) {
mbed_official 580:3c14cb9b87c5 220 CMSDK_GPIO_1->INTENSET |= ch_bit;
mbed_official 580:3c14cb9b87c5 221 } else {
mbed_official 580:3c14cb9b87c5 222 CMSDK_GPIO_1->INTENCLR |= ch_bit;
mbed_official 580:3c14cb9b87c5 223 }
mbed_official 580:3c14cb9b87c5 224 } else {
mbed_official 580:3c14cb9b87c5 225 CMSDK_GPIO_1->INTPOLCLR |= ch_bit;
mbed_official 580:3c14cb9b87c5 226 if (enable) {
mbed_official 580:3c14cb9b87c5 227 CMSDK_GPIO_1->INTENSET |= ch_bit;
mbed_official 580:3c14cb9b87c5 228 } else {
mbed_official 580:3c14cb9b87c5 229 CMSDK_GPIO_1->INTENCLR |= ch_bit;
mbed_official 580:3c14cb9b87c5 230 }
mbed_official 580:3c14cb9b87c5 231 }
mbed_official 580:3c14cb9b87c5 232 }
mbed_official 580:3c14cb9b87c5 233 }
mbed_official 580:3c14cb9b87c5 234
mbed_official 580:3c14cb9b87c5 235 void gpio_irq_enable(gpio_irq_t *obj) {
mbed_official 580:3c14cb9b87c5 236 NVIC_EnableIRQ((IRQn_Type)(PININT_IRQ + obj->ch));
mbed_official 580:3c14cb9b87c5 237 }
mbed_official 580:3c14cb9b87c5 238
mbed_official 580:3c14cb9b87c5 239 void gpio_irq_disable(gpio_irq_t *obj) {
mbed_official 580:3c14cb9b87c5 240 NVIC_DisableIRQ((IRQn_Type)(PININT_IRQ + obj->ch));
mbed_official 580:3c14cb9b87c5 241 }