mbed official / mbed-src

mbed library sources

Dependents:   Encrypted my_mbed lklk CyaSSL_DTLS_Cellular ... more

Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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

Import librarymbed

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_STM/TARGET_STM32F1/gpio_irq_api.c@621:9c82b0f79f3d, 2015-09-11 (annotated)

Committer:
mbed_official
Date:
Fri Sep 11 09:30:09 2015 +0100
Revision:
621:9c82b0f79f3d
Parent:
508:4f5903e025e6 
Synchronized with git revision 6c1d63e069ab9bd86de92e8296ca783681257538



Full URL: https://github.com/mbedmicro/mbed/commit/6c1d63e069ab9bd86de92e8296ca783681257538/



ignore target files not supported by the yotta module

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 60:142c6c6f5949 1 /* mbed Microcontroller Library
mbed_official 70:c1fbde68b492 2 *******************************************************************************
mbed_official 70:c1fbde68b492 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 70:c1fbde68b492 4 * All rights reserved.
mbed_official 60:142c6c6f5949 5 *
mbed_official 70:c1fbde68b492 6 * Redistribution and use in source and binary forms, with or without
mbed_official 70:c1fbde68b492 7 * modification, are permitted provided that the following conditions are met:
mbed_official 60:142c6c6f5949 8 *
mbed_official 70:c1fbde68b492 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 70:c1fbde68b492 10 * this list of conditions and the following disclaimer.
mbed_official 70:c1fbde68b492 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 70:c1fbde68b492 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 70:c1fbde68b492 13 * and/or other materials provided with the distribution.
mbed_official 70:c1fbde68b492 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 70:c1fbde68b492 15 * may be used to endorse or promote products derived from this software
mbed_official 70:c1fbde68b492 16 * without specific prior written permission.
mbed_official 60:142c6c6f5949 17 *
mbed_official 70:c1fbde68b492 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 70:c1fbde68b492 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 70:c1fbde68b492 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 70:c1fbde68b492 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 70:c1fbde68b492 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 70:c1fbde68b492 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 70:c1fbde68b492 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 70:c1fbde68b492 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 70:c1fbde68b492 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 70:c1fbde68b492 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 70:c1fbde68b492 28 *******************************************************************************
mbed_official 60:142c6c6f5949 29 */
mbed_official 60:142c6c6f5949 30 #include <stddef.h>
mbed_official 60:142c6c6f5949 31 #include "cmsis.h"
mbed_official 60:142c6c6f5949 32 #include "gpio_irq_api.h"
mbed_official 76:aeb1df146756 33 #include "pinmap.h"
mbed_official 285:31249416b6f9 34 #include "mbed_error.h"
mbed_official 60:142c6c6f5949 35
mbed_official 60:142c6c6f5949 36 #define EDGE_NONE (0)
mbed_official 60:142c6c6f5949 37 #define EDGE_RISE (1)
mbed_official 60:142c6c6f5949 38 #define EDGE_FALL (2)
mbed_official 60:142c6c6f5949 39 #define EDGE_BOTH (3)
mbed_official 60:142c6c6f5949 40
mbed_official 489:119543c9f674 41 // Number of EXTI irq vectors (EXTI0, EXTI1, EXTI2, EXTI3, EXTI4, EXTI5_9, EXTI10_15)
mbed_official 156:38b9eb24e1d1 42 #define CHANNEL_NUM (7)
mbed_official 489:119543c9f674 43
mbed_official 454:a07e52520545 44 // Max pins for one line (max with EXTI10_15)
mbed_official 454:a07e52520545 45 #define MAX_PIN_LINE (6)
mbed_official 60:142c6c6f5949 46
mbed_official 454:a07e52520545 47 typedef struct gpio_channel {
mbed_official 454:a07e52520545 48 uint32_t pin_mask; // bitmask representing which pins are configured for receiving interrupts
mbed_official 454:a07e52520545 49 uint32_t channel_ids[MAX_PIN_LINE]; // mbed "gpio_irq_t gpio_irq" field of instance
mbed_official 454:a07e52520545 50 uint32_t channel_gpio[MAX_PIN_LINE]; // base address of gpio port group
mbed_official 454:a07e52520545 51 uint32_t channel_pin[MAX_PIN_LINE]; // pin number in port group
mbed_official 454:a07e52520545 52 } gpio_channel_t;
mbed_official 454:a07e52520545 53
mbed_official 454:a07e52520545 54 static gpio_channel_t channels[CHANNEL_NUM] = {
mbed_official 454:a07e52520545 55 {.pin_mask = 0},
mbed_official 454:a07e52520545 56 {.pin_mask = 0},
mbed_official 454:a07e52520545 57 {.pin_mask = 0},
mbed_official 454:a07e52520545 58 {.pin_mask = 0},
mbed_official 454:a07e52520545 59 {.pin_mask = 0},
mbed_official 454:a07e52520545 60 {.pin_mask = 0},
mbed_official 454:a07e52520545 61 {.pin_mask = 0}
mbed_official 454:a07e52520545 62 };
mbed_official 454:a07e52520545 63
mbed_official 454:a07e52520545 64 // Used to return the index for channels array.
mbed_official 454:a07e52520545 65 static uint32_t pin_base_nr[16] = {
mbed_official 454:a07e52520545 66 // EXTI0
mbed_official 454:a07e52520545 67 0, // pin 0
mbed_official 454:a07e52520545 68 // EXTI1
mbed_official 454:a07e52520545 69 0, // pin 1
mbed_official 454:a07e52520545 70 // EXTI2
mbed_official 454:a07e52520545 71 0, // pin 2
mbed_official 454:a07e52520545 72 // EXTI3
mbed_official 454:a07e52520545 73 0, // pin 3
mbed_official 454:a07e52520545 74 // EXTI4
mbed_official 454:a07e52520545 75 0, // pin 4
mbed_official 454:a07e52520545 76 // EXTI5_9
mbed_official 454:a07e52520545 77 0, // pin 5
mbed_official 454:a07e52520545 78 1, // pin 6
mbed_official 454:a07e52520545 79 2, // pin 7
mbed_official 454:a07e52520545 80 3, // pin 8
mbed_official 454:a07e52520545 81 4, // pin 9
mbed_official 454:a07e52520545 82 // EXTI10_15
mbed_official 454:a07e52520545 83 0, // pin 10
mbed_official 454:a07e52520545 84 1, // pin 11
mbed_official 454:a07e52520545 85 2, // pin 12
mbed_official 454:a07e52520545 86 3, // pin 13
mbed_official 454:a07e52520545 87 4, // pin 14
mbed_official 454:a07e52520545 88 5 // pin 15
mbed_official 454:a07e52520545 89 };
mbed_official 60:142c6c6f5949 90
mbed_official 60:142c6c6f5949 91 static gpio_irq_handler irq_handler;
mbed_official 60:142c6c6f5949 92
mbed_official 454:a07e52520545 93 static void handle_interrupt_in(uint32_t irq_index, uint32_t max_num_pin_line)
mbed_official 402:09075a3b15e3 94 {
mbed_official 454:a07e52520545 95 gpio_channel_t *gpio_channel = &channels[irq_index];
mbed_official 454:a07e52520545 96 uint32_t gpio_idx;
mbed_official 454:a07e52520545 97
mbed_official 454:a07e52520545 98 for (gpio_idx = 0; gpio_idx < max_num_pin_line; gpio_idx++) {
mbed_official 454:a07e52520545 99 uint32_t current_mask = (1 << gpio_idx);
mbed_official 454:a07e52520545 100
mbed_official 454:a07e52520545 101 if (gpio_channel->pin_mask & current_mask) {
mbed_official 454:a07e52520545 102 // Retrieve the gpio and pin that generate the irq
mbed_official 454:a07e52520545 103 GPIO_TypeDef *gpio = (GPIO_TypeDef *)(gpio_channel->channel_gpio[gpio_idx]);
mbed_official 454:a07e52520545 104 uint32_t pin = (uint32_t)(1 << (gpio_channel->channel_pin[gpio_idx]));
mbed_official 156:38b9eb24e1d1 105
mbed_official 454:a07e52520545 106 // Clear interrupt flag
mbed_official 489:119543c9f674 107 if (__HAL_GPIO_EXTI_GET_FLAG(pin) != RESET) {
mbed_official 489:119543c9f674 108 __HAL_GPIO_EXTI_CLEAR_FLAG(pin);
mbed_official 454:a07e52520545 109
mbed_official 454:a07e52520545 110 if (gpio_channel->channel_ids[gpio_idx] == 0) continue;
mbed_official 174:8bb9f3a33240 111
mbed_official 454:a07e52520545 112 // Check which edge has generated the irq
mbed_official 454:a07e52520545 113 if ((gpio->IDR & pin) == 0) {
mbed_official 454:a07e52520545 114 irq_handler(gpio_channel->channel_ids[gpio_idx], IRQ_FALL);
mbed_official 454:a07e52520545 115 } else {
mbed_official 454:a07e52520545 116 irq_handler(gpio_channel->channel_ids[gpio_idx], IRQ_RISE);
mbed_official 454:a07e52520545 117 }
mbed_official 454:a07e52520545 118 }
mbed_official 454:a07e52520545 119 }
mbed_official 60:142c6c6f5949 120 }
mbed_official 60:142c6c6f5949 121 }
mbed_official 60:142c6c6f5949 122
mbed_official 454:a07e52520545 123 // EXTI line 0
mbed_official 402:09075a3b15e3 124 static void gpio_irq0(void)
mbed_official 402:09075a3b15e3 125 {
mbed_official 454:a07e52520545 126 handle_interrupt_in(0, 1);
mbed_official 174:8bb9f3a33240 127 }
mbed_official 454:a07e52520545 128
mbed_official 454:a07e52520545 129 // EXTI line 1
mbed_official 402:09075a3b15e3 130 static void gpio_irq1(void)
mbed_official 402:09075a3b15e3 131 {
mbed_official 454:a07e52520545 132 handle_interrupt_in(1, 1);
mbed_official 174:8bb9f3a33240 133 }
mbed_official 454:a07e52520545 134
mbed_official 454:a07e52520545 135 // EXTI line 2
mbed_official 402:09075a3b15e3 136 static void gpio_irq2(void)
mbed_official 402:09075a3b15e3 137 {
mbed_official 454:a07e52520545 138 handle_interrupt_in(2, 1);
mbed_official 174:8bb9f3a33240 139 }
mbed_official 454:a07e52520545 140
mbed_official 454:a07e52520545 141 // EXTI line 3
mbed_official 402:09075a3b15e3 142 static void gpio_irq3(void)
mbed_official 402:09075a3b15e3 143 {
mbed_official 454:a07e52520545 144 handle_interrupt_in(3, 1);
mbed_official 174:8bb9f3a33240 145 }
mbed_official 454:a07e52520545 146
mbed_official 454:a07e52520545 147 // EXTI line 4
mbed_official 402:09075a3b15e3 148 static void gpio_irq4(void)
mbed_official 402:09075a3b15e3 149 {
mbed_official 454:a07e52520545 150 handle_interrupt_in(4, 1);
mbed_official 174:8bb9f3a33240 151 }
mbed_official 454:a07e52520545 152
mbed_official 454:a07e52520545 153 // EXTI lines 5 to 9
mbed_official 402:09075a3b15e3 154 static void gpio_irq5(void)
mbed_official 402:09075a3b15e3 155 {
mbed_official 454:a07e52520545 156 handle_interrupt_in(5, 5);
mbed_official 174:8bb9f3a33240 157 }
mbed_official 454:a07e52520545 158
mbed_official 454:a07e52520545 159 // EXTI lines 10 to 15
mbed_official 402:09075a3b15e3 160 static void gpio_irq6(void)
mbed_official 402:09075a3b15e3 161 {
mbed_official 454:a07e52520545 162 handle_interrupt_in(6, 6);
mbed_official 174:8bb9f3a33240 163 }
mbed_official 76:aeb1df146756 164
mbed_official 76:aeb1df146756 165 extern uint32_t Set_GPIO_Clock(uint32_t port_idx);
mbed_official 60:142c6c6f5949 166
mbed_official 402:09075a3b15e3 167 int gpio_irq_init(gpio_irq_t *obj, PinName pin, gpio_irq_handler handler, uint32_t id)
mbed_official 402:09075a3b15e3 168 {
mbed_official 76:aeb1df146756 169 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 60:142c6c6f5949 170 uint32_t vector = 0;
mbed_official 76:aeb1df146756 171 uint32_t irq_index;
mbed_official 454:a07e52520545 172 gpio_channel_t *gpio_channel;
mbed_official 454:a07e52520545 173 uint32_t gpio_idx;
mbed_official 76:aeb1df146756 174
mbed_official 60:142c6c6f5949 175 if (pin == NC) return -1;
mbed_official 60:142c6c6f5949 176
mbed_official 76:aeb1df146756 177 uint32_t port_index = STM_PORT(pin);
mbed_official 76:aeb1df146756 178 uint32_t pin_index = STM_PIN(pin);
mbed_official 76:aeb1df146756 179
mbed_official 76:aeb1df146756 180 // Select irq number and interrupt routine
mbed_official 156:38b9eb24e1d1 181 switch (pin_index) {
mbed_official 156:38b9eb24e1d1 182 case 0:
mbed_official 156:38b9eb24e1d1 183 irq_n = EXTI0_IRQn;
mbed_official 60:142c6c6f5949 184 vector = (uint32_t)&gpio_irq0;
mbed_official 76:aeb1df146756 185 irq_index = 0;
mbed_official 60:142c6c6f5949 186 break;
mbed_official 156:38b9eb24e1d1 187 case 1:
mbed_official 156:38b9eb24e1d1 188 irq_n = EXTI1_IRQn;
mbed_official 76:aeb1df146756 189 vector = (uint32_t)&gpio_irq1;
mbed_official 76:aeb1df146756 190 irq_index = 1;
mbed_official 60:142c6c6f5949 191 break;
mbed_official 156:38b9eb24e1d1 192 case 2:
mbed_official 156:38b9eb24e1d1 193 irq_n = EXTI2_IRQn;
mbed_official 76:aeb1df146756 194 vector = (uint32_t)&gpio_irq2;
mbed_official 76:aeb1df146756 195 irq_index = 2;
mbed_official 76:aeb1df146756 196 break;
mbed_official 156:38b9eb24e1d1 197 case 3:
mbed_official 156:38b9eb24e1d1 198 irq_n = EXTI3_IRQn;
mbed_official 76:aeb1df146756 199 vector = (uint32_t)&gpio_irq3;
mbed_official 76:aeb1df146756 200 irq_index = 3;
mbed_official 60:142c6c6f5949 201 break;
mbed_official 156:38b9eb24e1d1 202 case 4:
mbed_official 156:38b9eb24e1d1 203 irq_n = EXTI4_IRQn;
mbed_official 156:38b9eb24e1d1 204 vector = (uint32_t)&gpio_irq4;
mbed_official 156:38b9eb24e1d1 205 irq_index = 4;
mbed_official 156:38b9eb24e1d1 206 break;
mbed_official 156:38b9eb24e1d1 207 case 5:
mbed_official 156:38b9eb24e1d1 208 case 6:
mbed_official 156:38b9eb24e1d1 209 case 7:
mbed_official 156:38b9eb24e1d1 210 case 8:
mbed_official 156:38b9eb24e1d1 211 case 9:
mbed_official 156:38b9eb24e1d1 212 irq_n = EXTI9_5_IRQn;
mbed_official 156:38b9eb24e1d1 213 vector = (uint32_t)&gpio_irq5;
mbed_official 156:38b9eb24e1d1 214 irq_index = 5;
mbed_official 156:38b9eb24e1d1 215 break;
mbed_official 156:38b9eb24e1d1 216 case 10:
mbed_official 156:38b9eb24e1d1 217 case 11:
mbed_official 156:38b9eb24e1d1 218 case 12:
mbed_official 156:38b9eb24e1d1 219 case 13:
mbed_official 156:38b9eb24e1d1 220 case 14:
mbed_official 156:38b9eb24e1d1 221 case 15:
mbed_official 156:38b9eb24e1d1 222 irq_n = EXTI15_10_IRQn;
mbed_official 156:38b9eb24e1d1 223 vector = (uint32_t)&gpio_irq6;
mbed_official 156:38b9eb24e1d1 224 irq_index = 6;
mbed_official 156:38b9eb24e1d1 225 break;
mbed_official 60:142c6c6f5949 226 default:
mbed_official 156:38b9eb24e1d1 227 error("InterruptIn error: pin not supported.\n");
mbed_official 60:142c6c6f5949 228 return -1;
mbed_official 60:142c6c6f5949 229 }
mbed_official 76:aeb1df146756 230
mbed_official 76:aeb1df146756 231 // Enable GPIO clock
mbed_official 76:aeb1df146756 232 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 174:8bb9f3a33240 233
mbed_official 489:119543c9f674 234 // Configure GPIO
mbed_official 489:119543c9f674 235 pin_function(pin, STM_PIN_DATA(STM_MODE_IT_FALLING, GPIO_NOPULL, 0));
mbed_official 60:142c6c6f5949 236
mbed_official 489:119543c9f674 237 // Enable EXTI interrupt
mbed_official 60:142c6c6f5949 238 NVIC_SetVector(irq_n, vector);
mbed_official 60:142c6c6f5949 239 NVIC_EnableIRQ(irq_n);
mbed_official 60:142c6c6f5949 240
mbed_official 76:aeb1df146756 241 // Save informations for future use
mbed_official 60:142c6c6f5949 242 obj->irq_n = irq_n;
mbed_official 76:aeb1df146756 243 obj->irq_index = irq_index;
mbed_official 60:142c6c6f5949 244 obj->event = EDGE_NONE;
mbed_official 454:a07e52520545 245 obj->pin = pin;
mbed_official 454:a07e52520545 246
mbed_official 454:a07e52520545 247 gpio_channel = &channels[irq_index];
mbed_official 454:a07e52520545 248 gpio_idx = pin_base_nr[pin_index];
mbed_official 454:a07e52520545 249 gpio_channel->pin_mask |= (1 << gpio_idx);
mbed_official 454:a07e52520545 250 gpio_channel->channel_ids[gpio_idx] = id;
mbed_official 454:a07e52520545 251 gpio_channel->channel_gpio[gpio_idx] = gpio_add;
mbed_official 454:a07e52520545 252 gpio_channel->channel_pin[gpio_idx] = pin_index;
mbed_official 174:8bb9f3a33240 253
mbed_official 174:8bb9f3a33240 254 irq_handler = handler;
mbed_official 174:8bb9f3a33240 255
mbed_official 60:142c6c6f5949 256 return 0;
mbed_official 60:142c6c6f5949 257 }
mbed_official 60:142c6c6f5949 258
mbed_official 402:09075a3b15e3 259 void gpio_irq_free(gpio_irq_t *obj)
mbed_official 402:09075a3b15e3 260 {
mbed_official 454:a07e52520545 261 gpio_channel_t *gpio_channel = &channels[obj->irq_index];
mbed_official 454:a07e52520545 262 uint32_t pin_index = STM_PIN(obj->pin);
mbed_official 454:a07e52520545 263 uint32_t gpio_idx = pin_base_nr[pin_index];
mbed_official 454:a07e52520545 264
mbed_official 454:a07e52520545 265 gpio_channel->pin_mask &= ~(1 << gpio_idx);
mbed_official 454:a07e52520545 266 gpio_channel->channel_ids[gpio_idx] = 0;
mbed_official 454:a07e52520545 267 gpio_channel->channel_gpio[gpio_idx] = 0;
mbed_official 454:a07e52520545 268 gpio_channel->channel_pin[gpio_idx] = 0;
mbed_official 454:a07e52520545 269
mbed_official 60:142c6c6f5949 270 // Disable EXTI line
mbed_official 489:119543c9f674 271 pin_function(obj->pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 60:142c6c6f5949 272 obj->event = EDGE_NONE;
mbed_official 60:142c6c6f5949 273 }
mbed_official 60:142c6c6f5949 274
mbed_official 402:09075a3b15e3 275 void gpio_irq_set(gpio_irq_t *obj, gpio_irq_event event, uint32_t enable)
mbed_official 402:09075a3b15e3 276 {
mbed_official 489:119543c9f674 277 uint32_t mode = STM_MODE_IT_EVT_RESET;
mbed_official 489:119543c9f674 278 uint32_t pull = GPIO_NOPULL;
mbed_official 174:8bb9f3a33240 279
mbed_official 331:098575c6d2c8 280 if (enable) {
mbed_official 331:098575c6d2c8 281 if (event == IRQ_RISE) {
mbed_official 331:098575c6d2c8 282 if ((obj->event == EDGE_FALL) || (obj->event == EDGE_BOTH)) {
mbed_official 489:119543c9f674 283 mode = STM_MODE_IT_RISING_FALLING;
mbed_official 331:098575c6d2c8 284 obj->event = EDGE_BOTH;
mbed_official 331:098575c6d2c8 285 } else { // NONE or RISE
mbed_official 489:119543c9f674 286 mode = STM_MODE_IT_RISING;
mbed_official 331:098575c6d2c8 287 obj->event = EDGE_RISE;
mbed_official 331:098575c6d2c8 288 }
mbed_official 331:098575c6d2c8 289 }
mbed_official 331:098575c6d2c8 290 if (event == IRQ_FALL) {
mbed_official 331:098575c6d2c8 291 if ((obj->event == EDGE_RISE) || (obj->event == EDGE_BOTH)) {
mbed_official 489:119543c9f674 292 mode = STM_MODE_IT_RISING_FALLING;
mbed_official 331:098575c6d2c8 293 obj->event = EDGE_BOTH;
mbed_official 331:098575c6d2c8 294 } else { // NONE or FALL
mbed_official 489:119543c9f674 295 mode = STM_MODE_IT_FALLING;
mbed_official 331:098575c6d2c8 296 obj->event = EDGE_FALL;
mbed_official 331:098575c6d2c8 297 }
mbed_official 60:142c6c6f5949 298 }
mbed_official 402:09075a3b15e3 299 } else { // Disable
mbed_official 331:098575c6d2c8 300 if (event == IRQ_RISE) {
mbed_official 331:098575c6d2c8 301 if ((obj->event == EDGE_FALL) || (obj->event == EDGE_BOTH)) {
mbed_official 489:119543c9f674 302 mode = STM_MODE_IT_FALLING;
mbed_official 331:098575c6d2c8 303 obj->event = EDGE_FALL;
mbed_official 331:098575c6d2c8 304 } else { // NONE or RISE
mbed_official 489:119543c9f674 305 mode = STM_MODE_IT_EVT_RESET;
mbed_official 331:098575c6d2c8 306 obj->event = EDGE_NONE;
mbed_official 331:098575c6d2c8 307 }
mbed_official 60:142c6c6f5949 308 }
mbed_official 331:098575c6d2c8 309 if (event == IRQ_FALL) {
mbed_official 331:098575c6d2c8 310 if ((obj->event == EDGE_RISE) || (obj->event == EDGE_BOTH)) {
mbed_official 489:119543c9f674 311 mode = STM_MODE_IT_RISING;
mbed_official 331:098575c6d2c8 312 obj->event = EDGE_RISE;
mbed_official 331:098575c6d2c8 313 } else { // NONE or FALL
mbed_official 489:119543c9f674 314 mode = STM_MODE_IT_EVT_RESET;
mbed_official 331:098575c6d2c8 315 obj->event = EDGE_NONE;
mbed_official 331:098575c6d2c8 316 }
mbed_official 402:09075a3b15e3 317 }
mbed_official 60:142c6c6f5949 318 }
mbed_official 174:8bb9f3a33240 319
mbed_official 489:119543c9f674 320 pin_function(obj->pin, STM_PIN_DATA(mode, pull, 0));
mbed_official 60:142c6c6f5949 321 }
mbed_official 60:142c6c6f5949 322
mbed_official 402:09075a3b15e3 323 void gpio_irq_enable(gpio_irq_t *obj)
mbed_official 402:09075a3b15e3 324 {
mbed_official 60:142c6c6f5949 325 NVIC_EnableIRQ(obj->irq_n);
mbed_official 60:142c6c6f5949 326 }
mbed_official 60:142c6c6f5949 327
mbed_official 402:09075a3b15e3 328 void gpio_irq_disable(gpio_irq_t *obj)
mbed_official 402:09075a3b15e3 329 {
mbed_official 60:142c6c6f5949 330 NVIC_DisableIRQ(obj->irq_n);
mbed_official 60:142c6c6f5949 331 obj->event = EDGE_NONE;
mbed_official 60:142c6c6f5949 332 }