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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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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_STM32F4/gpio_irq_api.c@635:a11c0372f0ba, 2015-09-30 (annotated)

Committer:
mbed_official
Date:
Wed Sep 30 17:00:09 2015 +0100
Revision:
635:a11c0372f0ba
Parent:
442:d916d321e60f 
Synchronized with git revision d29c98dae61be0946ddf3a3c641c7726056f9452



Full URL: https://github.com/mbedmicro/mbed/commit/d29c98dae61be0946ddf3a3c641c7726056f9452/



Added support for SAMW25

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 235:685d5f11838f 1 /* mbed Microcontroller Library
mbed_official 235:685d5f11838f 2 *******************************************************************************
mbed_official 235:685d5f11838f 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 235:685d5f11838f 4 * All rights reserved.
mbed_official 235:685d5f11838f 5 *
mbed_official 235:685d5f11838f 6 * Redistribution and use in source and binary forms, with or without
mbed_official 235:685d5f11838f 7 * modification, are permitted provided that the following conditions are met:
mbed_official 235:685d5f11838f 8 *
mbed_official 235:685d5f11838f 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 235:685d5f11838f 10 * this list of conditions and the following disclaimer.
mbed_official 235:685d5f11838f 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 235:685d5f11838f 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 235:685d5f11838f 13 * and/or other materials provided with the distribution.
mbed_official 235:685d5f11838f 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 235:685d5f11838f 15 * may be used to endorse or promote products derived from this software
mbed_official 235:685d5f11838f 16 * without specific prior written permission.
mbed_official 235:685d5f11838f 17 *
mbed_official 235:685d5f11838f 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 235:685d5f11838f 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 235:685d5f11838f 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 235:685d5f11838f 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 235:685d5f11838f 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 235:685d5f11838f 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 235:685d5f11838f 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 235:685d5f11838f 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 235:685d5f11838f 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 235:685d5f11838f 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 235:685d5f11838f 28 *******************************************************************************
mbed_official 235:685d5f11838f 29 */
mbed_official 235:685d5f11838f 30 #include <stddef.h>
mbed_official 235:685d5f11838f 31 #include "cmsis.h"
mbed_official 235:685d5f11838f 32 #include "gpio_irq_api.h"
mbed_official 235:685d5f11838f 33 #include "pinmap.h"
mbed_official 285:31249416b6f9 34 #include "mbed_error.h"
mbed_official 235:685d5f11838f 35
mbed_official 235:685d5f11838f 36 #define EDGE_NONE (0)
mbed_official 235:685d5f11838f 37 #define EDGE_RISE (1)
mbed_official 235:685d5f11838f 38 #define EDGE_FALL (2)
mbed_official 235:685d5f11838f 39 #define EDGE_BOTH (3)
mbed_official 235:685d5f11838f 40
mbed_official 413:ee28a0bed4ad 41 // Number of EXTI irq vectors (EXTI0, EXTI1, EXTI2, EXTI3, EXTI4, EXTI5_9, EXTI10_15)
mbed_official 235:685d5f11838f 42 #define CHANNEL_NUM (7)
mbed_official 235:685d5f11838f 43
mbed_official 413:ee28a0bed4ad 44 // Max pins for one line (max with EXTI10_15)
mbed_official 413:ee28a0bed4ad 45 #define MAX_PIN_LINE (6)
mbed_official 413:ee28a0bed4ad 46
mbed_official 413:ee28a0bed4ad 47 typedef struct gpio_channel {
mbed_official 413:ee28a0bed4ad 48 uint32_t pin_mask; // bitmask representing which pins are configured for receiving interrupts
mbed_official 413:ee28a0bed4ad 49 uint32_t channel_ids[MAX_PIN_LINE]; // mbed "gpio_irq_t gpio_irq" field of instance
mbed_official 413:ee28a0bed4ad 50 uint32_t channel_gpio[MAX_PIN_LINE]; // base address of gpio port group
mbed_official 413:ee28a0bed4ad 51 uint32_t channel_pin[MAX_PIN_LINE]; // pin number in port group
mbed_official 413:ee28a0bed4ad 52 } gpio_channel_t;
mbed_official 413:ee28a0bed4ad 53
mbed_official 413:ee28a0bed4ad 54 static gpio_channel_t channels[CHANNEL_NUM] = {
mbed_official 413:ee28a0bed4ad 55 {.pin_mask = 0},
mbed_official 413:ee28a0bed4ad 56 {.pin_mask = 0},
mbed_official 413:ee28a0bed4ad 57 {.pin_mask = 0},
mbed_official 413:ee28a0bed4ad 58 {.pin_mask = 0},
mbed_official 413:ee28a0bed4ad 59 {.pin_mask = 0},
mbed_official 413:ee28a0bed4ad 60 {.pin_mask = 0},
mbed_official 413:ee28a0bed4ad 61 {.pin_mask = 0}
mbed_official 413:ee28a0bed4ad 62 };
mbed_official 413:ee28a0bed4ad 63
mbed_official 413:ee28a0bed4ad 64 // Used to return the index for channels array.
mbed_official 413:ee28a0bed4ad 65 static uint32_t pin_base_nr[16] = {
mbed_official 413:ee28a0bed4ad 66 // EXTI0
mbed_official 413:ee28a0bed4ad 67 0, // pin 0
mbed_official 413:ee28a0bed4ad 68 // EXTI1
mbed_official 413:ee28a0bed4ad 69 0, // pin 1
mbed_official 413:ee28a0bed4ad 70 // EXTI2
mbed_official 413:ee28a0bed4ad 71 0, // pin 2
mbed_official 413:ee28a0bed4ad 72 // EXTI3
mbed_official 413:ee28a0bed4ad 73 0, // pin 3
mbed_official 413:ee28a0bed4ad 74 // EXTI4
mbed_official 413:ee28a0bed4ad 75 0, // pin 4
mbed_official 413:ee28a0bed4ad 76 // EXTI5_9
mbed_official 413:ee28a0bed4ad 77 0, // pin 5
mbed_official 413:ee28a0bed4ad 78 1, // pin 6
mbed_official 413:ee28a0bed4ad 79 2, // pin 7
mbed_official 413:ee28a0bed4ad 80 3, // pin 8
mbed_official 413:ee28a0bed4ad 81 4, // pin 9
mbed_official 413:ee28a0bed4ad 82 // EXTI10_15
mbed_official 413:ee28a0bed4ad 83 0, // pin 10
mbed_official 413:ee28a0bed4ad 84 1, // pin 11
mbed_official 413:ee28a0bed4ad 85 2, // pin 12
mbed_official 413:ee28a0bed4ad 86 3, // pin 13
mbed_official 413:ee28a0bed4ad 87 4, // pin 14
mbed_official 413:ee28a0bed4ad 88 5 // pin 15
mbed_official 413:ee28a0bed4ad 89 };
mbed_official 235:685d5f11838f 90
mbed_official 235:685d5f11838f 91 static gpio_irq_handler irq_handler;
mbed_official 235:685d5f11838f 92
mbed_official 413:ee28a0bed4ad 93 static void handle_interrupt_in(uint32_t irq_index, uint32_t max_num_pin_line)
mbed_official 235:685d5f11838f 94 {
mbed_official 413:ee28a0bed4ad 95 gpio_channel_t *gpio_channel = &channels[irq_index];
mbed_official 413:ee28a0bed4ad 96 uint32_t gpio_idx;
mbed_official 413:ee28a0bed4ad 97
mbed_official 413:ee28a0bed4ad 98 for (gpio_idx = 0; gpio_idx < max_num_pin_line; gpio_idx++) {
mbed_official 413:ee28a0bed4ad 99 uint32_t current_mask = (1 << gpio_idx);
mbed_official 413:ee28a0bed4ad 100
mbed_official 413:ee28a0bed4ad 101 if (gpio_channel->pin_mask & current_mask) {
mbed_official 413:ee28a0bed4ad 102 // Retrieve the gpio and pin that generate the irq
mbed_official 413:ee28a0bed4ad 103 GPIO_TypeDef *gpio = (GPIO_TypeDef *)(gpio_channel->channel_gpio[gpio_idx]);
mbed_official 413:ee28a0bed4ad 104 uint32_t pin = (uint32_t)(1 << (gpio_channel->channel_pin[gpio_idx]));
mbed_official 235:685d5f11838f 105
mbed_official 413:ee28a0bed4ad 106 // Clear interrupt flag
mbed_official 413:ee28a0bed4ad 107 if (__HAL_GPIO_EXTI_GET_FLAG(pin) != RESET) {
mbed_official 413:ee28a0bed4ad 108 __HAL_GPIO_EXTI_CLEAR_FLAG(pin);
mbed_official 413:ee28a0bed4ad 109
mbed_official 413:ee28a0bed4ad 110 if (gpio_channel->channel_ids[gpio_idx] == 0) continue;
mbed_official 235:685d5f11838f 111
mbed_official 413:ee28a0bed4ad 112 // Check which edge has generated the irq
mbed_official 413:ee28a0bed4ad 113 if ((gpio->IDR & pin) == 0) {
mbed_official 413:ee28a0bed4ad 114 irq_handler(gpio_channel->channel_ids[gpio_idx], IRQ_FALL);
mbed_official 413:ee28a0bed4ad 115 } else {
mbed_official 413:ee28a0bed4ad 116 irq_handler(gpio_channel->channel_ids[gpio_idx], IRQ_RISE);
mbed_official 413:ee28a0bed4ad 117 }
mbed_official 413:ee28a0bed4ad 118 }
mbed_official 413:ee28a0bed4ad 119 }
mbed_official 235:685d5f11838f 120 }
mbed_official 235:685d5f11838f 121 }
mbed_official 235:685d5f11838f 122
mbed_official 235:685d5f11838f 123 // EXTI line 0
mbed_official 235:685d5f11838f 124 static void gpio_irq0(void)
mbed_official 235:685d5f11838f 125 {
mbed_official 413:ee28a0bed4ad 126 handle_interrupt_in(0, 1);
mbed_official 235:685d5f11838f 127 }
mbed_official 413:ee28a0bed4ad 128
mbed_official 235:685d5f11838f 129 // EXTI line 1
mbed_official 235:685d5f11838f 130 static void gpio_irq1(void)
mbed_official 235:685d5f11838f 131 {
mbed_official 413:ee28a0bed4ad 132 handle_interrupt_in(1, 1);
mbed_official 235:685d5f11838f 133 }
mbed_official 413:ee28a0bed4ad 134
mbed_official 235:685d5f11838f 135 // EXTI line 2
mbed_official 235:685d5f11838f 136 static void gpio_irq2(void)
mbed_official 235:685d5f11838f 137 {
mbed_official 413:ee28a0bed4ad 138 handle_interrupt_in(2, 1);
mbed_official 235:685d5f11838f 139 }
mbed_official 413:ee28a0bed4ad 140
mbed_official 235:685d5f11838f 141 // EXTI line 3
mbed_official 235:685d5f11838f 142 static void gpio_irq3(void)
mbed_official 235:685d5f11838f 143 {
mbed_official 413:ee28a0bed4ad 144 handle_interrupt_in(3, 1);
mbed_official 235:685d5f11838f 145 }
mbed_official 413:ee28a0bed4ad 146
mbed_official 235:685d5f11838f 147 // EXTI line 4
mbed_official 235:685d5f11838f 148 static void gpio_irq4(void)
mbed_official 235:685d5f11838f 149 {
mbed_official 413:ee28a0bed4ad 150 handle_interrupt_in(4, 1);
mbed_official 235:685d5f11838f 151 }
mbed_official 413:ee28a0bed4ad 152
mbed_official 235:685d5f11838f 153 // EXTI lines 5 to 9
mbed_official 235:685d5f11838f 154 static void gpio_irq5(void)
mbed_official 235:685d5f11838f 155 {
mbed_official 413:ee28a0bed4ad 156 handle_interrupt_in(5, 5);
mbed_official 235:685d5f11838f 157 }
mbed_official 413:ee28a0bed4ad 158
mbed_official 235:685d5f11838f 159 // EXTI lines 10 to 15
mbed_official 235:685d5f11838f 160 static void gpio_irq6(void)
mbed_official 235:685d5f11838f 161 {
mbed_official 413:ee28a0bed4ad 162 handle_interrupt_in(6, 6);
mbed_official 235:685d5f11838f 163 }
mbed_official 235:685d5f11838f 164
mbed_official 235:685d5f11838f 165 extern uint32_t Set_GPIO_Clock(uint32_t port_idx);
mbed_official 235:685d5f11838f 166
mbed_official 235:685d5f11838f 167 int gpio_irq_init(gpio_irq_t *obj, PinName pin, gpio_irq_handler handler, uint32_t id)
mbed_official 235:685d5f11838f 168 {
mbed_official 235:685d5f11838f 169 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 235:685d5f11838f 170 uint32_t vector = 0;
mbed_official 235:685d5f11838f 171 uint32_t irq_index;
mbed_official 413:ee28a0bed4ad 172 gpio_channel_t *gpio_channel;
mbed_official 413:ee28a0bed4ad 173 uint32_t gpio_idx;
mbed_official 235:685d5f11838f 174
mbed_official 235:685d5f11838f 175 if (pin == NC) return -1;
mbed_official 235:685d5f11838f 176
mbed_official 235:685d5f11838f 177 uint32_t port_index = STM_PORT(pin);
mbed_official 235:685d5f11838f 178 uint32_t pin_index = STM_PIN(pin);
mbed_official 235:685d5f11838f 179
mbed_official 235:685d5f11838f 180 // Select irq number and interrupt routine
mbed_official 235:685d5f11838f 181 switch (pin_index) {
mbed_official 235:685d5f11838f 182 case 0:
mbed_official 235:685d5f11838f 183 irq_n = EXTI0_IRQn;
mbed_official 235:685d5f11838f 184 vector = (uint32_t)&gpio_irq0;
mbed_official 235:685d5f11838f 185 irq_index = 0;
mbed_official 235:685d5f11838f 186 break;
mbed_official 235:685d5f11838f 187 case 1:
mbed_official 235:685d5f11838f 188 irq_n = EXTI1_IRQn;
mbed_official 235:685d5f11838f 189 vector = (uint32_t)&gpio_irq1;
mbed_official 235:685d5f11838f 190 irq_index = 1;
mbed_official 235:685d5f11838f 191 break;
mbed_official 235:685d5f11838f 192 case 2:
mbed_official 235:685d5f11838f 193 irq_n = EXTI2_IRQn;
mbed_official 235:685d5f11838f 194 vector = (uint32_t)&gpio_irq2;
mbed_official 235:685d5f11838f 195 irq_index = 2;
mbed_official 235:685d5f11838f 196 break;
mbed_official 235:685d5f11838f 197 case 3:
mbed_official 235:685d5f11838f 198 irq_n = EXTI3_IRQn;
mbed_official 235:685d5f11838f 199 vector = (uint32_t)&gpio_irq3;
mbed_official 235:685d5f11838f 200 irq_index = 3;
mbed_official 235:685d5f11838f 201 break;
mbed_official 235:685d5f11838f 202 case 4:
mbed_official 235:685d5f11838f 203 irq_n = EXTI4_IRQn;
mbed_official 235:685d5f11838f 204 vector = (uint32_t)&gpio_irq4;
mbed_official 235:685d5f11838f 205 irq_index = 4;
mbed_official 235:685d5f11838f 206 break;
mbed_official 235:685d5f11838f 207 case 5:
mbed_official 235:685d5f11838f 208 case 6:
mbed_official 235:685d5f11838f 209 case 7:
mbed_official 235:685d5f11838f 210 case 8:
mbed_official 235:685d5f11838f 211 case 9:
mbed_official 235:685d5f11838f 212 irq_n = EXTI9_5_IRQn;
mbed_official 235:685d5f11838f 213 vector = (uint32_t)&gpio_irq5;
mbed_official 235:685d5f11838f 214 irq_index = 5;
mbed_official 235:685d5f11838f 215 break;
mbed_official 235:685d5f11838f 216 case 10:
mbed_official 235:685d5f11838f 217 case 11:
mbed_official 235:685d5f11838f 218 case 12:
mbed_official 235:685d5f11838f 219 case 13:
mbed_official 235:685d5f11838f 220 case 14:
mbed_official 235:685d5f11838f 221 case 15:
mbed_official 235:685d5f11838f 222 irq_n = EXTI15_10_IRQn;
mbed_official 235:685d5f11838f 223 vector = (uint32_t)&gpio_irq6;
mbed_official 235:685d5f11838f 224 irq_index = 6;
mbed_official 235:685d5f11838f 225 break;
mbed_official 235:685d5f11838f 226 default:
mbed_official 235:685d5f11838f 227 error("InterruptIn error: pin not supported.\n");
mbed_official 235:685d5f11838f 228 return -1;
mbed_official 235:685d5f11838f 229 }
mbed_official 235:685d5f11838f 230
mbed_official 235:685d5f11838f 231 // Enable GPIO clock
mbed_official 235:685d5f11838f 232 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 235:685d5f11838f 233
mbed_official 235:685d5f11838f 234 // Configure GPIO
mbed_official 235:685d5f11838f 235 pin_function(pin, STM_PIN_DATA(STM_MODE_IT_FALLING, GPIO_NOPULL, 0));
mbed_official 235:685d5f11838f 236
mbed_official 235:685d5f11838f 237 // Enable EXTI interrupt
mbed_official 235:685d5f11838f 238 NVIC_SetVector(irq_n, vector);
mbed_official 235:685d5f11838f 239 NVIC_EnableIRQ(irq_n);
mbed_official 235:685d5f11838f 240
mbed_official 235:685d5f11838f 241 // Save informations for future use
mbed_official 235:685d5f11838f 242 obj->irq_n = irq_n;
mbed_official 235:685d5f11838f 243 obj->irq_index = irq_index;
mbed_official 235:685d5f11838f 244 obj->event = EDGE_NONE;
mbed_official 235:685d5f11838f 245 obj->pin = pin;
mbed_official 413:ee28a0bed4ad 246
mbed_official 413:ee28a0bed4ad 247 gpio_channel = &channels[irq_index];
mbed_official 413:ee28a0bed4ad 248 gpio_idx = pin_base_nr[pin_index];
mbed_official 413:ee28a0bed4ad 249 gpio_channel->pin_mask |= (1 << gpio_idx);
mbed_official 413:ee28a0bed4ad 250 gpio_channel->channel_ids[gpio_idx] = id;
mbed_official 413:ee28a0bed4ad 251 gpio_channel->channel_gpio[gpio_idx] = gpio_add;
mbed_official 413:ee28a0bed4ad 252 gpio_channel->channel_pin[gpio_idx] = pin_index;
mbed_official 235:685d5f11838f 253
mbed_official 235:685d5f11838f 254 irq_handler = handler;
mbed_official 235:685d5f11838f 255
mbed_official 235:685d5f11838f 256 return 0;
mbed_official 235:685d5f11838f 257 }
mbed_official 235:685d5f11838f 258
mbed_official 235:685d5f11838f 259 void gpio_irq_free(gpio_irq_t *obj)
mbed_official 235:685d5f11838f 260 {
mbed_official 413:ee28a0bed4ad 261 gpio_channel_t *gpio_channel = &channels[obj->irq_index];
mbed_official 413:ee28a0bed4ad 262 uint32_t pin_index = STM_PIN(obj->pin);
mbed_official 413:ee28a0bed4ad 263 uint32_t gpio_idx = pin_base_nr[pin_index];
mbed_official 413:ee28a0bed4ad 264
mbed_official 413:ee28a0bed4ad 265 gpio_channel->pin_mask &= ~(1 << gpio_idx);
mbed_official 413:ee28a0bed4ad 266 gpio_channel->channel_ids[gpio_idx] = 0;
mbed_official 413:ee28a0bed4ad 267 gpio_channel->channel_gpio[gpio_idx] = 0;
mbed_official 413:ee28a0bed4ad 268 gpio_channel->channel_pin[gpio_idx] = 0;
mbed_official 413:ee28a0bed4ad 269
mbed_official 235:685d5f11838f 270 // Disable EXTI line
mbed_official 235:685d5f11838f 271 pin_function(obj->pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 235:685d5f11838f 272 obj->event = EDGE_NONE;
mbed_official 235:685d5f11838f 273 }
mbed_official 235:685d5f11838f 274
mbed_official 235:685d5f11838f 275 void gpio_irq_set(gpio_irq_t *obj, gpio_irq_event event, uint32_t enable)
mbed_official 235:685d5f11838f 276 {
mbed_official 413:ee28a0bed4ad 277 uint32_t mode = STM_MODE_IT_EVT_RESET;
mbed_official 235:685d5f11838f 278 uint32_t pull = GPIO_NOPULL;
mbed_official 235:685d5f11838f 279
mbed_official 235:685d5f11838f 280 if (enable) {
mbed_official 235:685d5f11838f 281 if (event == IRQ_RISE) {
mbed_official 235:685d5f11838f 282 if ((obj->event == EDGE_FALL) || (obj->event == EDGE_BOTH)) {
mbed_official 235:685d5f11838f 283 mode = STM_MODE_IT_RISING_FALLING;
mbed_official 235:685d5f11838f 284 obj->event = EDGE_BOTH;
mbed_official 235:685d5f11838f 285 } else { // NONE or RISE
mbed_official 235:685d5f11838f 286 mode = STM_MODE_IT_RISING;
mbed_official 235:685d5f11838f 287 obj->event = EDGE_RISE;
mbed_official 235:685d5f11838f 288 }
mbed_official 235:685d5f11838f 289 }
mbed_official 235:685d5f11838f 290 if (event == IRQ_FALL) {
mbed_official 235:685d5f11838f 291 if ((obj->event == EDGE_RISE) || (obj->event == EDGE_BOTH)) {
mbed_official 235:685d5f11838f 292 mode = STM_MODE_IT_RISING_FALLING;
mbed_official 235:685d5f11838f 293 obj->event = EDGE_BOTH;
mbed_official 235:685d5f11838f 294 } else { // NONE or FALL
mbed_official 235:685d5f11838f 295 mode = STM_MODE_IT_FALLING;
mbed_official 235:685d5f11838f 296 obj->event = EDGE_FALL;
mbed_official 235:685d5f11838f 297 }
mbed_official 235:685d5f11838f 298 }
mbed_official 413:ee28a0bed4ad 299 } else { // Disable
mbed_official 327:a7562ccfb9d5 300 if (event == IRQ_RISE) {
mbed_official 327:a7562ccfb9d5 301 if ((obj->event == EDGE_FALL) || (obj->event == EDGE_BOTH)) {
mbed_official 327:a7562ccfb9d5 302 mode = STM_MODE_IT_FALLING;
mbed_official 327:a7562ccfb9d5 303 obj->event = EDGE_FALL;
mbed_official 413:ee28a0bed4ad 304 } else { // NONE or RISE
mbed_official 327:a7562ccfb9d5 305 mode = STM_MODE_IT_EVT_RESET;
mbed_official 327:a7562ccfb9d5 306 obj->event = EDGE_NONE;
mbed_official 327:a7562ccfb9d5 307 }
mbed_official 413:ee28a0bed4ad 308 }
mbed_official 413:ee28a0bed4ad 309 if (event == IRQ_FALL) {
mbed_official 327:a7562ccfb9d5 310 if ((obj->event == EDGE_RISE) || (obj->event == EDGE_BOTH)) {
mbed_official 327:a7562ccfb9d5 311 mode = STM_MODE_IT_RISING;
mbed_official 327:a7562ccfb9d5 312 obj->event = EDGE_RISE;
mbed_official 413:ee28a0bed4ad 313 } else { // NONE or FALL
mbed_official 327:a7562ccfb9d5 314 mode = STM_MODE_IT_EVT_RESET;
mbed_official 327:a7562ccfb9d5 315 obj->event = EDGE_NONE;
mbed_official 327:a7562ccfb9d5 316 }
mbed_official 327:a7562ccfb9d5 317 }
mbed_official 235:685d5f11838f 318 }
mbed_official 235:685d5f11838f 319
mbed_official 235:685d5f11838f 320 pin_function(obj->pin, STM_PIN_DATA(mode, pull, 0));
mbed_official 235:685d5f11838f 321 }
mbed_official 235:685d5f11838f 322
mbed_official 235:685d5f11838f 323 void gpio_irq_enable(gpio_irq_t *obj)
mbed_official 235:685d5f11838f 324 {
mbed_official 235:685d5f11838f 325 NVIC_EnableIRQ(obj->irq_n);
mbed_official 235:685d5f11838f 326 }
mbed_official 235:685d5f11838f 327
mbed_official 235:685d5f11838f 328 void gpio_irq_disable(gpio_irq_t *obj)
mbed_official 235:685d5f11838f 329 {
mbed_official 235:685d5f11838f 330 NVIC_DisableIRQ(obj->irq_n);
mbed_official 235:685d5f11838f 331 obj->event = EDGE_NONE;
mbed_official 235:685d5f11838f 332 }