Gan likun / mbed1-dev

001

targets/TARGET_STM/gpio_irq_api.c@0:13413ea9a877, 2022-06-12 (annotated)

Committer:
ganlikun
Date:
Sun Jun 12 14:02:44 2022 +0000
Revision:
0:13413ea9a877
00

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ganlikun 0:13413ea9a877 1 /* mbed Microcontroller Library
ganlikun 0:13413ea9a877 2 *******************************************************************************
ganlikun 0:13413ea9a877 3 * Copyright (c) 2014, STMicroelectronics
ganlikun 0:13413ea9a877 4 * All rights reserved.
ganlikun 0:13413ea9a877 5 *
ganlikun 0:13413ea9a877 6 * Redistribution and use in source and binary forms, with or without
ganlikun 0:13413ea9a877 7 * modification, are permitted provided that the following conditions are met:
ganlikun 0:13413ea9a877 8 *
ganlikun 0:13413ea9a877 9 * 1. Redistributions of source code must retain the above copyright notice,
ganlikun 0:13413ea9a877 10 * this list of conditions and the following disclaimer.
ganlikun 0:13413ea9a877 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
ganlikun 0:13413ea9a877 12 * this list of conditions and the following disclaimer in the documentation
ganlikun 0:13413ea9a877 13 * and/or other materials provided with the distribution.
ganlikun 0:13413ea9a877 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
ganlikun 0:13413ea9a877 15 * may be used to endorse or promote products derived from this software
ganlikun 0:13413ea9a877 16 * without specific prior written permission.
ganlikun 0:13413ea9a877 17 *
ganlikun 0:13413ea9a877 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
ganlikun 0:13413ea9a877 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
ganlikun 0:13413ea9a877 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
ganlikun 0:13413ea9a877 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
ganlikun 0:13413ea9a877 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
ganlikun 0:13413ea9a877 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
ganlikun 0:13413ea9a877 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
ganlikun 0:13413ea9a877 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
ganlikun 0:13413ea9a877 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
ganlikun 0:13413ea9a877 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
ganlikun 0:13413ea9a877 28 *******************************************************************************
ganlikun 0:13413ea9a877 29 */
ganlikun 0:13413ea9a877 30 #include <stddef.h>
ganlikun 0:13413ea9a877 31 #include "cmsis.h"
ganlikun 0:13413ea9a877 32 #include "gpio_irq_api.h"
ganlikun 0:13413ea9a877 33 #include "pinmap.h"
ganlikun 0:13413ea9a877 34 #include "mbed_error.h"
ganlikun 0:13413ea9a877 35 #include "gpio_irq_device.h"
ganlikun 0:13413ea9a877 36
ganlikun 0:13413ea9a877 37 #define EDGE_NONE (0)
ganlikun 0:13413ea9a877 38 #define EDGE_RISE (1)
ganlikun 0:13413ea9a877 39 #define EDGE_FALL (2)
ganlikun 0:13413ea9a877 40 #define EDGE_BOTH (3)
ganlikun 0:13413ea9a877 41
ganlikun 0:13413ea9a877 42
ganlikun 0:13413ea9a877 43 typedef struct gpio_channel {
ganlikun 0:13413ea9a877 44 uint32_t pin_mask; // bitmask representing which pins are configured for receiving interrupts
ganlikun 0:13413ea9a877 45 uint32_t channel_ids[MAX_PIN_LINE]; // mbed "gpio_irq_t gpio_irq" field of instance
ganlikun 0:13413ea9a877 46 GPIO_TypeDef* channel_gpio[MAX_PIN_LINE]; // base address of gpio port group
ganlikun 0:13413ea9a877 47 uint32_t channel_pin[MAX_PIN_LINE]; // pin number in port group
ganlikun 0:13413ea9a877 48 } gpio_channel_t;
ganlikun 0:13413ea9a877 49
ganlikun 0:13413ea9a877 50 static gpio_irq_handler irq_handler;
ganlikun 0:13413ea9a877 51
ganlikun 0:13413ea9a877 52 static gpio_channel_t channels[CHANNEL_NUM] = {
ganlikun 0:13413ea9a877 53 #ifdef EXTI_IRQ0_NUM_LINES
ganlikun 0:13413ea9a877 54 {.pin_mask = 0},
ganlikun 0:13413ea9a877 55 #endif
ganlikun 0:13413ea9a877 56 #ifdef EXTI_IRQ1_NUM_LINES
ganlikun 0:13413ea9a877 57 {.pin_mask = 0},
ganlikun 0:13413ea9a877 58 #endif
ganlikun 0:13413ea9a877 59 #ifdef EXTI_IRQ2_NUM_LINES
ganlikun 0:13413ea9a877 60 {.pin_mask = 0},
ganlikun 0:13413ea9a877 61 #endif
ganlikun 0:13413ea9a877 62 #ifdef EXTI_IRQ3_NUM_LINES
ganlikun 0:13413ea9a877 63 {.pin_mask = 0},
ganlikun 0:13413ea9a877 64 #endif
ganlikun 0:13413ea9a877 65 #ifdef EXTI_IRQ4_NUM_LINES
ganlikun 0:13413ea9a877 66 {.pin_mask = 0},
ganlikun 0:13413ea9a877 67 #endif
ganlikun 0:13413ea9a877 68 #ifdef EXTI_IRQ5_NUM_LINES
ganlikun 0:13413ea9a877 69 {.pin_mask = 0},
ganlikun 0:13413ea9a877 70 #endif
ganlikun 0:13413ea9a877 71 #ifdef EXTI_IRQ6_NUM_LINES
ganlikun 0:13413ea9a877 72 {.pin_mask = 0}
ganlikun 0:13413ea9a877 73 #endif
ganlikun 0:13413ea9a877 74 };
ganlikun 0:13413ea9a877 75
ganlikun 0:13413ea9a877 76 static void handle_interrupt_in(uint32_t irq_index, uint32_t max_num_pin_line)
ganlikun 0:13413ea9a877 77 {
ganlikun 0:13413ea9a877 78 gpio_channel_t *gpio_channel = &channels[irq_index];
ganlikun 0:13413ea9a877 79 uint32_t gpio_idx;
ganlikun 0:13413ea9a877 80
ganlikun 0:13413ea9a877 81 for (gpio_idx = 0; gpio_idx < max_num_pin_line; gpio_idx++) {
ganlikun 0:13413ea9a877 82 uint32_t current_mask = (1 << gpio_idx);
ganlikun 0:13413ea9a877 83
ganlikun 0:13413ea9a877 84 if (gpio_channel->pin_mask & current_mask) {
ganlikun 0:13413ea9a877 85 // Retrieve the gpio and pin that generate the irq
ganlikun 0:13413ea9a877 86 GPIO_TypeDef *gpio = (GPIO_TypeDef *)(gpio_channel->channel_gpio[gpio_idx]);
ganlikun 0:13413ea9a877 87 uint32_t pin = (uint32_t)(1 << (gpio_channel->channel_pin[gpio_idx]));
ganlikun 0:13413ea9a877 88
ganlikun 0:13413ea9a877 89 // Clear interrupt flag
ganlikun 0:13413ea9a877 90 if (__HAL_GPIO_EXTI_GET_FLAG(pin) != RESET) {
ganlikun 0:13413ea9a877 91 __HAL_GPIO_EXTI_CLEAR_FLAG(pin);
ganlikun 0:13413ea9a877 92
ganlikun 0:13413ea9a877 93 if (gpio_channel->channel_ids[gpio_idx] == 0) {
ganlikun 0:13413ea9a877 94 continue;
ganlikun 0:13413ea9a877 95 }
ganlikun 0:13413ea9a877 96
ganlikun 0:13413ea9a877 97 // Check which edge has generated the irq
ganlikun 0:13413ea9a877 98 if ((gpio->IDR & pin) == 0) {
ganlikun 0:13413ea9a877 99 irq_handler(gpio_channel->channel_ids[gpio_idx], IRQ_FALL);
ganlikun 0:13413ea9a877 100 } else {
ganlikun 0:13413ea9a877 101 irq_handler(gpio_channel->channel_ids[gpio_idx], IRQ_RISE);
ganlikun 0:13413ea9a877 102 }
ganlikun 0:13413ea9a877 103 return;
ganlikun 0:13413ea9a877 104 }
ganlikun 0:13413ea9a877 105 }
ganlikun 0:13413ea9a877 106 }
ganlikun 0:13413ea9a877 107 error("Unexpected Spurious interrupt, index %d\r\n", irq_index);
ganlikun 0:13413ea9a877 108 }
ganlikun 0:13413ea9a877 109
ganlikun 0:13413ea9a877 110
ganlikun 0:13413ea9a877 111 #ifdef EXTI_IRQ0_NUM_LINES
ganlikun 0:13413ea9a877 112 // EXTI line 0
ganlikun 0:13413ea9a877 113 static void gpio_irq0(void)
ganlikun 0:13413ea9a877 114 {
ganlikun 0:13413ea9a877 115 handle_interrupt_in(0, EXTI_IRQ0_NUM_LINES);
ganlikun 0:13413ea9a877 116 }
ganlikun 0:13413ea9a877 117 #endif
ganlikun 0:13413ea9a877 118 #ifdef EXTI_IRQ1_NUM_LINES
ganlikun 0:13413ea9a877 119 // EXTI line 1
ganlikun 0:13413ea9a877 120 static void gpio_irq1(void)
ganlikun 0:13413ea9a877 121 {
ganlikun 0:13413ea9a877 122 handle_interrupt_in(1, EXTI_IRQ1_NUM_LINES);
ganlikun 0:13413ea9a877 123 }
ganlikun 0:13413ea9a877 124 #endif
ganlikun 0:13413ea9a877 125 #ifdef EXTI_IRQ2_NUM_LINES
ganlikun 0:13413ea9a877 126 // EXTI line 2
ganlikun 0:13413ea9a877 127 static void gpio_irq2(void)
ganlikun 0:13413ea9a877 128 {
ganlikun 0:13413ea9a877 129 handle_interrupt_in(2, EXTI_IRQ2_NUM_LINES);
ganlikun 0:13413ea9a877 130 }
ganlikun 0:13413ea9a877 131 #endif
ganlikun 0:13413ea9a877 132 #ifdef EXTI_IRQ3_NUM_LINES
ganlikun 0:13413ea9a877 133 // EXTI line 3
ganlikun 0:13413ea9a877 134 static void gpio_irq3(void)
ganlikun 0:13413ea9a877 135 {
ganlikun 0:13413ea9a877 136 handle_interrupt_in(3, EXTI_IRQ3_NUM_LINES);
ganlikun 0:13413ea9a877 137 }
ganlikun 0:13413ea9a877 138 #endif
ganlikun 0:13413ea9a877 139 #ifdef EXTI_IRQ4_NUM_LINES
ganlikun 0:13413ea9a877 140 // EXTI line 4
ganlikun 0:13413ea9a877 141 static void gpio_irq4(void)
ganlikun 0:13413ea9a877 142 {
ganlikun 0:13413ea9a877 143 handle_interrupt_in(4, EXTI_IRQ4_NUM_LINES);
ganlikun 0:13413ea9a877 144 }
ganlikun 0:13413ea9a877 145 #endif
ganlikun 0:13413ea9a877 146 #ifdef EXTI_IRQ5_NUM_LINES
ganlikun 0:13413ea9a877 147 // EXTI lines 5 to 9
ganlikun 0:13413ea9a877 148 static void gpio_irq5(void)
ganlikun 0:13413ea9a877 149 {
ganlikun 0:13413ea9a877 150 handle_interrupt_in(5, EXTI_IRQ5_NUM_LINES);
ganlikun 0:13413ea9a877 151 }
ganlikun 0:13413ea9a877 152 #endif
ganlikun 0:13413ea9a877 153 #ifdef EXTI_IRQ6_NUM_LINES
ganlikun 0:13413ea9a877 154 // EXTI lines 10 to 15
ganlikun 0:13413ea9a877 155 static void gpio_irq6(void)
ganlikun 0:13413ea9a877 156 {
ganlikun 0:13413ea9a877 157 handle_interrupt_in(6, EXTI_IRQ6_NUM_LINES);
ganlikun 0:13413ea9a877 158 }
ganlikun 0:13413ea9a877 159 #endif
ganlikun 0:13413ea9a877 160
ganlikun 0:13413ea9a877 161 extern GPIO_TypeDef *Set_GPIO_Clock(uint32_t port_idx);
ganlikun 0:13413ea9a877 162 extern void pin_function_gpiomode(PinName pin, uint32_t gpiomode);
ganlikun 0:13413ea9a877 163
ganlikun 0:13413ea9a877 164 int gpio_irq_init(gpio_irq_t *obj, PinName pin, gpio_irq_handler handler, uint32_t id)
ganlikun 0:13413ea9a877 165 {
ganlikun 0:13413ea9a877 166 uint32_t vector = 0;
ganlikun 0:13413ea9a877 167 uint32_t irq_index;
ganlikun 0:13413ea9a877 168 gpio_channel_t *gpio_channel;
ganlikun 0:13413ea9a877 169 uint32_t gpio_idx;
ganlikun 0:13413ea9a877 170
ganlikun 0:13413ea9a877 171 if (pin == NC) return -1;
ganlikun 0:13413ea9a877 172
ganlikun 0:13413ea9a877 173 /* Enable SYSCFG Clock */
ganlikun 0:13413ea9a877 174 __HAL_RCC_SYSCFG_CLK_ENABLE();
ganlikun 0:13413ea9a877 175
ganlikun 0:13413ea9a877 176 uint32_t port_index = STM_PORT(pin);
ganlikun 0:13413ea9a877 177 uint32_t pin_index = STM_PIN(pin);
ganlikun 0:13413ea9a877 178 irq_index = pin_lines_desc[pin_index].irq_index;
ganlikun 0:13413ea9a877 179
ganlikun 0:13413ea9a877 180 switch (irq_index) {
ganlikun 0:13413ea9a877 181 #ifdef EXTI_IRQ0_NUM_LINES
ganlikun 0:13413ea9a877 182 case 0:
ganlikun 0:13413ea9a877 183 vector = (uint32_t)&gpio_irq0;
ganlikun 0:13413ea9a877 184 break;
ganlikun 0:13413ea9a877 185 #endif
ganlikun 0:13413ea9a877 186 #ifdef EXTI_IRQ1_NUM_LINES
ganlikun 0:13413ea9a877 187 case 1:
ganlikun 0:13413ea9a877 188 vector = (uint32_t)&gpio_irq1;
ganlikun 0:13413ea9a877 189 break;
ganlikun 0:13413ea9a877 190 #endif
ganlikun 0:13413ea9a877 191 #ifdef EXTI_IRQ2_NUM_LINES
ganlikun 0:13413ea9a877 192 case 2:
ganlikun 0:13413ea9a877 193 vector = (uint32_t)&gpio_irq2;
ganlikun 0:13413ea9a877 194 break;
ganlikun 0:13413ea9a877 195 #endif
ganlikun 0:13413ea9a877 196 #ifdef EXTI_IRQ3_NUM_LINES
ganlikun 0:13413ea9a877 197 case 3:
ganlikun 0:13413ea9a877 198 vector = (uint32_t)&gpio_irq3;
ganlikun 0:13413ea9a877 199 break;
ganlikun 0:13413ea9a877 200 #endif
ganlikun 0:13413ea9a877 201 #ifdef EXTI_IRQ4_NUM_LINES
ganlikun 0:13413ea9a877 202 case 4:
ganlikun 0:13413ea9a877 203 vector = (uint32_t)&gpio_irq4;
ganlikun 0:13413ea9a877 204 break;
ganlikun 0:13413ea9a877 205 #endif
ganlikun 0:13413ea9a877 206 #ifdef EXTI_IRQ5_NUM_LINES
ganlikun 0:13413ea9a877 207 case 5:
ganlikun 0:13413ea9a877 208 vector = (uint32_t)&gpio_irq5;
ganlikun 0:13413ea9a877 209 break;
ganlikun 0:13413ea9a877 210 #endif
ganlikun 0:13413ea9a877 211 #ifdef EXTI_IRQ6_NUM_LINES
ganlikun 0:13413ea9a877 212 case 6:
ganlikun 0:13413ea9a877 213 vector = (uint32_t)&gpio_irq6;
ganlikun 0:13413ea9a877 214 break;
ganlikun 0:13413ea9a877 215 #endif
ganlikun 0:13413ea9a877 216 default:
ganlikun 0:13413ea9a877 217 error("InterruptIn error: pin not supported.\n");
ganlikun 0:13413ea9a877 218 return -1;
ganlikun 0:13413ea9a877 219 }
ganlikun 0:13413ea9a877 220
ganlikun 0:13413ea9a877 221 // Enable GPIO clock
ganlikun 0:13413ea9a877 222 GPIO_TypeDef *gpio_add = Set_GPIO_Clock(port_index);
ganlikun 0:13413ea9a877 223
ganlikun 0:13413ea9a877 224 // Save informations for future use
ganlikun 0:13413ea9a877 225 obj->irq_n = pin_lines_desc[pin_index].irq_n;
ganlikun 0:13413ea9a877 226 obj->irq_index = pin_lines_desc[pin_index].irq_index;
ganlikun 0:13413ea9a877 227 obj->event = EDGE_NONE;
ganlikun 0:13413ea9a877 228 obj->pin = pin;
ganlikun 0:13413ea9a877 229
ganlikun 0:13413ea9a877 230 gpio_channel = &channels[irq_index];
ganlikun 0:13413ea9a877 231 gpio_idx = pin_lines_desc[pin_index].gpio_idx;
ganlikun 0:13413ea9a877 232 gpio_channel->pin_mask |= (1 << gpio_idx);
ganlikun 0:13413ea9a877 233 gpio_channel->channel_ids[gpio_idx] = id;
ganlikun 0:13413ea9a877 234 gpio_channel->channel_gpio[gpio_idx] = gpio_add;
ganlikun 0:13413ea9a877 235 gpio_channel->channel_pin[gpio_idx] = pin_index;
ganlikun 0:13413ea9a877 236
ganlikun 0:13413ea9a877 237 irq_handler = handler;
ganlikun 0:13413ea9a877 238
ganlikun 0:13413ea9a877 239 // Enable EXTI interrupt
ganlikun 0:13413ea9a877 240 NVIC_SetVector(obj->irq_n, vector);
ganlikun 0:13413ea9a877 241 gpio_irq_enable(obj);
ganlikun 0:13413ea9a877 242
ganlikun 0:13413ea9a877 243 return 0;
ganlikun 0:13413ea9a877 244 }
ganlikun 0:13413ea9a877 245
ganlikun 0:13413ea9a877 246 void gpio_irq_free(gpio_irq_t *obj)
ganlikun 0:13413ea9a877 247 {
ganlikun 0:13413ea9a877 248 uint32_t gpio_idx = pin_lines_desc[STM_PIN(obj->pin)].gpio_idx;
ganlikun 0:13413ea9a877 249 gpio_channel_t *gpio_channel = &channels[obj->irq_index];
ganlikun 0:13413ea9a877 250
ganlikun 0:13413ea9a877 251 gpio_irq_disable(obj);
ganlikun 0:13413ea9a877 252 gpio_channel->pin_mask &= ~(1 << gpio_idx);
ganlikun 0:13413ea9a877 253 gpio_channel->channel_ids[gpio_idx] = 0;
ganlikun 0:13413ea9a877 254 gpio_channel->channel_gpio[gpio_idx] = 0;
ganlikun 0:13413ea9a877 255 gpio_channel->channel_pin[gpio_idx] = 0;
ganlikun 0:13413ea9a877 256 }
ganlikun 0:13413ea9a877 257
ganlikun 0:13413ea9a877 258 void gpio_irq_set(gpio_irq_t *obj, gpio_irq_event event, uint32_t enable)
ganlikun 0:13413ea9a877 259 {
ganlikun 0:13413ea9a877 260 /* Enable / Disable Edge triggered interrupt and store event */
ganlikun 0:13413ea9a877 261 if (event == IRQ_RISE) {
ganlikun 0:13413ea9a877 262 if (enable) {
ganlikun 0:13413ea9a877 263 LL_EXTI_EnableRisingTrig_0_31(1 << STM_PIN(obj->pin));
ganlikun 0:13413ea9a877 264 obj->event |= IRQ_RISE;
ganlikun 0:13413ea9a877 265 } else {
ganlikun 0:13413ea9a877 266 LL_EXTI_DisableRisingTrig_0_31(1 << STM_PIN(obj->pin));
ganlikun 0:13413ea9a877 267 obj->event &= ~IRQ_RISE;
ganlikun 0:13413ea9a877 268 }
ganlikun 0:13413ea9a877 269 }
ganlikun 0:13413ea9a877 270 if (event == IRQ_FALL) {
ganlikun 0:13413ea9a877 271 if (enable) {
ganlikun 0:13413ea9a877 272 LL_EXTI_EnableFallingTrig_0_31(1 << STM_PIN(obj->pin));
ganlikun 0:13413ea9a877 273 obj->event |= IRQ_FALL;
ganlikun 0:13413ea9a877 274 } else {
ganlikun 0:13413ea9a877 275 LL_EXTI_DisableFallingTrig_0_31(1 << STM_PIN(obj->pin));
ganlikun 0:13413ea9a877 276 obj->event &= ~IRQ_FALL;
ganlikun 0:13413ea9a877 277 }
ganlikun 0:13413ea9a877 278 }
ganlikun 0:13413ea9a877 279 }
ganlikun 0:13413ea9a877 280
ganlikun 0:13413ea9a877 281 void gpio_irq_enable(gpio_irq_t *obj)
ganlikun 0:13413ea9a877 282 {
ganlikun 0:13413ea9a877 283 uint32_t temp = 0;
ganlikun 0:13413ea9a877 284 uint32_t port_index = STM_PORT(obj->pin);
ganlikun 0:13413ea9a877 285 uint32_t pin_index = STM_PIN(obj->pin);
ganlikun 0:13413ea9a877 286
ganlikun 0:13413ea9a877 287 /* Select Source */
ganlikun 0:13413ea9a877 288 temp = SYSCFG->EXTICR[pin_index >> 2];
ganlikun 0:13413ea9a877 289 CLEAR_BIT(temp, (0x0FU) << (4U * (pin_index & 0x03U)));
ganlikun 0:13413ea9a877 290 SET_BIT(temp, port_index << (4U * (pin_index & 0x03U)));
ganlikun 0:13413ea9a877 291 SYSCFG->EXTICR[pin_index >> 2] = temp;
ganlikun 0:13413ea9a877 292
ganlikun 0:13413ea9a877 293 LL_EXTI_EnableIT_0_31(1 << pin_index);
ganlikun 0:13413ea9a877 294
ganlikun 0:13413ea9a877 295 /* Restore previous edge interrupt configuration if applicable */
ganlikun 0:13413ea9a877 296 if (obj->event & IRQ_RISE) {
ganlikun 0:13413ea9a877 297 LL_EXTI_EnableRisingTrig_0_31(1 << STM_PIN(obj->pin));
ganlikun 0:13413ea9a877 298 }
ganlikun 0:13413ea9a877 299 if (obj->event & IRQ_FALL) {
ganlikun 0:13413ea9a877 300 LL_EXTI_EnableFallingTrig_0_31(1 << STM_PIN(obj->pin));
ganlikun 0:13413ea9a877 301 }
ganlikun 0:13413ea9a877 302
ganlikun 0:13413ea9a877 303 NVIC_EnableIRQ(obj->irq_n);
ganlikun 0:13413ea9a877 304 }
ganlikun 0:13413ea9a877 305
ganlikun 0:13413ea9a877 306 void gpio_irq_disable(gpio_irq_t *obj)
ganlikun 0:13413ea9a877 307 {
ganlikun 0:13413ea9a877 308 /* Clear EXTI line configuration */
ganlikun 0:13413ea9a877 309 LL_EXTI_DisableRisingTrig_0_31(1 << STM_PIN(obj->pin));
ganlikun 0:13413ea9a877 310 LL_EXTI_DisableFallingTrig_0_31(1 << STM_PIN(obj->pin));
ganlikun 0:13413ea9a877 311 LL_EXTI_DisableIT_0_31(1 << STM_PIN(obj->pin));
ganlikun 0:13413ea9a877 312 NVIC_DisableIRQ(obj->irq_n);
ganlikun 0:13413ea9a877 313 NVIC_ClearPendingIRQ(obj->irq_n);
ganlikun 0:13413ea9a877 314 }
ganlikun 0:13413ea9a877 315