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mbed library sources

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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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

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_NUCLEO_F334R8/gpio_irq_api.c@268:402bcc0c870b, 2014-07-29 (annotated)

Committer:
mbed_official
Date:
Tue Jul 29 19:00:07 2014 +0100
Revision:
268:402bcc0c870b
Parent:
251:de9a1e4ffd79
Child:
285:31249416b6f9
Synchronized with git revision 490d1a6606b3138f165c5edf2f2370ca616587c0



Full URL: https://github.com/mbedmicro/mbed/commit/490d1a6606b3138f165c5edf2f2370ca616587c0/



[LPC1114] Sleep fix + some device.h settings

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 237:f3da66175598 1 /* mbed Microcontroller Library
mbed_official 237:f3da66175598 2 *******************************************************************************
mbed_official 237:f3da66175598 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 237:f3da66175598 4 * All rights reserved.
mbed_official 237:f3da66175598 5 *
mbed_official 237:f3da66175598 6 * Redistribution and use in source and binary forms, with or without
mbed_official 237:f3da66175598 7 * modification, are permitted provided that the following conditions are met:
mbed_official 237:f3da66175598 8 *
mbed_official 237:f3da66175598 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 237:f3da66175598 10 * this list of conditions and the following disclaimer.
mbed_official 237:f3da66175598 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 237:f3da66175598 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 237:f3da66175598 13 * and/or other materials provided with the distribution.
mbed_official 237:f3da66175598 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 237:f3da66175598 15 * may be used to endorse or promote products derived from this software
mbed_official 237:f3da66175598 16 * without specific prior written permission.
mbed_official 237:f3da66175598 17 *
mbed_official 237:f3da66175598 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 237:f3da66175598 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 237:f3da66175598 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 237:f3da66175598 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 237:f3da66175598 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 237:f3da66175598 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 237:f3da66175598 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 237:f3da66175598 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 237:f3da66175598 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 237:f3da66175598 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 237:f3da66175598 28 *******************************************************************************
mbed_official 237:f3da66175598 29 */
mbed_official 237:f3da66175598 30 #include <stddef.h>
mbed_official 237:f3da66175598 31 #include "cmsis.h"
mbed_official 237:f3da66175598 32 #include "gpio_irq_api.h"
mbed_official 237:f3da66175598 33 #include "pinmap.h"
mbed_official 251:de9a1e4ffd79 34 #include "error.h"
mbed_official 237:f3da66175598 35
mbed_official 237:f3da66175598 36 #define EDGE_NONE (0)
mbed_official 237:f3da66175598 37 #define EDGE_RISE (1)
mbed_official 237:f3da66175598 38 #define EDGE_FALL (2)
mbed_official 237:f3da66175598 39 #define EDGE_BOTH (3)
mbed_official 237:f3da66175598 40
mbed_official 237:f3da66175598 41 #define CHANNEL_NUM (7)
mbed_official 237:f3da66175598 42
mbed_official 237:f3da66175598 43 static uint32_t channel_ids[CHANNEL_NUM] = {0, 0, 0, 0, 0, 0, 0};
mbed_official 237:f3da66175598 44 static uint32_t channel_gpio[CHANNEL_NUM] = {0, 0, 0, 0, 0, 0, 0};
mbed_official 237:f3da66175598 45 static uint32_t channel_pin[CHANNEL_NUM] = {0, 0, 0, 0, 0, 0, 0};
mbed_official 237:f3da66175598 46
mbed_official 237:f3da66175598 47 static gpio_irq_handler irq_handler;
mbed_official 237:f3da66175598 48
mbed_official 237:f3da66175598 49 static void handle_interrupt_in(uint32_t irq_index)
mbed_official 237:f3da66175598 50 {
mbed_official 237:f3da66175598 51 // Retrieve the gpio and pin that generate the irq
mbed_official 237:f3da66175598 52 GPIO_TypeDef *gpio = (GPIO_TypeDef *)(channel_gpio[irq_index]);
mbed_official 237:f3da66175598 53 uint32_t pin = (uint32_t)(1 << channel_pin[irq_index]);
mbed_official 237:f3da66175598 54
mbed_official 237:f3da66175598 55 // Clear interrupt flag
mbed_official 237:f3da66175598 56 if (__HAL_GPIO_EXTI_GET_FLAG(pin) != RESET) {
mbed_official 237:f3da66175598 57 __HAL_GPIO_EXTI_CLEAR_FLAG(pin);
mbed_official 237:f3da66175598 58 }
mbed_official 237:f3da66175598 59
mbed_official 237:f3da66175598 60 if (channel_ids[irq_index] == 0) return;
mbed_official 237:f3da66175598 61
mbed_official 237:f3da66175598 62 // Check which edge has generated the irq
mbed_official 237:f3da66175598 63 if ((gpio->IDR & pin) == 0) {
mbed_official 237:f3da66175598 64 irq_handler(channel_ids[irq_index], IRQ_FALL);
mbed_official 237:f3da66175598 65 } else {
mbed_official 237:f3da66175598 66 irq_handler(channel_ids[irq_index], IRQ_RISE);
mbed_official 237:f3da66175598 67 }
mbed_official 237:f3da66175598 68 }
mbed_official 237:f3da66175598 69
mbed_official 237:f3da66175598 70 // The irq_index is passed to the function
mbed_official 237:f3da66175598 71 // EXTI line 0
mbed_official 237:f3da66175598 72 static void gpio_irq0(void)
mbed_official 237:f3da66175598 73 {
mbed_official 237:f3da66175598 74 handle_interrupt_in(0);
mbed_official 237:f3da66175598 75 }
mbed_official 237:f3da66175598 76 // EXTI line 1
mbed_official 237:f3da66175598 77 static void gpio_irq1(void)
mbed_official 237:f3da66175598 78 {
mbed_official 237:f3da66175598 79 handle_interrupt_in(1);
mbed_official 237:f3da66175598 80 }
mbed_official 237:f3da66175598 81 // EXTI line 2
mbed_official 237:f3da66175598 82 static void gpio_irq2(void)
mbed_official 237:f3da66175598 83 {
mbed_official 237:f3da66175598 84 handle_interrupt_in(2);
mbed_official 237:f3da66175598 85 }
mbed_official 237:f3da66175598 86 // EXTI line 3
mbed_official 237:f3da66175598 87 static void gpio_irq3(void)
mbed_official 237:f3da66175598 88 {
mbed_official 237:f3da66175598 89 handle_interrupt_in(3);
mbed_official 237:f3da66175598 90 }
mbed_official 237:f3da66175598 91 // EXTI line 4
mbed_official 237:f3da66175598 92 static void gpio_irq4(void)
mbed_official 237:f3da66175598 93 {
mbed_official 237:f3da66175598 94 handle_interrupt_in(4);
mbed_official 237:f3da66175598 95 }
mbed_official 237:f3da66175598 96 // EXTI lines 5 to 9
mbed_official 237:f3da66175598 97 static void gpio_irq5(void)
mbed_official 237:f3da66175598 98 {
mbed_official 237:f3da66175598 99 handle_interrupt_in(5);
mbed_official 237:f3da66175598 100 }
mbed_official 237:f3da66175598 101 // EXTI lines 10 to 15
mbed_official 237:f3da66175598 102 static void gpio_irq6(void)
mbed_official 237:f3da66175598 103 {
mbed_official 237:f3da66175598 104 handle_interrupt_in(6);
mbed_official 237:f3da66175598 105 }
mbed_official 237:f3da66175598 106
mbed_official 237:f3da66175598 107 extern uint32_t Set_GPIO_Clock(uint32_t port_idx);
mbed_official 237:f3da66175598 108
mbed_official 237:f3da66175598 109 int gpio_irq_init(gpio_irq_t *obj, PinName pin, gpio_irq_handler handler, uint32_t id)
mbed_official 237:f3da66175598 110 {
mbed_official 237:f3da66175598 111 IRQn_Type irq_n = (IRQn_Type)0;
mbed_official 237:f3da66175598 112 uint32_t vector = 0;
mbed_official 237:f3da66175598 113 uint32_t irq_index;
mbed_official 237:f3da66175598 114
mbed_official 237:f3da66175598 115 if (pin == NC) return -1;
mbed_official 237:f3da66175598 116
mbed_official 237:f3da66175598 117 uint32_t port_index = STM_PORT(pin);
mbed_official 237:f3da66175598 118 uint32_t pin_index = STM_PIN(pin);
mbed_official 237:f3da66175598 119
mbed_official 237:f3da66175598 120 // Select irq number and interrupt routine
mbed_official 237:f3da66175598 121 switch (pin_index) {
mbed_official 237:f3da66175598 122 case 0:
mbed_official 237:f3da66175598 123 irq_n = EXTI0_IRQn;
mbed_official 237:f3da66175598 124 vector = (uint32_t)&gpio_irq0;
mbed_official 237:f3da66175598 125 irq_index = 0;
mbed_official 237:f3da66175598 126 break;
mbed_official 237:f3da66175598 127 case 1:
mbed_official 237:f3da66175598 128 irq_n = EXTI1_IRQn;
mbed_official 237:f3da66175598 129 vector = (uint32_t)&gpio_irq1;
mbed_official 237:f3da66175598 130 irq_index = 1;
mbed_official 237:f3da66175598 131 break;
mbed_official 237:f3da66175598 132 case 2:
mbed_official 237:f3da66175598 133 irq_n = EXTI2_TSC_IRQn;
mbed_official 237:f3da66175598 134 vector = (uint32_t)&gpio_irq2;
mbed_official 237:f3da66175598 135 irq_index = 2;
mbed_official 237:f3da66175598 136 break;
mbed_official 237:f3da66175598 137 case 3:
mbed_official 237:f3da66175598 138 irq_n = EXTI3_IRQn;
mbed_official 237:f3da66175598 139 vector = (uint32_t)&gpio_irq3;
mbed_official 237:f3da66175598 140 irq_index = 3;
mbed_official 237:f3da66175598 141 break;
mbed_official 237:f3da66175598 142 case 4:
mbed_official 237:f3da66175598 143 irq_n = EXTI4_IRQn;
mbed_official 237:f3da66175598 144 vector = (uint32_t)&gpio_irq4;
mbed_official 237:f3da66175598 145 irq_index = 4;
mbed_official 237:f3da66175598 146 break;
mbed_official 237:f3da66175598 147 case 5:
mbed_official 237:f3da66175598 148 case 6:
mbed_official 237:f3da66175598 149 case 7:
mbed_official 237:f3da66175598 150 case 8:
mbed_official 237:f3da66175598 151 case 9:
mbed_official 237:f3da66175598 152 irq_n = EXTI9_5_IRQn;
mbed_official 237:f3da66175598 153 vector = (uint32_t)&gpio_irq5;
mbed_official 237:f3da66175598 154 irq_index = 5;
mbed_official 237:f3da66175598 155 break;
mbed_official 237:f3da66175598 156 case 10:
mbed_official 237:f3da66175598 157 case 11:
mbed_official 237:f3da66175598 158 case 12:
mbed_official 237:f3da66175598 159 case 13:
mbed_official 237:f3da66175598 160 case 14:
mbed_official 237:f3da66175598 161 case 15:
mbed_official 237:f3da66175598 162 irq_n = EXTI15_10_IRQn;
mbed_official 237:f3da66175598 163 vector = (uint32_t)&gpio_irq6;
mbed_official 237:f3da66175598 164 irq_index = 6;
mbed_official 237:f3da66175598 165 break;
mbed_official 237:f3da66175598 166 default:
mbed_official 237:f3da66175598 167 error("InterruptIn error: pin not supported.\n");
mbed_official 237:f3da66175598 168 return -1;
mbed_official 237:f3da66175598 169 }
mbed_official 237:f3da66175598 170
mbed_official 237:f3da66175598 171 // Enable GPIO clock
mbed_official 237:f3da66175598 172 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 237:f3da66175598 173
mbed_official 237:f3da66175598 174 // Configure GPIO
mbed_official 237:f3da66175598 175 pin_function(pin, STM_PIN_DATA(STM_MODE_IT_FALLING, GPIO_NOPULL, 0));
mbed_official 237:f3da66175598 176
mbed_official 237:f3da66175598 177 // Enable EXTI interrupt
mbed_official 237:f3da66175598 178 NVIC_SetVector(irq_n, vector);
mbed_official 237:f3da66175598 179 NVIC_EnableIRQ(irq_n);
mbed_official 237:f3da66175598 180
mbed_official 237:f3da66175598 181 // Save informations for future use
mbed_official 237:f3da66175598 182 obj->irq_n = irq_n;
mbed_official 237:f3da66175598 183 obj->irq_index = irq_index;
mbed_official 237:f3da66175598 184 obj->event = EDGE_NONE;
mbed_official 237:f3da66175598 185 obj->pin = pin;
mbed_official 237:f3da66175598 186 channel_ids[irq_index] = id;
mbed_official 237:f3da66175598 187 channel_gpio[irq_index] = gpio_add;
mbed_official 237:f3da66175598 188 channel_pin[irq_index] = pin_index;
mbed_official 237:f3da66175598 189
mbed_official 237:f3da66175598 190 irq_handler = handler;
mbed_official 237:f3da66175598 191
mbed_official 237:f3da66175598 192 return 0;
mbed_official 237:f3da66175598 193 }
mbed_official 237:f3da66175598 194
mbed_official 237:f3da66175598 195 void gpio_irq_free(gpio_irq_t *obj)
mbed_official 237:f3da66175598 196 {
mbed_official 237:f3da66175598 197 channel_ids[obj->irq_index] = 0;
mbed_official 237:f3da66175598 198 channel_gpio[obj->irq_index] = 0;
mbed_official 237:f3da66175598 199 channel_pin[obj->irq_index] = 0;
mbed_official 237:f3da66175598 200 // Disable EXTI line
mbed_official 237:f3da66175598 201 pin_function(obj->pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 237:f3da66175598 202 obj->event = EDGE_NONE;
mbed_official 237:f3da66175598 203 }
mbed_official 237:f3da66175598 204
mbed_official 237:f3da66175598 205 void gpio_irq_set(gpio_irq_t *obj, gpio_irq_event event, uint32_t enable)
mbed_official 237:f3da66175598 206 {
mbed_official 237:f3da66175598 207 uint32_t mode = STM_MODE_INPUT;
mbed_official 237:f3da66175598 208 uint32_t pull = GPIO_NOPULL;
mbed_official 237:f3da66175598 209
mbed_official 237:f3da66175598 210 if (enable) {
mbed_official 237:f3da66175598 211
mbed_official 237:f3da66175598 212 pull = GPIO_NOPULL;
mbed_official 237:f3da66175598 213
mbed_official 237:f3da66175598 214 if (event == IRQ_RISE) {
mbed_official 237:f3da66175598 215 if ((obj->event == EDGE_FALL) || (obj->event == EDGE_BOTH)) {
mbed_official 237:f3da66175598 216 mode = STM_MODE_IT_RISING_FALLING;
mbed_official 237:f3da66175598 217 obj->event = EDGE_BOTH;
mbed_official 237:f3da66175598 218 } else { // NONE or RISE
mbed_official 237:f3da66175598 219 mode = STM_MODE_IT_RISING;
mbed_official 237:f3da66175598 220 obj->event = EDGE_RISE;
mbed_official 237:f3da66175598 221 }
mbed_official 237:f3da66175598 222 }
mbed_official 237:f3da66175598 223
mbed_official 237:f3da66175598 224 if (event == IRQ_FALL) {
mbed_official 237:f3da66175598 225 if ((obj->event == EDGE_RISE) || (obj->event == EDGE_BOTH)) {
mbed_official 237:f3da66175598 226 mode = STM_MODE_IT_RISING_FALLING;
mbed_official 237:f3da66175598 227 obj->event = EDGE_BOTH;
mbed_official 237:f3da66175598 228 } else { // NONE or FALL
mbed_official 237:f3da66175598 229 mode = STM_MODE_IT_FALLING;
mbed_official 237:f3da66175598 230 obj->event = EDGE_FALL;
mbed_official 237:f3da66175598 231 }
mbed_official 237:f3da66175598 232 }
mbed_official 237:f3da66175598 233 } else {
mbed_official 237:f3da66175598 234 mode = STM_MODE_INPUT;
mbed_official 237:f3da66175598 235 pull = GPIO_NOPULL;
mbed_official 237:f3da66175598 236 obj->event = EDGE_NONE;
mbed_official 237:f3da66175598 237 }
mbed_official 237:f3da66175598 238
mbed_official 237:f3da66175598 239 pin_function(obj->pin, STM_PIN_DATA(mode, pull, 0));
mbed_official 237:f3da66175598 240 }
mbed_official 237:f3da66175598 241
mbed_official 237:f3da66175598 242 void gpio_irq_enable(gpio_irq_t *obj)
mbed_official 237:f3da66175598 243 {
mbed_official 237:f3da66175598 244 NVIC_EnableIRQ(obj->irq_n);
mbed_official 237:f3da66175598 245 }
mbed_official 237:f3da66175598 246
mbed_official 237:f3da66175598 247 void gpio_irq_disable(gpio_irq_t *obj)
mbed_official 237:f3da66175598 248 {
mbed_official 237:f3da66175598 249 NVIC_DisableIRQ(obj->irq_n);
mbed_official 237:f3da66175598 250 obj->event = EDGE_NONE;
mbed_official 237:f3da66175598 251 }