Marcus Chang / nRF51822

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Fork of nRF51822 by Nordic Semiconductor

nordic/app_common/app_gpiote.c@85:17fe69405098, 2014-12-12 (annotated)

Committer:
marcuschang
Date:
Fri Dec 12 17:12:35 2014 +0000
Revision:
85:17fe69405098
Parent:
56:a1071b629aa3 
Write permission was not set for 'write without response' characteristics.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Rohit Grover 46:2bfbbe290083 1 /* Copyright (c) 2012 Nordic Semiconductor. All Rights Reserved.
Rohit Grover 46:2bfbbe290083 2 *
Rohit Grover 46:2bfbbe290083 3 * The information contained herein is property of Nordic Semiconductor ASA.
Rohit Grover 46:2bfbbe290083 4 * Terms and conditions of usage are described in detail in NORDIC
Rohit Grover 46:2bfbbe290083 5 * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
Rohit Grover 46:2bfbbe290083 6 *
Rohit Grover 46:2bfbbe290083 7 * Licensees are granted free, non-transferable use of the information. NO
Rohit Grover 46:2bfbbe290083 8 * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
Rohit Grover 46:2bfbbe290083 9 * the file.
Rohit Grover 46:2bfbbe290083 10 *
Rohit Grover 46:2bfbbe290083 11 */
Rohit Grover 46:2bfbbe290083 12
Rohit Grover 56:a1071b629aa3 13 #if NEED_APP_GPIOTE /* disabled by default */
Rohit Grover 56:a1071b629aa3 14
Rohit Grover 46:2bfbbe290083 15 #include "app_gpiote.h"
Rohit Grover 46:2bfbbe290083 16 #include <stdlib.h>
Rohit Grover 46:2bfbbe290083 17 #include <string.h>
Rohit Grover 46:2bfbbe290083 18 #include "app_util.h"
Rohit Grover 46:2bfbbe290083 19 #include "app_util_platform.h"
Rohit Grover 46:2bfbbe290083 20 #include "nrf_error.h"
Rohit Grover 46:2bfbbe290083 21 #include "nrf_gpio.h"
Rohit Grover 46:2bfbbe290083 22
Rohit Grover 46:2bfbbe290083 23
Rohit Grover 46:2bfbbe290083 24 /**@brief GPIOTE user type. */
Rohit Grover 46:2bfbbe290083 25 typedef struct
Rohit Grover 46:2bfbbe290083 26 {
Rohit Grover 46:2bfbbe290083 27 uint32_t pins_mask; /**< Mask defining which pins user wants to monitor. */
Rohit Grover 46:2bfbbe290083 28 uint32_t pins_low_to_high_mask; /**< Mask defining which pins will generate events to this user when toggling low->high. */
Rohit Grover 46:2bfbbe290083 29 uint32_t pins_high_to_low_mask; /**< Mask defining which pins will generate events to this user when toggling high->low. */
Rohit Grover 46:2bfbbe290083 30 uint32_t sense_high_pins; /**< Mask defining which pins are configured to generate GPIOTE interrupt on transition to high level. */
Rohit Grover 46:2bfbbe290083 31 app_gpiote_event_handler_t event_handler; /**< Pointer to function to be executed when an event occurs. */
Rohit Grover 46:2bfbbe290083 32 } gpiote_user_t;
Rohit Grover 46:2bfbbe290083 33
Rohit Grover 46:2bfbbe290083 34 STATIC_ASSERT(sizeof(gpiote_user_t) <= GPIOTE_USER_NODE_SIZE);
Rohit Grover 46:2bfbbe290083 35 STATIC_ASSERT(sizeof(gpiote_user_t) % 4 == 0);
Rohit Grover 46:2bfbbe290083 36
Rohit Grover 46:2bfbbe290083 37 static uint32_t m_enabled_users_mask; /**< Mask for tracking which users are enabled. */
Rohit Grover 46:2bfbbe290083 38 static uint8_t m_user_array_size; /**< Size of user array. */
Rohit Grover 46:2bfbbe290083 39 static uint8_t m_user_count; /**< Number of registered users. */
Rohit Grover 46:2bfbbe290083 40 static gpiote_user_t * mp_users = NULL; /**< Array of GPIOTE users. */
Rohit Grover 46:2bfbbe290083 41
Rohit Grover 46:2bfbbe290083 42
Rohit Grover 46:2bfbbe290083 43 /**@brief Function for toggling sense level for specified pins.
Rohit Grover 46:2bfbbe290083 44 *
Rohit Grover 46:2bfbbe290083 45 * @param[in] p_user Pointer to user structure.
Rohit Grover 46:2bfbbe290083 46 * @param[in] pins Bitmask specifying for which pins the sense level is to be toggled.
Rohit Grover 46:2bfbbe290083 47 */
Rohit Grover 46:2bfbbe290083 48 static void sense_level_toggle(gpiote_user_t * p_user, uint32_t pins)
Rohit Grover 46:2bfbbe290083 49 {
Rohit Grover 46:2bfbbe290083 50 uint32_t pin_no;
Rohit Grover 46:2bfbbe290083 51
Rohit Grover 46:2bfbbe290083 52 for (pin_no = 0; pin_no < NO_OF_PINS; pin_no++)
Rohit Grover 46:2bfbbe290083 53 {
Rohit Grover 46:2bfbbe290083 54 uint32_t pin_mask = (1 << pin_no);
Rohit Grover 46:2bfbbe290083 55
Rohit Grover 46:2bfbbe290083 56 if ((pins & pin_mask) != 0)
Rohit Grover 46:2bfbbe290083 57 {
Rohit Grover 46:2bfbbe290083 58 uint32_t sense;
Rohit Grover 46:2bfbbe290083 59
Rohit Grover 46:2bfbbe290083 60 // Invert sensing.
Rohit Grover 46:2bfbbe290083 61 if ((p_user->sense_high_pins & pin_mask) == 0)
Rohit Grover 46:2bfbbe290083 62 {
Rohit Grover 46:2bfbbe290083 63 sense = GPIO_PIN_CNF_SENSE_High << GPIO_PIN_CNF_SENSE_Pos;
Rohit Grover 46:2bfbbe290083 64 p_user->sense_high_pins |= pin_mask;
Rohit Grover 46:2bfbbe290083 65 }
Rohit Grover 46:2bfbbe290083 66 else
Rohit Grover 46:2bfbbe290083 67 {
Rohit Grover 46:2bfbbe290083 68 sense = GPIO_PIN_CNF_SENSE_Low << GPIO_PIN_CNF_SENSE_Pos;
Rohit Grover 46:2bfbbe290083 69 p_user->sense_high_pins &= ~pin_mask;
Rohit Grover 46:2bfbbe290083 70 }
Rohit Grover 46:2bfbbe290083 71
Rohit Grover 46:2bfbbe290083 72 NRF_GPIO->PIN_CNF[pin_no] &= ~GPIO_PIN_CNF_SENSE_Msk;
Rohit Grover 46:2bfbbe290083 73 NRF_GPIO->PIN_CNF[pin_no] |= sense;
Rohit Grover 46:2bfbbe290083 74 }
Rohit Grover 46:2bfbbe290083 75 }
Rohit Grover 46:2bfbbe290083 76 }
Rohit Grover 46:2bfbbe290083 77
Rohit Grover 46:2bfbbe290083 78
Rohit Grover 46:2bfbbe290083 79 /**@brief Function for handling the GPIOTE interrupt.
Rohit Grover 46:2bfbbe290083 80 */
Rohit Grover 46:2bfbbe290083 81 void GPIOTE_IRQHandler(void)
Rohit Grover 46:2bfbbe290083 82 {
Rohit Grover 46:2bfbbe290083 83 uint8_t i;
Rohit Grover 46:2bfbbe290083 84 uint32_t pins_changed;
Rohit Grover 46:2bfbbe290083 85 uint32_t pins_state = NRF_GPIO->IN;
Rohit Grover 46:2bfbbe290083 86
Rohit Grover 46:2bfbbe290083 87 // Clear event.
Rohit Grover 46:2bfbbe290083 88 NRF_GPIOTE->EVENTS_PORT = 0;
Rohit Grover 46:2bfbbe290083 89
Rohit Grover 46:2bfbbe290083 90 // Check all users.
Rohit Grover 46:2bfbbe290083 91 for (i = 0; i < m_user_count; i++)
Rohit Grover 46:2bfbbe290083 92 {
Rohit Grover 46:2bfbbe290083 93 gpiote_user_t * p_user = &mp_users[i];
Rohit Grover 46:2bfbbe290083 94
Rohit Grover 46:2bfbbe290083 95 // Check if user is enabled.
Rohit Grover 46:2bfbbe290083 96 if (((1 << i) & m_enabled_users_mask) != 0)
Rohit Grover 46:2bfbbe290083 97 {
Rohit Grover 46:2bfbbe290083 98 uint32_t transition_pins;
Rohit Grover 46:2bfbbe290083 99 uint32_t event_low_to_high;
Rohit Grover 46:2bfbbe290083 100 uint32_t event_high_to_low;
Rohit Grover 46:2bfbbe290083 101
Rohit Grover 46:2bfbbe290083 102 // Find set of pins on which there has been a transition.
Rohit Grover 46:2bfbbe290083 103 transition_pins = (pins_state ^ ~p_user->sense_high_pins) & p_user->pins_mask;
Rohit Grover 46:2bfbbe290083 104
Rohit Grover 46:2bfbbe290083 105 // Toggle SENSE level for all pins that have changed state.
Rohit Grover 46:2bfbbe290083 106 sense_level_toggle(p_user, transition_pins);
Rohit Grover 46:2bfbbe290083 107
Rohit Grover 46:2bfbbe290083 108 // Second read after setting sense.
Rohit Grover 46:2bfbbe290083 109 // Check if any pins have changed while serving this interrupt.
Rohit Grover 46:2bfbbe290083 110 pins_changed = NRF_GPIO->IN ^ pins_state;
Rohit Grover 46:2bfbbe290083 111 if (pins_changed)
Rohit Grover 46:2bfbbe290083 112 {
Rohit Grover 46:2bfbbe290083 113 // Transition pins detected in late stage.
Rohit Grover 46:2bfbbe290083 114 uint32_t late_transition_pins;
Rohit Grover 46:2bfbbe290083 115
Rohit Grover 46:2bfbbe290083 116 pins_state |= pins_changed;
Rohit Grover 46:2bfbbe290083 117
Rohit Grover 46:2bfbbe290083 118 // Find set of pins on which there has been a transition.
Rohit Grover 46:2bfbbe290083 119 late_transition_pins = (pins_state ^ ~p_user->sense_high_pins) & p_user->pins_mask;
Rohit Grover 46:2bfbbe290083 120
Rohit Grover 46:2bfbbe290083 121 // Toggle SENSE level for all pins that have changed state in last phase.
Rohit Grover 46:2bfbbe290083 122 sense_level_toggle(p_user, late_transition_pins);
Rohit Grover 46:2bfbbe290083 123
Rohit Grover 46:2bfbbe290083 124 // Update pins that has changed state since the interrupt occurred.
Rohit Grover 46:2bfbbe290083 125 transition_pins |= late_transition_pins;
Rohit Grover 46:2bfbbe290083 126 }
Rohit Grover 46:2bfbbe290083 127
Rohit Grover 46:2bfbbe290083 128 // Call user event handler if an event has occurred.
Rohit Grover 46:2bfbbe290083 129 event_high_to_low = (~pins_state & p_user->pins_high_to_low_mask) & transition_pins;
Rohit Grover 46:2bfbbe290083 130 event_low_to_high = (pins_state & p_user->pins_low_to_high_mask) & transition_pins;
Rohit Grover 46:2bfbbe290083 131
Rohit Grover 46:2bfbbe290083 132 if ((event_low_to_high | event_high_to_low) != 0)
Rohit Grover 46:2bfbbe290083 133 {
Rohit Grover 46:2bfbbe290083 134 p_user->event_handler(event_low_to_high, event_high_to_low);
Rohit Grover 46:2bfbbe290083 135 }
Rohit Grover 46:2bfbbe290083 136 }
Rohit Grover 46:2bfbbe290083 137 }
Rohit Grover 46:2bfbbe290083 138 }
Rohit Grover 46:2bfbbe290083 139
Rohit Grover 46:2bfbbe290083 140
Rohit Grover 46:2bfbbe290083 141 /**@brief Function for sense disabling for all pins for specified user.
Rohit Grover 46:2bfbbe290083 142 *
Rohit Grover 46:2bfbbe290083 143 * @param[in] user_id User id.
Rohit Grover 46:2bfbbe290083 144 */
Rohit Grover 46:2bfbbe290083 145 static void pins_sense_disable(app_gpiote_user_id_t user_id)
Rohit Grover 46:2bfbbe290083 146 {
Rohit Grover 46:2bfbbe290083 147 uint32_t pin_no;
Rohit Grover 46:2bfbbe290083 148
Rohit Grover 46:2bfbbe290083 149 for (pin_no = 0; pin_no < 32; pin_no++)
Rohit Grover 46:2bfbbe290083 150 {
Rohit Grover 46:2bfbbe290083 151 if ((mp_users[user_id].pins_mask & (1 << pin_no)) != 0)
Rohit Grover 46:2bfbbe290083 152 {
Rohit Grover 46:2bfbbe290083 153 NRF_GPIO->PIN_CNF[pin_no] &= ~GPIO_PIN_CNF_SENSE_Msk;
Rohit Grover 46:2bfbbe290083 154 NRF_GPIO->PIN_CNF[pin_no] |= GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos;
Rohit Grover 46:2bfbbe290083 155 }
Rohit Grover 46:2bfbbe290083 156 }
Rohit Grover 46:2bfbbe290083 157 }
Rohit Grover 46:2bfbbe290083 158
Rohit Grover 46:2bfbbe290083 159
Rohit Grover 46:2bfbbe290083 160 uint32_t app_gpiote_init(uint8_t max_users, void * p_buffer)
Rohit Grover 46:2bfbbe290083 161 {
Rohit Grover 46:2bfbbe290083 162 if (p_buffer == NULL)
Rohit Grover 46:2bfbbe290083 163 {
Rohit Grover 46:2bfbbe290083 164 return NRF_ERROR_INVALID_PARAM;
Rohit Grover 46:2bfbbe290083 165 }
Rohit Grover 46:2bfbbe290083 166
Rohit Grover 46:2bfbbe290083 167 // Check that buffer is correctly aligned.
Rohit Grover 46:2bfbbe290083 168 if (!is_word_aligned(p_buffer))
Rohit Grover 46:2bfbbe290083 169 {
Rohit Grover 46:2bfbbe290083 170 return NRF_ERROR_INVALID_PARAM;
Rohit Grover 46:2bfbbe290083 171 }
Rohit Grover 46:2bfbbe290083 172
Rohit Grover 46:2bfbbe290083 173 // Initialize file globals.
Rohit Grover 46:2bfbbe290083 174 mp_users = (gpiote_user_t *)p_buffer;
Rohit Grover 46:2bfbbe290083 175 m_user_array_size = max_users;
Rohit Grover 46:2bfbbe290083 176 m_user_count = 0;
Rohit Grover 46:2bfbbe290083 177 m_enabled_users_mask = 0;
Rohit Grover 46:2bfbbe290083 178
Rohit Grover 46:2bfbbe290083 179 memset(mp_users, 0, m_user_array_size * sizeof(gpiote_user_t));
Rohit Grover 46:2bfbbe290083 180
Rohit Grover 46:2bfbbe290083 181 // Initialize GPIOTE interrupt (will not be enabled until app_gpiote_user_enable() is called).
Rohit Grover 46:2bfbbe290083 182 NRF_GPIOTE->INTENCLR = 0xFFFFFFFF;
Rohit Grover 46:2bfbbe290083 183
Rohit Grover 46:2bfbbe290083 184 NVIC_ClearPendingIRQ(GPIOTE_IRQn);
Rohit Grover 46:2bfbbe290083 185 NVIC_SetPriority(GPIOTE_IRQn, APP_IRQ_PRIORITY_HIGH);
Rohit Grover 46:2bfbbe290083 186 NVIC_EnableIRQ(GPIOTE_IRQn);
Rohit Grover 46:2bfbbe290083 187
Rohit Grover 46:2bfbbe290083 188 return NRF_SUCCESS;
Rohit Grover 46:2bfbbe290083 189 }
Rohit Grover 46:2bfbbe290083 190
Rohit Grover 46:2bfbbe290083 191
Rohit Grover 46:2bfbbe290083 192 uint32_t app_gpiote_user_register(app_gpiote_user_id_t * p_user_id,
Rohit Grover 46:2bfbbe290083 193 uint32_t pins_low_to_high_mask,
Rohit Grover 46:2bfbbe290083 194 uint32_t pins_high_to_low_mask,
Rohit Grover 46:2bfbbe290083 195 app_gpiote_event_handler_t event_handler)
Rohit Grover 46:2bfbbe290083 196 {
Rohit Grover 46:2bfbbe290083 197 // Check state and parameters.
Rohit Grover 46:2bfbbe290083 198 if (mp_users == NULL)
Rohit Grover 46:2bfbbe290083 199 {
Rohit Grover 46:2bfbbe290083 200 return NRF_ERROR_INVALID_STATE;
Rohit Grover 46:2bfbbe290083 201 }
Rohit Grover 46:2bfbbe290083 202 if (event_handler == NULL)
Rohit Grover 46:2bfbbe290083 203 {
Rohit Grover 46:2bfbbe290083 204 return NRF_ERROR_INVALID_PARAM;
Rohit Grover 46:2bfbbe290083 205 }
Rohit Grover 46:2bfbbe290083 206 if (m_user_count >= m_user_array_size)
Rohit Grover 46:2bfbbe290083 207 {
Rohit Grover 46:2bfbbe290083 208 return NRF_ERROR_NO_MEM;
Rohit Grover 46:2bfbbe290083 209 }
Rohit Grover 46:2bfbbe290083 210
Rohit Grover 46:2bfbbe290083 211 // Allocate new user.
Rohit Grover 46:2bfbbe290083 212 mp_users[m_user_count].pins_mask = pins_low_to_high_mask | pins_high_to_low_mask;
Rohit Grover 46:2bfbbe290083 213 mp_users[m_user_count].pins_low_to_high_mask = pins_low_to_high_mask;
Rohit Grover 46:2bfbbe290083 214 mp_users[m_user_count].pins_high_to_low_mask = pins_high_to_low_mask;
Rohit Grover 46:2bfbbe290083 215 mp_users[m_user_count].event_handler = event_handler;
Rohit Grover 46:2bfbbe290083 216
Rohit Grover 46:2bfbbe290083 217 *p_user_id = m_user_count++;
Rohit Grover 46:2bfbbe290083 218
Rohit Grover 46:2bfbbe290083 219 // Make sure SENSE is disabled for all pins.
Rohit Grover 46:2bfbbe290083 220 pins_sense_disable(*p_user_id);
Rohit Grover 46:2bfbbe290083 221
Rohit Grover 46:2bfbbe290083 222 return NRF_SUCCESS;
Rohit Grover 46:2bfbbe290083 223 }
Rohit Grover 46:2bfbbe290083 224
Rohit Grover 46:2bfbbe290083 225
Rohit Grover 46:2bfbbe290083 226 uint32_t app_gpiote_user_enable(app_gpiote_user_id_t user_id)
Rohit Grover 46:2bfbbe290083 227 {
Rohit Grover 46:2bfbbe290083 228 uint32_t pin_no;
Rohit Grover 46:2bfbbe290083 229 uint32_t pins_state;
Rohit Grover 46:2bfbbe290083 230
Rohit Grover 46:2bfbbe290083 231 // Check state and parameters.
Rohit Grover 46:2bfbbe290083 232 if (mp_users == NULL)
Rohit Grover 46:2bfbbe290083 233 {
Rohit Grover 46:2bfbbe290083 234 return NRF_ERROR_INVALID_STATE;
Rohit Grover 46:2bfbbe290083 235 }
Rohit Grover 46:2bfbbe290083 236 if (user_id >= m_user_count)
Rohit Grover 46:2bfbbe290083 237 {
Rohit Grover 46:2bfbbe290083 238 return NRF_ERROR_INVALID_PARAM;
Rohit Grover 46:2bfbbe290083 239 }
Rohit Grover 46:2bfbbe290083 240
Rohit Grover 46:2bfbbe290083 241 // Clear any pending event.
Rohit Grover 46:2bfbbe290083 242 NRF_GPIOTE->EVENTS_PORT = 0;
Rohit Grover 46:2bfbbe290083 243 pins_state = NRF_GPIO->IN;
Rohit Grover 46:2bfbbe290083 244
Rohit Grover 46:2bfbbe290083 245 // Enable user.
Rohit Grover 46:2bfbbe290083 246 if (m_enabled_users_mask == 0)
Rohit Grover 46:2bfbbe290083 247 {
Rohit Grover 46:2bfbbe290083 248 NRF_GPIOTE->INTENSET = GPIOTE_INTENSET_PORT_Msk;
Rohit Grover 46:2bfbbe290083 249 }
Rohit Grover 46:2bfbbe290083 250 m_enabled_users_mask |= (1 << user_id);
Rohit Grover 46:2bfbbe290083 251
Rohit Grover 46:2bfbbe290083 252 // Enable sensing for all pins for specified user.
Rohit Grover 46:2bfbbe290083 253 mp_users[user_id].sense_high_pins = 0;
Rohit Grover 46:2bfbbe290083 254 for (pin_no = 0; pin_no < 32; pin_no++)
Rohit Grover 46:2bfbbe290083 255 {
Rohit Grover 46:2bfbbe290083 256 uint32_t pin_mask = (1 << pin_no);
Rohit Grover 46:2bfbbe290083 257
Rohit Grover 46:2bfbbe290083 258 if ((mp_users[user_id].pins_mask & pin_mask) != 0)
Rohit Grover 46:2bfbbe290083 259 {
Rohit Grover 46:2bfbbe290083 260 uint32_t sense;
Rohit Grover 46:2bfbbe290083 261
Rohit Grover 46:2bfbbe290083 262 if ((pins_state & pin_mask) != 0)
Rohit Grover 46:2bfbbe290083 263 {
Rohit Grover 46:2bfbbe290083 264 sense = GPIO_PIN_CNF_SENSE_Low << GPIO_PIN_CNF_SENSE_Pos;
Rohit Grover 46:2bfbbe290083 265 }
Rohit Grover 46:2bfbbe290083 266 else
Rohit Grover 46:2bfbbe290083 267 {
Rohit Grover 46:2bfbbe290083 268 sense = GPIO_PIN_CNF_SENSE_High << GPIO_PIN_CNF_SENSE_Pos;
Rohit Grover 46:2bfbbe290083 269 mp_users[user_id].sense_high_pins |= pin_mask;
Rohit Grover 46:2bfbbe290083 270 }
Rohit Grover 46:2bfbbe290083 271
Rohit Grover 46:2bfbbe290083 272 NRF_GPIO->PIN_CNF[pin_no] &= ~GPIO_PIN_CNF_SENSE_Msk;
Rohit Grover 46:2bfbbe290083 273 NRF_GPIO->PIN_CNF[pin_no] |= sense;
Rohit Grover 46:2bfbbe290083 274 }
Rohit Grover 46:2bfbbe290083 275 }
Rohit Grover 46:2bfbbe290083 276
Rohit Grover 46:2bfbbe290083 277 return NRF_SUCCESS;
Rohit Grover 46:2bfbbe290083 278 }
Rohit Grover 46:2bfbbe290083 279
Rohit Grover 46:2bfbbe290083 280
Rohit Grover 46:2bfbbe290083 281 uint32_t app_gpiote_user_disable(app_gpiote_user_id_t user_id)
Rohit Grover 46:2bfbbe290083 282 {
Rohit Grover 46:2bfbbe290083 283 // Check state and parameters.
Rohit Grover 46:2bfbbe290083 284 if (mp_users == NULL)
Rohit Grover 46:2bfbbe290083 285 {
Rohit Grover 46:2bfbbe290083 286 return NRF_ERROR_INVALID_STATE;
Rohit Grover 46:2bfbbe290083 287 }
Rohit Grover 46:2bfbbe290083 288 if (user_id >= m_user_count)
Rohit Grover 46:2bfbbe290083 289 {
Rohit Grover 46:2bfbbe290083 290 return NRF_ERROR_INVALID_PARAM;
Rohit Grover 46:2bfbbe290083 291 }
Rohit Grover 46:2bfbbe290083 292
Rohit Grover 46:2bfbbe290083 293 // Disable sensing for all pins for specified user.
Rohit Grover 46:2bfbbe290083 294 pins_sense_disable(user_id);
Rohit Grover 46:2bfbbe290083 295
Rohit Grover 46:2bfbbe290083 296 // Disable user.
Rohit Grover 46:2bfbbe290083 297 m_enabled_users_mask &= ~(1UL << user_id);
Rohit Grover 46:2bfbbe290083 298 if (m_enabled_users_mask == 0)
Rohit Grover 46:2bfbbe290083 299 {
Rohit Grover 46:2bfbbe290083 300 NRF_GPIOTE->INTENCLR = GPIOTE_INTENSET_PORT_Msk;
Rohit Grover 46:2bfbbe290083 301 }
Rohit Grover 46:2bfbbe290083 302
Rohit Grover 46:2bfbbe290083 303 return NRF_SUCCESS;
Rohit Grover 46:2bfbbe290083 304 }
Rohit Grover 46:2bfbbe290083 305
Rohit Grover 46:2bfbbe290083 306
Rohit Grover 46:2bfbbe290083 307 uint32_t app_gpiote_pins_state_get(app_gpiote_user_id_t user_id, uint32_t * p_pins)
Rohit Grover 46:2bfbbe290083 308 {
Rohit Grover 46:2bfbbe290083 309 gpiote_user_t * p_user;
Rohit Grover 46:2bfbbe290083 310
Rohit Grover 46:2bfbbe290083 311 // Check state and parameters.
Rohit Grover 46:2bfbbe290083 312 if (mp_users == NULL)
Rohit Grover 46:2bfbbe290083 313 {
Rohit Grover 46:2bfbbe290083 314 return NRF_ERROR_INVALID_STATE;
Rohit Grover 46:2bfbbe290083 315 }
Rohit Grover 46:2bfbbe290083 316 if (user_id >= m_user_count)
Rohit Grover 46:2bfbbe290083 317 {
Rohit Grover 46:2bfbbe290083 318 return NRF_ERROR_INVALID_PARAM;
Rohit Grover 46:2bfbbe290083 319 }
Rohit Grover 46:2bfbbe290083 320
Rohit Grover 46:2bfbbe290083 321 // Get pins.
Rohit Grover 46:2bfbbe290083 322 p_user = &mp_users[user_id];
Rohit Grover 46:2bfbbe290083 323 *p_pins = NRF_GPIO->IN & p_user->pins_mask;
Rohit Grover 46:2bfbbe290083 324
Rohit Grover 46:2bfbbe290083 325 return NRF_SUCCESS;
Rohit Grover 46:2bfbbe290083 326 }
Rohit Grover 46:2bfbbe290083 327
Rohit Grover 46:2bfbbe290083 328 #if defined(SVCALL_AS_NORMAL_FUNCTION) || defined(SER_CONNECTIVITY)
Rohit Grover 46:2bfbbe290083 329 uint32_t app_gpiote_input_event_handler_register(const uint8_t channel,
Rohit Grover 46:2bfbbe290083 330 const uint32_t pin,
Rohit Grover 46:2bfbbe290083 331 const uint32_t polarity,
Rohit Grover 46:2bfbbe290083 332 app_gpiote_input_event_handler_t event_handler)
Rohit Grover 46:2bfbbe290083 333 {
Rohit Grover 46:2bfbbe290083 334 (void)sense_level_toggle(NULL, pin);
Rohit Grover 46:2bfbbe290083 335 return NRF_ERROR_NOT_SUPPORTED;
Rohit Grover 46:2bfbbe290083 336 }
Rohit Grover 46:2bfbbe290083 337
Rohit Grover 46:2bfbbe290083 338 uint32_t app_gpiote_input_event_handler_unregister(const uint8_t channel)
Rohit Grover 46:2bfbbe290083 339 {
Rohit Grover 46:2bfbbe290083 340 return NRF_ERROR_NOT_SUPPORTED;
Rohit Grover 46:2bfbbe290083 341 }
Rohit Grover 46:2bfbbe290083 342
Rohit Grover 46:2bfbbe290083 343 uint32_t app_gpiote_end_irq_event_handler_register(app_gpiote_input_event_handler_t event_handler)
Rohit Grover 46:2bfbbe290083 344 {
Rohit Grover 46:2bfbbe290083 345 return NRF_ERROR_NOT_SUPPORTED;
Rohit Grover 46:2bfbbe290083 346 }
Rohit Grover 46:2bfbbe290083 347
Rohit Grover 46:2bfbbe290083 348 uint32_t app_gpiote_end_irq_event_handler_unregister(void)
Rohit Grover 46:2bfbbe290083 349 {
Rohit Grover 46:2bfbbe290083 350 return NRF_ERROR_NOT_SUPPORTED;
Rohit Grover 46:2bfbbe290083 351 }
Rohit Grover 46:2bfbbe290083 352
Rohit Grover 46:2bfbbe290083 353 uint32_t app_gpiote_enable_interrupts(void)
Rohit Grover 46:2bfbbe290083 354 {
Rohit Grover 46:2bfbbe290083 355 return NRF_ERROR_NOT_SUPPORTED;
Rohit Grover 46:2bfbbe290083 356 }
Rohit Grover 46:2bfbbe290083 357
Rohit Grover 46:2bfbbe290083 358 uint32_t app_gpiote_disable_interrupts(void)
Rohit Grover 46:2bfbbe290083 359 {
Rohit Grover 46:2bfbbe290083 360 return NRF_ERROR_NOT_SUPPORTED;
Rohit Grover 46:2bfbbe290083 361 }
Rohit Grover 46:2bfbbe290083 362 #endif // SVCALL_AS_NORMAL_FUNCTION || SER_CONNECTIVITY
Rohit Grover 56:a1071b629aa3 363
Rohit Grover 56:a1071b629aa3 364 #endif // #if NEED_APP_GPIOTE