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TARGET_SDT51822B/TOOLCHAIN_IAR/nrf_twi.h@172:65be27845400, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 20:53:29 2019 +0000
Revision:
172:65be27845400
Parent:
171:3a7713b1edbc 
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 143:86740a56073b 1 /*
AnnaBridge 143:86740a56073b 2 * Copyright (c) 2015 Nordic Semiconductor ASA
AnnaBridge 143:86740a56073b 3 * All rights reserved.
AnnaBridge 143:86740a56073b 4 *
AnnaBridge 143:86740a56073b 5 * Redistribution and use in source and binary forms, with or without modification,
AnnaBridge 143:86740a56073b 6 * are permitted provided that the following conditions are met:
AnnaBridge 143:86740a56073b 7 *
AnnaBridge 143:86740a56073b 8 * 1. Redistributions of source code must retain the above copyright notice, this list
AnnaBridge 143:86740a56073b 9 * of conditions and the following disclaimer.
AnnaBridge 143:86740a56073b 10 *
AnnaBridge 143:86740a56073b 11 * 2. Redistributions in binary form, except as embedded into a Nordic Semiconductor ASA
AnnaBridge 143:86740a56073b 12 * integrated circuit in a product or a software update for such product, must reproduce
AnnaBridge 143:86740a56073b 13 * the above copyright notice, this list of conditions and the following disclaimer in
AnnaBridge 143:86740a56073b 14 * the documentation and/or other materials provided with the distribution.
AnnaBridge 143:86740a56073b 15 *
AnnaBridge 143:86740a56073b 16 * 3. Neither the name of Nordic Semiconductor ASA nor the names of its contributors may be
AnnaBridge 143:86740a56073b 17 * used to endorse or promote products derived from this software without specific prior
AnnaBridge 143:86740a56073b 18 * written permission.
AnnaBridge 143:86740a56073b 19 *
AnnaBridge 143:86740a56073b 20 * 4. This software, with or without modification, must only be used with a
AnnaBridge 143:86740a56073b 21 * Nordic Semiconductor ASA integrated circuit.
AnnaBridge 143:86740a56073b 22 *
AnnaBridge 143:86740a56073b 23 * 5. Any software provided in binary or object form under this license must not be reverse
AnnaBridge 143:86740a56073b 24 * engineered, decompiled, modified and/or disassembled.
AnnaBridge 143:86740a56073b 25 *
AnnaBridge 143:86740a56073b 26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
AnnaBridge 143:86740a56073b 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
AnnaBridge 143:86740a56073b 28 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
AnnaBridge 143:86740a56073b 29 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
AnnaBridge 143:86740a56073b 30 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
AnnaBridge 143:86740a56073b 31 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
AnnaBridge 143:86740a56073b 32 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
AnnaBridge 143:86740a56073b 33 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
AnnaBridge 143:86740a56073b 34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
AnnaBridge 143:86740a56073b 35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
AnnaBridge 143:86740a56073b 36 *
AnnaBridge 143:86740a56073b 37 */
AnnaBridge 143:86740a56073b 38
AnnaBridge 143:86740a56073b 39
AnnaBridge 143:86740a56073b 40 #ifndef NRF_TWI_H__
AnnaBridge 143:86740a56073b 41 #define NRF_TWI_H__
AnnaBridge 143:86740a56073b 42
AnnaBridge 143:86740a56073b 43 /**
AnnaBridge 143:86740a56073b 44 * @defgroup nrf_twi_hal TWI HAL
AnnaBridge 143:86740a56073b 45 * @{
AnnaBridge 143:86740a56073b 46 * @ingroup nrf_twi_master
AnnaBridge 143:86740a56073b 47 *
AnnaBridge 143:86740a56073b 48 * @brief Hardware access layer for managing the TWI peripheral.
AnnaBridge 143:86740a56073b 49 */
AnnaBridge 143:86740a56073b 50
AnnaBridge 143:86740a56073b 51 #include <stdint.h>
AnnaBridge 143:86740a56073b 52 #include <stddef.h>
AnnaBridge 143:86740a56073b 53 #include <stdbool.h>
AnnaBridge 143:86740a56073b 54
AnnaBridge 143:86740a56073b 55 #include "nrf.h"
AnnaBridge 143:86740a56073b 56
AnnaBridge 143:86740a56073b 57 /**
AnnaBridge 143:86740a56073b 58 * @brief TWI tasks.
AnnaBridge 143:86740a56073b 59 */
AnnaBridge 143:86740a56073b 60 typedef enum
AnnaBridge 143:86740a56073b 61 {
AnnaBridge 143:86740a56073b 62 /*lint -save -e30*/
AnnaBridge 143:86740a56073b 63 NRF_TWI_TASK_STARTRX = offsetof(NRF_TWI_Type, TASKS_STARTRX), ///< Start TWI receive sequence.
AnnaBridge 143:86740a56073b 64 NRF_TWI_TASK_STARTTX = offsetof(NRF_TWI_Type, TASKS_STARTTX), ///< Start TWI transmit sequence.
AnnaBridge 143:86740a56073b 65 NRF_TWI_TASK_STOP = offsetof(NRF_TWI_Type, TASKS_STOP), ///< Stop TWI transaction.
AnnaBridge 143:86740a56073b 66 NRF_TWI_TASK_SUSPEND = offsetof(NRF_TWI_Type, TASKS_SUSPEND), ///< Suspend TWI transaction.
AnnaBridge 143:86740a56073b 67 NRF_TWI_TASK_RESUME = offsetof(NRF_TWI_Type, TASKS_RESUME) ///< Resume TWI transaction.
AnnaBridge 143:86740a56073b 68 /*lint -restore*/
AnnaBridge 143:86740a56073b 69 } nrf_twi_task_t;
AnnaBridge 143:86740a56073b 70
AnnaBridge 143:86740a56073b 71 /**
AnnaBridge 143:86740a56073b 72 * @brief TWI events.
AnnaBridge 143:86740a56073b 73 */
AnnaBridge 143:86740a56073b 74 typedef enum
AnnaBridge 143:86740a56073b 75 {
AnnaBridge 143:86740a56073b 76 /*lint -save -e30*/
AnnaBridge 143:86740a56073b 77 NRF_TWI_EVENT_STOPPED = offsetof(NRF_TWI_Type, EVENTS_STOPPED), ///< TWI stopped.
AnnaBridge 143:86740a56073b 78 NRF_TWI_EVENT_RXDREADY = offsetof(NRF_TWI_Type, EVENTS_RXDREADY), ///< TWI RXD byte received.
AnnaBridge 143:86740a56073b 79 NRF_TWI_EVENT_TXDSENT = offsetof(NRF_TWI_Type, EVENTS_TXDSENT), ///< TWI TXD byte sent.
AnnaBridge 143:86740a56073b 80 NRF_TWI_EVENT_ERROR = offsetof(NRF_TWI_Type, EVENTS_ERROR), ///< TWI error.
AnnaBridge 143:86740a56073b 81 NRF_TWI_EVENT_BB = offsetof(NRF_TWI_Type, EVENTS_BB), ///< TWI byte boundary, generated before each byte that is sent or received.
AnnaBridge 143:86740a56073b 82 NRF_TWI_EVENT_SUSPENDED = offsetof(NRF_TWI_Type, EVENTS_SUSPENDED) ///< TWI entered the suspended state.
AnnaBridge 143:86740a56073b 83 /*lint -restore*/
AnnaBridge 143:86740a56073b 84 } nrf_twi_event_t;
AnnaBridge 143:86740a56073b 85
AnnaBridge 143:86740a56073b 86 /**
AnnaBridge 143:86740a56073b 87 * @brief TWI shortcuts.
AnnaBridge 143:86740a56073b 88 */
AnnaBridge 143:86740a56073b 89 typedef enum
AnnaBridge 143:86740a56073b 90 {
AnnaBridge 143:86740a56073b 91 NRF_TWI_SHORT_BB_SUSPEND_MASK = TWI_SHORTS_BB_SUSPEND_Msk, ///< Shortcut between BB event and SUSPEND task.
AnnaBridge 143:86740a56073b 92 NRF_TWI_SHORT_BB_STOP_MASK = TWI_SHORTS_BB_STOP_Msk, ///< Shortcut between BB event and STOP task.
AnnaBridge 143:86740a56073b 93 } nrf_twi_short_mask_t;
AnnaBridge 143:86740a56073b 94
AnnaBridge 143:86740a56073b 95 /**
AnnaBridge 143:86740a56073b 96 * @brief TWI interrupts.
AnnaBridge 143:86740a56073b 97 */
AnnaBridge 143:86740a56073b 98 typedef enum
AnnaBridge 143:86740a56073b 99 {
AnnaBridge 143:86740a56073b 100 NRF_TWI_INT_STOPPED_MASK = TWI_INTENSET_STOPPED_Msk, ///< Interrupt on STOPPED event.
AnnaBridge 143:86740a56073b 101 NRF_TWI_INT_RXDREADY_MASK = TWI_INTENSET_RXDREADY_Msk, ///< Interrupt on RXDREADY event.
AnnaBridge 143:86740a56073b 102 NRF_TWI_INT_TXDSENT_MASK = TWI_INTENSET_TXDSENT_Msk, ///< Interrupt on TXDSENT event.
AnnaBridge 143:86740a56073b 103 NRF_TWI_INT_ERROR_MASK = TWI_INTENSET_ERROR_Msk, ///< Interrupt on ERROR event.
AnnaBridge 143:86740a56073b 104 NRF_TWI_INT_BB_MASK = TWI_INTENSET_BB_Msk, ///< Interrupt on BB event.
AnnaBridge 143:86740a56073b 105 NRF_TWI_INT_SUSPENDED_MASK = TWI_INTENSET_SUSPENDED_Msk ///< Interrupt on SUSPENDED event.
AnnaBridge 143:86740a56073b 106 } nrf_twi_int_mask_t;
AnnaBridge 143:86740a56073b 107
AnnaBridge 143:86740a56073b 108 /**
AnnaBridge 143:86740a56073b 109 * @brief TWI error source.
AnnaBridge 143:86740a56073b 110 */
AnnaBridge 143:86740a56073b 111 typedef enum
AnnaBridge 143:86740a56073b 112 {
AnnaBridge 143:86740a56073b 113 NRF_TWI_ERROR_ADDRESS_NACK = TWI_ERRORSRC_ANACK_Msk, ///< NACK received after sending the address.
AnnaBridge 143:86740a56073b 114 NRF_TWI_ERROR_DATA_NACK = TWI_ERRORSRC_DNACK_Msk, ///< NACK received after sending a data byte.
AnnaBridge 143:86740a56073b 115 NRF_TWI_ERROR_OVERRUN = TWI_ERRORSRC_OVERRUN_Msk ///< Overrun error.
AnnaBridge 143:86740a56073b 116 /**< A new byte was received before the previous byte was read
AnnaBridge 143:86740a56073b 117 * from the RXD register (previous data is lost). */
AnnaBridge 143:86740a56073b 118 } nrf_twi_error_t;
AnnaBridge 143:86740a56073b 119
AnnaBridge 143:86740a56073b 120 /**
AnnaBridge 143:86740a56073b 121 * @brief TWI master clock frequency.
AnnaBridge 143:86740a56073b 122 */
AnnaBridge 143:86740a56073b 123 typedef enum
AnnaBridge 143:86740a56073b 124 {
AnnaBridge 143:86740a56073b 125 NRF_TWI_FREQ_100K = TWI_FREQUENCY_FREQUENCY_K100, ///< 100 kbps.
AnnaBridge 143:86740a56073b 126 NRF_TWI_FREQ_250K = TWI_FREQUENCY_FREQUENCY_K250, ///< 250 kbps.
AnnaBridge 143:86740a56073b 127 NRF_TWI_FREQ_400K = TWI_FREQUENCY_FREQUENCY_K400 ///< 400 kbps.
AnnaBridge 143:86740a56073b 128 } nrf_twi_frequency_t;
AnnaBridge 143:86740a56073b 129
AnnaBridge 143:86740a56073b 130
AnnaBridge 143:86740a56073b 131 /**
AnnaBridge 143:86740a56073b 132 * @brief Function for activating a specific TWI task.
AnnaBridge 143:86740a56073b 133 *
AnnaBridge 143:86740a56073b 134 * @param[in] p_twi TWI instance.
AnnaBridge 143:86740a56073b 135 * @param[in] task Task to activate.
AnnaBridge 143:86740a56073b 136 */
AnnaBridge 143:86740a56073b 137 __STATIC_INLINE void nrf_twi_task_trigger(NRF_TWI_Type * p_twi,
AnnaBridge 143:86740a56073b 138 nrf_twi_task_t task);
AnnaBridge 143:86740a56073b 139
AnnaBridge 143:86740a56073b 140 /**
AnnaBridge 143:86740a56073b 141 * @brief Function for getting the address of a specific TWI task register.
AnnaBridge 143:86740a56073b 142 *
AnnaBridge 143:86740a56073b 143 * @param[in] p_twi TWI instance.
AnnaBridge 143:86740a56073b 144 * @param[in] task Requested task.
AnnaBridge 143:86740a56073b 145 *
AnnaBridge 143:86740a56073b 146 * @return Address of the specified task register.
AnnaBridge 143:86740a56073b 147 */
AnnaBridge 143:86740a56073b 148 __STATIC_INLINE uint32_t * nrf_twi_task_address_get(NRF_TWI_Type * p_twi,
AnnaBridge 143:86740a56073b 149 nrf_twi_task_t task);
AnnaBridge 143:86740a56073b 150
AnnaBridge 143:86740a56073b 151 /**
AnnaBridge 143:86740a56073b 152 * @brief Function for clearing a specific TWI event.
AnnaBridge 143:86740a56073b 153 *
AnnaBridge 143:86740a56073b 154 * @param[in] p_twi TWI instance.
AnnaBridge 143:86740a56073b 155 * @param[in] event Event to clear.
AnnaBridge 143:86740a56073b 156 */
AnnaBridge 143:86740a56073b 157 __STATIC_INLINE void nrf_twi_event_clear(NRF_TWI_Type * p_twi,
AnnaBridge 143:86740a56073b 158 nrf_twi_event_t event);
AnnaBridge 143:86740a56073b 159
AnnaBridge 143:86740a56073b 160 /**
AnnaBridge 143:86740a56073b 161 * @brief Function for checking the state of a specific event.
AnnaBridge 143:86740a56073b 162 *
AnnaBridge 143:86740a56073b 163 * @param[in] p_twi TWI instance.
AnnaBridge 143:86740a56073b 164 * @param[in] event Event to check.
AnnaBridge 143:86740a56073b 165 *
AnnaBridge 143:86740a56073b 166 * @retval true If the event is set.
AnnaBridge 143:86740a56073b 167 * @retval false If the event is not set.
AnnaBridge 143:86740a56073b 168 */
AnnaBridge 143:86740a56073b 169 __STATIC_INLINE bool nrf_twi_event_check(NRF_TWI_Type * p_twi,
AnnaBridge 143:86740a56073b 170 nrf_twi_event_t event);
AnnaBridge 143:86740a56073b 171
AnnaBridge 143:86740a56073b 172 /**
AnnaBridge 143:86740a56073b 173 * @brief Function for getting the address of a specific TWI event register.
AnnaBridge 143:86740a56073b 174 *
AnnaBridge 143:86740a56073b 175 * @param[in] p_twi TWI instance.
AnnaBridge 143:86740a56073b 176 * @param[in] event Requested event.
AnnaBridge 143:86740a56073b 177 *
AnnaBridge 143:86740a56073b 178 * @return Address of the specified event register.
AnnaBridge 143:86740a56073b 179 */
AnnaBridge 143:86740a56073b 180 __STATIC_INLINE uint32_t * nrf_twi_event_address_get(NRF_TWI_Type * p_twi,
AnnaBridge 143:86740a56073b 181 nrf_twi_event_t event);
AnnaBridge 143:86740a56073b 182
AnnaBridge 143:86740a56073b 183 /**
AnnaBridge 143:86740a56073b 184 * @brief Function for enabling specified shortcuts.
AnnaBridge 143:86740a56073b 185 *
AnnaBridge 143:86740a56073b 186 * @param[in] p_twi TWI instance.
AnnaBridge 143:86740a56073b 187 * @param[in] shorts_mask Shortcuts to enable.
AnnaBridge 143:86740a56073b 188 */
AnnaBridge 143:86740a56073b 189 __STATIC_INLINE void nrf_twi_shorts_enable(NRF_TWI_Type * p_twi,
AnnaBridge 143:86740a56073b 190 uint32_t shorts_mask);
AnnaBridge 143:86740a56073b 191
AnnaBridge 143:86740a56073b 192 /**
AnnaBridge 143:86740a56073b 193 * @brief Function for disabling specified shortcuts.
AnnaBridge 143:86740a56073b 194 *
AnnaBridge 143:86740a56073b 195 * @param[in] p_twi TWI instance.
AnnaBridge 143:86740a56073b 196 * @param[in] shorts_mask Shortcuts to disable.
AnnaBridge 143:86740a56073b 197 */
AnnaBridge 143:86740a56073b 198 __STATIC_INLINE void nrf_twi_shorts_disable(NRF_TWI_Type * p_twi,
AnnaBridge 143:86740a56073b 199 uint32_t shorts_mask);
AnnaBridge 143:86740a56073b 200
AnnaBridge 143:86740a56073b 201 /**
AnnaBridge 143:86740a56073b 202 * @brief Function for enabling specified interrupts.
AnnaBridge 143:86740a56073b 203 *
AnnaBridge 143:86740a56073b 204 * @param[in] p_twi TWI instance.
AnnaBridge 143:86740a56073b 205 * @param[in] int_mask Interrupts to enable.
AnnaBridge 143:86740a56073b 206 */
AnnaBridge 143:86740a56073b 207 __STATIC_INLINE void nrf_twi_int_enable(NRF_TWI_Type * p_twi,
AnnaBridge 143:86740a56073b 208 uint32_t int_mask);
AnnaBridge 143:86740a56073b 209
AnnaBridge 143:86740a56073b 210 /**
AnnaBridge 143:86740a56073b 211 * @brief Function for disabling specified interrupts.
AnnaBridge 143:86740a56073b 212 *
AnnaBridge 143:86740a56073b 213 * @param[in] p_twi TWI instance.
AnnaBridge 143:86740a56073b 214 * @param[in] int_mask Interrupts to disable.
AnnaBridge 143:86740a56073b 215 */
AnnaBridge 143:86740a56073b 216 __STATIC_INLINE void nrf_twi_int_disable(NRF_TWI_Type * p_twi,
AnnaBridge 143:86740a56073b 217 uint32_t int_mask);
AnnaBridge 143:86740a56073b 218
AnnaBridge 143:86740a56073b 219 /**
AnnaBridge 143:86740a56073b 220 * @brief Function for retrieving the state of a given interrupt.
AnnaBridge 143:86740a56073b 221 *
AnnaBridge 143:86740a56073b 222 * @param[in] p_twi TWI instance.
AnnaBridge 143:86740a56073b 223 * @param[in] int_mask Interrupt to check.
AnnaBridge 143:86740a56073b 224 *
AnnaBridge 143:86740a56073b 225 * @retval true If the interrupt is enabled.
AnnaBridge 143:86740a56073b 226 * @retval false If the interrupt is not enabled.
AnnaBridge 143:86740a56073b 227 */
AnnaBridge 143:86740a56073b 228 __STATIC_INLINE bool nrf_twi_int_enable_check(NRF_TWI_Type * p_twi,
AnnaBridge 143:86740a56073b 229 nrf_twi_int_mask_t int_mask);
AnnaBridge 143:86740a56073b 230
AnnaBridge 143:86740a56073b 231 /**
AnnaBridge 143:86740a56073b 232 * @brief Function for enabling the TWI peripheral.
AnnaBridge 143:86740a56073b 233 *
AnnaBridge 143:86740a56073b 234 * @param[in] p_twi TWI instance.
AnnaBridge 143:86740a56073b 235 */
AnnaBridge 143:86740a56073b 236 __STATIC_INLINE void nrf_twi_enable(NRF_TWI_Type * p_twi);
AnnaBridge 143:86740a56073b 237
AnnaBridge 143:86740a56073b 238 /**
AnnaBridge 143:86740a56073b 239 * @brief Function for disabling the TWI peripheral.
AnnaBridge 143:86740a56073b 240 *
AnnaBridge 143:86740a56073b 241 * @param[in] p_twi TWI instance.
AnnaBridge 143:86740a56073b 242 */
AnnaBridge 143:86740a56073b 243 __STATIC_INLINE void nrf_twi_disable(NRF_TWI_Type * p_twi);
AnnaBridge 143:86740a56073b 244
AnnaBridge 143:86740a56073b 245 /**
AnnaBridge 143:86740a56073b 246 * @brief Function for configuring TWI pins.
AnnaBridge 143:86740a56073b 247 *
AnnaBridge 143:86740a56073b 248 *
AnnaBridge 143:86740a56073b 249 * @param[in] p_twi TWI instance.
AnnaBridge 143:86740a56073b 250 * @param[in] scl_pin SCL pin number.
AnnaBridge 143:86740a56073b 251 * @param[in] sda_pin SDA pin number.
AnnaBridge 143:86740a56073b 252 */
AnnaBridge 143:86740a56073b 253 __STATIC_INLINE void nrf_twi_pins_set(NRF_TWI_Type * p_twi,
AnnaBridge 143:86740a56073b 254 uint32_t scl_pin,
AnnaBridge 143:86740a56073b 255 uint32_t sda_pin);
AnnaBridge 143:86740a56073b 256
AnnaBridge 143:86740a56073b 257 /**
AnnaBridge 143:86740a56073b 258 * @brief Function for setting the TWI master clock frequency.
AnnaBridge 143:86740a56073b 259 *
AnnaBridge 143:86740a56073b 260 * @param[in] p_twi TWI instance.
AnnaBridge 143:86740a56073b 261 * @param[in] frequency TWI frequency.
AnnaBridge 143:86740a56073b 262 */
AnnaBridge 143:86740a56073b 263 __STATIC_INLINE void nrf_twi_frequency_set(NRF_TWI_Type * p_twi,
AnnaBridge 143:86740a56073b 264 nrf_twi_frequency_t frequency);
AnnaBridge 143:86740a56073b 265
AnnaBridge 143:86740a56073b 266 /**
AnnaBridge 143:86740a56073b 267 * @brief Function for checking the TWI error source.
AnnaBridge 143:86740a56073b 268 *
AnnaBridge 143:86740a56073b 269 * The error flags are cleared after reading.
AnnaBridge 143:86740a56073b 270 *
AnnaBridge 143:86740a56073b 271 * @param[in] p_twi TWI instance.
AnnaBridge 143:86740a56073b 272 *
AnnaBridge 143:86740a56073b 273 * @return Mask with error source flags.
AnnaBridge 143:86740a56073b 274 */
AnnaBridge 143:86740a56073b 275 __STATIC_INLINE uint32_t nrf_twi_errorsrc_get_and_clear(NRF_TWI_Type * p_twi);
AnnaBridge 143:86740a56073b 276
AnnaBridge 143:86740a56073b 277 /**
AnnaBridge 143:86740a56073b 278 * @brief Function for setting the address to be used in TWI transfers.
AnnaBridge 143:86740a56073b 279 *
AnnaBridge 143:86740a56073b 280 * @param[in] p_twi TWI instance.
AnnaBridge 143:86740a56073b 281 * @param[in] address Address to be used in transfers.
AnnaBridge 143:86740a56073b 282 */
AnnaBridge 143:86740a56073b 283 __STATIC_INLINE void nrf_twi_address_set(NRF_TWI_Type * p_twi, uint8_t address);
AnnaBridge 143:86740a56073b 284
AnnaBridge 143:86740a56073b 285 /**
AnnaBridge 143:86740a56073b 286 * @brief Function for reading data received by TWI.
AnnaBridge 143:86740a56073b 287 *
AnnaBridge 143:86740a56073b 288 * @param[in] p_twi TWI instance.
AnnaBridge 143:86740a56073b 289 *
AnnaBridge 143:86740a56073b 290 * @return Received data.
AnnaBridge 143:86740a56073b 291 */
AnnaBridge 143:86740a56073b 292 __STATIC_INLINE uint8_t nrf_twi_rxd_get(NRF_TWI_Type * p_twi);
AnnaBridge 143:86740a56073b 293
AnnaBridge 143:86740a56073b 294 /**
AnnaBridge 143:86740a56073b 295 * @brief Function for writing data to be transmitted by TWI.
AnnaBridge 143:86740a56073b 296 *
AnnaBridge 143:86740a56073b 297 * @param[in] p_twi TWI instance.
AnnaBridge 143:86740a56073b 298 * @param[in] data Data to be transmitted.
AnnaBridge 143:86740a56073b 299 */
AnnaBridge 143:86740a56073b 300 __STATIC_INLINE void nrf_twi_txd_set(NRF_TWI_Type * p_twi, uint8_t data);
AnnaBridge 143:86740a56073b 301
AnnaBridge 143:86740a56073b 302 __STATIC_INLINE void nrf_twi_shorts_set(NRF_TWI_Type * p_twi,
AnnaBridge 143:86740a56073b 303 uint32_t shorts_mask);
AnnaBridge 143:86740a56073b 304
AnnaBridge 143:86740a56073b 305 /**
AnnaBridge 143:86740a56073b 306 * @}
AnnaBridge 143:86740a56073b 307 */
AnnaBridge 143:86740a56073b 308
AnnaBridge 143:86740a56073b 309
AnnaBridge 143:86740a56073b 310 #ifndef SUPPRESS_INLINE_IMPLEMENTATION
AnnaBridge 143:86740a56073b 311
AnnaBridge 143:86740a56073b 312 __STATIC_INLINE void nrf_twi_task_trigger(NRF_TWI_Type * p_twi,
AnnaBridge 143:86740a56073b 313 nrf_twi_task_t task)
AnnaBridge 143:86740a56073b 314 {
AnnaBridge 143:86740a56073b 315 *((volatile uint32_t *)((uint8_t *)p_twi + (uint32_t)task)) = 0x1UL;
AnnaBridge 143:86740a56073b 316 }
AnnaBridge 143:86740a56073b 317
AnnaBridge 143:86740a56073b 318 __STATIC_INLINE uint32_t * nrf_twi_task_address_get(NRF_TWI_Type * p_twi,
AnnaBridge 143:86740a56073b 319 nrf_twi_task_t task)
AnnaBridge 143:86740a56073b 320 {
AnnaBridge 143:86740a56073b 321 return (uint32_t *)((uint8_t *)p_twi + (uint32_t)task);
AnnaBridge 143:86740a56073b 322 }
AnnaBridge 143:86740a56073b 323
AnnaBridge 143:86740a56073b 324 __STATIC_INLINE void nrf_twi_event_clear(NRF_TWI_Type * p_twi,
AnnaBridge 143:86740a56073b 325 nrf_twi_event_t event)
AnnaBridge 143:86740a56073b 326 {
AnnaBridge 143:86740a56073b 327 *((volatile uint32_t *)((uint8_t *)p_twi + (uint32_t)event)) = 0x0UL;
AnnaBridge 143:86740a56073b 328 }
AnnaBridge 143:86740a56073b 329
AnnaBridge 143:86740a56073b 330 __STATIC_INLINE bool nrf_twi_event_check(NRF_TWI_Type * p_twi,
AnnaBridge 143:86740a56073b 331 nrf_twi_event_t event)
AnnaBridge 143:86740a56073b 332 {
AnnaBridge 143:86740a56073b 333 return (bool)*(volatile uint32_t *)((uint8_t *)p_twi + (uint32_t)event);
AnnaBridge 143:86740a56073b 334 }
AnnaBridge 143:86740a56073b 335
AnnaBridge 143:86740a56073b 336 __STATIC_INLINE uint32_t * nrf_twi_event_address_get(NRF_TWI_Type * p_twi,
AnnaBridge 143:86740a56073b 337 nrf_twi_event_t event)
AnnaBridge 143:86740a56073b 338 {
AnnaBridge 143:86740a56073b 339 return (uint32_t *)((uint8_t *)p_twi + (uint32_t)event);
AnnaBridge 143:86740a56073b 340 }
AnnaBridge 143:86740a56073b 341
AnnaBridge 143:86740a56073b 342 __STATIC_INLINE void nrf_twi_shorts_enable(NRF_TWI_Type * p_twi,
AnnaBridge 143:86740a56073b 343 uint32_t shorts_mask)
AnnaBridge 143:86740a56073b 344 {
AnnaBridge 143:86740a56073b 345 p_twi->SHORTS |= shorts_mask;
AnnaBridge 143:86740a56073b 346 }
AnnaBridge 143:86740a56073b 347
AnnaBridge 143:86740a56073b 348 __STATIC_INLINE void nrf_twi_shorts_disable(NRF_TWI_Type * p_twi,
AnnaBridge 143:86740a56073b 349 uint32_t shorts_mask)
AnnaBridge 143:86740a56073b 350 {
AnnaBridge 143:86740a56073b 351 p_twi->SHORTS &= ~(shorts_mask);
AnnaBridge 143:86740a56073b 352 }
AnnaBridge 143:86740a56073b 353
AnnaBridge 143:86740a56073b 354 __STATIC_INLINE void nrf_twi_int_enable(NRF_TWI_Type * p_twi,
AnnaBridge 143:86740a56073b 355 uint32_t int_mask)
AnnaBridge 143:86740a56073b 356 {
AnnaBridge 143:86740a56073b 357 p_twi->INTENSET = int_mask;
AnnaBridge 143:86740a56073b 358 }
AnnaBridge 143:86740a56073b 359
AnnaBridge 143:86740a56073b 360 __STATIC_INLINE void nrf_twi_int_disable(NRF_TWI_Type * p_twi,
AnnaBridge 143:86740a56073b 361 uint32_t int_mask)
AnnaBridge 143:86740a56073b 362 {
AnnaBridge 143:86740a56073b 363 p_twi->INTENCLR = int_mask;
AnnaBridge 143:86740a56073b 364 }
AnnaBridge 143:86740a56073b 365
AnnaBridge 143:86740a56073b 366 __STATIC_INLINE bool nrf_twi_int_enable_check(NRF_TWI_Type * p_twi,
AnnaBridge 143:86740a56073b 367 nrf_twi_int_mask_t int_mask)
AnnaBridge 143:86740a56073b 368 {
AnnaBridge 143:86740a56073b 369 return (bool)(p_twi->INTENSET & int_mask);
AnnaBridge 143:86740a56073b 370 }
AnnaBridge 143:86740a56073b 371
AnnaBridge 143:86740a56073b 372 __STATIC_INLINE void nrf_twi_enable(NRF_TWI_Type * p_twi)
AnnaBridge 143:86740a56073b 373 {
AnnaBridge 143:86740a56073b 374 p_twi->ENABLE = (TWI_ENABLE_ENABLE_Enabled << TWI_ENABLE_ENABLE_Pos);
AnnaBridge 143:86740a56073b 375 }
AnnaBridge 143:86740a56073b 376
AnnaBridge 143:86740a56073b 377 __STATIC_INLINE void nrf_twi_disable(NRF_TWI_Type * p_twi)
AnnaBridge 143:86740a56073b 378 {
AnnaBridge 143:86740a56073b 379 p_twi->ENABLE = (TWI_ENABLE_ENABLE_Disabled << TWI_ENABLE_ENABLE_Pos);
AnnaBridge 143:86740a56073b 380 }
AnnaBridge 143:86740a56073b 381
AnnaBridge 143:86740a56073b 382 __STATIC_INLINE void nrf_twi_pins_set(NRF_TWI_Type * p_twi,
AnnaBridge 143:86740a56073b 383 uint32_t scl_pin,
AnnaBridge 143:86740a56073b 384 uint32_t sda_pin)
AnnaBridge 143:86740a56073b 385 {
AnnaBridge 143:86740a56073b 386 p_twi->PSELSCL = scl_pin;
AnnaBridge 143:86740a56073b 387 p_twi->PSELSDA = sda_pin;
AnnaBridge 143:86740a56073b 388 }
AnnaBridge 143:86740a56073b 389
AnnaBridge 143:86740a56073b 390 __STATIC_INLINE void nrf_twi_frequency_set(NRF_TWI_Type * p_twi,
AnnaBridge 143:86740a56073b 391 nrf_twi_frequency_t frequency)
AnnaBridge 143:86740a56073b 392 {
AnnaBridge 143:86740a56073b 393 p_twi->FREQUENCY = frequency;
AnnaBridge 143:86740a56073b 394 }
AnnaBridge 143:86740a56073b 395
AnnaBridge 143:86740a56073b 396 __STATIC_INLINE uint32_t nrf_twi_errorsrc_get_and_clear(NRF_TWI_Type * p_twi)
AnnaBridge 143:86740a56073b 397 {
AnnaBridge 143:86740a56073b 398 uint32_t error_source = p_twi->ERRORSRC;
AnnaBridge 143:86740a56073b 399
AnnaBridge 143:86740a56073b 400 // [error flags are cleared by writing '1' on their position]
AnnaBridge 143:86740a56073b 401 p_twi->ERRORSRC = error_source;
AnnaBridge 143:86740a56073b 402
AnnaBridge 143:86740a56073b 403 return error_source;
AnnaBridge 143:86740a56073b 404 }
AnnaBridge 143:86740a56073b 405
AnnaBridge 143:86740a56073b 406 __STATIC_INLINE void nrf_twi_address_set(NRF_TWI_Type * p_twi, uint8_t address)
AnnaBridge 143:86740a56073b 407 {
AnnaBridge 143:86740a56073b 408 p_twi->ADDRESS = address;
AnnaBridge 143:86740a56073b 409 }
AnnaBridge 143:86740a56073b 410
AnnaBridge 143:86740a56073b 411 __STATIC_INLINE uint8_t nrf_twi_rxd_get(NRF_TWI_Type * p_twi)
AnnaBridge 143:86740a56073b 412 {
AnnaBridge 143:86740a56073b 413 return (uint8_t)p_twi->RXD;
AnnaBridge 143:86740a56073b 414 }
AnnaBridge 143:86740a56073b 415
AnnaBridge 143:86740a56073b 416 __STATIC_INLINE void nrf_twi_txd_set(NRF_TWI_Type * p_twi, uint8_t data)
AnnaBridge 143:86740a56073b 417 {
AnnaBridge 143:86740a56073b 418 p_twi->TXD = data;
AnnaBridge 143:86740a56073b 419 }
AnnaBridge 143:86740a56073b 420
AnnaBridge 143:86740a56073b 421 __STATIC_INLINE void nrf_twi_shorts_set(NRF_TWI_Type * p_twi,
AnnaBridge 143:86740a56073b 422 uint32_t shorts_mask)
AnnaBridge 143:86740a56073b 423 {
AnnaBridge 143:86740a56073b 424 p_twi->SHORTS = shorts_mask;
AnnaBridge 143:86740a56073b 425 }
AnnaBridge 143:86740a56073b 426
AnnaBridge 143:86740a56073b 427 #endif // SUPPRESS_INLINE_IMPLEMENTATION
AnnaBridge 143:86740a56073b 428
AnnaBridge 143:86740a56073b 429 #endif // NRF_TWI_H__