1 /* Copyright (c) 2014, Nordic Semiconductor ASA
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3 * Permission is hereby granted, free of charge, to any person obtaining a copy
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4 * of this software and associated documentation files (the "Software"), to deal
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5 * in the Software without restriction, including without limitation the rights
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6 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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7 * copies of the Software, and to permit persons to whom the Software is
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8 * furnished to do so, subject to the following conditions:
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10 * The above copyright notice and this permission notice shall be included in all
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11 * copies or substantial portions of the Software.
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13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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18 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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26 * @brief ACI library
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29 /** @addtogroup lib_aci
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31 @brief Library for the logical part of the Application Controller Interface (ACI)
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38 #include "hal_platform.h"
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39 #include "hal_aci_tl.h"
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40 #include "aci_queue.h"
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42 #include "aci_cmds.h"
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43 #include "aci_evts.h"
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45 #define EVT_CMD_RESPONSE_MIN_LENGTH 3
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47 #define PIPES_ARRAY_SIZE ((ACI_DEVICE_MAX_PIPES + 7)/8)
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49 /* Same size as a hal_aci_data_t */
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53 } _aci_packed_ hal_aci_evt_t;
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55 ACI_ASSERT_SIZE(hal_aci_evt_t, 34);
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59 uint8_t location; /**< enum aci_pipe_store_t */
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60 aci_pipe_type_t pipe_type;
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61 } services_pipe_type_mapping_t;
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63 typedef struct aci_setup_info_t
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65 services_pipe_type_mapping_t *services_pipe_type_mapping;
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66 uint8_t number_of_pipes;
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67 hal_aci_data_t *setup_msgs;
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68 uint8_t num_setup_msgs;
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73 // aci_struct that will contain
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74 // total initial credits
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76 // current state of the aci (setup/standby/active/sleep)
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77 // open remote pipe pending
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78 // close remote pipe pending
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79 // Current pipe available bitmap
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80 // Current pipe closed bitmap
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81 // Current connection interval, slave latency and link supervision timeout
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82 // Current State of the the GATT client (Service Discovery status)
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83 // Relationship of bond to peer address
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84 typedef struct aci_state_t
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86 aci_pins_t aci_pins; /* Pins on the MCU used to connect to the nRF8001 */
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87 aci_setup_info_t aci_setup_info; /* Data structures that are created from nRFgo Studio */
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88 uint8_t bonded; /* ( aci_bond_status_code_t ) Is the nRF8001 bonded to a peer device */
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89 uint8_t data_credit_total; /* Total data credit available for the specific version of the nRF8001, total equals available when a link is established */
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90 aci_device_operation_mode_t device_state; /* Operating mode of the nRF8001 */
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94 /* Start : Variables that are valid only when in a connection */
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95 uint8_t data_credit_available; /* Available data credits at a specific point of time, ACI_EVT_DATA_CREDIT updates the available credits */
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97 uint16_t connection_interval; /* Multiply by 1.25 to get the connection interval in milliseconds*/
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98 uint16_t slave_latency; /* Number of consecutive connection intervals that the nRF8001 is not required to transmit. Use this to save power */
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99 uint16_t supervision_timeout; /* Multiply by 10 to get the supervision timeout in milliseconds */
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101 uint8_t pipes_open_bitmap[PIPES_ARRAY_SIZE]; /* Bitmap -> pipes are open and can be used for sending data over the air */
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102 uint8_t pipes_closed_bitmap[PIPES_ARRAY_SIZE]; /* Bitmap -> pipes are closed and cannot be used for sending data over the air */
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103 bool confirmation_pending; /* Attribute protocol Handle Value confirmation is pending for a Handle Value Indication
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104 (ACK is pending for a TX_ACK pipe) on local GATT Server*/
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105 /* End : Variables that are valid only when in a connection */
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111 #define DISCONNECT_REASON_CX_TIMEOUT 0x08
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112 #define DISCONNECT_REASON_CX_CLOSED_BY_PEER_DEVICE 0x13
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113 #define DISCONNECT_REASON_POWER_LOSS 0x14
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114 #define DISCONNECT_REASON_CX_CLOSED_BY_LOCAL_DEVICE 0x16
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115 #define DISCONNECT_REASON_ADVERTISER_TIMEOUT 0x50
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118 /** @name Functions for library management */
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121 /** @brief Function to enable printing of all ACI commands sent and ACI events received
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122 * @details This function shall be used to enable or disable the debug printing.
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123 Debug printing is disabled by default.
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125 void lib_aci_debug_print(bool enable);
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127 /** @brief Function to pin reset the nRF8001
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128 * @details Pin resets the nRF8001 also handles differences between development boards
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130 void lib_aci_pin_reset(void);
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132 /** @brief Initialization function.
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133 * @details This function shall be used to initialize/reset ACI Library and also Resets the
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134 * nRF8001 by togging the reset pin of the nRF8001. This function will reset
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135 * all the variables locally used by ACI library to their respective default values.
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136 * @param bool True if the data was successfully queued for sending,
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137 * false if there is no more space to store messages to send.
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139 void lib_aci_init(aci_state_t *aci_stat, bool debug);
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142 /** @brief Gets the number of currently available ACI credits.
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143 * @return Number of ACI credits.
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145 uint8_t lib_aci_get_nb_available_credits(aci_state_t *aci_stat);
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147 /** @brief Gets the connection interval in milliseconds.
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148 * @return Connection interval in milliseconds.
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150 uint16_t lib_aci_get_cx_interval_ms(aci_state_t *aci_stat);
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152 /** @brief Gets the connection interval in multiple of 1.25 ms.
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153 * @return Connection interval in multiple of 1.25 ms.
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155 uint16_t lib_aci_get_cx_interval(aci_state_t *aci_stat);
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157 /** @brief Gets the current slave latency.
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158 * @return Current slave latency.
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160 uint16_t lib_aci_get_slave_latency(aci_state_t *aci_stat);
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162 /** @brief Checks if a given pipe is available.
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163 * @param pipe Pipe to check.
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164 * @return True if the pipe is available, otherwise false.
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166 bool lib_aci_is_pipe_available(aci_state_t *aci_stat, uint8_t pipe);
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168 /** @brief Checks if a given pipe is closed.
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169 * @param pipe Pipe to check.
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170 * @return True if the pipe is closed, otherwise false.
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172 bool lib_aci_is_pipe_closed(aci_state_t *aci_stat, uint8_t pipe);
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174 /** @brief Checks if the discovery operation is finished.
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175 * @return True if the discovery is finished.
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177 bool lib_aci_is_discovery_finished(aci_state_t *aci_stat);
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183 /** @name ACI Commands available in all modes */
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186 /** @brief Sets the radio in sleep mode.
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187 * @details The function sends a @c sleep command to the radio.
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188 * If the radio is advertising or connected, it sends back an error, then use lib_aci_radio_reset
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189 * if advertising or disconnect if in a connection.
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190 * @return True if the transaction is successfully initiated.
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192 bool lib_aci_sleep(void);
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194 /** @brief Resets the radio.
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195 * @details The function sends a @c BasebandReset command to the radio.
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196 * @return True if the transaction is successfully initiated.
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198 bool lib_aci_radio_reset(void);
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200 /** @brief Radio starts directed advertising to bonded device.
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201 * @details The function sends a @c DirectedConnect command to the radio.
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202 * @return True if the transaction is successfully initiated.
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204 bool lib_aci_direct_connect(void);
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206 /** @brief Gets the radio's version.
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207 * @details This function sends a @c GetDeviceVersion command.
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208 * @return True if the transaction is successfully initiated.
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210 bool lib_aci_device_version(void);
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212 /** @brief Gets the device address.
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213 * @details This function sends a @c GetDeviceAddress command.
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214 * @return True if the transaction is successfully initiated.
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216 bool lib_aci_get_address(void);
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218 /** @brief Gets the temperature.
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219 * @details This function sends a @c GetTemperature command. lib_aci
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220 * calls the @ref lib_aci_transaction_finished_hook() function when the temperature is received.
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221 * @return True if the transaction is successfully initiated.
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223 bool lib_aci_get_temperature(void);
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225 /** @brief Gets the battery level.
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226 * @details This function sends a @c GetBatteryLevel command.
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227 * @return True if the transaction is successfully initiated.
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229 bool lib_aci_get_battery_level(void);
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233 /** @name ACI commands available in Sleep mode */
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236 /** @brief Wakes up the radio.
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237 * @details This function sends a @c Wakeup command to wake up the radio from
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238 * sleep mode. When woken up the radio sends a @c DeviceStartedEvent and
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239 * a @c CommandResponseEvent.
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240 * @return True if the transaction is successfully initiated.
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242 bool lib_aci_wakeup(void);
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246 /** @name ACI commands available in Active mode */
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249 /** @brief Sets the radio in test mode.
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250 * @details This function sends a @c Test command to the radio. There are two
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251 * Test modes available:
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252 * - UART: DTM commands are received over UART.
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253 * - ACI: DTM commands are received over ACI.
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254 * The same command is used to exit the test mode When receiving
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255 * a @c DeviceStartedEvent the radio has entered the new mode.
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256 * @param enter_exit_test_mode Enter a Test mode, or exit Test mode.
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257 * @return True if the transaction is successfully initiated.
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259 bool lib_aci_test(aci_test_mode_change_t enter_exit_test_mode);
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261 /** @brief Sets the radio's TX power.
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262 * @details This function sends a @c SetTxPower command.
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263 * @param tx_power TX power to be used by the radio.
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264 * @return True if the transaction is successfully initiated.
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266 bool lib_aci_set_tx_power(aci_device_output_power_t tx_power);
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268 /** @brief Tries to connect to a peer device.
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269 * @details This function sends a @c Connect command to the radio.
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270 * @param run_timeout Maximum advertising time in seconds (0 means infinite).
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271 * @param adv_interval Advertising interval (in multiple of 0.625 ms).
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272 * @return True if the transaction is successfully initiated.
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274 bool lib_aci_connect(uint16_t run_timeout, uint16_t adv_interval);
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276 /** @brief Tries to bond with a peer device.
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277 * @details This function sends a @c Bond command to the radio.
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278 * @param run_timeout Maximum advertising time in seconds (0 means infinite).
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279 * @param adv_interval Advertising interval (in multiple of 0.625 ms).
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280 * @return True if the transaction is successfully initiated.
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282 bool lib_aci_bond(uint16_t run_timeout, uint16_t adv_interval);
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284 /** @brief Disconnects from peer device.
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285 * @details This function sends a @c Disconnect command to the radio.
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286 * @param reason Reason for disconnecting.
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287 * @return True if the transaction is successfully initiated.
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289 bool lib_aci_disconnect(aci_state_t *aci_stat, aci_disconnect_reason_t reason);
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291 /**@brief Sets Local Data.
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293 * This command updates the value of the characteristic value or the characteristic descriptor stored locally on the device.
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294 * Can be called for all types of pipes as long as the data is stored locally.
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295 * @param ACI state structure
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296 * @param pipe Pipe number on which the data should be set.
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297 * @param value Pointer to the data to set.
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298 * @param size Size of the data to set.
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299 * @return True if the transaction is successfully initiated.
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301 bool lib_aci_set_local_data(aci_state_t *aci_stat, uint8_t pipe, uint8_t *value, uint8_t size);
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303 /** @brief Sends Broadcast message to the radio.
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304 * @details The Broadcast message starts advertisement procedure
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305 * using the given interval with the intention of broadcasting data to a peer device.
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306 * @param timeout Time, in seconds, to advertise before exiting to standby mode (0 means infinite).
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307 * Valid values: 0 to 16383.
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308 * @param adv_interval Advertising interval (in multiple of 0.625 ms).
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309 * Valid values: 160 to 16384 (which corresponds to an interval from 100 ms to 10.24 s).
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310 * @return True if the broadcast message is sent successfully to the radio.
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312 bool lib_aci_broadcast(const uint16_t timeout, const uint16_t adv_interval);
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314 /** @name Open Advertising Pipes. */
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316 /** @brief Sends a command to the radio to set the input pipe to be placed in Advertisement Service Data.
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317 * @details This function sends a command to the radio that places the pipe in
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318 * advertisement service data. To start advertising service data, call this function before
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319 * Connecting, Broadcasting or Bonding to peer. The data that should be sent in the advertisement packets
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320 * must be set using the @c lib_aci_set_local_data function. This function can be called during
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321 * advertising to enable/disable broadcast pipes.
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322 * @param pipe The pipe that has to be placed in advertising service data.
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323 * @return True if the Open Adv Pipe message is sent successfully to the radio.
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325 bool lib_aci_open_adv_pipe(const uint8_t pipe);
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328 /** @name Open Advertising Pipes */
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330 /** @brief Sends a command to the radio to set the pipes to be placed in Advertisement Service Data.
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331 * @details This function will send a command to the radio that will set the pipes to be placed in
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332 * advertisement Service Data. To start advertising service data, this function should be called before
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333 * Connecting, Broadcasting or Bonding to peer. This function can be called during
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334 * advertising to enable/disable broadcast pipes. Use this as an alternative to @ref lib_aci_open_adv_pipe
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335 * to avoid multiple function calls for placing multiple pipes in the adv data.
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336 * @param adv_service_data_pipes Pipe bitmap, where '1' indicates that the corresponding
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337 * Valid Values: 0000000000000000 to FEFFFFFFFFFFFF7F (See the ACI Pipe Status Evt bitmap in the nRF8001 datasheet
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338 * TX_BROADCAST pipe data is to be placed in Advertising Service Data fields
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339 * @return true if the Open Adv Pipe message was sent successfully to the radio.
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341 bool lib_aci_open_adv_pipes(const uint8_t * const adv_service_data_pipes);
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346 /** @name ACI commands available in Connected mode */
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350 /** @brief Sets a given application latency.
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351 * @details This function sends a @c setApplicationLatency command.
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352 * @return True if the transaction is successfully initiated.
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354 bool lib_aci_set_app_latency(uint16_t latency, aci_app_latency_mode_t latency_mode);
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356 /** @brief Opens a remote pipe.
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357 * @details This function sends an @c OpenRemotePipe command.
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358 * @param pipe Number of the pipe to open.
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359 * @return True if the transaction is successfully initiated.
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361 bool lib_aci_open_remote_pipe(aci_state_t *aci_stat, uint8_t pipe);
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363 /** @brief Closes a remote pipe.
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364 * @details This function sends an @c CloseRemotePipe command.
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365 * @param pipe Pipe number to close.
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366 * @return True if the transaction is successfully initiated.
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368 bool lib_aci_close_remote_pipe(aci_state_t *aci_stat, uint8_t pipe);
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370 /** @brief Sends data on a given pipe.
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371 * @details This function sends a @c SendData command with application data to
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372 * the radio. This function memorizes credit use, and checks that
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373 * enough credits are available.
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374 * @param pipe Pipe number on which the data should be sent.
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375 * @param value Pointer to the data to send.
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376 * @param size Size of the data to send.
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377 * @return True if the transaction is successfully initiated.
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379 bool lib_aci_send_data(uint8_t pipe, uint8_t *value, uint8_t size);
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381 /** @brief Requests data from a given pipe.
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382 * @details This function sends a @c RequestData command to the radio. This
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383 * function memorizes credit uses, and check that enough credits are available.
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384 * After this command, the radio sends back either a @c DataReceivedEvent
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385 * or a @c PipeErrorEvent.
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386 * @param pipe Pipe number on which the data is requested.
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387 * @return True if the transaction is successfully initiated.
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389 bool lib_aci_request_data(aci_state_t *aci_stat, uint8_t pipe);
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391 /** @brief Sends a L2CAP change connection parameters request.
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392 * @details This function sends a @c ChangeTiming command to the radio. This command triggers a "L2CAP change connection parameters" request
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393 * to the master. If the master rejects or accepts but doesn't change the connection parameters within
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394 * 30 seconds, a timing event with the unchanged connection parameters is sent by the radio.
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395 * If the request is accepted and the master changes connection parameters, a timing event with
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396 * the new connection parameters is sent by the radio.
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397 * If the master doesn't reply to the request within 60 seconds, the radio disconnects.
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398 * @param minimun_cx_interval Minimum connection interval requested, in multiple of 1.25 ms.
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399 * @param maximum_cx_interval Maximum connection interval requested, in multiple of 1.25 ms.
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400 * @param slave_latency requested slave latency.
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401 * @param timeout requested slave timeout, in multiple of 10 ms.
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402 * @return True if the transaction is successfully initiated.
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404 bool lib_aci_change_timing(uint16_t minimun_cx_interval, uint16_t maximum_cx_interval, uint16_t slave_latency, uint16_t timeout);
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406 /** @brief Sends a L2CAP change connection parameters request with the connection predefined preffered connection parameters.
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407 * @details This function sends a @c ChangeTiming command to the radio. This command triggers a "L2CAP change connection parameters" request
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408 * to the master. If the master rejects or accepts but doesn't change the connection parameters within
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409 * 30 seconds, a timing event with the unchanged connection parameters is sent by the radio.
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410 * If the request is accepted and the master changes connection parameters, a timing event with
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411 * the new connection parameters is sent by the radio.
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412 * If the master doesn't reply to the request within 60 seconds, the radio disconnects.
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413 * The timing parameters used are the Timing parameters in the GAP settings in the nRFgo Studio.
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414 * The Timing parameters as stored as the GAP Preferred Peripheral Connection Parameters.
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415 * @return True if the transaction is successfully initiated.
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417 bool lib_aci_change_timing_GAP_PPCP(void);
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419 /** @brief Sends acknowledgement message to peer.
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420 * @details This function sends @c SendDataAck command to radio. The radio is expected
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421 * to send either Handle Value Confirmation or Write response depending
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422 * on whether the data is stored remotely or locally.
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423 * @param pipe Pipe number for which the acknowledgement is to be sent.
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424 * @return True if the ack was sent successfully. False otherwise.
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426 bool lib_aci_send_ack(aci_state_t *aci_stat, const uint8_t pipe);
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428 /** @brief Sends negative acknowledgement message to peer.
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429 * @details This function sends @c SendDataNack command to radio. The radio is expected
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430 * to send Error Response to the peer.
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431 * @param pipe Pipe number for which the nack is to be sent.
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432 * @param error_code Error code to be sent in the NACk.
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433 * @return True if the nack was sent successfully. False otherwise.
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435 bool lib_aci_send_nack(aci_state_t *aci_stat, const uint8_t pipe, const uint8_t error_code);
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437 /** @brief Sends ReadDynamicData command to the host.
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438 * @details This function sends @c ReadDynamicData command to host. The host is expected
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439 * to send @c CommandResponse back with the dynamic data. The application is expected to
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440 * call this function in a loop until all the dynamic data is read out from the host.
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441 * As long as there is dynamic data to be read from the host, the command response
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442 * for this message has its status field set to ACI_STATUS_TRANSACTION_CONTINUE (0x01).
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443 * The application may chose to store this read out data in a non-volatile memory location
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444 * and later chose to write it back using the function lib_aci_write_dynamic_data.
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445 * @return True if the command was sent successfully through the ACI. False otherwise.
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447 bool lib_aci_read_dynamic_data(void);
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449 /** @brief Sends WriteDynamicData command to the host.
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450 * @details This function sends @c WriteDynamicData command to host. The host is expected
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451 * to send @c CommandResponse with the status of this operation. As long as the status field
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452 * in the @c CommandResponse is ACI_STATUS_TRANSACTION_CONTINUE (0x01), the hosts expects
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453 * more dynamic data to be written. This function should ideally be called in a cycle,
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454 * until all the stored dynamic data is sent to the host. This function should be
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455 * called with the dynamic data obtained from the response to a @c ReadDynamicData
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456 * (see @c lib_aci_read_dynamic_data) command.
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457 * @param sequence_number Sequence number of the dynamic data to be sent.
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458 * @param dynamic_data Pointer to the dynamic data.
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459 * @param length Length of the dynamic data.
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460 * @return True if the command was sent successfully through the ACI. False otherwise.
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462 bool lib_aci_write_dynamic_data(uint8_t sequence_number, uint8_t* dynamic_data, uint8_t length);
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465 /** @name ACI commands available while connected in Bond mode */
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468 /** @brief Sends a SMP Security Request.
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469 * @details This function send a @c BondRequest command to the radio.
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470 * This command triggers a SMP Security Request to the master. If the
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471 * master rejects with a pairing failed or if the bond timer expires the connection is closed.
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472 * @return True if the transaction is successfully initiated.
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474 bool lib_aci_bond_request(void);
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476 /** @brief Set the key requested by the 8001.
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477 * @details This function sends an @c SetKey command to the radio.
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478 * @param key_rsp_type Type of key.
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479 * @param key Pointer to the key to set.
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480 * @param len Length of the key.
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481 * @return True if the transaction is successfully initiated.
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483 bool lib_aci_set_key(aci_key_type_t key_rsp_type, uint8_t *key, uint8_t len);
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489 /** @name ACI commands available in Test mode */
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492 /** @brief Sends an echo message
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493 * @details This function sends an @c Echo command to the radio. lib_aci
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494 * places the Echp ACI command in the ACI command queue
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495 * @param message_size Length of the data to send.
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496 * @param message_data Pointer to the data to send.
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497 * @return True if the transaction is successfully initiated.
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499 bool lib_aci_echo_msg(uint8_t message_size, uint8_t *message_data);
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501 /** @brief Sends an DTM command
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502 * @details This function sends an @c DTM command to the radio.
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503 * @param dtm_command_msbyte Most significant byte of the DTM command.
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504 * @param dtm_command_lsbyte Least significant byte of the DTM command.
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505 * @return True if the transaction is successfully initiated.
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507 bool lib_aci_dtm_command(uint8_t dtm_command_msbyte, uint8_t dtm_command_lsbyte);
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509 /** @brief Gets an ACI event from the ACI Event Queue
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510 * @details This function gets an ACI event from the ACI event queue.
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511 * The queue is updated by the SPI driver for the ACI running in the interrupt context
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512 * @param aci_stat pointer to the state of the ACI.
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513 * @param p_aci_data pointer to the ACI Event. The ACI Event received will be copied into this pointer.
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514 * @return True if an ACI Event was copied to the pointer.
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516 bool lib_aci_event_get(aci_state_t *aci_stat, hal_aci_evt_t * aci_evt);
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518 /** @brief Peeks an ACI event from the ACI Event Queue
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519 * @details This function peeks at the top event in the ACI event queue.
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520 * In polling mode, this function will query the nRF8001 for pending events, but unlike
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521 * lib_aci_event_get() it will not dequeue the event from the local queue, but will instead
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523 * @return True if an ACI Event was copied to the pointer.
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525 bool lib_aci_event_peek(hal_aci_evt_t *p_aci_evt_data);
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527 /** @brief Flushes the events in the ACI command queues and ACI Event queue
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530 void lib_aci_flush(void);
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532 /** @brief Return full status of the Event queue
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536 bool lib_aci_event_queue_full(void);
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538 /** @brief Return empty status of the Event queue
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542 bool lib_aci_event_queue_empty(void);
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544 /** @brief Return full status of Command queue
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548 bool lib_aci_command_queue_full(void);
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550 /** @brief Return empty status of Command queue
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554 bool lib_aci_command_queue_empty(void);
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564 #endif /* LIB_ACI_H__ */
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