Yihui Xiong / Mbed 2 deprecated BLE_Default_APP

BLE FOTA APP

Dependencies:   BLE_API mbed

It doesn't work with the default FOTA bootloader. It use NVIC_SystemReset() to enter a bootloader.

nRF51822/nordic/nrf-sdk/app_common/app_uart.h@1:a607cd9655d7, 2014-10-10 (annotated)

Committer:
yihui
Date:
Fri Oct 10 03:36:28 2014 +0000
Revision:
1:a607cd9655d7
use NVIC_SystemReset() to run bootloader

Who changed what in which revision?

UserRevisionLine numberNew contents of line
yihui 1:a607cd9655d7 1 /* Copyright (c) 2013 Nordic Semiconductor. All Rights Reserved.
yihui 1:a607cd9655d7 2 *
yihui 1:a607cd9655d7 3 * The information contained herein is property of Nordic Semiconductor ASA.
yihui 1:a607cd9655d7 4 * Terms and conditions of usage are described in detail in NORDIC
yihui 1:a607cd9655d7 5 * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
yihui 1:a607cd9655d7 6 *
yihui 1:a607cd9655d7 7 * Licensees are granted free, non-transferable use of the information. NO
yihui 1:a607cd9655d7 8 * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
yihui 1:a607cd9655d7 9 * the file.
yihui 1:a607cd9655d7 10 *
yihui 1:a607cd9655d7 11 */
yihui 1:a607cd9655d7 12
yihui 1:a607cd9655d7 13 /**@file
yihui 1:a607cd9655d7 14 *
yihui 1:a607cd9655d7 15 * @defgroup app_uart UART module
yihui 1:a607cd9655d7 16 * @{
yihui 1:a607cd9655d7 17 * @ingroup app_common
yihui 1:a607cd9655d7 18 *
yihui 1:a607cd9655d7 19 * @brief UART module interface.
yihui 1:a607cd9655d7 20 */
yihui 1:a607cd9655d7 21
yihui 1:a607cd9655d7 22 #ifndef APP_UART_H__
yihui 1:a607cd9655d7 23 #define APP_UART_H__
yihui 1:a607cd9655d7 24
yihui 1:a607cd9655d7 25 #include <stdint.h>
yihui 1:a607cd9655d7 26 #include <stdbool.h>
yihui 1:a607cd9655d7 27 #include "app_util_platform.h"
yihui 1:a607cd9655d7 28
yihui 1:a607cd9655d7 29 #define UART_PIN_DISCONNECTED 0xFFFFFFFF /**< Value indicating that no pin is connected to this UART register. */
yihui 1:a607cd9655d7 30
yihui 1:a607cd9655d7 31 /**@brief UART Flow Control modes for the peripheral.
yihui 1:a607cd9655d7 32 */
yihui 1:a607cd9655d7 33 typedef enum
yihui 1:a607cd9655d7 34 {
yihui 1:a607cd9655d7 35 APP_UART_FLOW_CONTROL_DISABLED, /**< UART Hw Flow Control is disabled. */
yihui 1:a607cd9655d7 36 APP_UART_FLOW_CONTROL_ENABLED, /**< Standard UART Hw Flow Control is enabled. */
yihui 1:a607cd9655d7 37 APP_UART_FLOW_CONTROL_LOW_POWER /**< Specialized UART Hw Flow Control is used. The Low Power setting allows the nRF51 to Power Off the UART module when CTS is in-active, and re-enabling the UART when the CTS signal becomes active. This allows the nRF51 to safe power by only using the UART module when it is needed by the remote site. */
yihui 1:a607cd9655d7 38 } app_uart_flow_control_t;
yihui 1:a607cd9655d7 39
yihui 1:a607cd9655d7 40 /**@brief UART communication structure holding configuration settings for the peripheral.
yihui 1:a607cd9655d7 41 */
yihui 1:a607cd9655d7 42 typedef struct
yihui 1:a607cd9655d7 43 {
yihui 1:a607cd9655d7 44 uint8_t rx_pin_no; /**< RX pin number. */
yihui 1:a607cd9655d7 45 uint8_t tx_pin_no; /**< TX pin number. */
yihui 1:a607cd9655d7 46 uint8_t rts_pin_no; /**< RTS pin number, only used if flow control is enabled. */
yihui 1:a607cd9655d7 47 uint8_t cts_pin_no; /**< CTS pin number, only used if flow control is enabled. */
yihui 1:a607cd9655d7 48 app_uart_flow_control_t flow_control; /**< Flow control setting, if flow control is used, the system will use low power UART mode, based on CTS signal. */
yihui 1:a607cd9655d7 49 bool use_parity; /**< Even parity if TRUE, no parity if FALSE. */
yihui 1:a607cd9655d7 50 uint32_t baud_rate; /**< Baud rate configuration. */
yihui 1:a607cd9655d7 51 } app_uart_comm_params_t;
yihui 1:a607cd9655d7 52
yihui 1:a607cd9655d7 53 /**@brief UART buffer for transmitting/receiving data.
yihui 1:a607cd9655d7 54 */
yihui 1:a607cd9655d7 55 typedef struct
yihui 1:a607cd9655d7 56 {
yihui 1:a607cd9655d7 57 uint8_t * rx_buf; /**< Pointer to the RX buffer. */
yihui 1:a607cd9655d7 58 uint32_t rx_buf_size; /**< Size of the RX buffer. */
yihui 1:a607cd9655d7 59 uint8_t * tx_buf; /**< Pointer to the TX buffer. */
yihui 1:a607cd9655d7 60 uint32_t tx_buf_size; /**< Size of the TX buffer. */
yihui 1:a607cd9655d7 61 } app_uart_buffers_t;
yihui 1:a607cd9655d7 62
yihui 1:a607cd9655d7 63 /**@brief Enumeration describing current state of the UART.
yihui 1:a607cd9655d7 64 *
yihui 1:a607cd9655d7 65 * @details The connection state can be fetched by the application using the function call
yihui 1:a607cd9655d7 66 * @ref app_uart_get_connection_state.
yihui 1:a607cd9655d7 67 * When hardware flow control is used
yihui 1:a607cd9655d7 68 * - APP_UART_CONNECTED: Communication is ongoing.
yihui 1:a607cd9655d7 69 * - APP_UART_DISCONNECTED: No communication is ongoing.
yihui 1:a607cd9655d7 70 *
yihui 1:a607cd9655d7 71 * When no hardware flow control is used
yihui 1:a607cd9655d7 72 * - APP_UART_CONNECTED: Always returned as bytes can always be received/transmitted.
yihui 1:a607cd9655d7 73 */
yihui 1:a607cd9655d7 74 typedef enum
yihui 1:a607cd9655d7 75 {
yihui 1:a607cd9655d7 76 APP_UART_DISCONNECTED, /**< State indicating that the UART is disconnected and cannot receive or transmit bytes. */
yihui 1:a607cd9655d7 77 APP_UART_CONNECTED /**< State indicating that the UART is connected and ready to receive or transmit bytes. If flow control is disabled, the state will always be connected. */
yihui 1:a607cd9655d7 78 } app_uart_connection_state_t;
yihui 1:a607cd9655d7 79
yihui 1:a607cd9655d7 80 /**@brief Enumeration which defines events used by the UART module upon data reception or error.
yihui 1:a607cd9655d7 81 *
yihui 1:a607cd9655d7 82 * @details The event type is used to indicate the type of additional information in the event
yihui 1:a607cd9655d7 83 * @ref app_uart_evt_t.
yihui 1:a607cd9655d7 84 */
yihui 1:a607cd9655d7 85 typedef enum
yihui 1:a607cd9655d7 86 {
yihui 1:a607cd9655d7 87 APP_UART_DATA_READY, /**< An event indicating that UART data has been received. The data is available in the FIFO and can be fetched using @ref app_uart_get. */
yihui 1:a607cd9655d7 88 APP_UART_FIFO_ERROR, /**< An error in the FIFO module used by the app_uart module has occured. The FIFO error code is stored in app_uart_evt_t.data.error_code field. */
yihui 1:a607cd9655d7 89 APP_UART_COMMUNICATION_ERROR, /**< An communication error has occured during reception. The error is stored in app_uart_evt_t.data.error_communication field. */
yihui 1:a607cd9655d7 90 APP_UART_TX_EMPTY, /**< An event indicating that UART has completed transmission of all available data in the TX FIFO. */
yihui 1:a607cd9655d7 91 APP_UART_DATA, /**< An event indicating that UART data has been received, and data is present in data field. This event is only used when no FIFO is configured. */
yihui 1:a607cd9655d7 92 } app_uart_evt_type_t;
yihui 1:a607cd9655d7 93
yihui 1:a607cd9655d7 94 /**@brief Struct containing events from the UART module.
yihui 1:a607cd9655d7 95 *
yihui 1:a607cd9655d7 96 * @details The app_uart_evt_t is used to notify the application of asynchronous events when data
yihui 1:a607cd9655d7 97 * are received on the UART peripheral or in case an error occured during data reception.
yihui 1:a607cd9655d7 98 */
yihui 1:a607cd9655d7 99 typedef struct
yihui 1:a607cd9655d7 100 {
yihui 1:a607cd9655d7 101 app_uart_evt_type_t evt_type; /**< Type of event. */
yihui 1:a607cd9655d7 102 union
yihui 1:a607cd9655d7 103 {
yihui 1:a607cd9655d7 104 uint32_t error_communication; /**< Field used if evt_type is: APP_UART_COMMUNICATION_ERROR. This field contains the value in the ERRORSRC register for the UART peripheral. The UART_ERRORSRC_x defines from @ref nrf51_bitfields.h can be used to parse the error code. See also the nRF51 Series Reference Manual for specification. */
yihui 1:a607cd9655d7 105 uint32_t error_code; /**< Field used if evt_type is: NRF_ERROR_x. Additional status/error code if the error event type is APP_UART_FIFO_ERROR. This error code refer to errors defined in nrf_error.h. */
yihui 1:a607cd9655d7 106 uint8_t value; /**< Field used if evt_type is: NRF_ERROR_x. Additional status/error code if the error event type is APP_UART_FIFO_ERROR. This error code refer to errors defined in nrf_error.h. */
yihui 1:a607cd9655d7 107 } data;
yihui 1:a607cd9655d7 108 } app_uart_evt_t;
yihui 1:a607cd9655d7 109
yihui 1:a607cd9655d7 110 /**@brief Function for handling app_uart event callback.
yihui 1:a607cd9655d7 111 *
yihui 1:a607cd9655d7 112 * @details Upon an event in the app_uart module this callback function will be called to notify
yihui 1:a607cd9655d7 113 * the applicatioon about the event.
yihui 1:a607cd9655d7 114 *
yihui 1:a607cd9655d7 115 * @param[in] p_app_uart_event Pointer to UART event.
yihui 1:a607cd9655d7 116 */
yihui 1:a607cd9655d7 117
yihui 1:a607cd9655d7 118
yihui 1:a607cd9655d7 119 typedef void (* app_uart_event_handler_t) (app_uart_evt_t * p_app_uart_event);
yihui 1:a607cd9655d7 120
yihui 1:a607cd9655d7 121 /**@brief Macro for safe initialization of the UART module in a single user instance when using
yihui 1:a607cd9655d7 122 * a FIFO together with UART.
yihui 1:a607cd9655d7 123 *
yihui 1:a607cd9655d7 124 * @param[in] P_COMM_PARAMS Pointer to a UART communication structure: app_uart_comm_params_t
yihui 1:a607cd9655d7 125 * @param[in] RX_BUF_SIZE Size of desired RX buffer, must be a power of 2 or ZERO (No FIFO).
yihui 1:a607cd9655d7 126 * @param[in] TX_BUF_SIZE Size of desired TX buffer, must be a power of 2 or ZERO (No FIFO).
yihui 1:a607cd9655d7 127 * @param[in] EVENT_HANDLER Event handler function to be called when an event occurs in the
yihui 1:a607cd9655d7 128 * UART module.
yihui 1:a607cd9655d7 129 * @param[in] IRQ_PRIO IRQ priority, app_irq_priority_t, for the UART module irq handler.
yihui 1:a607cd9655d7 130 * @param[out] ERR_CODE The return value of the UART initialization function will be
yihui 1:a607cd9655d7 131 * written to this parameter.
yihui 1:a607cd9655d7 132 *
yihui 1:a607cd9655d7 133 * @note Since this macro allocates a buffer and registers the module as a GPIOTE user when flow
yihui 1:a607cd9655d7 134 * control is enabled, it must only be called once.
yihui 1:a607cd9655d7 135 */
yihui 1:a607cd9655d7 136 #define APP_UART_FIFO_INIT(P_COMM_PARAMS, RX_BUF_SIZE, TX_BUF_SIZE, EVT_HANDLER, IRQ_PRIO, ERR_CODE) \
yihui 1:a607cd9655d7 137 do \
yihui 1:a607cd9655d7 138 { \
yihui 1:a607cd9655d7 139 uint16_t APP_UART_UID = 0; \
yihui 1:a607cd9655d7 140 app_uart_buffers_t buffers; \
yihui 1:a607cd9655d7 141 static uint8_t rx_buf[RX_BUF_SIZE]; \
yihui 1:a607cd9655d7 142 static uint8_t tx_buf[TX_BUF_SIZE]; \
yihui 1:a607cd9655d7 143 \
yihui 1:a607cd9655d7 144 buffers.rx_buf = rx_buf; \
yihui 1:a607cd9655d7 145 buffers.rx_buf_size = sizeof (rx_buf); \
yihui 1:a607cd9655d7 146 buffers.tx_buf = tx_buf; \
yihui 1:a607cd9655d7 147 buffers.tx_buf_size = sizeof (tx_buf); \
yihui 1:a607cd9655d7 148 ERR_CODE = app_uart_init(P_COMM_PARAMS, &buffers, EVT_HANDLER, IRQ_PRIO, &APP_UART_UID); \
yihui 1:a607cd9655d7 149 } while (0)
yihui 1:a607cd9655d7 150
yihui 1:a607cd9655d7 151 /**@brief Macro for safe initialization of the UART module in a single user instance.
yihui 1:a607cd9655d7 152 *
yihui 1:a607cd9655d7 153 * @param[in] P_COMM_PARAMS Pointer to a UART communication structure: app_uart_comm_params_t
yihui 1:a607cd9655d7 154 * @param[in] EVENT_HANDLER Event handler function to be called when an event occurs in the
yihui 1:a607cd9655d7 155 * UART module.
yihui 1:a607cd9655d7 156 * @param[in] IRQ_PRIO IRQ priority, app_irq_priority_t, for the UART module irq handler.
yihui 1:a607cd9655d7 157 * @param[out] ERR_CODE The return value of the UART initialization function will be
yihui 1:a607cd9655d7 158 * written to this parameter.
yihui 1:a607cd9655d7 159 *
yihui 1:a607cd9655d7 160 * @note Since this macro allocates registers the module as a GPIOTE user when flow control is
yihui 1:a607cd9655d7 161 * enabled, it must only be called once.
yihui 1:a607cd9655d7 162 */
yihui 1:a607cd9655d7 163 #define APP_UART_INIT(P_COMM_PARAMS, EVT_HANDLER, IRQ_PRIO, ERR_CODE) \
yihui 1:a607cd9655d7 164 do \
yihui 1:a607cd9655d7 165 { \
yihui 1:a607cd9655d7 166 uint16_t APP_UART_UID = 0; \
yihui 1:a607cd9655d7 167 ERR_CODE = app_uart_init(P_COMM_PARAMS, NULL, EVT_HANDLER, IRQ_PRIO, &APP_UART_UID); \
yihui 1:a607cd9655d7 168 } while (0)
yihui 1:a607cd9655d7 169
yihui 1:a607cd9655d7 170 /**@brief Function for initializing the UART module. Use this initialization when several instances of the UART
yihui 1:a607cd9655d7 171 * module are needed.
yihui 1:a607cd9655d7 172 *
yihui 1:a607cd9655d7 173 * @details This initialization will return a UART user id for the caller. The UART user id must be
yihui 1:a607cd9655d7 174 * used upon re-initialization of the UART or closing of the module for the user.
yihui 1:a607cd9655d7 175 * If single instance usage is needed, the APP_UART_INIT() macro should be used instead.
yihui 1:a607cd9655d7 176 *
yihui 1:a607cd9655d7 177 * @note Normally single instance initialization should be done using the APP_UART_INIT() or
yihui 1:a607cd9655d7 178 * APP_UART_INIT_FIFO() macro depending on whether the FIFO should be used by the UART, as
yihui 1:a607cd9655d7 179 * that will allocate the buffers needed by the UART module (including aligning the buffer
yihui 1:a607cd9655d7 180 * correctly).
yihui 1:a607cd9655d7 181
yihui 1:a607cd9655d7 182 * @param[in] p_comm_params Pin and communication parameters.
yihui 1:a607cd9655d7 183 * @param[in] p_buffers RX and TX buffers, NULL is FIFO is not used.
yihui 1:a607cd9655d7 184 * @param[in] error_handler Function to be called in case of an error.
yihui 1:a607cd9655d7 185 * @param[in] app_irq_priority Interrupt priority level.
yihui 1:a607cd9655d7 186 * @param[in,out] p_uart_uid User id for the UART module. The p_uart_uid must be used if
yihui 1:a607cd9655d7 187 * re-initialization and/or closing of the UART module is needed.
yihui 1:a607cd9655d7 188 * If the value pointed to by p_uart_uid is zero, this is
yihui 1:a607cd9655d7 189 * considdered a first time initialization. Otherwise this is
yihui 1:a607cd9655d7 190 * considered a re-initialization for the user with id *p_uart_uid.
yihui 1:a607cd9655d7 191 *
yihui 1:a607cd9655d7 192 * @retval NRF_SUCCESS If successful initialization.
yihui 1:a607cd9655d7 193 * @retval NRF_ERROR_INVALID_LENGTH If a provided buffer is not a power of two.
yihui 1:a607cd9655d7 194 * @retval NRF_ERROR_NULL If one of the provided buffers is a NULL pointer.
yihui 1:a607cd9655d7 195 *
yihui 1:a607cd9655d7 196 * Those errors are propagated by the UART module to the caller upon registration when Hardware Flow
yihui 1:a607cd9655d7 197 * Control is enabled. When Hardware Flow Control is not used, those errors cannot occur.
yihui 1:a607cd9655d7 198 * @retval NRF_ERROR_INVALID_STATE The GPIOTE module is not in a valid state when registering
yihui 1:a607cd9655d7 199 * the UART module as a user.
yihui 1:a607cd9655d7 200 * @retval NRF_ERROR_INVALID_PARAM The UART module provides an invalid callback function when
yihui 1:a607cd9655d7 201 * registering the UART module as a user.
yihui 1:a607cd9655d7 202 * Or the value pointed to by *p_uart_uid is not a valid
yihui 1:a607cd9655d7 203 * GPIOTE number.
yihui 1:a607cd9655d7 204 * @retval NRF_ERROR_NO_MEM GPIOTE module has reached the maximum number of users.
yihui 1:a607cd9655d7 205 */
yihui 1:a607cd9655d7 206 uint32_t app_uart_init(const app_uart_comm_params_t * p_comm_params,
yihui 1:a607cd9655d7 207 app_uart_buffers_t * p_buffers,
yihui 1:a607cd9655d7 208 app_uart_event_handler_t error_handler,
yihui 1:a607cd9655d7 209 app_irq_priority_t irq_priority,
yihui 1:a607cd9655d7 210 uint16_t * p_uart_uid);
yihui 1:a607cd9655d7 211
yihui 1:a607cd9655d7 212 /**@brief Function for getting a byte from the UART.
yihui 1:a607cd9655d7 213 *
yihui 1:a607cd9655d7 214 * @details This function will get the next byte from the RX buffer. If the RX buffer is empty
yihui 1:a607cd9655d7 215 * an error code will be returned and the app_uart module will generate an event upon
yihui 1:a607cd9655d7 216 * reception of the first byte which is added to the RX buffer.
yihui 1:a607cd9655d7 217 *
yihui 1:a607cd9655d7 218 * @param[out] p_byte Pointer to an address where next byte received on the UART will be copied.
yihui 1:a607cd9655d7 219 *
yihui 1:a607cd9655d7 220 * @retval NRF_SUCCESS If a byte has been received and pushed to the pointer provided.
yihui 1:a607cd9655d7 221 * @retval NRF_ERROR_NOT_FOUND If no byte is available in the RX buffer of the app_uart module.
yihui 1:a607cd9655d7 222 */
yihui 1:a607cd9655d7 223 uint32_t app_uart_get(uint8_t * p_byte);
yihui 1:a607cd9655d7 224
yihui 1:a607cd9655d7 225 /**@brief Function for putting a byte on the UART.
yihui 1:a607cd9655d7 226 *
yihui 1:a607cd9655d7 227 * @details This call is non-blocking.
yihui 1:a607cd9655d7 228 *
yihui 1:a607cd9655d7 229 * @param[in] byte Byte to be transmitted on the UART.
yihui 1:a607cd9655d7 230 *
yihui 1:a607cd9655d7 231 * @retval NRF_SUCCESS If the byte was succesfully put on the TX buffer for transmission.
yihui 1:a607cd9655d7 232 * @retval NRF_ERROR_NO_MEM If no more space is available in the TX buffer.
yihui 1:a607cd9655d7 233 * NRF_ERROR_NO_MEM may occur if flow control is enabled and CTS signal
yihui 1:a607cd9655d7 234 * is high for a long period and the buffer fills up.
yihui 1:a607cd9655d7 235 */
yihui 1:a607cd9655d7 236 uint32_t app_uart_put(uint8_t byte);
yihui 1:a607cd9655d7 237
yihui 1:a607cd9655d7 238 /**@brief Function for getting the current state of the UART.
yihui 1:a607cd9655d7 239 *
yihui 1:a607cd9655d7 240 * @details If flow control is disabled, the state is assumed to always be APP_UART_CONNECTED.
yihui 1:a607cd9655d7 241 *
yihui 1:a607cd9655d7 242 * When using flow control the state will be controlled by the CTS. If CTS is set active
yihui 1:a607cd9655d7 243 * by the remote side, or the app_uart module is in the process of transmitting a byte,
yihui 1:a607cd9655d7 244 * app_uart is in APP_UART_CONNECTED state. If CTS is set inactive by remote side app_uart
yihui 1:a607cd9655d7 245 * will not get into APP_UART_DISCONNECTED state until the last byte in the TXD register
yihui 1:a607cd9655d7 246 * is fully transmitted.
yihui 1:a607cd9655d7 247 *
yihui 1:a607cd9655d7 248 * Internal states in the state machine are mapped to the general connected/disconnected
yihui 1:a607cd9655d7 249 * states in the following ways:
yihui 1:a607cd9655d7 250 *
yihui 1:a607cd9655d7 251 * - UART_ON = CONNECTED
yihui 1:a607cd9655d7 252 * - UART_READY = CONNECTED
yihui 1:a607cd9655d7 253 * - UART_WAIT = CONNECTED
yihui 1:a607cd9655d7 254 * - UART_OFF = DISCONNECTED.
yihui 1:a607cd9655d7 255 *
yihui 1:a607cd9655d7 256 * @param[out] p_connection_state Current connection state of the UART.
yihui 1:a607cd9655d7 257 *
yihui 1:a607cd9655d7 258 * @retval NRF_SUCCESS The connection state was succesfully retrieved.
yihui 1:a607cd9655d7 259 */
yihui 1:a607cd9655d7 260 uint32_t app_uart_get_connection_state(app_uart_connection_state_t * p_connection_state);
yihui 1:a607cd9655d7 261
yihui 1:a607cd9655d7 262 /**@brief Function for flushing the RX and TX buffers (Only valid if FIFO is used).
yihui 1:a607cd9655d7 263 * This function does nothing if FIFO is not used.
yihui 1:a607cd9655d7 264 *
yihui 1:a607cd9655d7 265 * @retval NRF_SUCCESS Flushing completed (Current implementation will always succeed).
yihui 1:a607cd9655d7 266 */
yihui 1:a607cd9655d7 267 uint32_t app_uart_flush(void);
yihui 1:a607cd9655d7 268
yihui 1:a607cd9655d7 269 /**@brief Function for closing the UART module.
yihui 1:a607cd9655d7 270 *
yihui 1:a607cd9655d7 271 * @details This function will close any on-going UART transmissions and disable itself in the
yihui 1:a607cd9655d7 272 * GPTIO module.
yihui 1:a607cd9655d7 273 *
yihui 1:a607cd9655d7 274 * @param[in] app_uart_uid User id for the UART module. The app_uart_uid must be identical to the
yihui 1:a607cd9655d7 275 * UART id returned on initialization and which is currently in use.
yihui 1:a607cd9655d7 276
yihui 1:a607cd9655d7 277 * @retval NRF_SUCCESS If successfully closed.
yihui 1:a607cd9655d7 278 * @retval NRF_ERROR_INVALID_PARAM If an invalid user id is provided or the user id differs from
yihui 1:a607cd9655d7 279 * the current active user.
yihui 1:a607cd9655d7 280 */
yihui 1:a607cd9655d7 281 uint32_t app_uart_close(uint16_t app_uart_id);
yihui 1:a607cd9655d7 282
yihui 1:a607cd9655d7 283
yihui 1:a607cd9655d7 284 #endif //APP_UART_H__
yihui 1:a607cd9655d7 285
yihui 1:a607cd9655d7 286 /** @} */