Go to the documentation of this file.
    1 
    2 /*
    3  * ====================== WARNING ======================
    4  *
    5  * THE CONTENTS OF THIS FILE HAVE BEEN AUTO-GENERATED.
    6  * DO NOT MODIFY IN ANY WAY.
    7  *
    8  * ====================== WARNING ======================
    9  */
   10 /**
   11  * @file le_gpio_common.h
   12  *
   13  * Type definitions for le_gpio.
   14  *
   15  */
   16 #ifndef LE_GPIO_COMMON_H_INCLUDE_GUARD
   17 #define LE_GPIO_COMMON_H_INCLUDE_GUARD
   18 
   19 
   20 #include "legato.h"
   21 
   22 #define IFGEN_LE_GPIO_PROTOCOL_ID "eb4b6dc575d64f27484e7657275f11fd"
   23 #define IFGEN_LE_GPIO_MSG_SIZE 20
   24 /** @addtogroup le_gpio
   25  *  @{ **/
   26 
   27 
   28 //--------------------------------------------------------------------------------------------------
   29 /**
   30  * Pin polarities.
   31  */
   32 //--------------------------------------------------------------------------------------------------
   33 typedef enum
   34 {
   35     LE_GPIO_ACTIVE_HIGH = 0,
   36         ///< GPIO active-high, output is 1
   37     LE_GPIO_ACTIVE_LOW = 1
   38         ///< GPIO active-low, output is 0
   39 }
   40 le_gpio_Polarity_t;
   41 
   42 
   43 //--------------------------------------------------------------------------------------------------
   44 /**
   45  * Edge transitions.
   46  */
   47 //--------------------------------------------------------------------------------------------------
   48 typedef enum
   49 {
   50     LE_GPIO_EDGE_NONE = 0,
   51         ///< No edge detection
   52     LE_GPIO_EDGE_RISING = 1,
   53         ///< Notify when voltage goes from low to high.
   54     LE_GPIO_EDGE_FALLING = 2,
   55         ///< Notify when voltage goes from high to low.
   56     LE_GPIO_EDGE_BOTH = 3
   57         ///< Notify when pin voltage changes state in either direction.
   58 }
   59 le_gpio_Edge_t;
   60 
   61 
   62 //--------------------------------------------------------------------------------------------------
   63 /**
   64  * Reference type used by Add/Remove functions for EVENT 'le_gpio_ChangeEvent'
   65  */
   66 //--------------------------------------------------------------------------------------------------
   67 typedef struct le_gpio_ChangeEventHandler* le_gpio_ChangeEventHandlerRef_t;
   68 
   69 
   70 //--------------------------------------------------------------------------------------------------
   71 /**
   72  * Pull up or down.
   73  */
   74 //--------------------------------------------------------------------------------------------------
   75 typedef enum
   76 {
   77     LE_GPIO_PULL_OFF = 0,
   78         ///< Neither resistor is enabled
   79     LE_GPIO_PULL_DOWN = 1,
   80         ///< Pulldown resistor is enabled
   81     LE_GPIO_PULL_UP = 2
   82         ///< Pullup resistor is enabled
   83 }
   84 le_gpio_PullUpDown_t;
   85 
   86 
   87 //--------------------------------------------------------------------------------------------------
   88 /**
   89  * State change event handler (callback).
   90  */
   91 //--------------------------------------------------------------------------------------------------
   92 typedef void (*le_gpio_ChangeCallbackFunc_t)
   93 (
   94         bool state,
   95         ///< New state of pin (true = active, false = inactive).
   96         void* contextPtr
   97         ///<
   98 );
   99 
  100 
  101 //--------------------------------------------------------------------------------------------------
  102 /**
  103  * Get if this client bound locally.
  104  */
  105 //--------------------------------------------------------------------------------------------------
  106 LE_SHARED bool ifgen_le_gpio_HasLocalBinding
  107 (
  108     void
  109 );
  110 
  111 
  112 //--------------------------------------------------------------------------------------------------
  113 /**
  114  * Init data that is common across all threads
  115  */
  116 //--------------------------------------------------------------------------------------------------
  117 LE_SHARED void ifgen_le_gpio_InitCommonData
  118 (
  119     void
  120 );
  121 
  122 
  123 //--------------------------------------------------------------------------------------------------
  124 /**
  125  * Perform common initialization and open a session
  126  */
  127 //--------------------------------------------------------------------------------------------------
  128 LE_SHARED le_result_t ifgen_le_gpio_OpenSession
  129 (
  130     le_msg_SessionRef_t _ifgen_sessionRef,
  131     bool isBlocking
  132 );
  133 
  134 //--------------------------------------------------------------------------------------------------
  135 /**
  136  * Configure the pin as an input pin.
  137  */
  138 //--------------------------------------------------------------------------------------------------
  139 LE_SHARED le_result_t ifgen_le_gpio_SetInput
  140 (
  141     le_msg_SessionRef_t _ifgen_sessionRef,
  142         le_gpio_Polarity_t polarity
  143         ///< [IN] Active-high or active-low.
  144 );
  145 
  146 //--------------------------------------------------------------------------------------------------
  147 /**
  148  * Configure the pin as a push-pull output pin.
  149  */
  150 //--------------------------------------------------------------------------------------------------
  151 LE_SHARED le_result_t ifgen_le_gpio_SetPushPullOutput
  152 (
  153     le_msg_SessionRef_t _ifgen_sessionRef,
  154         le_gpio_Polarity_t polarity,
  155         ///< [IN] Active-high or active-low.
  156         bool value
  157         ///< [IN] Initial value to drive (true = active, false = inactive)
  158 );
  159 
  160 //--------------------------------------------------------------------------------------------------
  161 /**
  162  * Configure the pin as a tri-state output pin.
  163  *
  164  * @note The initial state will be high-impedance.
  165  */
  166 //--------------------------------------------------------------------------------------------------
  167 LE_SHARED le_result_t ifgen_le_gpio_SetTriStateOutput
  168 (
  169     le_msg_SessionRef_t _ifgen_sessionRef,
  170         le_gpio_Polarity_t polarity
  171         ///< [IN] Active-high or active-low.
  172 );
  173 
  174 //--------------------------------------------------------------------------------------------------
  175 /**
  176  * Configure the pin as an open-drain output pin.  "High" is a high-impedance state, while "Low"
  177  * pulls the pin to ground.
  178  */
  179 //--------------------------------------------------------------------------------------------------
  180 LE_SHARED le_result_t ifgen_le_gpio_SetOpenDrainOutput
  181 (
  182     le_msg_SessionRef_t _ifgen_sessionRef,
  183         le_gpio_Polarity_t polarity,
  184         ///< [IN] Active-high or active-low.
  185         bool value
  186         ///< [IN] Initial value to drive (true = active, false = inactive)
  187 );
  188 
  189 //--------------------------------------------------------------------------------------------------
  190 /**
  191  * Enable the pull-up resistor (disables pull-down if previously enabled).
  192  */
  193 //--------------------------------------------------------------------------------------------------
  194 LE_SHARED le_result_t ifgen_le_gpio_EnablePullUp
  195 (
  196     le_msg_SessionRef_t _ifgen_sessionRef
  197 );
  198 
  199 //--------------------------------------------------------------------------------------------------
  200 /**
  201  * Enable the pull-down resistor (disables pull-up if previously enabled).
  202  */
  203 //--------------------------------------------------------------------------------------------------
  204 LE_SHARED le_result_t ifgen_le_gpio_EnablePullDown
  205 (
  206     le_msg_SessionRef_t _ifgen_sessionRef
  207 );
  208 
  209 //--------------------------------------------------------------------------------------------------
  210 /**
  211  * Disable the pull-up and pull-down resistors.  Does nothing if both are already disabled.
  212  */
  213 //--------------------------------------------------------------------------------------------------
  214 LE_SHARED le_result_t ifgen_le_gpio_DisableResistors
  215 (
  216     le_msg_SessionRef_t _ifgen_sessionRef
  217 );
  218 
  219 //--------------------------------------------------------------------------------------------------
  220 /**
  221  * Set output pin to active state.
  222  *
  223  * @warning Only valid for output pins.
  224  */
  225 //--------------------------------------------------------------------------------------------------
  226 LE_SHARED le_result_t ifgen_le_gpio_Activate
  227 (
  228     le_msg_SessionRef_t _ifgen_sessionRef
  229 );
  230 
  231 //--------------------------------------------------------------------------------------------------
  232 /**
  233  * Set output pin to inactive state.
  234  *
  235  * @warning Only valid for output pins.
  236  */
  237 //--------------------------------------------------------------------------------------------------
  238 LE_SHARED le_result_t ifgen_le_gpio_Deactivate
  239 (
  240     le_msg_SessionRef_t _ifgen_sessionRef
  241 );
  242 
  243 //--------------------------------------------------------------------------------------------------
  244 /**
  245  * Set output pin to high impedance state.
  246  *
  247  * @warning Only valid for tri-state or open-drain output pins.
  248  */
  249 //--------------------------------------------------------------------------------------------------
  250 LE_SHARED le_result_t ifgen_le_gpio_SetHighZ
  251 (
  252     le_msg_SessionRef_t _ifgen_sessionRef
  253 );
  254 
  255 //--------------------------------------------------------------------------------------------------
  256 /**
  257  * Read value of GPIO input pin.
  258  *
  259  * @return true = active, false = inactive.
  260  *
  261  * @note It is invalid to read an output pin.
  262  */
  263 //--------------------------------------------------------------------------------------------------
  264 LE_SHARED bool ifgen_le_gpio_Read
  265 (
  266     le_msg_SessionRef_t _ifgen_sessionRef
  267 );
  268 
  269 //--------------------------------------------------------------------------------------------------
  270 /**
  271  * Add handler function for EVENT 'le_gpio_ChangeEvent'
  272  *
  273  * Register a callback function to be called when an input pin changes state.
  274  *
  275  * If the pin is not capable of interrupt-driven operation, then it will be sampled every
  276  * sampleMs milliseconds.  Otherwise, sampleMs will be ignored.
  277  *
  278  * If this fails, either because the handler cannot be registered, or setting the
  279  * edge detection fails, then it will return a NULL reference.
  280  */
  281 //--------------------------------------------------------------------------------------------------
  282 LE_SHARED le_gpio_ChangeEventHandlerRef_t ifgen_le_gpio_AddChangeEventHandler
  283 (
  284     le_msg_SessionRef_t _ifgen_sessionRef,
  285         le_gpio_Edge_t trigger,
  286         ///< [IN] Change(s) that should trigger the callback to be called.
  287         le_gpio_ChangeCallbackFunc_t handlerPtr,
  288         ///< [IN] The callback function.
  289         void* contextPtr,
  290         ///< [IN]
  291         int32_t sampleMs
  292         ///< [IN] If not interrupt capable, sample the input this often (ms).
  293 );
  294 
  295 //--------------------------------------------------------------------------------------------------
  296 /**
  297  * Remove handler function for EVENT 'le_gpio_ChangeEvent'
  298  */
  299 //--------------------------------------------------------------------------------------------------
  300 LE_SHARED void ifgen_le_gpio_RemoveChangeEventHandler
  301 (
  302     le_msg_SessionRef_t _ifgen_sessionRef,
  303         le_gpio_ChangeEventHandlerRef_t handlerRef
  304         ///< [IN]
  305 );
  306 
  307 //--------------------------------------------------------------------------------------------------
  308 /**
  309  * Set the edge detection mode. This function can only be used when a handler is registered
  310  * in order to prevent interrupts being generated and not handled
  311  */
  312 //--------------------------------------------------------------------------------------------------
  313 LE_SHARED le_result_t ifgen_le_gpio_SetEdgeSense
  314 (
  315     le_msg_SessionRef_t _ifgen_sessionRef,
  316         le_gpio_Edge_t trigger
  317         ///< [IN] Change(s) that should trigger the callback to be called.
  318 );
  319 
  320 //--------------------------------------------------------------------------------------------------
  321 /**
  322  * Turn off edge detection
  323  */
  324 //--------------------------------------------------------------------------------------------------
  325 LE_SHARED le_result_t ifgen_le_gpio_DisableEdgeSense
  326 (
  327     le_msg_SessionRef_t _ifgen_sessionRef
  328 );
  329 
  330 //--------------------------------------------------------------------------------------------------
  331 /**
  332  * Check if the pin is configured as an output.
  333  *
  334  * @return true = output, false = input.
  335  */
  336 //--------------------------------------------------------------------------------------------------
  337 LE_SHARED bool ifgen_le_gpio_IsOutput
  338 (
  339     le_msg_SessionRef_t _ifgen_sessionRef
  340 );
  341 
  342 //--------------------------------------------------------------------------------------------------
  343 /**
  344  * Check if the pin is configured as an input.
  345  *
  346  * @return true = input, false = output.
  347  */
  348 //--------------------------------------------------------------------------------------------------
  349 LE_SHARED bool ifgen_le_gpio_IsInput
  350 (
  351     le_msg_SessionRef_t _ifgen_sessionRef
  352 );
  353 
  354 //--------------------------------------------------------------------------------------------------
  355 /**
  356  * Get the current value of edge sensing.
  357  *
  358  * @return The current configured value
  359  *
  360  * @note it is invalid to read the edge sense of an output
  361  */
  362 //--------------------------------------------------------------------------------------------------
  363 LE_SHARED le_gpio_Edge_t ifgen_le_gpio_GetEdgeSense
  364 (
  365     le_msg_SessionRef_t _ifgen_sessionRef
  366 );
  367 
  368 //--------------------------------------------------------------------------------------------------
  369 /**
  370  * Get the current value the pin polarity.
  371  *
  372  * @return The current configured value
  373  */
  374 //--------------------------------------------------------------------------------------------------
  375 LE_SHARED le_gpio_Polarity_t ifgen_le_gpio_GetPolarity
  376 (
  377     le_msg_SessionRef_t _ifgen_sessionRef
  378 );
  379 
  380 //--------------------------------------------------------------------------------------------------
  381 /**
  382  * Check if the pin is currently active.
  383  *
  384  * @return true = active, false = inactive.
  385  *
  386  * @note this function can only be used on output pins
  387  */
  388 //--------------------------------------------------------------------------------------------------
  389 LE_SHARED bool ifgen_le_gpio_IsActive
  390 (
  391     le_msg_SessionRef_t _ifgen_sessionRef
  392 );
  393 
  394 //--------------------------------------------------------------------------------------------------
  395 /**
  396  * Get the current value of pull up and down resistors.
  397  *
  398  * @return The current configured value
  399  */
  400 //--------------------------------------------------------------------------------------------------
  401 LE_SHARED le_gpio_PullUpDown_t ifgen_le_gpio_GetPullUpDown
  402 (
  403     le_msg_SessionRef_t _ifgen_sessionRef
  404 );
  405 /** @} **/
  406 #endif // LE_GPIO_COMMON_H_INCLUDE_GUARD
LE_GPIO_EDGE_NONE
No edge detection. 
Definition: le_gpio_common.h:50
LE_GPIO_ACTIVE_HIGH
GPIO active-high, output is 1. 
Definition: le_gpio_common.h:35
le_gpio_ChangeCallbackFunc_t
void(* le_gpio_ChangeCallbackFunc_t)(bool state, void *contextPtr)
Definition: le_gpio_common.h:93
LE_SHARED
#define LE_SHARED
Definition: le_basics.h:287
le_result_t
le_result_t
Definition: le_basics.h:46
LE_GPIO_EDGE_RISING
Notify when voltage goes from low to high. 
Definition: le_gpio_common.h:52
le_gpio_ChangeEventHandlerRef_t
struct le_gpio_ChangeEventHandler * le_gpio_ChangeEventHandlerRef_t
Definition: le_gpio_common.h:67
le_gpio_Edge_t
le_gpio_Edge_t
Definition: le_gpio_common.h:48
LE_GPIO_EDGE_FALLING
Notify when voltage goes from high to low. 
Definition: le_gpio_common.h:54
LE_GPIO_EDGE_BOTH
Notify when pin voltage changes state in either direction. 
Definition: le_gpio_common.h:56
LE_GPIO_ACTIVE_LOW
GPIO active-low, output is 0. 
Definition: le_gpio_common.h:37
LE_GPIO_PULL_DOWN
Pulldown resistor is enabled. 
Definition: le_gpio_common.h:79
LE_GPIO_PULL_OFF
Neither resistor is enabled. 
Definition: le_gpio_common.h:77
le_msg_SessionRef_t
struct le_msg_Session * le_msg_SessionRef_t
Definition: le_messaging.h:860
legato.h
le_gpio_Polarity_t
le_gpio_Polarity_t
Definition: le_gpio_common.h:33
le_gpio_PullUpDown_t
le_gpio_PullUpDown_t
Definition: le_gpio_common.h:75
LE_GPIO_PULL_UP
Pullup resistor is enabled. 
Definition: le_gpio_common.h:81