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view src/cs/drivers/drv_app/kpd/kpd_power_api.c @ 268:f2e52cab0a73

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abb_inth.c: check all interrupt causes, not just one The original code used if - else if - else if etc constructs, thus the first detected interrupt was the only one handled. However, Iota ITSTATREG is a clear-on-read register, thus if we only handle the first detected interrupt and skip checking the others, then the other interrupts will be lost, if more than one interrupt happened to occur in one ABB interrupt handling cycle - a form of rare race condition. Change the code to check all interrupts that were read in this cycle.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 13 Jun 2021 18:17:53 +0000
parents 4e78acac3d88
children
line wrap: on
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/**
 * @file   kpd_power_api.c
 *
 * Implementation of bridge function for PWR SWE interface.
 *
 * @author   Laurent Sollier (l-sollier@ti.com)
 * @version 0.1
 */

/*
 * History:
 *
 *   Date          Author       Modification
 *  ----------------------------------------
 *  11/02/2001     L Sollier    Create
 *
 *
 * (C) Copyright 2001 by Texas Instruments Incorporated, All Rights Reserved
 */

#include "kpd/kpd_power_api.h"
#include "kpd/kpd_messages_i.h"
#include "kpd/kpd_physical_key_def.h"
#include "kpd/kpd_env.h"

#include "rvm/rvm_use_id_list.h"

/* External declaration */
extern T_KPD_ENV_CTRL_BLK* kpd_env_ctrl_blk;

/* This variable ius defined here but is used by the PWR SWE */
T_KPD_KEYPAD Kp = {0};


/**
 * @name Functions implementation
 *
 */
/*@{*/


/**
 * function: kpd_power_key_pressed
 */
T_RV_RET kpd_power_key_pressed(void)
{
   T_RV_RET ret = RV_OK;

   T_RVF_MB_STATUS mb_status;
   T_KPD_KEY_PRESSED_MSG* msg_key_pressed;

   /* Check if initialization has been correctly done */
   if ( (kpd_env_ctrl_blk == 0) || (kpd_env_ctrl_blk->swe_is_initialized == FALSE) )
   {
      KPD_SEND_TRACE("KPD: Initialization is not yet done or failed", RV_TRACE_LEVEL_ERROR);
      return RV_INTERNAL_ERR;
   }

   /* Reserve memory for message */
   mb_status = rvf_get_buf (kpd_env_ctrl_blk->prim_id, sizeof(T_KPD_KEY_PRESSED_MSG), (void **) &msg_key_pressed);

   if (mb_status == RVF_GREEN) /* Memory allocation success */
   {
      /* Fill the message */
      msg_key_pressed->hdr.msg_id = KPD_KEY_PRESSED_MSG;
      msg_key_pressed->value = KPD_SHORT_PRESS_PWR_KEY;
      msg_key_pressed->key_to_process = TRUE;

      /* Send message to the keypad task */
      rvf_send_msg(kpd_env_ctrl_blk->addr_id, msg_key_pressed);
   }
   else
   {
      KPD_SEND_TRACE("KPD: Memory allocation error", RV_TRACE_LEVEL_ERROR);
      if (mb_status == RVF_YELLOW)
         rvf_free_buf(msg_key_pressed);
      ret = RV_MEMORY_ERR;
   }


   return ret;
}


/*@}*/