forked from Archive/PX4-Autopilot
123 lines
4.3 KiB
C
123 lines
4.3 KiB
C
/****************************************************************************
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* graphics/nxmu/nx_kbdin.c
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*
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* Copyright (C) 2008-2009, 2011-2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/nx/nx.h>
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#include "nxfe.h"
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#ifdef CONFIG_NX_KBD
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/****************************************************************************
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* Pre-Processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Types
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nx_kbdin
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*
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* Description:
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* Used by a thread or interrupt handler that manages some kind of keypad
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* hardware to report text information to the NX server. That text
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* data will be routed by the NX server to the appropriate window client.
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*
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****************************************************************************/
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int nx_kbdin(NXHANDLE handle, uint8_t nch, FAR const uint8_t *ch)
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{
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FAR struct nxfe_conn_s *conn = (FAR struct nxfe_conn_s *)handle;
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FAR struct nxsvrmsg_kbdin_s *outmsg;
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int size;
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int ret;
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int i;
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/* Allocate a bigger message to account for the variable amount of character
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* data.
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*/
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size = sizeof(struct nxsvrmsg_kbdin_s) + nch - 1;
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outmsg = (FAR struct nxsvrmsg_kbdin_s *)malloc(size);
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if (!outmsg)
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{
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errno = ENOMEM;
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return ERROR;
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}
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/* Inform the server of the new keypad data */
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outmsg->msgid = NX_SVRMSG_KBDIN;
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outmsg->nch = nch;
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for (i = 0; i < nch; i++)
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{
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outmsg->ch[i] = ch[i];
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}
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ret = nxmu_sendserver(conn, &outmsg, size);
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free(outmsg);
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return ret;
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}
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#endif /* CONFIG_NX_KBD */
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