88 lines
2.6 KiB
C
88 lines
2.6 KiB
C
/****************************************************************************
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* libs/libnx/nxmu/nx_kbdin.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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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 <errno.h>
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#include <nuttx/nx/nx.h>
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#include <nuttx/nx/nxmu.h>
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#include "nxcontext.h"
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#ifdef CONFIG_NX_KBD
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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 nxmu_conn_s *conn = (FAR struct nxmu_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
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* character 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 *)lib_malloc(size);
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if (!outmsg)
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{
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set_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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lib_free(outmsg);
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return ret;
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}
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#endif /* CONFIG_NX_KBD */
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