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35d1f2ef34
Most tools used for compliance and SBOM generation use SPDX identifiers This change brings us a step closer to an easy SBOM generation. Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
104 lines
3.1 KiB
C
104 lines
3.1 KiB
C
/****************************************************************************
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* apps/examples/spislv_test/spislv_test.c
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*
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* SPDX-License-Identifier: Apache-2.0
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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 <stdio.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <errno.h>
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#include <string.h>
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#include <stdlib.h>
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#define SOURCE_FILE "/dev/spislv2"
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#define BUFFER_SIZE 256
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* spislv_test
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****************************************************************************/
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int main(int argc, FAR char *argv[])
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{
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int fd;
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char buffer[BUFFER_SIZE];
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ssize_t bytes_read;
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ssize_t i;
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printf("Slave started!!\n");
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fd = open(SOURCE_FILE, O_RDWR);
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if (fd < 0)
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{
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printf("Failed to open %s: %s\n", SOURCE_FILE, strerror(errno));
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return 0;
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}
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while (1)
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{
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/* Read the number from the source file */
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printf("Slave: Reading from %s\n", SOURCE_FILE);
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bytes_read = read(fd, buffer, BUFFER_SIZE - 1);
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if (bytes_read < 0)
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{
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printf("Failed to read from %s: %s\n",
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SOURCE_FILE, strerror(errno));
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close(fd);
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return 0;
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}
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else if (bytes_read > 0)
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{
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buffer[bytes_read] = '\0';
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/* Print buffer in hexadecimal format */
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printf("Slave: Read value in hex: ");
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for (i = 0; i < bytes_read; ++i)
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{
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printf("%02x ", (unsigned char)buffer[i]);
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}
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printf("\n");
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/* Write the same value back */
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printf("Slave: Writing %d bytes back to %s\n",
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bytes_read, SOURCE_FILE);
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ssize_t bytes_written = write(fd, buffer, bytes_read);
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if (bytes_written < 0)
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{
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printf("Failed to write to %s: %s\n",
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SOURCE_FILE, strerror(errno));
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close(fd);
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return 0;
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}
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}
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}
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}
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