2011-08-29 22:12:03 +02:00
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/****************************************************************************
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2011-08-30 01:06:54 +02:00
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* apps/system/i2c/i2c_dev.c
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2011-08-29 22:12:03 +02:00
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*
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2021-06-10 13:17:16 +02:00
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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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2011-08-29 22:12:03 +02:00
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*
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2021-06-10 13:17:16 +02:00
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* http://www.apache.org/licenses/LICENSE-2.0
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2011-08-29 22:12:03 +02:00
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*
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2021-06-10 13:17:16 +02:00
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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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2011-08-29 22:12:03 +02:00
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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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2011-08-30 17:07:21 +02:00
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#include <stdlib.h>
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2016-01-30 15:00:59 +01:00
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#include <nuttx/i2c/i2c_master.h>
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2011-08-30 17:07:21 +02:00
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2011-08-29 22:12:03 +02:00
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#include "i2ctool.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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2011-09-18 19:52:00 +02:00
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* Name: i2ccmd_dev
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2011-08-29 22:12:03 +02:00
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****************************************************************************/
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2011-09-18 19:52:00 +02:00
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int i2ccmd_dev(FAR struct i2ctool_s *i2ctool, int argc, char **argv)
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2011-08-29 22:12:03 +02:00
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{
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2019-08-20 22:29:21 +02:00
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struct i2c_msg_s msg;
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2011-08-30 17:07:21 +02:00
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FAR char *ptr;
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uint8_t regaddr;
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2018-08-30 14:35:12 +02:00
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uint8_t saveaddr;
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2011-08-30 17:07:21 +02:00
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long first;
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long last;
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int addr;
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int nargs;
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int argndx;
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int ret;
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2016-02-02 17:27:50 +01:00
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int fd;
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2011-08-30 17:07:21 +02:00
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int i;
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int j;
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2018-08-30 14:35:12 +02:00
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/* A register address other than zero may be provided on the command line.
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* However, for backward compatibility, the address zero will be used
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* unless the address is specifically included on the command line for
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* this command.
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*/
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saveaddr = i2ctool->regaddr;
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i2ctool->regaddr = 0;
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2011-08-30 17:07:21 +02:00
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/* Parse any command line arguments */
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for (argndx = 1; argndx < argc; )
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{
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2018-08-30 14:35:12 +02:00
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/* Break out of the loop when the last option has been parsed */
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2011-08-30 17:07:21 +02:00
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ptr = argv[argndx];
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if (*ptr != '-')
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{
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break;
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}
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/* Otherwise, check for common options */
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2017-05-19 15:13:12 +02:00
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nargs = i2ctool_common_args(i2ctool, &argv[argndx]);
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2011-08-30 17:07:21 +02:00
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if (nargs < 0)
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{
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2018-08-30 14:35:12 +02:00
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goto errout;
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2011-08-30 17:07:21 +02:00
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}
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2018-08-30 14:35:12 +02:00
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2011-08-30 17:07:21 +02:00
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argndx += nargs;
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}
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2021-06-10 18:40:35 +02:00
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/* There should be exactly two more things on the command line:
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* The first and last addresses to be probed.
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2011-08-30 17:07:21 +02:00
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*/
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2018-08-30 14:35:12 +02:00
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if (argndx + 1 < argc)
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2011-08-30 17:07:21 +02:00
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{
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first = strtol(argv[argndx], NULL, 16);
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2018-08-30 14:35:12 +02:00
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last = strtol(argv[argndx + 1], NULL, 16);
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2021-06-10 18:40:35 +02:00
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if (first < 0 || first > 0x7f || last < 0 ||
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last > 0x7f || first > last)
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2011-08-30 17:07:21 +02:00
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{
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i2ctool_printf(i2ctool, g_i2cargrange, argv[0]);
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2018-08-30 14:35:12 +02:00
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goto errout;
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2011-08-30 17:07:21 +02:00
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}
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argndx += 2;
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}
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else
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{
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i2ctool_printf(i2ctool, g_i2cargrequired, argv[0]);
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2018-08-30 14:35:12 +02:00
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goto errout;
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2011-08-30 17:07:21 +02:00
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}
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if (argndx != argc)
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{
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i2ctool_printf(i2ctool, g_i2ctoomanyargs, argv[0]);
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2018-08-30 14:35:12 +02:00
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goto errout;
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2011-08-30 17:07:21 +02:00
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}
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/* Get a handle to the I2C bus */
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2016-02-02 21:42:16 +01:00
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fd = i2cdev_open(i2ctool->bus);
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2016-02-02 17:27:50 +01:00
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if (fd < 0)
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2011-08-30 17:07:21 +02:00
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{
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2021-06-10 18:40:35 +02:00
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i2ctool_printf(i2ctool, "Failed to get bus %d\n",
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i2ctool->bus);
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goto errout;
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2011-08-30 17:07:21 +02:00
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}
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/* Probe each address */
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2021-06-10 18:40:35 +02:00
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i2ctool_printf(i2ctool,
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" 0 1 2 3 4 5 6 7 8 9 a b c d e f\n");
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2011-08-30 17:07:21 +02:00
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for (i = 0; i < 128; i += 16)
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{
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i2ctool_printf(i2ctool, "%02x: ", i);
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for (j = 0; j < 16; j++)
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{
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/* Skip addresses that are out of the selected range */
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2018-08-30 14:35:12 +02:00
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addr = i + j;
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2011-08-30 17:07:21 +02:00
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if (addr < first || addr > last)
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{
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i2ctool_printf(i2ctool, " ");
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continue;
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}
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2014-04-14 00:24:28 +02:00
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2011-08-30 17:07:21 +02:00
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/* Set up data structures */
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2019-08-20 22:29:21 +02:00
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regaddr = i2ctool->regaddr;
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2011-08-30 17:07:21 +02:00
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2019-08-20 22:29:21 +02:00
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msg.frequency = i2ctool->freq;
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msg.addr = addr;
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msg.flags = I2C_M_READ;
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msg.buffer = ®addr;
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msg.length = 1;
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2018-08-30 14:35:12 +02:00
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2019-08-20 22:29:21 +02:00
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ret = i2cdev_transfer(fd, &msg, 1);
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2011-08-30 17:07:21 +02:00
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if (ret == OK)
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{
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i2ctool_printf(i2ctool, "%02x ", addr);
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}
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else
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{
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i2ctool_printf(i2ctool, "-- ");
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}
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2021-06-10 18:40:35 +02:00
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2019-08-20 22:29:21 +02:00
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i2ctool_flush(i2ctool);
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2011-08-30 17:07:21 +02:00
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}
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2016-02-02 17:27:50 +01:00
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2011-08-30 17:07:21 +02:00
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i2ctool_printf(i2ctool, "\n");
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2011-08-30 21:48:47 +02:00
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i2ctool_flush(i2ctool);
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2011-08-30 17:07:21 +02:00
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}
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2020-01-02 13:09:50 +01:00
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close(fd);
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2018-08-30 14:35:12 +02:00
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errout:
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/* Restore the previous "sticky" register address unless a new register
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* address was provided on the command line. In that case the new
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* register address is retained.
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*/
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if (i2ctool->regaddr == 0)
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{
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i2ctool->regaddr = saveaddr;
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}
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2011-08-29 22:12:03 +02:00
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return OK;
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}
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