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author | Thomas Gubler <thomasgubler@gmail.com> | 2014-08-11 10:33:11 +0200 |
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committer | Thomas Gubler <thomasgubler@gmail.com> | 2014-08-11 10:33:11 +0200 |
commit | 8bbaacb1e9381c29a83e0ecf37de6df3018bd38d (patch) | |
tree | 712af7080cdb82c244018419c2af692b0a73bf04 /src/modules/mavlink/mavlink_parameters.cpp | |
parent | 7bc0e26734a0319295e488e413db8f618b9b621c (diff) | |
parent | 5abdacc9079e4ebe5f2e3d855f3c5241adecef37 (diff) | |
download | px4-firmware-8bbaacb1e9381c29a83e0ecf37de6df3018bd38d.tar.gz px4-firmware-8bbaacb1e9381c29a83e0ecf37de6df3018bd38d.tar.bz2 px4-firmware-8bbaacb1e9381c29a83e0ecf37de6df3018bd38d.zip |
Merge remote-tracking branch 'upstream/master' into offboard2_externalsetpointmessages
Conflicts:
src/modules/mavlink/mavlink_main.cpp
src/modules/mavlink/mavlink_main.h
src/modules/mavlink/mavlink_receiver.cpp
Diffstat (limited to 'src/modules/mavlink/mavlink_parameters.cpp')
-rw-r--r-- | src/modules/mavlink/mavlink_parameters.cpp | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/src/modules/mavlink/mavlink_parameters.cpp b/src/modules/mavlink/mavlink_parameters.cpp new file mode 100644 index 000000000..cd5f53d88 --- /dev/null +++ b/src/modules/mavlink/mavlink_parameters.cpp @@ -0,0 +1,197 @@ +/**************************************************************************** + * + * Copyright (c) 2014 PX4 Development Team. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name PX4 nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/** + * @file mavlink_parameters.cpp + * Mavlink parameters manager implementation. + * + * @author Anton Babushkin <anton.babushkin@me.com> + */ + +#include <stdio.h> + +#include "mavlink_parameters.h" +#include "mavlink_main.h" + +MavlinkParametersManager::MavlinkParametersManager(Mavlink *mavlink) : MavlinkStream(mavlink), + _send_all_index(-1) +{ +} + +unsigned +MavlinkParametersManager::get_size() +{ + if (_send_all_index >= 0) { + return MAVLINK_MSG_ID_PARAM_VALUE_LEN + MAVLINK_NUM_NON_PAYLOAD_BYTES; + + } else { + return 0; + } +} + +void +MavlinkParametersManager::handle_message(const mavlink_message_t *msg) +{ + switch (msg->msgid) { + case MAVLINK_MSG_ID_PARAM_REQUEST_LIST: { + /* request all parameters */ + mavlink_param_request_list_t req_list; + mavlink_msg_param_request_list_decode(msg, &req_list); + + if (req_list.target_system == mavlink_system.sysid && + (req_list.target_component == mavlink_system.compid || req_list.target_component == MAV_COMP_ID_ALL)) { + + _send_all_index = 0; + _mavlink->send_statustext_info("[pm] sending list"); + } + break; + } + + case MAVLINK_MSG_ID_PARAM_SET: { + /* set parameter */ + if (msg->msgid == MAVLINK_MSG_ID_PARAM_SET) { + mavlink_param_set_t set; + mavlink_msg_param_set_decode(msg, &set); + + if (set.target_system == mavlink_system.sysid && + (set.target_component == mavlink_system.compid || set.target_component == MAV_COMP_ID_ALL)) { + + /* local name buffer to enforce null-terminated string */ + char name[MAVLINK_MSG_PARAM_VALUE_FIELD_PARAM_ID_LEN + 1]; + strncpy(name, set.param_id, MAVLINK_MSG_PARAM_VALUE_FIELD_PARAM_ID_LEN); + /* enforce null termination */ + name[MAVLINK_MSG_PARAM_VALUE_FIELD_PARAM_ID_LEN] = '\0'; + /* attempt to find parameter, set and send it */ + param_t param = param_find(name); + + if (param == PARAM_INVALID) { + char buf[MAVLINK_MSG_STATUSTEXT_FIELD_TEXT_LEN]; + sprintf(buf, "[pm] unknown param: %s", name); + _mavlink->send_statustext_info(buf); + + } else { + /* set and send parameter */ + param_set(param, &(set.param_value)); + send_param(param); + } + } + } + break; + } + + case MAVLINK_MSG_ID_PARAM_REQUEST_READ: { + /* request one parameter */ + mavlink_param_request_read_t req_read; + mavlink_msg_param_request_read_decode(msg, &req_read); + + if (req_read.target_system == mavlink_system.sysid && + (req_read.target_component == mavlink_system.compid || req_read.target_component == MAV_COMP_ID_ALL)) { + + /* when no index is given, loop through string ids and compare them */ + if (req_read.param_index < 0) { + /* local name buffer to enforce null-terminated string */ + char name[MAVLINK_MSG_PARAM_VALUE_FIELD_PARAM_ID_LEN + 1]; + strncpy(name, req_read.param_id, MAVLINK_MSG_PARAM_VALUE_FIELD_PARAM_ID_LEN); + /* enforce null termination */ + name[MAVLINK_MSG_PARAM_VALUE_FIELD_PARAM_ID_LEN] = '\0'; + /* attempt to find parameter and send it */ + send_param(param_find(name)); + + } else { + /* when index is >= 0, send this parameter again */ + send_param(param_for_index(req_read.param_index)); + } + } + break; + } + + default: + break; + } +} + +void +MavlinkParametersManager::send(const hrt_abstime t) +{ + /* send all parameters if requested */ + if (_send_all_index >= 0) { + send_param(param_for_index(_send_all_index)); + _send_all_index++; + if (_send_all_index >= (int) param_count()) { + _send_all_index = -1; + } + } +} + +void +MavlinkParametersManager::send_param(param_t param) +{ + if (param == PARAM_INVALID) { + return; + } + + mavlink_param_value_t msg; + + /* + * get param value, since MAVLink encodes float and int params in the same + * space during transmission, copy param onto float val_buf + */ + if (param_get(param, &msg.param_value) != OK) { + return; + } + + msg.param_count = param_count(); + msg.param_index = param_get_index(param); + + /* copy parameter name */ + strncpy(msg.param_id, param_name(param), MAVLINK_MSG_PARAM_VALUE_FIELD_PARAM_ID_LEN); + + /* query parameter type */ + param_type_t type = param_type(param); + + /* + * Map onboard parameter type to MAVLink type, + * endianess matches (both little endian) + */ + if (type == PARAM_TYPE_INT32) { + msg.param_type = MAVLINK_TYPE_INT32_T; + + } else if (type == PARAM_TYPE_FLOAT) { + msg.param_type = MAVLINK_TYPE_FLOAT; + + } else { + msg.param_type = MAVLINK_TYPE_FLOAT; + } + + _mavlink->send_message(MAVLINK_MSG_ID_PARAM_VALUE, &msg); +} |