ardupilot/libraries/SITL/SIM_RF_Wasp.cpp

118 lines
4.5 KiB
C++

/*
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
Simulator for the Wasp Serial rangefinder
*/
#include "SIM_RF_Wasp.h"
#include <GCS_MAVLink/GCS.h>
#include <stdio.h>
#include <string.h>
using namespace SITL;
void RF_Wasp::check_configuration()
{
const ssize_t n = read_from_autopilot(&_buffer[_buflen], ARRAY_SIZE(_buffer) - _buflen - 1);
if (n <= 0) {
return;
}
_buflen += n;
// ensure we have an entire line:
const char *cr = strchr(_buffer, '\n');
if (cr == nullptr) {
if (_buflen == ARRAY_SIZE(_buffer) - 1) {
// nuke it all
memset(_buffer, '\0', ARRAY_SIZE(_buffer));
_buflen = 0;
}
return;
}
if (!strncmp(_buffer, ">GO\n", _buflen)) {
config.go = true;
const char *response = "GO\n";
write_to_autopilot(response, strlen(response));
} else if (_buffer[0] == '>') {
bool set = false;
if (!set) {
// check for string settings
for (uint8_t i=0; i<ARRAY_SIZE(string_configs); i++) {
if (!strncmp(&_buffer[1], string_configs[i].name, strlen(string_configs[i].name))) {
uint8_t offs = strlen(string_configs[i].name);
offs += 1; // for '>'
offs += 1; // for space
strncpy(string_configs[i].value, &_buffer[offs], MIN(ARRAY_SIZE(config.format), unsigned(cr - _buffer - offs - 1))); // -1 for the lf, -1 for the cr
// gcs().send_text(MAV_SEVERITY_INFO, "Wasp: config (%s) (%s)", string_configs[i].name, string_configs[i].value);
char response[128];
const size_t x = snprintf(response,
ARRAY_SIZE(response),
"%s %s\n",
string_configs[i].name,
string_configs[i].value);
write_to_autopilot(response, x);
set = true;
break;
}
}
}
if (!set) {
// check for integer settings
for (uint8_t i=0; i<ARRAY_SIZE(integer_configs); i++) {
if (!strncmp(&_buffer[1], integer_configs[i].name, strlen(integer_configs[i].name))) {
uint8_t offs = strlen(integer_configs[i].name);
offs += 1; // for '>'
offs += 1; // for space
char tmp[32]{};
strncpy(tmp, &_buffer[offs], MIN(ARRAY_SIZE(config.format), unsigned(cr - _buffer - offs - 1))); // -1 for the lf, -1 for the cr
*(integer_configs[i].value) = atoi(tmp);
// gcs().send_text(MAV_SEVERITY_INFO, "Wasp: config (%s) (%d)", integer_configs[i].name, *(integer_configs[i].value));
char response[128];
const size_t x = snprintf(response,
ARRAY_SIZE(response),
"%s %d\n",
integer_configs[i].name,
*(integer_configs[i].value));
write_to_autopilot(response, x);
set = true;
break;
}
}
}
if (!set) {
GCS_SEND_TEXT(MAV_SEVERITY_INFO, "Wasp: unknown setting (%s)", &_buffer[0]);
}
}
// just nuke everything in the buffer, not just what we just
// processed. This is until we sort out the extra-cr thing
memset(_buffer, '\0', ARRAY_SIZE(_buffer));
_buflen = 0;
}
void RF_Wasp::update(float range)
{
check_configuration();
return SerialRangeFinder::update(range);
}
uint32_t RF_Wasp::packet_for_alt(uint16_t alt_cm, uint8_t *buffer, uint8_t buflen)
{
return snprintf((char*)buffer, buflen, "%f\n", alt_cm/100.0f);
}