mirror of https://github.com/ArduPilot/ardupilot
190 lines
6.7 KiB
C++
190 lines
6.7 KiB
C++
/*
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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Send and receive JSON backend data to alow a second AP instance to ride along
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*/
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#include "SIM_JSON_Master.h"
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#if HAL_SIM_JSON_MASTER_ENABLED
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#include <AP_Logger/AP_Logger.h>
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#include <errno.h>
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using namespace SITL;
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void JSON_Master::init(const int32_t num_slaves)
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{
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socket_list *list = &_list;
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uint8_t i = 1;
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for (i = 1 ; i <= num_slaves; i++) {
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// init each socket and instance
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list->instance = i;
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uint16_t port = 9002 + 10 * i;
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if (!list->sock_in.reuseaddress()) {
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AP_HAL::panic("JSON master: socket reuseaddress failed on port: %d - %s\n", port, strerror(errno));
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}
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if (!list->sock_in.bind("127.0.0.1", port)) {
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AP_HAL::panic("JSON master: socket reuseaddress failed on port: %d - %s\n", port, strerror(errno));
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}
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if (!list->sock_in.set_blocking(false)) {
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AP_HAL::panic( "JSON master: socket set_blocking(false) failed on port: %d - %s\n", port, strerror(errno));
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}
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printf("Slave %u: listening on %u\n", list->instance, port);
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list->next = new socket_list;
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list = list->next;
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initialized = true;
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}
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}
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// Receive PWM outs from ride along controlers
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void JSON_Master::receive(struct sitl_input &input)
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{
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if (!initialized) {
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return;
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}
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uint8_t master_instance = AP::sitl()->ride_along_master.get();
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for (socket_list *list = &_list; list->next; list=list->next) {
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// cycle through all ride along instances
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struct servo_packet {
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uint16_t magic;
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uint16_t frame_rate;
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uint32_t frame_count;
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uint16_t pwm[16];
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} buffer;
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while (true) {
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ssize_t ret = list->sock_in.recv(&buffer, sizeof(buffer), 100);
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if (ret == 0) {
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// wait some more
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continue;
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}
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if (buffer.magic != 18458) {
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// magic value does not match
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continue;
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}
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if (!list->connected) {
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// connect back to the last address for send
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uint16_t port;
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const char *_ip = nullptr;
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list->sock_in.last_recv_address(_ip, port);
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list->connected = list->sock_out.connect(_ip, port) && (port != 0);
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if (list->connected) {
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printf("Slave %u connected to %s:%u\n", list->instance, _ip, port);
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}
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}
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if (list->connected) {
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break;
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}
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}
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const bool use_servos = list->instance == master_instance;
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// @LoggerMessage: SLV1
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// @Description: Log data received from JSON simulator 1
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// @Field: TimeUS: Time since system startup (us)
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// @Field: Instance: Slave instance
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// @Field: magic: magic JSON protocol key
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// @Field: frame_rate: Slave instance's desired frame rate
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// @Field: frame_count: Slave instance's current frame count
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// @Field: active: 1 if the servo outputs are being used from this instance
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AP::logger().WriteStreaming("SLV1", "TimeUS,Instance,magic,frame_rate,frame_count,active",
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"s#----",
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"F?????",
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"QBHHIB",
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AP_HAL::micros64(),
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list->instance,
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buffer.magic,
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buffer.frame_rate,
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buffer.frame_count,
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use_servos);
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// @LoggerMessage: SLV2
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// @Description: Log data received from JSON simulator 2
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// @Field: TimeUS: Time since system startup
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// @Field: Instance: Slave instance
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// @Field: C1: channel 1 output
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// @Field: C2: channel 2 output
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// @Field: C3: channel 3 output
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// @Field: C4: channel 4 output
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// @Field: C5: channel 5 output
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// @Field: C6: channel 6 output
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// @Field: C7: channel 7 output
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// @Field: C8: channel 8 output
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// @Field: C9: channel 9 output
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// @Field: C10: channel 10 output
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// @Field: C11: channel 11 output
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// @Field: C12: channel 12 output
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// @Field: C13: channel 13 output
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// @Field: C14: channel 14 output
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AP::logger().WriteStreaming("SLV2", "TimeUS,Instance,C1,C2,C3,C4,C5,C6,C7,C8,C9,C10,C11,C12,C13,C14",
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"s#YYYYYYYYYYYYYY",
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"F?--------------",
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"QBHHHHHHHHHHHHHH",
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AP_HAL::micros64(),
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list->instance,
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buffer.pwm[0],
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buffer.pwm[1],
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buffer.pwm[2],
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buffer.pwm[3],
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buffer.pwm[4],
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buffer.pwm[5],
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buffer.pwm[6],
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buffer.pwm[7],
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buffer.pwm[8],
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buffer.pwm[9],
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buffer.pwm[10],
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buffer.pwm[11],
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buffer.pwm[12],
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buffer.pwm[13]);
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if (list->instance == master_instance) {
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// Use the servo outs from this instance
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memcpy(input.servos,buffer.pwm,sizeof(buffer.pwm));
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}
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}
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}
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// send vehicle state to ride along controlers
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void JSON_Master::send(const struct sitl_fdm &output, const Vector3d &position)
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{
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if (!initialized) {
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return;
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}
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// message is the same to all slaves
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int length = asprintf(&json_out,"\n{\"timestamp\":%f,\"imu\":{\"gyro\":[%f,%f,%f],\"accel_body\":[%f,%f,%f]},\"position\":[%f,%f,%f],\"quaternion\":[%f,%f,%f,%f],\"velocity\":[%f,%f,%f],\"no_time_sync\":1}\n",
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output.timestamp_us * 1e-6,
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radians(output.rollRate), radians(output.pitchRate), radians(output.yawRate),
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output.xAccel, output.yAccel, output.zAccel,
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position.x, position.y, position.z,
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output.quaternion.q1, output.quaternion.q2, output.quaternion.q3, output.quaternion.q4,
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output.speedN, output.speedE, output.speedD);
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for (socket_list *list = &_list; list->next; list=list->next) {
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list->sock_out.send(json_out,length);
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}
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}
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#endif // HAL_SIM_JSON_MASTER_ENABLED
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