ardupilot/ArduPlane/commands_process.pde

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/// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
// For changing active command mid-mission
//----------------------------------------
static void change_command(uint8_t cmd_index)
{
struct Location temp = get_cmd_with_index(cmd_index);
if (temp.id > MAV_CMD_NAV_LAST ){
gcs_send_text_P(SEVERITY_LOW,PSTR("Bad Request - cannot change to non-Nav cmd"));
} else {
nav_command_ID = NO_COMMAND;
next_nav_command.id = NO_COMMAND;
g.command_index.set_and_save(cmd_index - 1);
process_next_command();
}
}
// called by 10 Hz loop
// --------------------
static void update_commands(void)
{
if(home_is_set == false){
return; // don't do commands
}
if(control_mode == AUTO){
process_next_command();
} // Other (eg GCS_Auto) modes may be implemented here
}
static void verify_commands(void)
{
if(verify_nav_command()){
nav_command_ID = NO_COMMAND;
}
if(verify_condition_command()){
non_nav_command_ID = NO_COMMAND;
}
}
static void process_next_command()
{
// This function makes sure that we always have a current navigation command
// and loads conditional or immediate commands if applicable
struct Location temp;
// these are Navigation/Must commands
// ---------------------------------
if (nav_command_ID == NO_COMMAND){ // no current navigation command loaded
temp.id = MAV_CMD_NAV_LAST;
while(temp.id >= MAV_CMD_NAV_LAST && nav_command_index <= g.command_total) {
nav_command_index++;
temp = get_cmd_with_index(nav_command_index);
}
if(nav_command_index > g.command_total){
// we are out of commands!
gcs_send_text_P(SEVERITY_LOW,PSTR("out of commands!"));
handle_no_commands();
} else {
next_nav_command = temp;
nav_command_ID = next_nav_command.id;
non_nav_command_index = NO_COMMAND; // This will cause the next intervening non-nav command (if any) to be loaded
non_nav_command_ID = NO_COMMAND;
if (g.log_bitmask & MASK_LOG_CMD) {
Log_Write_Cmd(g.command_index, &next_nav_command);
}
process_nav_cmd();
}
}
// these are Condition/May and Do/Now commands
// -------------------------------------------
if (non_nav_command_index == NO_COMMAND) { // If the index is NO_COMMAND then we have just loaded a nav command
non_nav_command_index = nav_command_index + 1;
} else if (non_nav_command_ID == NO_COMMAND) { // If the ID is NO_COMMAND then we have just completed a non-nav command
non_nav_command_index++;
}
if(nav_command_index < g.command_total && non_nav_command_ID == NO_COMMAND) {
temp = get_cmd_with_index(non_nav_command_index);
if(temp.id <= MAV_CMD_NAV_LAST) { // The next command is a nav command. No non-nav commands to do
g.command_index.set_and_save(nav_command_index);
non_nav_command_index = nav_command_index;
non_nav_command_ID = WAIT_COMMAND;
} else { // The next command is a non-nav command. Prepare to execute it.
g.command_index.set_and_save(non_nav_command_index);
next_nonnav_command = temp;
non_nav_command_ID = next_nonnav_command.id;
if (g.log_bitmask & MASK_LOG_CMD) {
Log_Write_Cmd(g.command_index, &next_nonnav_command);
}
process_non_nav_command();
}
}
}
/**************************************************/
// These functions implement the commands.
/**************************************************/
static void process_nav_cmd()
{
gcs_send_text_P(SEVERITY_LOW,PSTR("New nav command loaded"));
// clear non-nav command ID and index
non_nav_command_index = NO_COMMAND; // Redundant - remove?
non_nav_command_ID = NO_COMMAND; // Redundant - remove?
handle_process_nav_cmd();
}
static void process_non_nav_command()
{
gcs_send_text_P(SEVERITY_LOW,PSTR("new non-nav command loaded"));
if(non_nav_command_ID < MAV_CMD_CONDITION_LAST) {
handle_process_condition_command();
} else {
handle_process_do_command();
// flag command ID so a new one is loaded
// -----------------------------------------
non_nav_command_ID = NO_COMMAND;
}
}