int UavcanNode::save_params(int remote_node_id)
{
uavcan::protocol::param::ExecuteOpcode::Request opcode_req;
opcode_req.opcode = opcode_req.OPCODE_SAVE;
uavcan::ServiceClient<uavcan::protocol::param::ExecuteOpcode, ExecuteOpcodeCallback> client(_node);
client.setCallback(ExecuteOpcodeCallback(this, &UavcanNode::cb_opcode));
_callback_success = false;
int call_res = client.call(remote_node_id, opcode_req);
if (call_res >= 0) {
while (client.hasPendingCalls()) {
usleep(10000);
}
}
if (!_callback_success) {
std::printf("Failed to save parameters: %d\n", call_res);
return -1;
}
return 0;
}
pthread_addr_t UavcanServers::run(pthread_addr_t)
{
prctl(PR_SET_NAME, "uavcan fw srv", 0);
Lock lock(_subnode_mutex);
/*
Copy any firmware bundled in the ROMFS to the appropriate location on the
SD card, unless the user has copied other firmware for that device.
*/
unpackFwFromROMFS(UAVCAN_FIRMWARE_PATH, UAVCAN_ROMFS_FW_PATH);
/* the subscribe call needs to happen in the same thread,
* so not in the constructor */
int cmd_sub = orb_subscribe(ORB_ID(vehicle_command));
int param_request_sub = orb_subscribe(ORB_ID(uavcan_parameter_request));
int armed_sub = orb_subscribe(ORB_ID(actuator_armed));
/* Set up shared service clients */
_param_getset_client.setCallback(GetSetCallback(this, &UavcanServers::cb_getset));
_param_opcode_client.setCallback(ExecuteOpcodeCallback(this, &UavcanServers::cb_opcode));
_param_restartnode_client.setCallback(RestartNodeCallback(this, &UavcanServers::cb_restart));
_enumeration_client.setCallback(EnumerationBeginCallback(this, &UavcanServers::cb_enumeration_begin));
_enumeration_indication_sub.start(EnumerationIndicationCallback(this, &UavcanServers::cb_enumeration_indication));
_enumeration_getset_client.setCallback(GetSetCallback(this, &UavcanServers::cb_enumeration_getset));
_enumeration_save_client.setCallback(ExecuteOpcodeCallback(this, &UavcanServers::cb_enumeration_save));
_count_in_progress = _param_in_progress = _param_list_in_progress = _cmd_in_progress = _param_list_all_nodes = false;
memset(_param_counts, 0, sizeof(_param_counts));
_esc_enumeration_active = false;
memset(_esc_enumeration_ids, 0, sizeof(_esc_enumeration_ids));
_esc_enumeration_index = 0;
while (!_subnode_thread_should_exit) {
if (_check_fw == true) {
_check_fw = false;
_node_info_retriever.invalidateAll();
}
const int spin_res = _subnode.spin(uavcan::MonotonicDuration::fromMSec(10));
if (spin_res < 0) {
warnx("node spin error %i", spin_res);
}
// Check for parameter requests (get/set/list)
bool param_request_ready;
orb_check(param_request_sub, ¶m_request_ready);
if (param_request_ready && !_param_list_in_progress && !_param_in_progress && !_count_in_progress) {
struct uavcan_parameter_request_s request;
orb_copy(ORB_ID(uavcan_parameter_request), param_request_sub, &request);
if (_param_counts[request.node_id]) {
/*
* We know how many parameters are exposed by this node, so
* process the request.
*/
if (request.message_type == MAVLINK_MSG_ID_PARAM_REQUEST_READ) {
uavcan::protocol::param::GetSet::Request req;
if (request.param_index >= 0) {
req.index = request.param_index;
} else {
req.name = (char*)request.param_id;
}
int call_res = _param_getset_client.call(request.node_id, req);
if (call_res < 0) {
warnx("UAVCAN command bridge: couldn't send GetSet: %d", call_res);
} else {
_param_in_progress = true;
_param_index = request.param_index;
}
} else if (request.message_type == MAVLINK_MSG_ID_PARAM_SET) {
uavcan::protocol::param::GetSet::Request req;
if (request.param_index >= 0) {
req.index = request.param_index;
} else {
req.name = (char*)request.param_id;
}
if (request.param_type == MAV_PARAM_TYPE_REAL32) {
req.value.to<uavcan::protocol::param::Value::Tag::real_value>() = request.real_value;
} else if (request.param_type == MAV_PARAM_TYPE_UINT8) {
req.value.to<uavcan::protocol::param::Value::Tag::boolean_value>() = request.int_value;
} else {
req.value.to<uavcan::protocol::param::Value::Tag::integer_value>() = request.int_value;
}
// Set the dirty bit for this node
set_node_params_dirty(request.node_id);
int call_res = _param_getset_client.call(request.node_id, req);
if (call_res < 0) {
warnx("UAVCAN command bridge: couldn't send GetSet: %d", call_res);
} else {
_param_in_progress = true;
_param_index = request.param_index;
}
} else if (request.message_type == MAVLINK_MSG_ID_PARAM_REQUEST_LIST) {
// This triggers the _param_list_in_progress case below.
_param_index = 0;
_param_list_in_progress = true;
_param_list_node_id = request.node_id;
_param_list_all_nodes = false;
warnx("UAVCAN command bridge: starting component-specific param list");
}
} else if (request.node_id == MAV_COMP_ID_ALL) {
if (request.message_type == MAVLINK_MSG_ID_PARAM_REQUEST_LIST) {
/*
* This triggers the _param_list_in_progress case below,
* but additionally iterates over all active nodes.
*/
_param_index = 0;
_param_list_in_progress = true;
_param_list_node_id = get_next_active_node_id(1);
_param_list_all_nodes = true;
warnx("UAVCAN command bridge: starting global param list with node %hhu", _param_list_node_id);
if (_param_counts[_param_list_node_id] == 0) {
param_count(_param_list_node_id);
}
}
} else {
/*
* Need to know how many parameters this node has before we can
* continue; count them now and then process the request.
*/
param_count(request.node_id);
}
}
// Handle parameter listing index/node ID advancement
if (_param_list_in_progress && !_param_in_progress && !_count_in_progress) {
if (_param_index >= _param_counts[_param_list_node_id]) {
warnx("UAVCAN command bridge: completed param list for node %hhu", _param_list_node_id);
// Reached the end of the current node's parameter set.
_param_list_in_progress = false;
if (_param_list_all_nodes) {
// We're listing all parameters for all nodes -- get the next node ID
uint8_t next_id = get_next_active_node_id(_param_list_node_id);
if (next_id < 128) {
_param_list_node_id = next_id;
/*
* If there is a next node ID, check if that node's parameters
* have been counted before. If not, do it now.
*/
if (_param_counts[_param_list_node_id] == 0) {
param_count(_param_list_node_id);
}
// Keep on listing.
_param_index = 0;
_param_list_in_progress = true;
warnx("UAVCAN command bridge: started param list for node %hhu", _param_list_node_id);
}
}
}
}
// Check if we're still listing, and need to get the next parameter
if (_param_list_in_progress && !_param_in_progress && !_count_in_progress) {
// Ready to request the next value -- _param_index is incremented
// after each successful fetch by cb_getset
uavcan::protocol::param::GetSet::Request req;
req.index = _param_index;
int call_res = _param_getset_client.call(_param_list_node_id, req);
if (call_res < 0) {
_param_list_in_progress = false;
warnx("UAVCAN command bridge: couldn't send param list GetSet: %d", call_res);
} else {
_param_in_progress = true;
}
}
// Check for ESC enumeration commands
bool cmd_ready;
orb_check(cmd_sub, &cmd_ready);
if (cmd_ready && !_cmd_in_progress) {
struct vehicle_command_s cmd;
orb_copy(ORB_ID(vehicle_command), cmd_sub, &cmd);
if (cmd.command == vehicle_command_s::VEHICLE_CMD_PREFLIGHT_UAVCAN) {
int command_id = static_cast<int>(cmd.param1 + 0.5f);
int node_id = static_cast<int>(cmd.param2 + 0.5f);
int call_res;
warnx("UAVCAN command bridge: received UAVCAN command ID %d, node ID %d", command_id, node_id);
switch (command_id) {
case 0:
case 1: {
_esc_enumeration_active = command_id;
_esc_enumeration_index = 0;
_esc_count = 0;
uavcan::protocol::enumeration::Begin::Request req;
// TODO: Incorrect implementation; the parameter name field should be left empty.
// Leaving it as-is to avoid breaking compatibility with non-compliant nodes.
req.parameter_name = "esc_index";
req.timeout_sec = _esc_enumeration_active ? 65535 : 0;
call_res = _enumeration_client.call(get_next_active_node_id(1), req);
if (call_res < 0) {
warnx("UAVCAN ESC enumeration: couldn't send initial Begin request: %d", call_res);
beep(BeepFrequencyError);
} else {
beep(BeepFrequencyGenericIndication);
}
break;
}
default: {
warnx("UAVCAN command bridge: unknown command ID %d", command_id);
break;
}
}
} else if (cmd.command == vehicle_command_s::VEHICLE_CMD_PREFLIGHT_STORAGE) {
int command_id = static_cast<int>(cmd.param1 + 0.5f);
warnx("UAVCAN command bridge: received storage command ID %d", command_id);
switch (command_id) {
case 1: {
// Param save request
int node_id;
node_id = get_next_dirty_node_id(1);
if (node_id < 128) {
_param_save_opcode = uavcan::protocol::param::ExecuteOpcode::Request::OPCODE_SAVE;
param_opcode(node_id);
}
break;
}
case 2: {
// Command is a param erase request -- apply it to all active nodes by setting the dirty bit
_param_save_opcode = uavcan::protocol::param::ExecuteOpcode::Request::OPCODE_ERASE;
for (int i = 1; i < 128; i = get_next_active_node_id(i)) {
set_node_params_dirty(i);
}
param_opcode(get_next_dirty_node_id(1));
break;
}
}
}
}
// Shut down once armed
// TODO (elsewhere): start up again once disarmed?
bool updated;
orb_check(armed_sub, &updated);
if (updated) {
struct actuator_armed_s armed;
orb_copy(ORB_ID(actuator_armed), armed_sub, &armed);
if (armed.armed && !armed.lockdown) {
warnx("UAVCAN command bridge: system armed, exiting now.");
break;
}
}
}
_subnode_thread_should_exit = false;
warnx("exiting");
return (pthread_addr_t) 0;
}
